lg_fb163_sb.pdf

LG FA163 - Po włączeniu uruchamia się, w głośniku świst i przechodzi w StandBy

Mini wieża LG jak w temacie, Sprawdzona płytka zasilająca wszystkie napięcia prawidłowe dla wszystkich złączy. Przy włączeniu wieży utrzymują się nie spadają. W głośniku słychać za każdym razem taki świst zaczynający się od wysokich do niskich częstotliwości, pokazane na filmie. Podejrzewam że to wzmacniacz, na wyjściu głośników tylny panel brak stałego napięcia, Czy skupić się na sekcji wzmacniania audio, czy przypadłości szukać w innych podzespołach, będę wdzięczny za wskazówki. 816669 Czy jest możliwość diagnostyki z którego elementu wysyłany jest sygnał ochrony/protect? 816659


Internal Use Only
Website http://biz.lgservice.com
SERVICE MANUAL
MODEL : FB163(FBS163V)

P/NO : AFN52679812

JANUARY, 2008

MINI HOME THEATER
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE UNIT, READ THE "SAFETY PRECAUTIONS" IN THIS MANUAL.

MODEL : FB163(FBS163V)

[CONTENTS]
? SECTION 1. GENERAL
o
o
o
o
o

SERVICING PRECAUTIONS . . . . . . . . . . . . . . . .
ESD PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . .
THE STEPS FOR CHANGE THE OPTION CODE
LOCATION OF USERS CONTROLS . . . . . . . . . .
SPECIFICATION . . . . . . . . . . . . . . . . . . . . . . . . .

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1-2
1-4
1-5
1-6
1-8

? SECTION 2. EXPLODED VIEWS
o CABINET AND MAIN FRAME SECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
o DECK MECHANISM EXPLODED VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-3
o SPEAKER EXPLODED VIEW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
o PACKING ACCESSORY VIEW . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-6
? SECTION 3. ELECTRICAL PART
o INTERNAL BLOCK DIAGRAM OF ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
o AUDIO ELECTICAL PART. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-21
o DVD ELECTICAL PART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-31
o WAVEFORMS OF MAJOR CHECK POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-39
o WIRING DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-45
o BLOCK DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
o SCHEMATIC DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-47
o PRINTED CIRCUIT BOARD DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-71

? SECTION 4. REPLACEMENT PARTS LIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-1

LGE Internal Use Only

SECTION 1. GENERAL
SERVICING PRECAUTIONS
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 this.

6) Never attempt to disassemble the pick-up.
Spring by 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.
LGE Internal Use Only

1-2

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

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 of humidity is high, where strong magnetism 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 (1MOhm)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static 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.

CLEARING MALFUNCTION
You can reset your unit to initial status if malfunction occur(button malfunction, display, etc.).
Using a pointed good conductor(such as driver), simply short the RESET jump wire on the inside of
the volume knob for more than 3 seconds.
If you reset your unit, you must reenter all its settings(stations, clock, timer)
NOTE: 1. To operate the RESET jump wire, pull the volume rotary knob and release it.
2. If you wish to operate the RESET jump wire, it is necessary to unplug the power cord.

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-3

LGE Internal Use Only

ESD PRECAUTIONS
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.

LGE Internal Use Only

1-4

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

THE STEPS FOR CHANGE THE OPTION CODE
AUDIO MICOM OPTION
POWER ON

LED
NAME

Remote control '2' + Front 'STOP'
push same timing during 5s

HEX

OPT 0

00

Use arrow key (
) to
move to appropriate position and
make changes

Press pause key once

Remote control '2' + Front 'STOP'
push same timing during 5s

Auto power off

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-5

LGE Internal Use Only

LOCATION OF USERS CONTROLS
FRONT / BACK PANEL

o FUNC.
To select the Functions press
FUNC..
(DVD/CD?USB?OSD IPOD
(Optional)?IPOD(Optional)
?PORTABLE?FM?AM )..
o XDSS Plus (MP3 Optimizer)
Reinforce the treble, bass and
surround effect, XDSS ON will
show in the display, press again for
ORMAL.
o

iPod DOCKING (Optional)
o USB Rec.
USB DIRECT RECORDING
o ? EJECT
Ejects or inserts the CD from the slot
loader.
o CD slot loader
- Do not push a disc forcibly.
- Do not pull or push a disc while a
disc is eject.
- Press ? again to reinsert the disc
after ejecting it .

