DVD Mini Hi-Fi System
SERVICE MANUAL
MODEL: MDD65 (MDS65V)
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS"
IN THIS MANUAL.
MODEL: MDD65 (MDS65V)
SERVICE MANUAL
P/NO : AFN74972286
MARCH, 2011
Website http://biz.lgservice.com
Internal Use Only

CONTENTS
SECTION 1 ........ SUMMARY
SECTION 2 ........ CABINET & MAIN CHASSIS
SECTION 3 ........ ELECTRICAL
SECTION 4 ........ REPLACEMENT PARTS LIST
1-1

SECTION 1
SUMMARY
CONTENTS
SERVICING PRECAUTIONS ................................................................................................................... 1-3
ESD PRECAUTIONS .................................................................................................................................. 1-5
SERVICE INFORMATION FOR EEPROM .......................................................................................... 1-6
SOFTWARE UPGRADE PROCESS ..................................................................................................... 1-7
SPECIFICATIONS ....................................................................................................................................... 1-8
1-2

NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction and/or
damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cotton
swab should be used, taking care not to distort lens.
6) Never attempt to disassemble the pick-up.
Spring has excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab.
(Do not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much
of this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag
Drop impact
NEVER look directly at the laser beam, and don't allow
contact with fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
1-3
SERVICING PRECAUTIONS

NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These components
are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage, components
can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must be
taken, therefore, to avoid repair or storage where the temperature or humidity is high, where strong magnet-
ism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1 MΩ)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent stat-
ic electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor
(1 MΩ)
Conductive
Sheet
Resistor
(1 MΩ)
Armband
1-4

Electrostatically Sensitive Devices (ESD)
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components
commonly are called Electrostatically Sensitive Devices (ESD). Examples of typical ESD devices are integrated
circuits and some field-effect transistors and semiconductor chip components. The following techniques should
be used to help reduce the incidence of component damage caused by static electricity.
1. Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off
any electrostatic charge on your body by touching a known earth ground. Alternatively, obtain and wear a
commercially available discharging wrist strap device, which should be removed for potential shock reasons
prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ESD devices, place the assembly on a conductive surface
such as aluminum foil, to prevent electrostatic charge buildup or exposure of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ESD devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static" can
generate electrical charges sufficient to damage ESD devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ESD
devices.
6. Do not remove a replacement ESD device from its protective package until immediately before you are
ready to install it. (Most replacement ESD devices are packaged with leads electrically shorted together by
conductive foam, aluminum foil or comparable conductive materials).
7. Immediately before removing the protective material from the leads of a replacement ESD device, touch the
protective material to the chassis or circuit assembly into which the device will by installed.
CAUTION : BE SURE NO POWER IS APPLIED TO THE CHASSIS OR CIRCUIT, AND OBSERVE ALL OTHER
SAFETY PRECAUTIONS.
8. Minimize bodily motions when handing unpackaged replacement ESD devices. (Otherwise harmless motion
such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate
static electricity sufficient to damage an ESD device).
CAUTION. GRAPHIC SYMBOLS
THE LIGHTNING FLASH WITH APROWHEAD SYMBOL. WITHIN AN EQUILATERAL TRIANGLE, IS
INTENDED TO ALERT THE SERVICE PERSONNEL TO THE PRESENCE OF UNINSULATED
"DANGEROUS VOLTAGE" THAT MAY BE OF SUFFICIENT MAGNITUDE TO CONSTITUTE A RISK OF
ELECTRIC SHOCK.
THE EXCLAMATION POINT WITHIN AN EQUILATERAL TRIANGLE IS INTENDED TO ALERT THE
SERVICE PERSONNEL TO THE PRESENCE OF IMPORTANT SAFETY INFORMATION IN SERVICE
LITERATURE.
1-5
ESD PRECAUTIONS

POWER ON
FLD no disc status
Remote control '2' + Front 'STOP'
push same timing during 5s
FLD 'OP-0....
Move to appropriate position
and make changes
with Rmc 'skip, mode, play' key.
Press STOP key
FLD 'write ok'
Remote control 'Fwd skip' +
Front 'STOP' push same timing
FLD 'E2P CLR'
Completed
NAME
OPT 0
OPT 1
OPT 2
OPT 3
OPT 4
OPT 5
OPT 6
OPT 7
OPT 8
OPT 9
DETECT NEW EEPROM
(OPTION EDIT SCREEN)
HEX
F9
00
A4
DD
00
09
81
20
10
00
1-6
SERVICE INFORMATION FOR EEPROM

Important Notice :
When ugrade the software running. Do not shunt down the power, it tmay damage the unit.
1. MICOM UPGRADE
1) Copy the software file into USB flash, as the file name is LG_MDD65_XXXXXXX.HE
2) Insert the USB flash into USB host.
3) Set Function to USB position.
Appear onto VFD
UPGRADE
4) After finish, Set will automatically power off.
2. FLASH MEMORY UPGRADE
1) Copy the software file into USB flash, As the file name is LG_MDD65_XXXXXXX.RO
2) Insert the USB flash into USB host.
3) Set Function to USB position.
Appear onto VFD
CODE 00
NO USB
4) Manual Power off and Power on is finish.
1-7
SOFTWARE UPGRADE PROCESS

SPECIFICATIONS
GENERAL
Power supply
Refer to main label.
Power consumption
Refer to main label.
Net Weight
5.2 kg
External dimensions (W x H x D)
(272x336x352)mm
Operating conditions Temperature
5 °C to 35 °C, Operation status: Horizontal
Operating humidity
5%to85%
Laser
Semiconductor laser, wavelength, 760 to 800 nm
TUNER FM/AM [MW]
FM Tuning Range
87.5 to 108.0 MHz or 87.50 to 108.00 MHz
FM Intermediate Frequency
128 kHz
AM Tuning Range
522to1620kHz,520to1710kHzor522to1710kHz
AM Intermediate Frequency
45 kHz
AMPLIFIER
Output Power
Front:30Wx2
USB
Bus Power Supply (USB)
DC5V 500mA
USB Version
USB 2.0 or USB 1.1
 CD
Frequency Response
40to20000Hz
Signal-to-noise ratio
More than 60 dB
Dynamic range
More than 50 dB
TAPE
F.F/REW Time
120 sec (C-60)
Frequency Response
250to8000Hz
Signal to Noise Ratio
40 dB
Channel Separation
45 dB (P/B) / 40 dB (R/P)
Erase Ratio
50 dB (MTT-5511)
SPEAKERS
Speaker name
MDS65V
Type
2 Way 2 Speaker
Impedance
4Ω
Rated Input Power
30W
Max. Input Power
60W
Net Dimensions (W x H x D)
(202x337x237)mm
Net Weight
2.47 kg
1-8

SECTION 2
CABINET & MAIN CHASSIS
CONTENTS
EXPLODED VIEWS..................................................................................................................................... 2-3
1. CABINET AND MAIN FRAME SECTION (MDD65) ................................................................................. 2-3
2. TAPE DECK MECHANISM SECTION...................................................................................................... 2-5
3. SPEAKER SECTION ................................................................................................................................ 2-7
4. PACKING ACCESSORY SECTION ......................................................................................................... 2-8
2-1

2-2
MEMO

2-3
2-4
EXPLODED VIEWS
1. CABINET AND MAIN FRAME SECTION (MDD65)
O
MAIN
J
B
C
K
J
D
H
B
A
C
D
I
G
E
F
H
F
M
L
L
M
282
460
283
E
A
K
I
SMPS
O
G
N
N
Q
252
A00
269
270
268
A46
271
A47
300
273
272
A43
A49
459
256
255
251
258
257
254
253
261
265
262
259
A45
263L
264L
264R
266L
266R
267L
267R
A41L
A41A
A41R
263R
CABLE1
CABLE2
250
KEY2
MIC
KEY3
KEY1
VFD
LED
USB
A48
CABLE3
A01
A26
281
452
452
453
453
454
453
456
456
454
454
452
451
451
456
458
457
455
455
455
455
Q

2-5
2-6
2. TAPE DECK MECHANISM SECTION
A00
003
009
011
009
A02
015
007
001
037
A01
018
017
006
020
019
022
023
025

2-7
LEFT / RIGHT SPEAKER (MDS65V)
3. SPEAKER SECTION
A60

2-8
Battery
808
Remote controller
900
Instruction Ass'y
801
Packing
803T
Packing
803B
Box
802
Bag
804
825 FM antenna
824 AM antenna
4. PACKING ACCESSORY SECTION

SECTION 3
ELECTRICAL
CONTENTS
ONE POINT REPAIR INSTRUCTION................................................................................................... 3-2
1. NO POWER PROBLEM ......................................................................................................................... 3-2
2. VFD DOESN'T DISPLAY........................................................................................................................ 3-4
3. THE DISC TRAY DOESN'T WORK ....................................................................................................... 3-5
4. NO BOOTING WHEN YOU TURN THE UNIT ON ................................................................................ 3-9
5. SPEAKER NO OUTPUT WHEN YOU TURN THE UNIT ON .............................................................. 3-13
6. VFD HAVEN'T SHOW WHEN YOU TURN THE UNIT ON.................................................................. 3-15
MAJOR WAVEFORMS............................................................................................................................ 3-16
1. IC1 MICOM INTERFACE WAVEFORM ............................................................................................... 3-16
2. IC100 MICOM INTERFACE WAVEFORM ........................................................................................... 3-17
3. SLED DRIVE AND MOTOR WAVEFORM ........................................................................................... 3-18
4. SPINDLE DRIVE AND MOTOR WAVEFORM ..................................................................................... 3-19
5. RF, FOCUS AND TRACKING ERROR WAVEFORM.......................................................................... 3-20
WIRING DIAGRAM ................................................................................................................................... 3-21
BLOCK DIAGRAM.................................................................................................................................... 3-23
CIRCUIT DIAGRAMS............................................................................................................................... 3-25
1. SMPS - POWER CIRCUIT DIAGRAM ................................................................................................. 3-25
2. MAIN - DVD MPEG CIRCUIT DIAGRAM............................................................................................. 3-27
3. MAIN - MCU CIRCUIT DIAGRAM........................................................................................................ 3-29
4. MAIN - SERVO CIRCUIT DIAGRAM ................................................................................................... 3-31
5. MAIN - D/AC CIRCUIT DIAGRAM ....................................................................................................... 3-33
6. MAIN - AMP CIRCUIT DIAGRAM ........................................................................................................ 3-35
7. AUDIO DECK SYSTEM CIRCUIT DIAGRAM ...................................................................................... 3-37
8. MIC / USB / KEY / VFD CIRCUIT DIAGRAM ...................................................................................... 3-39
CIRCUIT VOLTAGE CHART ................................................................................................................. 3-41
PRINTED CIRCUIT BOARD DIAGRAMS ......................................................................................... 3-45
1. MAIN P.C.BOARD ................................................................................................................................ 3-45
2. SMPS P.C.BOARD ............................................................................................................................... 3-49
3. FRONT P.C.BOARD............................................................................................................................. 3-51
3-1

1. NO POWER PROBLEM
No power problem occurs when you power on the unit.
1-1. F1, D3 and D6
1-1-1. Solution
Replace F1, D3, D6 on SMPS board.
1-1-2. How to troubleshoot (Countermeasure)
1) Look at the physical of fuse F1.
2) Check the bridge diode of D3, D6.
1-1-3. Service hint (Any picture / Remark)
Check with ohm meter is short!
Check with ohm meter is open!
-
+
D6
DB105G
1
1
2
2
3
3
4
4
3
D16 FR104
D5
UF
56k/
C23 104/275V
C24
472
C18
472
W16
Jumper
1
2
C21
471/400V
R16 1.5M/0.5W
LT
U3
FSFM260N
GND
1
Vcc
2
Vfb
3
Ipk
4
Vstr
5
DRAIN
6
DRAIN
7
DRAIN
8
D11
FR104
R17
47k
C22
471/400V
RV1 471
C19
22uF/50V
C14
47uF/50V
t
RT1
2.7ohm/5W
W6 Jumper
12
C9
68uF/450V
C3
103/630V
C17 104/275V
C1
68uF/450V
R25
10
W7 Jumper
12
R13
47k
W17
Jumper
1
2
LF1
SQE2424
1
2
34
5
6
78
F1
T3.15AL250V
HS1
15*10
1
Q5
KTA1268
-
+
D3
DB105G
1
1
2
2
3
3
4
4
LF2
SQE2424
1
2
34
5
6
78
3-2
ONE POINT REPAIR INSTRUCTION

No power problem occurs when you power on the unit.
1-2. C29 and C30
1-2-1. Solution
Replace C29, C30 on SMPS board.
1-2-2. How to troubleshoot (Countermeasure)
1) Check all of voltage.
Warn
Parts
respe
CAUTION:
Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating
and(or) model name described in main label.
C27 2.2uF/50V
PC3
LTV-817
1
1
2
2
3
3
4
4
C28
103/630V
R10
560
W15 Jumper
1
2
R14 18k
R19
2.2k
U5
KA431/TO
C32
224
R23
33k
W18 Jumper
1
2
D18 UG4D
T2
EER2828(AMP)
1
2
3
4
5
6
7
8
R18
56k/2W
U6
KA431/TO
R28 470
R26
220
R27
150
R11 56
W13 Jumper
1
2
C29
1000uF/25V
W19 Jumper
12
R21
33k
R24
33k
R20
2k
R29
4.7k
R12
2.7k
W9
Jumper
12
R15
2.7k
PC1
LTV-817
C26 2.2uF/50V
C30
1000uF/25V
D19
UF4007
R22
33k
C35 222/400V
C25 470pF/1kV
W4 Jumper
12
W5 Jumper
1
2
1-2-3. Service hint (Any picture / Remark)
3-3
ONE POINT REPAIR INSTRUCTION