(STANDBY/ON)
Turn on or off

o ?? or ?? AUTO TUNING TUNER / (|?? or ??|) SKIP-CD
buttons
o ? / ? (PLAY/PAUSE)
o VI STOP button
o VOLUME Adjustment
Moves your finger to inside of touch
wheel.

o TIMER
(see Use your player as a desired
time.)
o CLOCK
For setting the clock and checking
the time.
(see setting the clock)
o VSM(VIRTUAL SOUND MATRIX )
/ DEMO Press DEMO in power off
state to demonstrate the function
on display window.
To cancel it, press
or DEMO
again.
o SET confirms the time you have
selected when setting the clock.
- RDS (OPTIONAL) shows information about radio stations. (see
listening to the radio)

o MIC1/MIC2 Connect the microphone.
( 6.3 mm) - Optional
o PORT. IN. For connecting a portable
device and playing it through the
system's speaker.
o Headphone jack
Connect a headphone plug ( 3.5
mm) into the jack to listen to the
sound through headphones
(not supplied).

o USB connector
Connect a remote USB compatible
player here.

LGE Internal Use Only

1-6

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

REMOTE CONTROL

POWER
MUTE
FUNCTION
INPUT
SLEEP
RETURN (
)
EQ (EQUALIZER Effect)
VSM
ECHO VOL. ( ? / ? )
MIC VOL. ( ? / ? )
SETUP
MENU
DISPLAY
TITLE
SELECT/ENTER
PRESET(-/+)( ? / ? )
TUN.(-/+)( ? / ? )
PLAY ( ? )
STOP ( VI )
PAUSE/STEP ( ? )
REC ( viii )
PROG./MEMO.
VOLUME (+/-)
REPEAT
CLEAR
S-TITLE
VOCAL FADER
RDS(optional)
PTY(optional)

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1-7

LGE Internal Use Only

SPECIFICATIONS
General
Power supply
Power consumption
Net Weight
External dimensions (W x H x D)

Refer to main label.
Refer to main label.
3.31 kg
170 x 253 x 265 mm

Tuner
FM Tuning Range
Intermediate Frequency
AM Tuning Range
Intermediate Frequency

87.5 - 108.0 MHz or 65.0 - 74.0 MHz, 87.5 - 108.0 MHz
10.7 MHz
522 - 1,620 kHz or 520 - 1,720 kHz
450 kHz

Amplifier
OUTPUT POWER
Stereo Mode
Frequency Response
Signal-to-noise ratio

80 W + 80 W(4Ohm,THD 0.5%)
80 W + 80 W(4Ohm,THD 0.5%)
40 - 20000Hz
75dB

DVD/ VCD/ CD player
Frequency response (audio)
Signal- to- noise ratio (audio)
Signal- to- noise ratio (video)
Dynamic range (audio)
Video output
Component Video output

40 - 20000 Hz
More than 75dB (1 kHz)
More than 55dB (1 kHz)
More than 80dB
1.0V (p-p), 75Ohm
(Y) 1.0V (p-p), 75Ohm
(Pb)/( Pr) 0.7V (p-p), 75Ohm

Speakers
FBS163V
Type 3 Way 3 Speaker
Impedance
Rated Input Power
Max. Input Power
Net Dimensions
(W x H x D)
Net Weight

4Ohm
80 W
160W
132 x 286 x 253 mm
4.3kg

Designs and specifications are subject to change without pior notice.

LGE Internal Use Only

1-8

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

SECTION 2. EXPLODED VIEWS
o CABINET AND MAIN FRAME SECTION

NOTES) THE EXCLAMATION POINT WITHIN AN

255
463

EQUILATERAL TRIANGLE IS INTENDED
TO ALERT THE SERVICE PERSONNEL
TO THE PRESENCE OF IMPORTANT
SAFETY INFORMATION IN SERVICE
LITERATURE.