2. VFD DOESN'T DISPLAY
Timer doesn't work(abnormal display).
2-1. D13
2-1-1. Solution
Replace D13 on SMPS board.
2-1-2. How to troubleshoot (Countermeasure)
1) Check J1 pin3 ö -26 V at power.
2-1-3. Service hint (Any picture / Remark)
1.GND
2.GND
3.GND
4.-12V
5.+12V
6.+12V
7.5V
8.5.9V
9.3.5V
10.3.5V
11.GND
12.GND
13.36V
14.36V
15.36V
8.GND
7.CD_CTRL
6.PWR_CTRL
5.PWR_SENS
4.5.6V
3.VKK
2.FL-
1.FL+
Q3
KTA1268
W3 Jumper
12
Q2
KTA1273
C20
330uF/16V
R10
560
Q1
KTC3205
R8 1k
C15
47uF/50V
C11
100uF/6.3V
R2 10k
C8
100uF/16V
R6
10k
W2
Jumper
12
R5
18k
W10 Jumper
1
2
C7
1000uF/25V
C13
100uF/25V
U4 278R33
IN
1
OUT
2
GND
3
CON
4
U1 78R05
IN
1
OUT
2
GND
3
CON
4
W11 Jumper
12
C5
1000uF/16V
D9
1N4148
W14
Jumper
12
R4 1k
C6
100uF/6.3V
D10
1N4148
C16
47uF/50V
W12 Jumper
12
J2
15P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
W1 Jumper
12
Q4
KTC3205
C2
uF/50V
W8
Jumper
12
W9
Jumper
12
D13
3V
J1
8P
1
2
3
4
5
6
7
8
U2 78R12
IN
1
OUT
2
GND
3
CON
4
W4 Jumper
12
L1 22uH
R7
1k
3-4
ONE POINT REPAIR INSTRUCTION

3. THE DISC TRAY DOESN'T WORK
When you turn on the set, the disc tray won't work.
3-1. U1
3-1-1. Solution
Replace U1_KA78R05 on SMPS board.
3-1-2. How to troubleshoot (Countermeasure)
1) Check all of voltage.
2) 5 V unnormal.
3-1-3. Service hint (Any picture / Remark)
1.GND
2.GND
3.GND
4.-12V
5.+12V
6.+12V
7.5V
8.5.9V
9.3.5V
10.3.5V
11.GND
12.GND
13.36V
14.36V
15.36V
8.GND
7.CD_CTRL
6.PWR_CTRL
5.PWR_SENS
4.5.6V
3.VKK
2.FL-
1.FL+
Q3
KTA1268
W3 Jumper
12
Q2
KTA1273
C20
330uF/16V
R10
560
Q1
KTC3205
R8 1k
C15
47uF/50V
C11
100uF/6.3V
R2 10k
C8
100uF/16V
R6
10k
W2
Jumper
12
R5
18k
W10 Jumper
1
2
25V
C13
100uF/25V
U4 278R33
IN
1
OUT
2
GND
3
CON
4
U1 78R05
IN
1
OUT
2
GND
3
CON
4
W11 Jumper
12
C5
1000uF/16V
D9
1N4148
W14
Jumper
12
R4 1k
C6
100uF/6.3V
D10
1N4148
C16
47uF/50V
W12 Jumper
12
J2
15P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
W1 Jumper
12
Q4
KTC3205
W8
Jumper
12
D13
3V
J1
8P
1
2
3
4
5
6
7
8
U2 78R12
IN
1
OUT
2
GND
3
CON
4
W4 Jumper
12
L1 22uH
R7
1k
3-5
ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.
3-2. U4 and D8
3-2-1. Solution
Replace U4_278R33 and D8 on SMPS board.
3-2-2. How to troubleshoot (Countermeasure)
1) Check all of voltage.
2) 3.3 V abnormal.
3-2-3. Service hint (Any picture / Remark)
D4 SR306
C4
1000uF/16V
W3 Jumper
12
C12
100uF/50V
Q2
KTA1273
D16 FR104
D5
UF4007
R1
56k/2W
R8 1k
C11
100uF/6.3V
D15 FR104
R2 10k
C8
100uF/16V
D7 SHG2D
R5
18k
C7
1000uF/25V
C13
100uF/25V
R3
10
U4 278R33
IN
1
OUT
2
GND
3
CON
4
IN
1
OUT
2
GND
3
CON
4
C5
1000uF/16V
U3
FSFM260N
GND
1
Vcc
2
Vfb
3
Ipk
4
Vstr
5
DRAIN
6
DRAIN
7
DRAIN
8
R4 1k
D11
FR104
C14
47uF/50V
D8 SR306
W
Q4
KTC3205
C10
1000uF/16V
R9
1
C3
103/630V
W7 Jumper
12
W17
umper
1
2
1
1
2
2
3
3
4
4
5
5
15
15
11
11
13
13
12
12
7
7
8
8
9
9
10
10
U2 78R12
IN
1
OUT
2
GND
3
CON
4
D12 FR104
3-6
ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.
3-3. IC401
3-3-1. Solution
Replace IC401_IP9011 on main board.
3-3-2. How to troubleshoot (Countermeasure)
1) Check 5 VM voltage.
2) Check IC401 pin15,16,17,18 1.5 V?
3) All of normal, please check R404,R444,R424,R410, also replace IC401.
3-3-3. Service hint (Any picture / Remark)
V
2
.
3
V
4
5
.
3
1D
O
1
-
2D
O
1
+
3D
O
2
-
4D
O
2
+
5V
C
C
1
6I
N
2
7I
N
1
8M
U
T
E
9C
T
L
3
10 REV3
11 FWD3
12 SVCC
13 DO3+
5
1
-
3
O
D
4
1D
O
4
-
16
DO4+
17
DO5-
18
DO5+
19
VCC2
20
IN5
21
IN4
22
GND
23
BIAS
24
CTL5
25
REV5
26
FWD5
27
DO6+
28
DO6-
0
3
D
N
G
P
9
2P
G
N
D
IC401
IP9011
C419
473P
R444
9K1
R404
20K
R447
1K
R422
1K
C421
103P
C425
103P
R452
100R
R408
3K3
C414
104P
C409
220uF
10V
R432
56K
R4A2
9K1
R4A1
27K
C413
104P
L408
FB2500
C428
104P
C408
220uF
10V
C439
100P
C438
100P
C402
XX
R4A0
9K1
R4A3
33K
R417
33R
C435
104P
C440
104P
R402
1K2
R448
1K2
R424
8K2
R410
5K1
C404
100uF
10V
C451
104P
C423
474P
C420
474P
R409
1K8
R499
1K8
R445
10K
SPNN
C188
NC
5VM
D
D
N
G
D
N
G
V_MUTE
GND
OSE
EN
AD+
AD-
GND
TURD_
TURD
TUR
TU
GND
GND
SV
SPIND
SLE
SL
S
SP
S
GND
IC401(IP9011)
R404, R444
R424, R410
3-7
ONE POINT REPAIR INSTRUCTION

When you turn on the set, the disc tray won't work.
3-4. IC1
3-4-1. Solution
Replace IC1 ESS8390 on main board.
3-4-2. How to troubleshoot (Countermeasure)
1) Check 5 V CD voltage.
2) Check 3.3 V.
3) Check X501, X100.
4) Check IC100 to IC1 communication resistor R84, R109, R110, R581.
5) Check IC1 to IC502 communication resistor R83, R541, R542.
6) Check ESS8390 SERVO voltage 1.5 V up to snuff instead IC501.
3-4-3. Service hint (Any picture / Remark)
3-8
ONE POINT REPAIR INSTRUCTION

4. NO BOOTING WHEN YOU TURN THE UNIT ON
When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.
4-1. IC503(W25Q16A), IC3(SN74LV00A)
4-1-1. Solution
Replace IC503,IC3 on main board.
4-1-2. How to troubleshoot (Countermeasure)
1) If 3.3 V haven't on main board of P1, please check P-SENS 5V come out or not?
Please check D1 or replace D1 on SMPS.
2) Check or replace L509.
4-1-3. Service hint (Any picture / Remark)
3-9
ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.
4-2. IC100 (LC87F5NC8A)
4-2-1. Solution
Replace IC100 on main board.
4-2-2. How to troubleshoot (Countermeasure)
1) If 3.3 V haven't on main board of P1, please check P-SENS 5V come out or not?
Please check D1 or replace D1 on SMPS.
2) If 5V normal, first check R100, R101, R102; OK!
Check the IC101 out and check the zener diode ZD101 voltage if between 4.18 ~ 4.3 V(main pcb).
3) After changging it, the SET is still not booting, please check 5.6 VA at P7904 come out?
Please check or replace diode D3 or L1 on the SMPS board;
Other check the main MCU reset IC U101_KIA7027 of replace it, check or replace D101,D102(main PCB bottom )
4) All of changed the SET still boot-up, please check or replace IC100_LC87F5NC8A(main pcb).
4-2-3. Service hint (Any picture / Remark)
3-10
ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.
4-3. X100
4-3-1. Solution
Replace X100_9.8304 MHz on main board.
4-3-2. How to troubleshoot (Countermeasure)
1) If 5.6 V normal? Please check D101, D102.
2) Check X100 pin1, 2 voltage is 2.46 V or not replace it.
4-3-3. Service hint (Any picture / Remark)
3-11
ONE POINT REPAIR INSTRUCTION

When you turn on the set, it will show 'welcome' message continuously on the front
panel. And it will not boot-up normally.
4-4. X101
4-4-1. Solution
Replace X101_32.768 kHz on main board.
4-4-2. How to troubleshoot (Countermeasure)
1) If 5.6 V normal? Please check D102, D102.
2) Check X101 pin1, 2 voltage is 2.26 V or not then replace it.
4-4-3. Service hint (Any picture / Remark)
3-12
ONE POINT REPAIR INSTRUCTION

5. SPEAKER NO OUTPUT WHEN YOU TURN THE UNIT ON
When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.
5-1. IC604
5-1-1. Solution
Replace IC604_PS9831 on main board.
5-1-2. How to troubleshoot (Countermeasure)
1) Check 3.3 V.
2) Check X601 crytal operation.
3) Check IC604 to IC700 communication resistor R798, R703, R704, R709, R719, R708.
4) Check PWM waveform at R799, R731, R732, R736, R737, R746.
5) If check all of OK, please replace IC604.
5-1-3. Service hint (Any picture / Remark)
3-13
ONE POINT REPAIR INSTRUCTION

When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.
5-2. IC700, IC701
5-2-1. Solution
Replace IC700, IC701 on main board.
5-2-2. How to troubleshoot (Countermeasure)
1) Check +12 V, +36 V.
2) Check IC700 / IC701 +12 V power supply resistor R701, R702, R724, R727, R726, R729, R730, R787, R753.
3) Check signal out at L709, L708, L710, L716, L715, L711, L707, L712.
4) Check all of OK, please replace IC700, IC701.
5-2-3. Service hint (Any picture / Remark)
3-14
ONE POINT REPAIR INSTRUCTION

6. VFD HAVEN'T SHOW WHEN YOU TURN THE UNIT ON
When you turn on the SET, it will show 'welcome' message continuously on the
front panel. And speaker have noise output.
6-1. U901 (PT6324)
6-1-1. Solution
Replace PT6324 on VFD display board.
6-1-2. How to troubleshoot (Countermeasure)
1) Check F+_-22V, F-_-25V, VKK_-26V, VDD_+5.6V.
2) Check IC100 to U901 communication resistor R912, R913, R914.
3) Check FB914, FB907, FB906, FB918, FB908, FB910, FB911.
4) If check all of OK, please replace U901.
6-1-3. Service hint (Any picture / Remark)
3-15
ONE POINT REPAIR INSTRUCTION

3-16
MAJOR WAVEFORMS
1. IC1 MICOM INTERFACE WAVEFORM
FIG. 1-1
FIG. 1-2
2
1
3
4
1
2
3
4
1) During power on
2) During normal play
Intel Flash Option
8
DWE/SEL_PLL1
9
DSCK
10
DQM
11
DB7
12
DB6
13
DB5
14
VD33
15
VS33
16
VDD
17
DB4
18
DB3
19
DB2
20
DB1
21
DB0
22
DB8
23
DB9
24
DB10
25
DB11
26
DB12
27 DB13
28
DB14
29
VS33
30
VD33
31
DB15
32
AUX7
33
AUX6
34 AUX5
35
AUX4
36
VD33
37
VS33
38
VDD
39
AUX3
40
AUX2
41
AUX1
42
AUX0
43
SPI_CS2
44
SPI_CS3
45
SPI_CLK
46
SPI_DI
47
SPI_DO
48
SPDIF_IN
49
SPDIF_OUT
50
AUX8/VSYNC/RXD2
51
VS33
52
VD33
53
AUX9/HSYNC/TXD2
54
AUX10/TSD[3]
55
AUX11/RSD/TDMDR
56
AUX12/RBCK/TDMCLK
57
AUX13/RWS/TDMFS
58
AUX14/TBCK/TXD1
59
AUX15/656CLK
60
AUX3[7]/CAMIN7
61
AUX3[6]/CAMIN6
62
AUX3[5]/CAMIN5
63
AUX3[4]/CAMIN4
64
AUX3[3]/CAMIN3
65
AUX3[2]/CAMIN2
66
VD33
67
VS33
68
VDD
69
AUX3[1]/CAMIN1
70
AUX3[0]/CAMIN0
71
MCLK
72
RESET
73
CLK/TDMCLK/RBCK
74
VS33
75
VD33
76
VREF
77
COMP/YUV3
78
RESET/YUV4
79
FDAC/YUV7
80
VDAC/YUV6
IC1
ESS8390/8391SCC
1
2
3
5
7
4
6
8
R5A1
10R
1
2
3
5
7
4
6
8
R5A4
10R
R541
33R
R83
33R
R542
33R
C539
104
C542
104
1
2
3
5
7
4
6
8
R5A5 10R
1
2
3
5
7
4
6
8
R5A7
10R
C535
104
R581
33R
R109
100R
R110
33R
R84
33R
R543
33R
R566
33R
C79
104
C541
104
R-X
NC
R5B6
NC
R5B9
0R
C549
104
C78
220uF
16V
R5B7 FB600
C550
104
R5B8 10R
R5A8 FB272
R554 FB272
R558 FB272
C551
104
C540
104
R5B2
FB600
C81
104
R5A0
390 1%
C89
104
C90
104
L21
FB600
C129
10P
C198 10P
C127 10P
C128 10P
R43
33R
TP1
L24
FB272
R5B4
FB600
R5A9
750R
C195
103
C196
103
C186
100P
C182
330P
R551
750R
SPI_CS3
I2C_DATA
I2C_CLK
V_MUTE
DVD_DI
DVD_DO
DVD_CB
DVD_CLK
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB1
DB0
DB2
DB3
DB4
DB5
DB6
DB7
DQM
DSCLK
WE
CVBS
MRST
MCLK
UP_SW
DALRCK
ADC_BCK
ADC_DATA
IN_SW
SPI_DO
SPI_DI
SPI_CLK
SPI_CLK_4MB
OPT_OUT
COREVCC
DADATA_0
DADATA_1
DADATA_2
DADATA_3
PWM_MUTE
PWMMUTE
ADC_BCK
DALRCK
MCLK
ADC_DATA
OUT_SW
TURO+
TURO-
SENSOR
DOWN_SW
GND
GND
XOUT
3
1
4
2
IC1 Pin33 DVD_CE
IC1 Pin33 DVD_CE
IC1 Pin72 RESET
IC1 Pin72 RESET
IC1 Pin34 DVD_DO
IC1 Pin34 DVD_DO
IC1 Pin35 DVD_DI
IC1 Pin35 DVD_DI

3-17
2. IC100 MICOM INTERFACE WAVEFORM
FIG. 2-1
FIG. 2-2
6
5
5
6
1) During power on
2) During normal play
ZD101
5V1
18 I_MIC_SENSE
19 I_SPBANA
20 I_DECK_LBAF_A
21 I_DECK_LBAF_B
22 I_HALL_A
23 0_DVD_DO
24 I_DVD_DI
25 I_DVD_CLK
26 0_VFD_DO
27 0_VFD_STB
28 0_VFD_CLK
29 0_DVD_RST
30 0_HP_MUTE
31
I_VOL_B
32
I_VOL_A
33
NC
34
0_PWM_RST
35
0_BQ_RST
36
0_ADC_RST
37
0_BQ_STB
38
0_DSP_RST
IC100
LC87F5NC8A
R166 100R
1
IN
2
DGND
3
OUT
IC101
KIA7042AF
R102
680R(2)
R101
4K7
R100
4K7
TP210
HP MUTE
DVD RST
VFD CLK
VFD STB
VFD DO
DVD CLK
DVD DI
DVD DO
LBAF-B
SPBANA
MIC SENS
VOL_B
VOL_A
TP211
PWM_RST
BQ_RST
BQ_STB
TP112
PWR SENS
6
5
IC100 Pin25 DVD_CLK
IC100 Pin25 DVD_CLK
IC100 Pin29 DVD_RST
IC100 Pin29 DVD_RST

3-18
3. SLED DRIVE AND MOTOR WAVEFORM
FIG. 3-1
FIG. 3-2
8
7
7
8
1) When focus search
2) During normal play
5
1
DO4-
16
DO4+
17
DO5-
18
DO5+
19
VCC2
20
IN5
21
IN4
22
GND
23
BIAS
24
CTL5
25
REV5
26
FWD5
27
DO6+
28
DO6-
0
3
PGND
IC401
IP9011
C402
XX
R417
33R
C435
104P
C440
104P
R402
1K2
R448
1K2
R424
8K2
R410
5K1
C404
100uF
10V
C451
104P
C423
474P
C420
474P
TURD_N+
TURD_N-
TURO+
TURO-
GND
SVREF
SPINDLBD
SLD
SLED+
SLED-
SPIN-
SPIN+
D
B
B
F0D
F0D
TRD
TRD
SLD
SLD
SPINDLBD
SPINDLBD
CD_DVD_SLCT
CD_DVD_SLCT
DRV_MUTE
DRV_MUTE
CDLD
CDLD
DVDLD
DVDLD
DVDMDI
DVDMDI
VC
VC
SVREF
SVREF
OPEN
OPEN
CLOSE
CLOSE
OUT_SW
OUT_SW
IN_SW
IN_SW
UP_SW
UP_SW
DOWN_SW
DOWN_SW
SPNN
SPNN
SPNP
SPNP
PU_DET
PU_DET
SENSOR
SENSOR
TURO+
TURO+
TURO-
TURO-
8
7
IC401 Pin18 SLED+
IC401 Pin18 SLED+
IC401 Pin15 SPIN+
IC401 Pin15 SPIN+

3-19
4. SPINDLE DRIVE AND MOTOR WAVEFORM
FIG. 4-1
10
9
1) When focus search failed or there is no disc on tray
1D
O
1
-
2D
O
1
+
3D
O
2
-
4D
O
2
+
5V
C
C
1
6I
N
2
7I
N
1
8M
U
T
E
9C
T
L
3
10 REV3
11 FWD3
12 SVCC
13 DO3+
-
3
O
D
4
1
D
N
G
P
9
2
IC401
IP9011
C419
473P
R444
9K1
R404
20K
R447
1K
R422
1K
C421
103P
C425
103P
R452
100R
R408
3K3
C414
104P
C409
220uF
10V
C413
104P
C428
104P
C408
220uF
10V
C439
100P
C438
100P
C188
NC
F+
F-
TR+
TR-
F0D
TRD
D
N
G
D
N
G
DRV_MUTE
CLOSE
OPEN
GND
LOAD+
LOAD-
GND
GND
10
9
IC401 Pin6 FOD
IC401 Pin3 F+

3-20
5. RF, FOCUS AND TRACKING ERROR WAVEFORM
FIG. 5-1
FIG. 5-2
12
11
13
11
12
13
1) During normal play
2) When TOC reading
100
VS33
101
TWD2/PWM_03L/DAC_03L
102
TWD3/PWM_03R/DAC_03R
103
TBCK/PWM_01R/DAC_01R
104
VDD
105
VID_XO
106
VID_XI
107
VS33
108
VD33
109
LDCO
110
AMPSTBY
111
CLOSESW
112
CLOSE
113
OPENSW
114
OPEN
115
VPB
116
VGB
117
MP
118
DB
119
MB
120
TE
121
FE
122
V1650
123
PI
124
REX
125
DVDLD
126
COLD
127
VBO
128
DVDPD
156
VD33
155
DVCC
154
AVS33
153
AVD33
152
REFD
151
CDPD
150
TRO
149 SLO
148
FDO
147
DMO
146
SLV
145
MIN
144
H
143
G
142
F
141
E
140
D
139
C
138
B
137
A
136
DRFP
135
DRFN
134
VGA
133
VPA
132
SPNP/MNTRP/IMSR
131
SPNN/MNTRN
130
AGC1
129
AGC2
IC1
ESS8390/8391SCC
R82
4.7K
C16
104
C15
100uF
16V
L3
FB2500
C76
104
C508
100uF
16V
C5C9
104
L511
FB252
C77
680p
C5C1
680p
C5A7
104
C543
104
C5A1
104
C5A2
104
C91 104
C92 104
C93 104
C75 104
C94 154
C95 102
C585 472
C96 NC
C97 NC
C98 223
R5B0 10K
C99 102
C100 100p
C184 NC
R198
33R/HB-121
R220
33R/HB-121
C69 NC
REFD
DVDMDI
TRD
SLD
F0D
SPINDLBD
MN
VC
F
E
D
C
B
A
RF
SPNP
SPNN
DVDMDI
VC
CDLD
DVDLD
MN
SVREF
PU_DET
DRV_MUTE
CD_DVD_SLCT
XIN
XOUT
REFD
VD33RF
VD33RF
+3.3VD
DADATA_1
DADATA_2
CLOSE
OPEN
12
13
11
IC1 Pin136 RF
IC1 Pin136 RF
IC1 Pin120 TE
IC1 Pin120 TE
IC1 Pin121 FE
IC1 Pin121 FE

3-21
3-22
Connector
EA
MAIN PCB TO USB PHONE PCB
MAIN PCB TO 3DISC DECK
MAIN PCB TO MIC PCB
MAIN PCB TO LOGIC DECK
2
3
2
2
SMPS PCB TO MAIN PCB
MAIN PCB TO KEY3 PCB
1
1
MAIN PCB TO DISPLAY PCB
1
DISPLAY PCB TO KEY1 PCB
1
1
DISPLAY PCB TO KEY2 PCB
4
1
L
A
T
O
T
Controller
2P
LEFT
RIGHT
Y/U/V/VIDEO OUT PUT
AUX IN PUT
MAIN BOARD PCB
FM ANTENNA
AM ANTENNA
SIP1
P7709
P400
P406
SIP2
P1
CN1
P7904
CN3
P7905
P33
CON901
P7906
P7709
VFD
DISPLAY +KEY BOARD
IR
CN902
KEY2 PCB
KEY1 PCB
CN903
CON903
CON902
2P
MDD65 SMPS_60W
J1
J2
8P
15P
FFC 23P
CRP42602
LOGIC DECK
EAZ35771501
6P
7p
9P
MIC PCB
CN905
Shief cable
3P
KEY3 PCB
3P
5P
CN906
3 DISC DVD DECK
CMS-S79RFVC
FFC 23P
FFC 9P
5P
4P
USB+PHONE PCB
CN901
CN904
WIRING DIAGRAM

3-23
3-24
BLOCK DIAGRAM
ESS8390SCC
MPEG DSP
DVD PICKUP
CDM-H1723
A,B,C,D,E,F,RF
OPEN/CLOSE
W25Q16A
FLASH 16M
FT24C02
EEPROM 2K
M
S3053
S8082
MOTOR
DRIVER
USB Host
POWER AMP
TAS5342LA
30WX2
VFD
DISPLAY
PT6324
VFD
DRIVER
Front
Key
Control
IR
4X2
MDD65 SMPS
MULTI VOLTAGE
VIDEO +COMPONENTS
OUT RCA JACK
M12L128168A-6TG
SDRAM 128M
PS9831
PWM
SOUND PROCESSOR
WM8738
ADC
D4558
OP Amp
BU4052
SWITCH
LC87F5NC8A
MCU
FT24C16
EEPROM 16K
AM/FM
Tuner
Module
YST996
Portable
In
D4558
HP Amp
L/Key
Control
R/Key
Control
S4308
Mic Amp ALC
CDL/R
KIA6225
P/B AMP
BA3308S
REC AMP
BA3216
R/P SWITCH
CRP42602
LOGIC DECK
Logic Deck
Control circuit
Disc Select
+21V
+12V
D+, D-
P Sense
-12V
+12V
+3.5V
P Cont
FL+
FL-
VKK
KEY0,KEY1,KEY2
VFD SC,CLK,DO
L/R
L/R
L/R
PWM
CLK, DI,D0,CE,
TU_SDA,SCLK,RESET
4052_A,B
FL
FR
HP
Jack
MIC
Jack
SOL_CONT,MOTOR_CONT,MODE,REC
PHOTO_OUT,HALF_SW
USB+5V