463

253

OPTIONAL PART

262

463

455

264

254

273

252

463

CABLE3

468

9701

A46
C

J

463

452

SMPS

463

A43
463

B

463

261

259

A47

A26
A

A46

251
CABLE1

276

CABLE2

I
E

265
263

F

FRONT

H

G

250

463
463

CN101

D

275

I
B

A

MAIN

463

272

463
F
E

463

K
D
H

A46

G

452

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2-1

305

2-2

A44
274

LGE Internal Use Only

o DECK MECHANISM EXPLODED VIEW

A26

001

007

017

008
010

004

007

002
011
009
003
012

013
014

432
030

005

033

024

016
032

025
031

431

036

024

435

025

015

024
A30

025

006

025

LGE Internal Use Only

021

024
035

035A

2-3

2-4

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

SPEAKER EXPLODED VIEW
o FRONT SPEAKER

A80
A81
A80L
A80R

A80A

856
855

854
853

859

857
861

860
851

862

854

852
864

850
863

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2-5

LGE Internal Use Only

o PACKING ACCESSORY VIEW

808 Battery

824 Antenna Loop

811 Plug Ass'y, 1Way(BLACK)

825 Antenna

801 Instruction Ass'y

900 Remote controller

803 Packing
804 Bag

802 Box

LGE Internal Use Only

2-6

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

SECTION 3. ELECTRICAL PART
INTERNAL BLOCK DIAGRAM OF ICs
1. CS5345_DATASHEET

TSTI

NC

NC

NC

SDOUT

SCLK

LRCK

MCLK

DGND

VD

INT

OVFL

o PIN CONFIGURATION

48 47 46 45 44 43 42 41 40 39 38 37
SDA/CDOUT

1

36

VLS

SCL/CCLK

2

35

TSTO

AD0/CS

3

34

NC

AD1/CDIN

4

33

NC

VLC

5

32

AGND

RESET

6

31

AGND

AIN3A

7

30

VA

AIN3B

8

29

PGAOUTB

AIN2A

9

28

PGAOUTA

AIN2B

10

27

AIN6B

AIN1A

11

26

AIN6A

AIN1B

12

25

MICBIAS

CS5345

AIN5B

AIN5A

AIN4B/MICIN2

TSTO

AIN4A/MICIN1

o PIN DESCRIPTION

FILT+

VQ

TSTO

AFILTB

VA

AFILTA

1. CS5345_DATASHEET

AGND

13 14 15 16 17 18 19 20 21 22 23 24

Pin Name

#

Pin Description

SDA/CDOUT

1

AE
Serial Control Data (Input/Output) - SDA is a data I/O in I<=C Mode. CDOUT is the output data line for
TM Mode.
the control port interface in SPI

SCL/CCLK

2

Serial Control Port Clock (Input) - Serial clock for the serial control port.

AD0/CS

3

Address Bit 0 (I<=C) / Control Port Chip Select (SPI) (Input) - AD0 is a chip address pin in I<=C Mode
;
CS is the chip-select signal for SPI format.

AD1/CDIN

4

Address Bit 1 (I<=C) / Ser Control Data Input (SPI) (Input) - AD1 is a chip address pin in I<=C Mod
ial
e;
CDIN is the input data line for the control port interface in SPI Mode.

VLC

5

Control Port Power (Input) - Determines the required signal level for the control port interface. Refer
to the Recommended Operating Conditions for appropriate voltages.

RESET

6

Reset (Input) - The device enters a low-power mode when this pin is driven low.

AIN3A
AIN3B

7
8

Stereo Analog Input 3 (Input) - The full-scale level is specified in the ADC Analog Characteristics
specification table.

AIN2A
AIN2B

9
10

Stereo Analog Input 2 (Input) - The full-scale level is specified in the ADC Analog Characteristics
specification table.

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-1

LGE Internal Use Only

AIN1A
AIN1B

11
12

Stereo Analog Input 1 (Input) - The full-scale level is specified in the ADC Analog Characteristics
specification table.

AGND

13

Analog Ground (Input) - Ground reference for the internal analog section.

VA

14

Analog Power (Input) - Positive power for the internal analog section.

AFILTA

15

Antialias Filter Connection (Output) - Antialias filter connection for the channel A ADC input.

AFILTB

16

Antialias Filter Connection (Output) - Antialias filter connection for the channel B ADC input.

VQ

17

Quiescent Voltage (Output) - Filter connection for the internal quiescent reference voltage.

TSTO

18

Test Pin (Output) - This pin must be left unconnected.