3-25
3-26
CIRCUIT DIAGRAMS
1. SMPS - POWER CIRCUIT DIAGRAM
IMPORTANT SAFETY NOTICE
WHEN SERVICING THIS CHASSIS, UNDER NO
CIRCUMSTANCES SHOULD THE ORIGINAL DESIGN BE
MODIFIED OR ALTERED WITHOUT PERMISSION
FROM THE LG CORPORATION. ALL COMPONENTS
SHOULD BE REPLACED ONLY WITH TYPES IDENTICAL
TO THOSE IN THE ORIGINAL CIRCUIT. SPECIAL
COMPONENTS ARE SHADED ON THE SCHEMATIC
FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFFER
FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.
NOTE :
1. Shaded( ) parts are critical for safety.
Replace only with specified part number.
2. Voltages are DC-measured with a digital voltmeter
during Play mode.
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
Warning
Parts that are shaded are critical with
respect to risk of fire or electrical shock.
CAUTION:
Danger if fuse is incorrectly replaced.
Replace only with the type identical to fuse rating
and(or) model name described in main label.
(2010. 06.14)
1.GND
2.GND
3.GND
4.-12V
5.+12V
6.+12V
7.5V
8.5.9V
9.3.5V
10.3.5V
11.GND
12.GND
13.36V
14.36V
15.36V
8.GND
7.CD_CTRL
6.PWR_CTRL
5.PWR_SENS
4.5.6V
3.VKK
2.FL-
1.FL+
JR2 MT_HOLE
1
1
Q3
KTA1268
D4 SR306
C4
1000uF/16V
C27 2.2uF/50V
W3 Jumper
12
C12
100uF/50V
-
+
D6
DB105G
1
1
2
2
3
3
4
4
U7 KA5M0365
GND
1
Drain
2
Vcc
3
F/B
4
Q2
KTA1273
C20
330uF/16V
D16 FR104
PC3
LTV-817
1
1
2
2
3
3
4
4
D5
UF4007
C28
103/630V
R1
56k/2W
C23 104/275V
JR1 MT_HOLE
1
1
R10
560
W15 Jumper
1
2
R14 18k
Q1
KTC3205
R19
2.2k
JR3 MT_HOLE
1
1
R8 1k
U5
KA431/TO
C24
472
C32
224
R23
33k
W18 Jumper
1
2
C18
472
D18 UG4D
W16
Jumper
1
2
C15
47uF/50V
T2
EER2828(AMP)
1
2
3
4
5
6
7
8
C11
100uF/6.3V
D15 FR104
R2 10k
C8
100uF/16V
R6
10k
C21
471/400V
R18
56k/2W
U6
KA431/TO
W2
Jumper
12
D7 SHG2D
R5
18k
W10 Jumper
1
2
C7
1000uF/25V
C13
100uF/25V
R3
10
U4 278R33
IN
1
OUT
2
GND
3
CON
4
R28 470
R26
220
R27
150
U1 78R05
IN
1
OUT
2
GND
3
CON
4
R16 1.5M/0.5W
W11 Jumper
12
R11 56
C5
1000uF/16V
D9
1N4148
PC2
LTV-817
1
1
2
2
3
3
4
4
U3
FSFM260N
GND
1
Vcc
2
Vfb
3
Ipk
4
Vstr
5
DRAIN
6
DRAIN
7
DRAIN
8
W14
Jumper
12
R4 1k
D11
FR104
C6
100uF/6.3V
W13 Jumper
1
2
C29
1000uF/25V
W19 Jumper
12
R17
47k
R21
33k
R24
33k
J3
CONN FLEX 2
1
2
C22
471/400V
RV1 471
C19
22uF/50V
C14
47uF/50V
D10
1N4148
D8 SR306
D17 FR104
R20
2k
R29
4.7k
R12
2.7k
C16
47uF/50V
W12 Jumper
12
J2
15P
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
W1 Jumper
12
t
RT1
2.7ohm/5W
Q4
KTC3205
W6 Jumper
12
D1 FR104
C10
1000uF/16V
C2
2.2uF/50V
C34
47uF/50V
W8
Jumper
12
W9
Jumper
12
R9
1
C9
68uF/450V
C3
103/630V
R15
2.7k
C17 104/275V
PC1
LTV-817
1
1
2
2
3
3
4
4
C1
68uF/450V
D13
3V
R25
10
W7 Jumper
12
C26 2.2uF/50V
C30
1000uF/25V
D19
UF4007
R13
47k
R22
33k
W17
Jumper
1
2
C35 222/400V
T1
EER2828(MULTI)
1
1
2
2
3
3
4
4
5
5
6
6
14
14
15
15
11
11
13
13
12
12
7
7
8
8
9
9
10
10
J1
8P
1
2
3
4
5
6
7
8
U2 78R12
IN
1
OUT
2
GND
3
CON
4
LF1
SQE2424
1
2
34
5
6
78
D12 FR104
F1
T3.15AL250V
C25 470pF/1kV
W4 Jumper
12
HS1
15*10
1
Q5
KTA1268
L1 22uH
-
+
D3
DB105G
1
1
2
2
3
3
4
4
JR4 MT_HOLE
1
1
W5 Jumper
1
2
R7
1k
LF2
SQE2424
1
2
34
5
6
78

3-27
3-28
2. MAIN - DVD MPEG CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
LG-MDT355/MDD265/MDD65/MDD105
MAIN BOARD DVD MPEG(ESS8390)
1.5V
USB JACK
GND
5V_USB
D-
D+
GND
DEBUG/NOMAL MODE
GND
SPI_RST
SPI_DO
SPI_DI
SPI_CLK
SPI_CE
3.3V
OPTION
DOWNLOAD & DEBUG
Intel Flash Option
1
2
3
IC501
NC
L208
FBS2545
R2C1 22R
R2C0 22R
C267
104P
C265
100P
C266
100P
R2A9
15K
R2A8
15K
T+20
T+21
T+22
T+24
C217
470uF
10V
1
2
3
4
5
6
JK201
RGB&CVBS
L201
FB102K
C216
470uF
10V
C218
470uF
10V
C219
470uF
10V
L202
FB102K
L205
FB102K
L206
FB102K
R226 33R
R151 33R
R175 100R
R229 33R
L215
FB272
C223
47uF
10V
C226
103P
L203
FB272
C225
103P
R203
270R(3)
C220
47uF
16V
C221
103P
ZD201
4V7
C201
4.7uF
50V
C202
4.7uF
50V
R201
91R
R202
91R
C204
222P
C205
222P
1
DVDD
2
SDATO
3
BCLK
4
FMT
5
CAP
6
VREF
7
RIN
8L
I
N
9A
V
D
D
10 AGND
11 NOHP
12 LRCLK
13 MCLK
14 DGND
IC201
WM8738
C121
10uF
10V
C122
104P
C123
10uF
10V
C124
104P
1
VD33
2
VS33
3
DSC1
4
DSC0
5
DRAS0/SEL_PLL2
6
DCAS/SEL_PLL3
7
DOE/SEL_PLL0
8
DWE/SEL_PLL1
9
DSCK
10
DQM
11
DB7
12
DB6
13
DB5
14
VD33
15
VS33
16
VDD
17
DB4
18
DB3
19
DB2
20
DB1
21
DB0
22
DB8
23
DB9
24
DB10
25
DB11
26
DB12
27
DB13
28
DB14
29
VS33
30
VD33
31 DB15
32
AUX7
33
AUX6
34
AUX5
35
AUX4
36
VD33
37
VS33
38 VDD
39
AUX3
40
AUX2
41
AUX1
42
AUX0
43
SPI_CS2
44
SPI_CS3
45
SPI_CLK
46
SPI_DI
47
SPI_DO
48
SPDIF_IN
49
SPDIF_OUT
50
AUX8/VSYNC/RXD2
51
VS33
52
VD33
53
AUX9/HSYNC/TXD2
54
AUX10/TSD[3]
55
AUX11/RSD/TDMDR
56
AUX12/RBCK/TDMCLK
57
AUX13/RWS/TDMFS
58
AUX14/TBCK/TXD1
59
AUX15/656CLK
60
AUX3[7]/CAMIN7
61
AUX3[6]/CAMIN6
62
AUX3[5]/CAMIN5
63
AUX3[4]/CAMIN4
64
AUX3[3]/CAMIN3
65
AUX3[2]/CAMIN2
66
VD33
67
VS33
68
VDD
69
AUX3[1]/CAMIN1
70
AUX3[0]/CAMIN0
71
MCLK
72
RESET
73
CLK/TDMCLK/RBCK
74
VS33
75
VD33
76
VREF
77
COMP/YUV3
78
RESET/YUV4
79
FDAC/YUV7
80
VDAC/YUV6
81
VD33DAC
82
VS33DAC
83
YDAC/YUV5
84
CDAC/YUV2
85
UDAC/YUV0
86
TDAC/YUV1
87
VD33PLL
88
VS33PLL
89
AVD33
90
USB_PO
91
USB_NO
92
ADC_BIAS
93
MIC_L
94
MIC_R
95
AVS33
96
TWS/PWM_01L/DAC_01L
97
TWD0/PWM_02L/DAC_02L
98
TWD1/PWM_02R/DAC_02R
99
VD33
100
VS33
101
TWD2/PWM_03L/DAC_03L
102
TWD3/PWM_03R/DAC_03R
103
TBCK/PWM_01R/DAC_01R
104
VDD
105
VID_XO
106
VID_XI
107
VS33
108
VD33
109
LDCO
110
AMPSTBY
111
CLOSESW
112
CLOSE
113
OPENSW
114
OPEN
115
VPB
116
VGB
117
MP
118
DB
119
MB
120
TE
121
FE
122
V1650
123
PI
124
REX
125
DVDLD
126
COLD
127
VBO
128
DVDPD
160
SOUT
159 SIN
158
VDD
157
VS33
156
VD33
155
DVCC
154
AVS33
153
AVD33
152
REFD
151
CDPD
150
TRO
149 SLO
148
FDO
147
DMO
146
SLV
145
MIN
144
H
143
G
142
F
141
E
140
D
139
C
138
B
137
A
136
DRFP
135
DRFN
134
VGA
133
VPA
132
SPNP/MNTRP/IMSR
131
SPNN/MNTRN
130
AGC1
129
AGC2
161
DMA4
162
DMA5
163
VD33
164
VS33
165
DMA6
166 DMA7
167
DMA8
168
DMA9
169
DMA11
170
DMA3
171
DMA2
172
DMA1
173
DMA0
174
DMA10
175
DRAS2
176
DRAS1
IC1
ESS8390/8391SCC
1
VDD1
2
DQ0
3
VDDQ3
4
DQ1
5
DQ2
6
VSSQ6
7
DQ3
8
DQ4
9 VDDQ9
10
DQ5
11
DQ6
12
VSSQ12
13
DQ7
14
VDD
41
VSS
42
DQ8
43
VDD
44
DQ9
45
DQ10
46
VSS
47
DQ11
48
DQ12
49
VDD
50
DQ13
51
DQ14
52
VSS
53
DQ15
54
VSS
27
VDD
26
A3
25
A2
24
A1
23
A0
22
A10/AP
21
BA1
20 BA0
19
/CS
18
/RAS
17
/CAS
16 /WE
15
LDQM
40
NC
39
UDQM
38
CLK
37
CKE
36
NC
35
A11
34
A9
33
A8
32
A7
31
A6
30
A5
29
A4
28
VSS
IC502
M12L128168A-6TG
R82
4.7K
C16
104
C15
100uF
16V
L3
FB2500
C76
104
C508
100uF
16V
C5C9
104
L511
FB252
C77
680p
C5C1
680p
C5A7
104
C543
104
C5A1
104
C5A2
104
C5A3
104
R5A2 10R
C5A4
104
R5A6
10R
R5A3
10R
C548
104
C80
100uF
16V
L528
FB2500
C534
104
1
2
3
5
7
4
6
8
R5A1
10R
1
2
3
5
7
4
6
8
R5A4
10R
C513
NC
R557
FB272
R541
33R
R83
33R
R542
33R
C539
104
C542
104
1
2
3
5
7
4
6
8
R5A5 10R
1
2
3
5
7
4
6
8
R5A7
10R
C535
104
R581
33R
R109
100R
R110
33R
R84
33R
R543
33R
R566
33R
C79
104
C541
104
R-X
NC
R5B6
NC
R5B9
0R
C549
104
C78
220uF
16V
R5B7 FB600
C550
104
R5B8 10R
R5A8 FB272
R554 FB272
R558
0R
C551
104
C540
104
R5B2
FB600
C81
104
R5A0
390 1%
C85
104
C86
104
L524
FB2500
C529
104
C87
100uF
16V
R85
33K
R540 22K
C88 473
C89
104
C90
104
L522
FB2500
C516
105
C591
100uF
16V
L519
FB2500
R560
33R/HB-121
R86
33R/HB-121
C91 104
C92 104
C93 104
C75 104
C94 154
C95 102
C585 472
C96 NC
C97 NC
C98 223
R5B0 10K
C99 102
C100 100p
C107
104
C110
104
C557
104
C5B8
104
C111
104
C118
104
C116
104
R574
4.7K
C117
104
C517
220uF
10V
L510
FB2500
X501
27MHz
C533
27P
C536
27P
R116
1M
R548
FB600
R173
75R
L28
2.2UH
C146
470P
R87
FB272
R515
10K
R118
4.7K
R88
10K
R158
4.7K
C538
104
L541
FB272
1
CE
2
SD
3
WP
4
VSS
5
SI
6
SCK
7
HOLD
8
VDD
IC503
W25Q16A
1
E0
2
E1
3
E2
4
VSS
5
SDA
6
SCL
7
WC
8
VDD
IC504
FT24C02
1
CD1
2
D1
3
CP1
4
SD1
5
Q15
6
Q16
7
GND
8
Q28
14
VCC
13
CD2
12
D2
11
CP2
10
SD2
9
Q29
IC3 SN74LV00A
R555
4.7K
R90
4K7
R91
4.7K
R92
4.7K
R93
4.7K
R596
4.7K
R95
4.7K
R544
NC
R5N0
0R
R94
4K7
R97
10K
R530
10K
L509
FB272
C530
104
L508
FB272
C120
104
R145
1K
R98
1K
CXX
NC
CX
NC
R108
NC
C515
104
R150
1K
XXX
0R
XXR
0R
R304
0R
R194
0R
Q506
A1298Y
Q503
KTD1304S
Q507
KTD1304S
1
2
3
4
5
6
7
CN2
NC
L21
FB600
R272
0R
C184 NC
C189
100P
C192
104
C3
104
C68
104P
C199
47P
C503
470P
RXXX
0R
R113
75R
L19
220nH
C126
82P
R154
4.7K
Q502
KTD1304S
L20
470nH
C198 33P
C127 33P
C128 33P
R155
75R
L25
220nH
C131
82P
R156
4.7K
Q501
KTD1304S
L26
470nH
R509
75R
L504
220nH
C200
82P
R89
4.7K
Q500
KTD1304S
L31
470nH
C147
10uF
16V
C148
10uF
16V
R193
51K
R196
51K
R197
10K
R198
33R/HB-121
RX
0R
R_X
0R
R220
33R/HB-121
R43
33R
RXX
0R
TP1
L24
FB272
R529
47K
5
1
2
3
4
CN205
1
2
3
Q11
KDS226
1
2
3
Q10
KDS226
1
2
3
Q12
KDS226
1
2
3
Q13
KDS226
R5B4
FB600
R5A9
750R
C195
103
C196
103
C149
10uF
16V
C187 100P
C18
470uF
10V
C14
103P
L23
FB272
C193
104
R132 4K7
R533 NC
R534
NC
R96
NC
R124
4K7
C186
100P
C182
330P
R551
750R
C69 NC
C55
104
C54
100uF
25V
1
2
34
IC951
KIA78R05P
R64
100R
R600
22K
C558
330P
+3.3VD
COREVCC
GND
USB_N
USB_P
GND
COMPOSITB
Y/G
PB/B
PR/R
GND
+3.3VD
GND
+12VA
GND
GND
GND
D
N
G
D
N
G
GND
RCHOUT
LCHOUT
ADBCK
ADMCLK
ADLRCK
ADDATA
CD_DVD_SLCT
DRV_MUTE
IN_SW
SVREF
CDLD
DVDLD
VC
DVDMDI
SPNN
SPNP
RF
A
B
C
D
E
F
F0D
TRD
SLD
SPINDLBD
PU_DET
DVD_DI
DVD_DO
DVD_CB
DVD_CLK
+3.3VD
+12VA
BUS-DVD
DB15
DB14
SPI_CS3
I2C_DATA
I2C_CLK
V_MUTE
DVD_DI
DVD_DO
DVD_CB
DVD_CLK
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB1
DB0
DB2
DB3
DB4
DB5
DB6
DB7
DQM
DSCLK
WE
DALRCK
CAS
RASO
CSO
BANK0
BANK1
DMA10
DMA0
DMA1
DMA2
DMA11
DMA3
DMA9
DMA8
DMA7
DMA6
DMA5
DMA4
REFD
DVDMDI
TRD
SLD
F0D
SPINDLBD
MN
VC
F
E
D
C
B
A
RF
SPNP
SPNN
DVDMDI
VC
CDLD
DVDLD
MN
SVREF
PU_DET
DRV_MUTE
CD_DVD_SLCT
XIN
XOUT
DADATA_0
DADATA_3
USB_N
USB_P
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
DQM
WE
CAS
RASO
CSO
BANK0
BANK1
CVBS
DMA10
DMA0
DMA1
DMA2
DMA3
MRST
MCLK
UP_SW
DALRCK
ADC_BCK
ADC_DATA
IN_SW
SPI_DO
SPI_DI
SPI_CLK
SPI_CLK_4MB
DMA4
DMA5
DMA7
DMA6
DMA8
DMA9
DMA11
DSCLK
DQM
DB8
DB9
DB10
DB11
DB13
DB12
SPI_CLK
SPI_DO
MRST
SPI_CLK_4MB
SPI_CLK
SPI_DO
SPI_CS3
SPI_DI
I2C_CLK
I2C_DATA
REFD
OPT_OUT
+3.3VD
+3.3VD
+3.3VD
+3.3VD
COREVCC
+12VA
VD33RF
VD33RF
+3.3VD
+3.3VD
VD33
VD33D
VD33D
USB_N
USB_P
SPI_CS3
DVD_CB
SPI_RST
GND
SPI_DO
ADDATA
ADMCLK
ADLRCK
ADBCK
XOUT
COMPOSITB
V_MUTE
PB/B
Y_G
PB_B
PR_R
PR/R
XIN
Y/G
+12VA
USB_N
USB_P
MIC_L
MIC_R
MIC_L
MIC_R
MIC_SIG
DVD_CB
DVD_DO
DVD_DI
MRST
DVD_RST
DVD_CLK
DADATA0
DADATA_1
DADATA_0
DADATA_1
DADATA1
DADATA_2
DADATA_2
DADATA2
DADATA_3
DADATA3
PWM_MUTE
PWMMUTE
ADC_BCK
DALRCK
MCLK
ADC_DATA
PWM_MUTE
OUT_SW
OUT_SW
CLOSE
CLOSE
OPEN
OPEN
TURO+
TURO+
TURO-
TURO-
SENSOR
SENSOR
DOWN_SW
DOWN_SW
UP_SW
UP_SW
DOWN_SW
SENSOR
TURO-
TURO+
CD_DVD_SLCT
DRV_MUTE
OPEN
CLOSE
OUT_SW
IN_SW
SVREF
CDLD
DVDLD
VC
DVDMDI
SPNN
SPNP
RF
F
E
A
B
C
D
F0D
TRD
SLD
SPINDLBD
PU_DET
Y_G
CVBS
PR_R
PB_B
RASO
+3.3VD
+3.3VD
GND
+3.3VD
WE
OPT_OUT
+3.3VD
GND
GND
GND
GND
GND
DALRCK
CAS
GND
+3.3V
+3.3V
GND
GND
XOUT
GND
+5.6VA
+5VM
SPI_DI
SPI_CS3
(2010. 06.14)

3-29
3-30
3. MAIN - MCU CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
MAIN BOARD MCU
LG-MDT355/MDD265/MDD65/MDD105
GND
RESET
DBBUG0
DBBUG1
DBBUG2
TO PWM
FROM SMPS
FROM SMPS
GOTO FAN
GND
FAN DC(6.5 11V)
FL+
FL-
VKK
DGND_CPU
+5.6V
PWR_SENS
PWR_CTRL
CD_PWR_CTRL
TO DECK
GND
-12VA
+12VA
GND
GND
+5VM CD
+5.6_MCU
+3.3VD
+3.3VD
PGND
PGND
+36VP
+36VP
+36VP
+12VA
F+
F-
-VKK
DGND
+5V6
VFD-STB
VFD-DATA
VFD-CLK
REMOTE-INT
DGND
VOL+A
VOL-B
+12VA
KEY1
KEY3
VOL_LED1
VOL_LED2
VOL_LED3
VOL_LED4
VOL_LED5
VOL_LED6
VOL_LED7
VOL_LED8
KEY2
GND
TO FRON PCB BOARD
TO DVD ESS8390
TO KARAOKE KEY BOARD
TO MIC BOARD
TO ADC IC
KEY3
MIC_SENS
GND
MIC OUT
+12VA
1B
0
2B
1
3B
2
4G
N
D
5
SDA
6
SCL
7
NC
8
VCC
IC103
FT24C16A
1
OUT
2
IN-
3
IN+
4
VSS
5
1N+
6
1N-
7
OUT
8
VCC
IC801
MC4580
X101
32.768KHz
C115
104P
R163 4K7
D102
IN4001
Q801
KRC103S
Q800
D8550
ZD101
5V1
C109
220uF
10V
1 0_TUNER_CLK
2 0_TUNER_GP02
3 0_VFD_PWM
4 I_PWR_SENSE
5V
F
D
_
R
S
T
6I
_
D
V
D
_
C
B
7I
_
R
E
M
O
C
O
N
8 RESET
9X
T
1
10 XT2
11 VSS1
12 X1
13 X2
14 VDD1
15 I_KEY1
16 I_KEY2
17 I_KEY3
18 I_MIC_SENSE
19 I_SPBANA
20 I_DECK_LBAF_A
21 I_DECK_LBAF_B
22 I_HALL_A
23 0_DVD_DO
24 I_DVD_DI
25 I_DVD_CLK
26 0_VFD_DO
27 0_VFD_STB
28 0_VFD_CLK
29 0_DVD_RST
30 0_HP_MUTE
31
I_VOL_B
32
I_VOL_A
33
NC
34
0_PWM_RST
35
0_BQ_RST
36
0_ADC_RST
37
0_BQ_STB
38
0_DSP_RST
39
VSS4
40
VDD4
41
I_PORT_SNS
42
I_HP_SNS
43
I_DSP_ESY
44
I_DSP_IRQ
45
D_MOTOR
46
D_SCL_A
47
D_SCL_B
48
D_REC_BIAS
49
D_REC_SW
50
D_REC_MUTE
51
0_PB_MUTE
52
0_TAPE_AB
53
I_AMP_PROTECT
54
I_AMP_SD
55
VDD2
56
VSS2
57
0_AMP_PON
58
0_PWR_CTRL
59
0_EXP_CLK1
60
0_EXP_DAT1
61
0_FAN_CTRL
62
0_SCART_RGB_VIDEO
63
0_SCART_TVMODE
64
0_16:9_4:3
65
W_MUTE
66
0_VOL_LBD1
67
0_VOL_LBD2
68
0_VOL_LBD3
69
0_VOL_LBD4
70
0_VOL_LBD5
71
0_VOL_LBD6
72
0_VOL_LBD7
73
0_VOL_LBD8
74
0_VOL_LBD0
75
I_HALL_B
76
OTW
77
NC
78
0_4052_1B
79
0_4052_1A
80
I_BASS_JOG_A
81 I_BASS_JOG_B
82 I_MIDOLB_JOG_B
83 I_MIDOLB_JOG_A
84 0_ADC_CLK
85 0_ADC_DAT
86 0_PWM/DSP_DAT
87 0_PWM/DSP_CLK
88 VSS3
89 VDD3
90 DBGP2
91 DBGP1
92 DBGP0
93 P_BBP_DAT
94 P_BBP_CLK
95 I_TREELE_JOG_B
96 I_TREELE_JOG_A
97 NC
98 0_TUNER_RST
99
0_TUNER_CE
100 P_TUNER_DAT
IC100
LC87F5NC8A
R127 4K7
R182 100R
R136 100R
R114 100R
R1C7 100R
R140 4K7
R1C6 100R
R1C5 100R
R1D1 100R
R18
100R
R166 100R
R602 100R
R176 100R
R177 100R
D101
IN4001
C101
104P
R137
100R
1
IN
2
DGND
3
OUT
IC101
KIA7042AF
R102
680R(2)
R101
4K7
R100
4K7
R122 22K
R120 10K
R61 10K
R119 10K
R115
330K
C112
104P
R199 4K7
TP101
TP103
TP104
TP106
TP210
MICON_RST
C114
104P
R54 100R
C113
104P
R603 100R
R112 100R
TP107
R604 100R
R605 100R
R106
100R
4
3
2
1
5
P7709
R192 100K
R164 100K
R117 100K
TP197
TP196
TP195
C108
104P
C102
223P
R189 100R
R190 100R
1
VCC
2
GND
3
OUT
IC102
KIA7027
R1A9
1K
R191
4K7
C103
30P
C104
30P
R105
4M7
R104
330K
X100
9.8304MHz
R107
1M
C105
33P
C106
33P
R902 104
L5F1
104
C1F2
104P
R63
100R(FX)
R153 100R(FX)
FB612
BBAD
FB611
BBAD
FB613
FB2500
R683 47K(FX)
R684 47K(FX)
C674
47P
C675
47P
R810
560R
R817
560R
C804
X(272)
C806
X(272)
R816 20K
C807
220P
R815 7K5
R809 20K
C802
220P
R808 7K5
R813
470R
R806
470R
C809
4.7uF
C800
4.uF
R805
82R
R811
82R
C812
104P
C801
22P
C810
47uF
16V
C811
47uF
16V
C813
104P
C808
22P
R807
100K(27K)
R814
100K(27K)
1Y
0
2Y
2
3Y
4Y
3
5Y
1
6I
N
H
7V
E
E
8V
S
S
16
VDD
15
X2
14
X1
13
X
12
X0
11
X3
10
A
9
B
IC200
YD4052
C826
104P
C825
10uF
50V
R803
220R
R840 33R
R839 1K
R836 33R
R835 33R
R832 33R
R834
4K7
R838
4K7
FB800
FB600
R65
X(10K)
C29
820P
R897
X(10K)
C30
820P
FB901
NC
C836
100uF
16V
C834
104P
R60 100R
R59 100R
R58 100R
R57 100R
R129 100R
R162 100R
R56 100R
R55 100R
R170 100R
R169 100R
R184 100R
R183 100R
R178 100R
R181 100R
1
2
3
4
5
6
7
8
P7904
8P/2.0MM
C873
104P
C882
104P
C883
104P
C884
104P
C887
104P
R849
10K
R848
1K
R847
47K
R846 330R
R845 330R
R844 330R
R843 330R
R842 330R
R885
47K
1
2
P7708
CN/2PIN
C841
104P
C840
100uF
16V
TP134
TP1A7
TPA16
TP1A5
TP137
TP136
TP135
TP1A4
TP138
TP139
TP140
TP141
TP185
TP184
1
2
3
4
5
6
7
8
9
JK554
AUX-IN
L13
2.2UH
R20
47K
L14
2.2UH
L15
2.2UH
R21
47K
C881
330P
R892
7K5
880
330P
R886
7K5
C'17
104P
R5 0R(AUX)
R13 0R(AUX)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
P1
15P/2.5MM
C874
104P
R48
NC
C23
NC
C22
NC
R50
3K3_NC
R51
1K_NC
R52
3K3
R53
3K3
R49 1K_NC
C803
4u7
C805
4u7
9
8
7
6
5
4
3
2
1
1
LCH
2
GND
3
RCH
4
VCC
5
SCLK
6
SDIO
7
SEN
8
RST
9
GPIO2/INT
TUN800
R141 NC
R142
0R
1
2
3
P7906
3P/2.0MM
R23
0R
FB5
FB2K5
FB4
FB2K5
FB3
FB2K5
FB2
FB2K5
FB1
FB2K5
C21
103P
C24
103P
C25
103P
FB8
FB2K5
FB9
FB2K5
C28
103P
C31
103P
FB6
FB2K5
C26
103P
FB601
FB2K7
FB10
FB2K5
R44
4K7
R606
6K8
C57
100uF
16V
C142
104P
C139
104P
C145
104P
C144
104P
C154
104P
C166
104P
C159
104P
C143
104P
C156
104P
C136
104P
C133
104P
C138
104P
C140
104P
C141
104P
C135
104P
C157
104P
C163
104P
C190
104P
C181
104P
C177
104P
C173
104P
C172
104P
C176
104P
C194
104P
C171
104P
C178
104P
C167
104P
C180
104P
C174
104P
C165
104P
C164
104P
C175
104P
C191
104P
C162
104P
C170
104P
C160
104P
C158
104P
C155
104P
C134
104P
C35
104P
R67
0R
R68
0R
C412
104P
C415
104P
C417
104P
1
2
3
4
SIP2
R27 22K
L2
FB2K7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
P7905
23P/FFC
C53
103P
BUS-MCU
TUNER_DAT
TUNER_CE
TUNER_RST
TP198
EEPROM_CLK
EEPROM_DATA
+5V_UCOM
DBBUG0
DBBUG1
DBBUG2
PWM/DSP_CLK
PWM/DSP_DAT
TP186
TP165
HP MUTE
DVD RST
VFD CLK
VFD STB
VFD DO
DVD CLK
DVD DI
DVD DO
LBAF-B
SPBANA
MIC SENS
KEY3
KEY2
KEY1
+5.6V
X2
X1
XT2
XT1
RESET
TUNER_CLK
TUNER_GP02
VFD_PWR
DVD_CB
REMOCON
VOL_B
VOL_A
TP211
PWM_RST
BQ_RST
BQ_STB
TP112
HP_SENSE
TP110
TP109
MOTOR
D_SCL_B
REC_BIAS
D_REC_MUTE
PB MUTE
AMP PROTECT
AMP SD
AMP RST
PWR CTRL
FAN_CTRL
SCART_RGB_VIDEO101
SCART_TVMODE101
16:9/4:101
TP166
VOL LBD1
VOL LBD2
VOL LBD3
VOL LBD4
VOL LBD5
VOL LBD6
VOL LBD7
VOL LBD8
HALL B
OTW
TP111
4052 B
4052 A
RESET
DBBUG2
DBBUG1
DBBUG0
OTW
OTW
AMP_RST
AMP_RST
AMP_SD
AMP_SD
AMP_PROTECT
AMP_PROTECT
BQ_RST
BQ_RST
BQ_STB
BQ_STB
PWM/DSP_DAT
PWM/DSP_DAT
PWM/DSP_CLK
PWM/DSP_CLK
PWM_RST
PWM_RST
SPBANA
SPBANA
HP_MUTE
HP_MUTE
PWR SENS
+5V_UCOM
XT2
XT1
RESET
X2
X1
GND
GND
D
N
G
D
N
G
D
N
G
D
N
G
TAPE_L
TAPE_R
GND
GND
GND
GND
+12VA
-12VA
+12VA
GND
TAPE_R
GND
POT_R
TAPE_L
POT_L
4052 A
4052 B
TUNER_CE
TUNER_DAT
TUNER_CLK
GND
GND
GND
+5VM
GND
GND
PWR_CTRL
VFD_PWR
GND
-12VA
+12VA
GND
+5VM
+5.6VA
+3.3VD
GND
+36VP
GND
FAN_CTRL
GND
+12VA
LBAF-B
HALL_B
MOTOR
D_SCL_B
REC_BIAS
PB_MUTE
D_REC_MUTE
+12VA
LCHOUT
RCHOUT
TAPE-L
TAPE-R
REC_BIAS
MOTOR
B-SOL
HALL_B
LBAF-B
PB_MUTE
REC_MUTE
TA+12V
GND
GND
GND
VFD_STB
VFD_DO
VFD_CLK
REMOCON
VOL_A
VOL_B
KEY1
KEY3
GND
VOL_LBD8
DVD_DI
DVD_DO
DVD_CB
DVD_CLK
DVD_RST
DVD_CLK
DVD_DI
DVD_DO
DVD_CB
DVD_RST
GND
-12VA
+3.3VD
KEY2
POT_R
POT_L
MIC_SENS
MIC_SIG
MIC_SIG
TUNER RST
TUNER GP02
GND
VOL_LBD1
VOL_LBD2
VOL_LBD3
VOL_LBD4
VOL_LBD5
VOL_LBD6
VOL_LBD7
KEY3
GND
GND
GND
+3.3VD
EEPROM_CLK
EEPROM_DATA
HP_SENSE
HP_SENSE
+5.6V
PWR_SENS
GND
GND
GND
GND
GND
GND
GND
D
N
G
D
N
G
MIC_SIG
+12VA
(2010. 06.14)