FILT+

19

Positive Voltage Reference (Output) - Positive reference voltage for the internal sampling circuits.

TSTO

20

Test Pin - This pin must be left unconnected.

AIN4A/MICIN1
AIN4B/MICIN2

21
22

Stereo Analog Input 4 / Microphone Input 1 &amp; 2 (Input) - The full-scale level is specified in the ADC
Analog Characteristics specification table.

AIN5A
AIN5B

23
24

Stereo Analog Input 5 (Input) - The full-scale level is specified in the ADC Analog Characteristics
specification table.

MICBIAS

25

Microphone Bias Supply (Output) - Low-noise bias supply for external microphone. Electrical characteristics are specified in the DC Electrical Characteristics specification table.

AIN6A
AIN6B

26
27

Stereo Analog Input 6 (Input) - The full-scale level is specified in the ADC Analog Characteristics
specification table.

PGAOUTA
PGAOUTB

28
29

PGA Analog Audio Output (Output) - Either an analog output from the PGA block or high impedance.
See ?PGAOut Source Select (Bit 6)î on page 33.

VA

30

Analog Power (Input) - Positive power for the internal analog section.

AGND

31
32

Analog Ground (Input) - Ground reference for the internal analog section.

NC

33
34

No Connect - These pins are not connected internally and should be tied to ground to minimize any
potential coupling effects.

TSTO

35

Test Pin (Output) - This pin must be left unconnected.

VLS

36

Serial Audio Interface Power (Input) - Determines the required signal level for the serial audio interface. Refer to the Recommended Operating Conditions for appropriate voltages.

TSTI

37

Test Pin (Input) - This pin must be connected to ground.

NC

38,
39,
40

No Connect - These pins are not connected internally and should be tied to ground to minimize any
potential coupling effects.

SDOUT

41

Serial Audio Data Output (Output) - Output for twoís complement serial audio data.

SCLK

42

Serial Clock (Input/Output) - Serial clock for the serial audio interface.

LRCK

43

Left Right Clock (Input/Output) - Determines which channel, Left or Right, is currently active on the
serial audio data line.

MCLK

44

Master Clock (Input/Output) - Clock source for the ADCís delta-sigma modulators.

DGND

45

Digital Ground (Input) - Ground reference for the internal digital section.

VD

46

Digital Power (Input) - Positive power for the internal digital section.

INT

47

Interrupt (Output) - Indicates an interrupt condition has occurred.

OVFL

48

Overflow (Output) - Indicates an ADC overflow condition is present.

LGE Internal Use Only

3-2

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

1. CS5345_DATASHEET
o TYPICAL CONNECTION DIAGRAM
+3.3V to +5V
10 F

+3.3V to +5V

0.1 F

0.1 F

VD

VA

0.1 F

10 F

VA
3.3 F

+1.8V
to +5V

0.1 F

PGAOUTA

VLS

3.3 F

PGAOUTB

MCLK
SCLK

Digital Audio
Capture

AIN1A
1800 pF *

LRCK
SDOUT
AIN1B
INT

1800 pF

*

AIN2A

OVFL

1800 pF *

Left Analog Input 1

10 F 100

100

10 F

100

100

Right Analog Input 1
Left Analog Input 2

10 F 100

100

10 F

100

RESET
MicroController

SCL/CCLK

AIN2B

1800 pF

*

100

Right Analog Input 2

SDA/CDOUT
AIN3A

AD1/CDIN

1800 pF *

AD0/CS
2k

AIN3B

2k

See Note 1

+1.8V
to +5V

VLC

1800 pF *

AIN4B/MICIN2

1800 pF

*

AIN5A

NC
NC
NC
NC
NC

Note 2 The value of RL is
dictated by the microphone
carteridge.

*

AIN4A/MICIN1

0.1 F

Note 1: Resistors are required
for I<=C control port operation

1800 pF

1800 pF *

AIN5B

1800 pF

*

AIN6A

TSTI
TSTO
TSTO
TSTO

1800 pF *

AIN6B

1800 pF

*

10 F

0.1 F

47 F

AGND
AGND

0.1 F

AFILTA
AFILTB

AGND
DGND

100

10 F

100

100

Right Analog Input 3
Left Analog Input 4

10 F 100

100

10 F

100

100

Right Analog Input 4
Left Analog Input 5

10 F 100

100

10 F

100

100

Right Analog Input 5
Left Analog Input 6

10 F 100

100

10 F

100

100

Right Analog Input 6

See Note 2

MICBIAS
VQ
FILT+

Left Analog Input 3

10 F 100

47 F
*

RL

*
2.2nF 2.2nF

* Capacitors must be C0G or equivalent

RL

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-3

LGE Internal Use Only

2. CY8C21434

P0[1]
P2[7]
P2[5]
P2[3]
P2[1]
P3[3]
P3[1]
P1[7]

1
2
3
4
5
6
7
8

I, M

P0[4], A, I, M
P0[2], A, I, M

QFN
(Top View )

24
23
22
21
20
19
18
17

P0[0],
P2[6],
P2[4],
P2[2],
P2[0],
P3[2],
P3[0],
XRES

A , I, M
M
M
M
M
M
M

M, I2C SDA, P1[0]
M, P1[2]
M, EXTCLK, P1[4]
M, P1[6]

M, I2C SCL, P1[1]
Vss

M, I2C SDA, P1[5]
M, P1[3]

9
10
11
12
13
14
15
16

A , I, M,
M,
M,
M,
M,
M,
M,
M, I2C SCL,

32
31
30
29
28
27
26
25

Vss
P0[3], A,
P0[5], A,
P0[7], A,
Vdd
P0[6], A,

I, M
I, M
I, M

o PIN CONFIGURATION

o PIN DESCRIPTION
Pin No.

Type

1
2
3
4
5
6
6

Digital
IO
IO
IO
IO
IO
IO
Power

Analog
I, M
M
M
M
M
M
SMP

7
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32

IO
Power
IO
IO
IO
IO
Power
IO
IO
IO
IO
Input
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
Power
IO
IO
IO
Power

M

LGE Internal Use Only

M
M
M
M
M
M
M
M
M
M
M
M
M
M
I, M
I, M
I, M
I, M
I, M
I, M
I, M

SYMBOL
P0[1]
P2[7]
P2[5]
P2[3]
P2[1]
P3[3]

P3[1]
Vss
P1[7]
P1[5]
P1[3]
P1[1]
Vss
P1[0]
P1[2]
P1[4]
P1[6]
XRES
P3[0]
P3[2]
P2[0]
P2[2]
P2[4]
P2[6]
P0[0]
P0[2]
P0[4]
P0[6]
Vdd
P0[7]
P0[5]
P0[3]
Vss

Description
Analog column mux input, integrating input.

In CY8C21434 part.
Switch Mode Pump (SMP) connection to required external
components in CY8C21634 part.
In CY8C21434 part.
Ground connection in CY8C21634 part.
I2C Serial Clock (SCL).
I2C Serial Data (SDA).
I2C Serial Clock (SCL), ISSP-SCLK*.
Ground connection.
I2C Serial Data (SDA), ISSP-SDATA*.
Optional External Clock Input (EXTCLK).
Active high external reset with internal pull down.

Analog column mux
Analog column mux
Analog column mux
Analog column mux
Supply voltage.
Analog column mux
Analog column mux
Analog column mux
Ground connection.

3-4

input.
input.
input.
input.
input.
input.
input, integrating input.

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3. DS8391+8390
o SYSTEM BIOCK DIAGRAM
DVD/CD
Motor
OPU

Motor Driver
Video
Audio

SDRAM
(8/16-MB)

EEPROM

TV Display
Speakers

Audio

ES8391
Phoenix II

ROM/Flash

S/PDIF

VFD Driver

Microphone In
A/V Receiver
VFD Panel
IR Remote
Flash Memory Cards / HDD

4. IP9010
o BIOCK DIAGRAM

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-5

LGE Internal Use Only

1. CS5345_DATASHEET
o PIN CONNECTIONS

1. CS5345_DATASHEET
o PIN DESCRIPTION
NO SYMBOL

I /O

DESCRI PTI ON

NO SYMBOL

I /O

DESCRI PTI ON

1

DO1-

O

CH1 driver output(-)

15

DO4-

O

CH4 driver output(-)

2

DO1+

O

CH1 driver output(+)

16

DO4+

O

CH4 driver output(+)

3

DO2-

O

CH2 driver output(-)