3-31
3-32
4. MAIN - SERVO CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
MAIN BOARD SERVO
LG-MDT355/MDD265/MDD65/MDD105
OPU(COMMON)
HFM_VCC
RF_OUT
LD_DVD
MD_DVD
VR_DVD
GND_PD
VREF
VCC
F
E
A
D
C
B
FOCUS-
TRACK ING-
TRACK ING+
FOCUS+
SW_PDIC
GND_LD
LD_CD
MD_CD
VR_CD
CL SW
OP SW
UP SW
DN SW
LD+
LD-
PHOTO
D_SENSE
GND
TUR_N-
TUR_N+
SL+
SL-
(SP)DCMO+
(SP)DCMO-
S3053+S8082
1
2
3
4
5
6
7
8
9
18
17
16
15
14
13
12
11
10
19
20
21
22
23
P400
23P FFC
R416
100R
C422
104P
C401
47uF
16V
Q403
KTC3875S
Q405
2SA1037K
Q402
2SK3018
D3
DAN202K
D2
DAN202K
C429
102P
DVDLD0
R456
2R2(2)
C410
220uF
6V3
R413
10K
Q406
2SA1037K
R446
100R
R458
2R2(2)
C407
220uF
6V3
R421
10K
C427
102P
CDLD0
C418
104P
C403
100uF
L400
FB600
L401
FB600
C442
104
C424
104
D404
DAN202K
D401
DAN202K
R426
33R
R415
22R
C431
104
C441
104
Q401
2SK3018
R411
10K
R420
1OK
R418
100K
Q404
KTC3875S
R443
10K
C406
47uF
16V
C426
104P
Q407
KTC3875S
R414
100K
R453
220K
R431 10K
VR_CD
MD_CD
LD_CD
TP401
SW_PDIC
F+
T+
T-
F-
B
C
D
A
E
F
VCC
VREF
GND_PD
VR_DVD
MD_DVD
LD_DVD
RF_OUT
HFM_VCC
R4B4
100R
R4B3 100R
R406 100R
C433
104P
C437
104P
R484 27R
R488 27R
R483 47K
R482 4K7
L402
FB2500
R485
4K7
R487
4K7
R490
4K7
R489
4K7
R481 2R2(X) C434
104P(X)
R491
2R2(X)
C436
104P(X)
R466
2R2(X)
C432
104P(X)
L4
FBS2545
C419
473P
R444
27K
R404
47K
R447
1K
R422
1K
C421
103P
C425
103P
R408
3K3
C414
104P
C409
220uF
10V
R432
56K
C439
100P
C438
100P
C402
104P
R417
33R
C435
104P
R402
1K2
R448
1K2
R424
4K7
R410
470R
C423
474P
C420
474P
R419
22K
R451
0R
R409
12K
R403
47K
R450
0R
R499
12K
R445
0R
R425
0R
C511
100uF
16V
L520
2500
L1
2500
C544
104P
L404
FB600
C188
NC
H2
H1
1
VINFC
2
TRB_1
3
REGO_2
4
VINSL+
5
REGO_1
6
RED
7
REV
8
VCC1
9
VOTP-
10
VOTR+
11
VOSL+
12
VOSL-
13
VOFC-
14
VOFC+
28
MUTE
27
BIAS
26
VINTK
25
TRB_2
24
RESET
23
VINLD
22
GND
21
VCTL
20
VCCD
19
VCC2
18
VOLD-
17
VOLD+
16
VOTK-
15
VDTK+
IC808
S3053
8V
D
2
7P
V
C
C
6S
V
C
C
5V
I
N
2
4
VIN1
3
VCTL
2
VD1
1
GND
IC806
S8082
Q4
C8550D(DIP)
R62
22K
R66
5.1K
R69
0R
R70
0R
R77
100R
R78
15K
R79
6.8K
ZD1
3V3
R601
1R
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
P604
15P/FFC
C617
104P
C612
100uF
10V
R130
0R
R131
2.2R(1206)
R134
2.2R(1206)
R139
2.2R(1206)
R143
2.2R(1206)
C20
104P
C27
47uF
16V
R144
10K
R147
5K6
R121
1K5
GND
BUS-RF
GND
GND
DVDLD
CDLD
GND
GND
GND
GND
DVDMDI
F+
TR+
TR-
F-
B
C
D
A
E
F
VC
RF
GND
GND
PU_DET
VD33RF
GND
GND
5VM
+5VM
5VM
5VM
GND
GND
CD_DVD_SLCT
GND
GND
RF
RF
F
F
E
E
A
A
C
C
D
D
B
B
F0D
F0D
TRD
TRD
SLD
SLD
SPINDLBD
SPINDLBD
CD_DVD_SLCT
CD_DVD_SLCT
DRV_MUTE
DRV_MUTE
CDLD
CDLD
DVDLD
DVDLD
DVDMDI
DVDMDI
VC
VC
SVREF
SVREF
OPEN
OPEN
CLOSE
CLOSE
OUT_SW
OUT_SW
IN_SW
IN_SW
UP_SW
UP_SW
DOWN_SW
DOWN_SW
SPNN
SPNN
SPNP
SPNP
PU_DET
PU_DET
SENSOR
SENSOR
TURO+
TURO+
TURO-
TURO-
+3.3VD
CHGND
GND
SPIN-
SPIN+
SLED-
SLED+
BUS-RF
+3.3VD
5VM
GND
5VM
5VM
GND
DOWN_SW
UP_SW
OUT_SW
IN_SW
LOAD-
LOAD+
SENSOR
TURD_N-
TURD_N+
GND
COREVCC
GND
RFVCC50
RFVCC50
DRV_MUTE
SVREF
TRD
SPINDLBD
SPIN+
SPIN-
TR+
TR-
SPNN
SPNP
F0D
SLD
CLOSE
OPEN
LOAD+
LOAD-
SLED+
SLED-
F+
F-
TURD_N+
TURD_N-
TURO-
TURO+
(2010. 06.14)

3-33
3-34
5. MAIN - D/AC CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
MAIN BOARD D/AC
LG-MDT355/MDD265/MDD65/MDD105
HP_SENSE
1
IO_VSS1
2
PLL_DVSS
3
PLL_DVDD
4
IO_VDD4
5
IO_VSS5
6
PLL_AVDD
7
IO_VSS7
8
PLL_AVSS
9
IO_VSS9
10
IO_VDD10
11
MBCK
12
MLPCK
13
DVDD13
14
DVSS14
15
MSDIN0
16
MSDIN1
17
MSDIN2
18
MSDIN3
19
SBCK
20
SLPCK
21
IO_VSS21
22
IO_VDD22
23
SSDIN0
24
SSDIN1
25
SSDIN2
26
SSDING
27
BXT_MUTE
28
IO_VSS28
29
IO_VDD29
30
MIC_MCLK
31
MIC_BCK
32
MIC_LRCK
33
MIC_SDIN
34
DVDD34
35
DVSS35
36
PWM_SWL_M
37
PWM_SWL_P
38
IO_VSS38
39
IO_VDD39
40
PWM_HP_R_M
41
PWM_HP_R_P
42
DVDD42
43
DVSS43
44
IO_VSS44
45
PWM_HP_L_M
46
PWM_HP_L_P
47
IO_VDD47
48
PWM1_M
49
PWM1_P
50
IO_VSS50
51
PWM2_M
52
PWM2_P
53
IO_VSS53
54
PWM3_M
55
PWM3_P
56
IO_VDD56
57
IO_VSS57
58
PWM4_M
59
PWM4_P
60
IO_VSS60
61
PWM5_M
62
PWM5_P
63
DVSS63
64
IO_VSS64
65
IO_VDD65
66
DVDD66
67
PWM6_M
68
PWM6_P
69
IO_VSS69
70
PWM7_M
71
PWM7_P
72
IO_VDD72
73
IO_VSS73
74
PWM8_M
75
PWM8_P
76
OVBPLOAD
77
BPD_BNA
78
SO_SDA
79
SCK_SCL
80
DVDD80
81
DVSS81
82
SI/I2C_ADD
83
/CS/I2C_AD2
84
SPI/IC2
85
IO_VSS85
86
CLK_IN
87
IO_VDD87
88
DMIX_LRCK
89
DMIX_BCK
90
DMIX_SDOUT
91
DVDD91
92
DVSS92
93
DMIX_MCLK
94
IO_VDD94
95
IO_VSS95
96
/RESET
97
TEST_MODE1
98
TEST_MODE2
99
SCAN_BNA
100
TEST_MODE3
IC604
PS9831
Q802
C8550
Q803
C8050
C678
22P
R667
120R
D605
1SS355
X601
12.288MHz
FB609
FB2K7
C818
22uF
50V
1
OUT
2
IN-
3
IN+
4
VSS
5
1N+
6
1N-
7
OUT
8
VCC
IC802
MC4580
1 VDDA
2V
S
S
A
3O
U
T
4S
T
R
O
B
E
5
IN
6
GND
7
RESET
8
CKIN
IC601
XX(MSGEQ7N(FO))
R666
1M
C673
22P
R875
4K7
R876
10R
Q805
KRC231
Q804
KRC231
R873
1K
R874
1K
R857
8R2
R861
8R2
R858
10K
R862
10K
R859
2R2
R860
2R2
C842
104P
C844
104P
R863
6K8
C847
47P(100P)
R856
6K8
C849
47P(100P)
R855
6K8
R854
6K8
R864
6K8
R865
6K8
R868
68K
R867
68K
C851
47P
C850
47P
R853
15K
R852
15K
R869
15K
R870
15K
C875
100P
C854
100P
C861
22P
C862
22P
C864
22P
C863
22P
C857
330P
C858
330P
C856
330P
C855
330P
R850
10K
R851
10K
R871
10K
R872
10K
C649
103P
R665
1K
R674 10K
C650
104P
C656
104P
R675 10K
R676 10K
R677 10K
C663 104P
R669
10K
R672
10K
R670
100R
R671
100R
R673
1K2
C664
104P
C670
104P
C655
104P
C619
104P
C657
104P
R680
10K
R652 10K
R561
220K
C608
33P
R688 1K
R689
100K
R659 100R
C609 104P
C610
102P
D604
1SS355
R664
1K
R668
100K
R662
22K
C607
120P
Q601
C9014
R641
100R
R642
1M
R640
22K
C602
2U2
R643
100K
C601
2U2
R638
NC
D603
1SS355
D602
1SS355
ZD602
5V1
R639
220K
C690
0.1uF
50V
R685
100R
R658 100R
R646 10K
R647 10K
R648
10K
R649
10K
C603
2U2
C604
2U2
C606
330P
C605
330P
R645
220K
R644
220K
R687
NC
R686
NC
C660 104P
C665
470uF
10V
C651
104P
C653 104P
C631
104P
C654
104P
R660
100R
R678
NC
R655 100R
R657
100R
R656
100R
C640
104P
R654
100R
R653
100R
C642
104P
C641 104P
C636
104P
C645
10uF
16V
C644
104P
C613
103
C639
10uF
16V
C643
104P
FB608
FB2K7
FB607
FB2500
C646
104P
C647
1000uF
10V
C611
104P
4
3
2
1
SIP1
4P/2.0MM
R1C1
100R
R103
10K
C859
4.7uF
C860
4.7uF
C853
4.7uF
C852
4.7uF
R160
0R
R161
NC
D600
1N4148
C625
220uF
16V
C846
220uF
16V
C848
220uF
16V
D601
1N4148
C600
220uF
16V
C682
47uF
25V
C681
47uF
25V
R877
0R
HP_MUTE
+5.6VA
HP_R
HP_L
+12VA
-12VA
PWM_RST
+5V_UCOM
PWM/DSP_CLK
PWM/DSP_DAT
PWM_FL+
PWM_FL-
PWM_FR+
PWM_FR-
PWM_SW+
PWM_SW-
TP630
TP629
TP628
TP627
TP626
TP625
+5VM
TP612
BQ_RST
+12VA
SPBANA
BQ_STB
REC_R
REC_L
TP620
TP619
TP618
TP617
TP616
TP615
PWM_MUTE
DADATA_3
DADATA_0
DADATA_2
DADATA_1
DALRCK
ADC_BCK
+3.3VD
BUS-DAC
BUS-DAC
HPLM
HPLP
HPRP
HPRM
HP_L_P
HP_L_M
HP_R_P
HP_R_M
GND
HP_SENSE
+5.6V
$$$28504
+5.6V
GND
(2010. 06.14)

3-35
3-36
6. MAIN - AMP CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
MAIN BOARD AMP
2.1 CH_SUBWOOFER OPTION
LG-MDT355/MDD265/MDD65/MDD105
FL-
FL+
FR-
FR+
SW+
SW-
MDD265 IC700 (TAS5352A) IC700(NC) WOOFER PART NC
MDT355 IC700 (TAS5342A) IC701(TAS5342A)
MDD105 IC700 (TAS5342LA) IC700(NC) WOOFER PART NC
MDD65 IC700 (TAS5342LA) IC700(NC) WOOFER PART NC
C703 470uF/35V
L707,L708,L709,L710 15uH/4A
L707,L708,L709,L710 15uH/4A
C703 470uF/35V
C680
47uF
35V
R702
10R(3)
C706
104P(2)
Q701
8550
Q702
KRC103S
-
+
FB1104
FBS2545
1G
V
D
D
_
B
2O
T
W
3N
C
4N
C
5S
D
6P
W
M
_
A
7 RESET_AB
8P
W
M
_
B
9O
C
_
A
D
J
10 GND
11 AGND
12 VREG
13 M3
14 M2
15 M1
16 PWM_C
17 RESET_CD
18 PWM_D
19 NC
20 NC
21 VDD
3
2
C
_
D
D
V
G
2
2G
V
D
D
_
D
24
EST_D
25
NC
26
PVDD_D
27
PVDD_D
28
OUT_D
29
GND_D
30
GND_C
31
OUT_C
32
PVDD_C
33
EST_C
34
EST_B
35
PVDD_B
36
OUT_B
37
GND_B
38
GND_A
39
OUT_A
40
PVDD_A
41
PVDD_A
42
NC
43
EST_A
44
GVDD_A
IC700
TA53X2/XX
C784
104P
C793
104P
R701
10R(3)
C705
104P(2)
C724
104P
R712 22K
R798 100R
R703 100R
R704 100R
R708 100R
R709 100R
R719 100R
R723 100R
R726
10R(3)
C739
104P(2)
R727
10R(3)
C740
104P(2)
R724 1R(3)
C738
104P(2)
C725
10uF
50V
R750
1K(2)
R754
1K(2)
C780
104P(2)
R755
100K(2)
R756 10K(2)
C710
333(2)
1
2
3
4
5
6
JK701
C722
333(2)
C717
224P(2)
C715
224P(2)
C721
330P(2)
C712
330P(2)
R707
18R(2)
R711
18R(2)
C704
104P(2)
R700
3R3(2)
C708
103P(2)
C703
1000uF
50V
C723
333(2)
C737
333(2)
C732
224P(2)
C730
224P(2)
C736
330P(2)
C727
330P(2)
R718
18R(2)
R721
18R(2)
C720
224(2)
R710
2R2(2)
C711
224(2)
R706
2R2(2)
C795
684S(2)
C719
224(2)
C714
224(2)
C718
104(2)
C713
104(2)
C7G1
103(2)
R705
3R3(2)
C7G2
103(2)
R713
3R3(2)
C735
224(2)
R720
2R2(2)
C726
224(2)
R717
2R2(2)
C794
684S(2)
C734
224(2)
C729
224(2)
C733
104(2)
C728
104(2)
C7G3
103(2)
R716
3R3(2)
C7G4
103(2)
R722
3R3(2)
R730
10R(3)
C748
104P(2)
1G
V
D
D
_
B
2O
T
W
3N
C
4N
C
5S
D
6P
W
M
_
A
7 RESET_AB
8P
W
M
_
B
9O
C
_
A
D
J
10 GND
11 AGND
12 VREG
13 M3
14 M2
15 M1
16 PWM_C
17 RESET_CD
18 PWM_D
19 NC
20 NC
21 VDD
3
2
C
_
D
D
V
G
2
2G
V
D
D
_
D
24
EST_D
25
NC
26
PVDD_D
27
PVDD_D
28
OUT_D
29
GND_D
30
GND_C
31
OUT_C
32
PVDD_C
33
EST_C
34
EST_B
35
PVDD_B
36
OUT_B
37
GND_B
38
GND_A
39
OUT_A
40
PVDD_A
41
PVDD_A
42
NC
43
EST_A
44
GVDD_A
IC701
TA53X2/XX
R729
10R(3)
C747
104P(2)
C765
104P
R740 22K
R799 100R
R731 100R
R732 100R
R736 100R
R737 100R
R746 100R
R749 100R
R752
10R(3)
C775
104P(2)
R753
10R(3)
C776
104P(2)
C774
104P(2)
C751
333(2)
C763
333(2)
C758
224P(2)
C756
224P(2)
C762
330P(2)
C753
330P(2)
R735
18R(2)
R739
18R(2)
C746
104P(2)
R728
3R3(2)
C750
103P(2)
C745
1000uF
50V
C764
333(2)
C773
333(2)
C770
224P(2)
C768
224P(2)
C772
330P(2)
C766
330P(2)
R744
18R(2)
R747
18R(2)
C761
224(2)
R738
2R2(2)
C752
224(2)
R734
2R2(2)
C845
684S(2)
C760
224(2)
C755
224(2)
C749
104(2)
C754
104(2)
C7G5
103(2)
R733
3R3(2)
C7G6
103(2)
R741
3R3(2)
R748
10K(2)
R743
10K(2)
C769
684S(2)
C771
224(2)
C767
224(2)
12
3
4
L706
22UH
12
3
4
L705
22UH
12
3
4
L714
22UH
-
+
L708
10UH
-
+
L709
10UH
-
+
L710
10UH
-
+
L707
10UH
-
+
L716
10UH
-
+
L715
10UH
-
+
L712
10UH
-
+
L711
10UH
R135
100R
R787
1R(3)
ZD202
12V
GND
+12VA
OTW
AMP_SD
PWM_FL+
AMP_RST
PWM_FL-
PWM_FR+
PWM_FR-
+5.6V
AMP_PROTECT
+36VP
PWM_SW+
PWM_SW-
(2010. 06.14)

3-37
3-38
7. AUDIO DECK SYSTEM CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
TO DECK
+LCH
-LCH
-RCH
+RCH
E.HD
E.HD
RP/B_HD_RCH
RP/B_HD_LCH
B-HALF SW
REC SW-R
M+
SOL.+
DECK MECHANISM SIDE
MOTOR
B-MODE SW
LG-MDT355/MDD265/MDD65/MDD105
AUTO DECK SYSTEM
ERASE_HEAD
B-SOL
REC SW-F
REC SW-R
B-PHOTO OUT
B-MODE SW
GND(SOL)
B-SOL
GND(M/T.SW)
B-HALF SW
VCC 12V
REC SW-F
1
2
3
4
VCC
5
GND
6
7
8
9
GND
U201
KIA6225
ALC
1
2
3
4
GND
5
ALC
6
VCC
7
8
9
U203
BA3308
1
2
3
4
CONT
5
GND
6
VCC
7
8
9
U202
BA3126N
L17
2A621
R277
15K
C247
153P
C210
102P
C222
472(M)
C249
100/16
C236
122M
C258
270P
C257
270P
Q201
STD1862LPF
Q202
9014
C241
10/50
R271
10
R252
1K
R253
6K2
R240
6K2
R254
1K5
R256
27K
C252
47/16
R276
220K
R255
27K
R257
1K5
C296
47/16
C150
100/16
C298
10/35
C32
1000P
C255
1000P
C254
10uF/25V
C33
10uF/25V
R213
47K
R263
47K
C213
270P
C263
270P
C248
1000P
C243
1000P
R251
7K5
R242
7K5
R249
2K2
R243
2K2
C244
10uF/25V
C294
10uF/25V
R250
100
C295
4.7uF/50V
R205
10K
C230
100/16
R28
100R
C227
100/16
C229
104
R215
120K
C208
103
R208
8K2
C36
390P
R29
100
C37
47/16
FB201
FB600
R211
100
R216
120K
C235
103
R217
8K2
R218
100
C233
47/16
C231
390P
FB251
FB600
C38
10uF/25V
C272
10uF/25V
R31
100K
R204
100K
C1
472M
C5
472M
R219
1K
R32
1K
C299
10uF/25V
C211
10uF/25V
R40
47K
R225
47K
R41
1K
R42
1K
C259
392
C40
392
FB203
FB600
FB253
FB600
FB204
FB2K7
FB254
FB2K7
R244
0R
R295
3K3
Q291
A1273Y
Q293
A1273Y
Q290
9014C
Q292
9014C
R293
1K
R297
150
R294
10K
R291
3K3
R296
10K
C292
22U/16V
C291
223
D290
1N4148
C293
223
R292
47K
R290
10uH
R280
2R2 1/4W
R281
560R
ZD280
9.1V
C271
100U/16
C151
104p
C288
100U/16
Q280
8050/AI
1
2
3
4
5
6
CN3
6P/2.0MM
1
2
3
4
5
6
7
8
9
CN1
9P/FC
R401
220K
R39
3K3
R33
47K
R14
8K2
R15
8K2
R37
39K
R36
8K2
R25
18K
R24
8K2
R34
56K
Q203
9014C
Q204
9014C
R45
1K
R46
1K
Q14
8550/AI
Q15
9014
R133
1K
R138
1K
R265
100K
Q2
9015C
Q1
9015C
C39
222P
C251
222P
C290
4U7
C19
103
R38
3K
R35
3K
C44
0.47uF
C52
0.47uF
+12VA
GND
GND
GND
GND
TAPE-L
TAPE-R
REC_L
REC_R
TA+12V
REC_BIAS
GND
MOTOR
B-SOL
HALL_B
GND
+5V_UCOM
LBAF-B
PB_MUTE
REC_MUTE
GND
GND
GND
CHGND
GND
GND
(2010. 06.14)

3-39
3-40
8. MIC / USB / KEY / VFD CIRCUIT DIAGRAM
A
1
2
3
4
5
6
7
8
9
10
11
12
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
ST
LG-MDT355
MIC/USB/KEY1/2/3/VFD
HEADPHONE
USB SOCKET
USB/PHONE BOARD
TO MAIN PCB PWM
TO MAIN PCB ESS
USB_GND2
USB_GND
D+
D-
USB_VCC
MIC BOARD
F-
-VKK
GND
+5V6
VFD-STB
VFD-DATA
VFD-CLK
REMOTE-INT
DGND
VOL+A
VOL-B
+12VA
KEY1
KEY3
VOL_LED1
VOL_LED2
VOL_LED3
VOL_LED4
VOL_LED5
VOL_LED6
VOL_LED7
VOL_LED8
MIC_SENS
GND
MIC OUT
KEY1 PCB
KEY3 PCB
VFD BOARD
HP-SENS
HP-L
AGND
HP-R
TO MAIN PCB ESS
KEY1-1
DGND
KEY3-1
DGND
KEY1-1
DGND
KEY3-1
DGND
DGND
KEY2
KEY2 PCB
TO MAIN PCB MICOM
TO MAIN PCB MICOM
KEY3
F+
+12VA
+12VA
VOL_LED1
VOL_LED2
VOL_LED3
VOL_LED4
VOL_LED5
VOL_LED6
VOL_LED7
VOL_LED8
+12VA
VOL_LED1
VOL_LED2
VOL_LED3
VOL_LED4
VOL_LED5
VOL_LED6
VOL_LED7
VOL_LED8
LED BOARD
TO LED BOARD
R924
3K3
R941
8K2
R923
2K2
R946
8K2
R922
1K8
R921
1K2
SW907
TUNNG+
SW904
OPEN/CLOSE
SW902
TAPE
SW917
TIMER
SW901
TUNER
SW915
DVD
SW903
AUX
SW906
STOP
SW908
R
R918
1K2
R919
1K
SW911
SET/CD PAUSE
R920
1K2
SW920
EQ
SW918
CLOCK
SW921
LG EQ
C915
104
C914
47U/50V
R906
100R
C907
47U/16V
C917
473
C916
473
C918
104
FB905
0R
R939
3K3
1
IP
2
V-
3
V+
P901
FM-6038TM2-5A
1
2
3
4
5
6
7
JK901
HP JACK(3.5mm TC38-103-01)
D+
D-
V+
V-
1
2
3
4
5
6
JK902
C919
220U/10V
R925
1K2
SW913
POWER
SW914
USB/DEMO
C912
104
C910
47U/16V
C909
104
R909
82K
R911
100K
R912
1K
1
CLK
2
DIN
3
STB
4
DOUT
5
K1
6
K2
7
OSC
8
GND
9
VDD
10
SG1/KS1
11
SG2/KS2
12
SG3KS3
13
SG4/KS4
14
SG5/KS5
15
SG6/KS6
16
SG7/KS7
17
SG8/KS8
18
SG9/KS9
19
SG10/KS10
20
SG11/KS11
21
SG12/KS12
22
SG13/KS13
23
SG14/KS14
24
SG15/KS15
25
SG16/KS16
26
SG17
27
SG18
28
SG19
29
SG20
30
SG21
31
SG22
32
SG23
33
SG24
34
GR1
35
GR2
36
GR3
37
GR4
38
GR5
39
GR6
40
GR7
41
GR8
42
GR9
43
GR10
44
GR11
45
GR12
46
GR13
47
GR14
48
GR15
49
GR16
50
VEE
51
VDD
52
GND
U901
PT6324(QFP52)/ET8862
R910
100K
C913
104
R948
15K
R949
15K
C906
104
SW912
PRESET-
SW910
TUNNG-
SW909
AUTO DJ
SW923
XDSS/MP3 OPT.
SW922
USER EQ
SW905
PRESET+
SW916
DISCSKIP
R940
5K6
R943
3K3
R930
2K2
R929
1K8
R928
1K2
R926
1K
R927
1K2
R944
3K3
R945
5K6
MARK
HNA-15MM40T
VFD
1F
-
2F
-
3N
P
4N
P
5N
X
6N
X
7N
X
8N
X
9N
X
10 NX
11 P20
12 P19
13 P18
14 P17
15 P16
16 P15
17 P14
18 P13
19 P12
20 P11
21 P10
22 P9
23 P8
24 P7
25 P6
26 P5
27 P4
28 P3
29 P2
30 P1
31 15G
32 14G
33 13G
34 12G
35 11G
36 10G
37 9G
38 8G
39 7G
40 6G
41 5G
42 4G
43 3G
44 2G
45 1G
46 NP
47 NP
48 F+
49 F+
VFD901
LG_MCT355_VFD-A
FB901 10uH
R913
1K
R914
1K
C911
100P
R915
100K
R903
15R
R904
100K
R902
15R
R901
15R
C902
47U/16V
C901
104
C903
104
R905
100K
C905
47U/16V
C904
104
D901
IN4001
D902
IN4001
C908
47P
R907
330K
R908
100R
B
A
1
3
2
VR901
R917
10K
R916
10K
R942
18K
SW919
CD SYNC
Q901
9014
D916
BLUE
R923A
471/0805
R931
10K
Q902
9014
D915
BLUE
R926A
471/0805
R932
10K
Q903
9014
D914
BLUE
R927A
471/0805
R933
10K
Q904
9014
D913
BLUE
R928A
471/0805
R934
10K
Q905
9014
D912
BLUE
R929A
471/0805
R935
10K
Q906
9014
D910
BLUE
R938A
471/0805
R936
10K
Q907
9014
D918
BLUE
R939A
471/0805
R937
10K
Q908
9014
D917
BLUE
R940A
471/0805
R938
10K
1
2
3
4
5
6
7
8
9
JK903
MIC1
1
2
3
4
5
6
7
8
9
JK904
MIC2
R950 22K
R951
22K
FB902
100M 70R
FB903
3.3uH
FB904 3.3uH
1
2
3
4
CN904
1
2
3
4
5
CN901
1
2
CN903
1
2
CN902
1
2
CON903
1
2
CON902
FB906 0R
FB907 0R
FB908
100M 70R
FB909
100M 70R
FB910
100M 600R
FB911
100M 600R
FB912
100M 600R
FB913
100M 600R
FB914
100M 600R
FB915
100M 600R
FB916
100M 600R
FB918
100M 70R
FB919
100M 600R
FB920
100M 600R
R958
3K3
R961
8K2
R957
2K2
R956
1K8
R955
1K2
SW930
3
SW927
ECHO VOL-
SW925
MIC VOL-
SW933
6
SW924
MIC VOL+
SW926
ECHO VOL+
SW929
2
SW931
4
R952
1K2
R953
1K
R954
1K2
SW934
7
R959
3K3
SW928
1
SW932
5
R960
5K6
R962
18K
SW935
8
R963
39K
SW936
9
R964
47K
SW937
0
FB922
100M 70R
R900
39K
R975
100K
R976
100K
C922
682
C923
682
R973
56K
R974
56K
C920
104
C921
104
1
2
3
CN906
R977
10K
C926
100P
C925
100P
FB223
0R
C924
104
1N
F
2G
N
D
3I
N
P
U
T
4
OUTPUT
5
ALC
6
VCC
IC1
S4308
BAN57059401
R5
100K
C2
NC
L1
FB2500
R1
220R
C5
100uF
16V
C8
104P
C4
1uF
50V
R7
1M
R2
47K
C1
NC
R3
220R
C7
22uF
16V
C6
100uF
16V
R4
100K
C3
104P
R6
1K
1
2
3
4
CN905
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
CON901
C927
103
C928
103
1
2
3
4
5
6
7
8
9
CON1001
1
2
3
4
5
6
7
8
9
CON906
VFD
P18
P19
P20
GR15
GR14
GR13
GR12
GR11
GR10
GR09
GR08
GR07
GR06
GR05
GR03
GR04
GR02
GR01
P01
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
GR01
GR02
GR03
GR04
GR05
GR06
GR07
GR08
GR09
GR10
GR11
GR12
GR13
GR14
GR15
P01
P02
P03
P04
P05
P06
P07
P08
P09
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
GND
GND
GND
F+
F-
GND
DGND
DGND
DGND
GND
GND
F-
F+
DGND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
MIC_SENS
+12VA
MIC_OUT
GND
GND
GND
(2010. 06.14)

3-41
3-42
CIRCUIT VOLTAGE CHART
PIN NO.
TEST
VOLTAGE(V)
IC1_ESS8390
1
3.28
14
3.28
16
1.45
30
3.28
36
3.28
38
1.45
52
3.28
66
3.28
68
1.45
81
3.28
87
3.28
89
3.28
99
3.28
104
1.45
108
3.28
115
3.28
133
3.28
153
3.28
155
1.45
156
3.28
158
1.45
163
3.28
IC100_ LC87F5NC8A
1
0.13
2
2.42
3
3.91
4
4.17
5N
C
6
2.57
7
2.81
8
4.82
9
2.27
10
2.56
11
GND
12
2.39
13
2.42
14
4.85
15
4.85
16
4.85
17
4.85
18
NC
19
0.23
20
NC
PIN NO.
TEST
VOLTAGE(V)
22
NC
23
2.24
24
0.09
25
3.26
26
3.39
27
4.32
28
4.73
29
4.85
30
4.85
31
4.85
32
4.85
33
NC
34
4.85
35
NC
36
NC
37
NC
38
NC
39
GND
40
4.85
41
4.83
42
4.83
43
NC
44
NC
45
4.76
46
NC
47
4.76
48
4.65
49
NC
50
4.08
51
4.03
52
NC
53
5.13
54
3.15
55
4.85
56
GND
57
4.85
58
3.94
59
NC
60
NC
61
4.75
62
NC
63
NC
64
NC
65
NC
PIN NO.
TEST
VOLTAGE(V)
67
4.74
68
4.74
69
4.74
70
4.74
71
4.74
72
4.74
73
4.74
74
NC
75
4.75
76
4.83
77
NC
78
4.85
79
4.85
80
NC
81
NC
82
NC
83
NC
84
NC
85
NC
86
4.83
87
4.81
88
GND
89
4.85
90
0.13
91
0.15
92
0.15
93
4.85
94
4.85
95
NC
96
NC
97
NC
98
2.31
99
2.42
100
0.05
IC103_T24C16A
1
GND
2
GND
3
GND
4
GND
5
4.9
6
4.9
7
GND
8
4.9
IC200_YD4052
PIN NO.
TEST
VOLTAGE(V)
2
0.01
3
0.65
40
5
0.39
60
70
8
GND
90
10
4.88
11
0
12
1.65
13
0.55
14
0.89
15
0
16
5.9
IC201_WM8738
1
3.3
2
1.66
3
1.64
4
3.18
5
2.16
6
2.14
7
2.15
8
2.15
9
4.3
10
AGND
11
DGND
12
1.63
13
1.37
14
AGND
IC401_IP9011
1
2.13
2
2.11
3
1.92
4
2.33
5
5.05
6
1.66
7
1.69
8
3.27
9
0.86
10
3.27
11
3.27
12
5.05
13
3.45
PIN NO.
TEST
VOLTAGE(V)
15
1.61
16
2.78
17
2.03
18
2.21
19
5.05
20
1.65
21
1.75
22
GND
23
1.66
24
0.92
25
3.26
26
3.21
27
3.36
28
3.46
29
GND
30
GND
IC501 LM1117-1V5
1
GND
2
1.48
3
3.28
IC502 IC M12L128168A-6T
1
3.28
3
3.28
9
3.28
14
3.28
27
3.28
43
3.28
49
3.28
IC503 W25Q16
8
3.29
IC504 FT24C021CS
8
3.29
IC604_PS9831
1
GND
2
PLL GND
3
1.92
4
3.21
5
GND
6
1.92
7
GND
8
PLL GND
9
GND
10
3.21
11
GND
PIN NO.
TEST
VOLTAGE(V)
13
1.92
14
GND
15
GND
16
GND
17
GND
18
GND
19
1.58
20
1.58
21
GND
22
3.21
23
1.29
24
NC
25
NC
26
1.59
27
0.38
28
GND
29
3.21
30
NC
31
NC
32
NC
33
NC
34
1.92
35
GND
36
NC
37
NC
38
GND
39
3.21
40
1.58
41
1.58
42
1.92
43
GND
44
GND
45
1.58
46
1.58
47
3.21
48
1.58
49
1.58
50
GND
51
1.58
52
1.58
53
GND
54
NC
55
NC
56
3.21
PIN NO.
TEST
VOLTAGE(V)
58
NC
59
NC
60
GND
61
NC
62
NC
63
GND
64
GND
65
3.21
66
1.92
67
1.58
68
1.58
69
GND
70
1.59
71
1.59
72
3.21
73
GND
74
1.59
75
1.59
76
3.14
77
NC
78
4.83
79
4.83
80
1.92
81
GND
82
GND
83
GND
84
GND
85
GND
86
1.61
87
1.65
88
1.57
89
1.59
90
1.17
91
1.92
92
GND
93
1.47
94
3.21
95
GND
96
4.85
97
GND
98
GND
99
GND
100
GND
IC700_TAS5342A
PIN NO.
TEST
VOLTAGE(V)
2
3.15
3N
C
4N
C
5
3.15
6
1.58
7
4.85
8
1.58
9
1.07
10
GND
11
GND
12
3.21
13
GND
14
GND
15
GND
16
1.58
17
4.85
18
1.58
19
NC
20
NC
21
12.04
22
11.95
23
11.06
24
28.4
25
NC
26
34.9
27
34.9
28
28.4
29
GND
30
GND
31
17.3
32
34.9
33
28.3
34
28.3
35
34.9
36
17.3
37
GND
38
GND
39
17.3
40
34.9
41
34.9
42
NC
43
11.9
44
11.4
IC701_TAS5342A

3-43
3-44
PIN NO.
TEST
VOLTAGE(V)
2
3.15
3N
C
4N
C
5
3.15
6
1.58
7
4.85
8
1.58
9
1.12
10
GND
11
GND
12
3.21
13
GND
14
GND
15
GND
16
1.58
17
4.85
18
1.58
19
NC
20
NC
21
12.04
22
11.95
23
11.06
24
28.4
25
NC
26
34.9
27
34.9
28
28.4
29
GND
30
GND
31
17.3
32
34.9
33
28.3
34
28.3
IC801_D4558
1
0.01
2
0.01
3
0.01
4
-12.3
5
0.01
6
0.01
7
0.01
8
11.79
U202_BA3126
10
PIN NO.
TEST
VOLTAGE(V)
3
0.01
4
0.38
5
GND
6
6.51
7
0.01
8
GND
9
0.01
U203_BA3308
1
1.58
2
6.30mV
3
1.56
4
GND
5
3.25
6
7.12
7
1.56
8
6.30mV
9
1.58
U901_PT6324
1
4.77
2
4.14
3
4.37
4
1.14
50
60
7
2.81
8
GND
9
4.91
10
-17.7
11
-21.3
12
-23
13
-23
14
17.6
15
-21.9
16
-21.6
17
-24.7
18
-23
19
-24.7
20
-19.5
21
-23
22
-23
23
-24.7
24
-26.7
25
-26.7
26
-17.6
PIN NO.
TEST
VOLTAGE(V)
28
NC
29
NC
30
NC
31
NC
32
NC
33
-25.1
34
-25.1
35
-25.1
36
-25.1
37
-25.1
38
-25.1
39
-25.1
40
-25.1
41
-25.1
42
-25.1
43
-25.1
44
-25.1
45
-25.1
46
-25.1
47
-25.1
48
-25.1
49
NC
50
-26.9
51
4.9
52
GND
MEMO

3-45
3-46
PRINTED CIRCUIT BOARD DIAGRAMS
1. MAIN P.C.BOARD
(TOP VIEW)

3-47
3-48
MAIN P.C.BOARD
(BOTTOM VIEW)

3-49
3-50
2. SMPS P.C.BOARD
NOTE) Warning
Parts that are critical with respect to risk
of fire or electrical shock.

3. FRONT P.C.BOARD
3-51
3-52