17

DO5-

O

CH5 driver output(-)

4

DO2+

O

CH2 driver output(+)

18

DO5+

O

CH5 driver output(+)

5

VCC1

-

Power supply voltage 1

19

VCC2

-

Power supply voltage 2

6

IN2

I

CH2 input

20

IN5

I

CH5 input

7

IN1

I

CH1 input

21

IN4

I

CH4 input

8

MUTE

I

Mute

22

GND

-

Ground

9

CTL3

I

Loading motor speed control

23

BIAS

I

Bias

10

REV3

I

Loading motor reverse input

24

VDET

I

Reset detection

11

FWD3

I

Loading motor forward input

25

RESET

O

Reset output

12

SVCC

-

Signal supply voltage

26

FB

I

Adjustable regulator feed back

13

DO3+

O

CH3 driver output(+)

27

REGVCC

O

Regulator supply voltage

14

DO3-

O

CH3 driver output(-)

28

REO

-

Adjustable regulator output

LGE Internal Use Only

3-6

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

5. LC87F5NC8AVU-QIP
o PIN CONFIGURATION

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-7

LGE Internal Use Only

5. LC87F5NC8AVU-QIP
o SYSTEM BIOCK DIAGRAM

LGE Internal Use Only

3-8

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

5. LC87F5NC8AVU-QIP
o PIN DESCRIPTION

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-9

LGE Internal Use Only

LGE Internal Use Only

3-10

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

6. MC4580
o PIN CONFIGURATION

OUT1

1

8

Vcc+

IN1(-)

2

7

OUT2

IN1(+)

3

6

IN2(-)

Vcc-

4

5

IN2(+)

oTEST CIRCUIT
Vcc+

IN(-)

OUTPUT

IN(+)

Vcc-

o ABSOLUTE MAXIMUM RATINGS (TA=25 °C)
PARAMETER

SYMBOL

RATINGS

UNIT

Supply Voltage
Input Voltage
Differential Input Voltage
Output Current
Power Dissipation

V+/VVIC
VID
Io
PD

V
V

Operating Temperature Range
Storage Temperature Range

Topr
Tstg

?18
?5
?30
?50
300 (SOP-8)
800 (DIP-8)
250(TSSOP-8)
-40 to+85
-40 to +125

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-11

V
m

A
mW

° C
°C

LGE Internal Use Only

7. 0IRH330800A
o SYSTEM BIOCK DIAGRAM

oTEST CIRCUIT

LGE Internal Use Only

3-12

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

6. MC4580
o TEST CIRCUIT SWITCH POSITION

8. PS9830B
o FUNCTIONAL BIOCK DIAGRAM

Serial
Audio
Output
interface

Down
Mixer

Automatic
Gain
Limiter

Input
Mapper

Trim
Volume

Main
Volume

PWM3_P/M
PWM4_P/M
PWM5_P/M
PWM6_P/M
PWM7_P/M

PWM
Modulator
Internal Clock

Internal Reset

PWM8_P/M
PWM_HP_L_P/M
PWM_HP_R_P/M

Reset &amp; Power Down

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

POP
NR

3-13

EPD_ENA
OVERLOAD

IO_VSS

DVSS

IO_VDD

Power Supply

PLL

DVDD

Crystal
Oscillator

PWM_SWL_P/M

PLL_AVSS

Internal Controls

XI N

Host
Interface
(I2C, SPI)

XOUT

EXT_MUTE

Bass
Manager

DMIX_SDOUT

PWM1_P/M

Mic.
Input
Processor

SPI/I2C
SO/SDA
SCK/SCL
SI/I2C_AD0
/CS/I2C_AD2

EQ

PLL_DVSS

MIC_BCK
MIC_LRCK
MIC_SDIN

Mixer

/RESET

MIC_MCLK

DMIX_MCLK
OLRCK
OBCK

PWM2_P/M

Output Mapper

Sample
Rate
Converter

Serial Audio
Output
interface

PLL_AVDD

SBCK
SLRCK
SSDIN[0:3]

Input
&amp;
Output
MUX

PLL_DVDD

MBCK
MLRCK
MSDIN[0:3]

LGE Internal Use Only

PWM3_M

IO_VSS

PWM2_P

PWM2_M

53

52

51

PWM3_P

54

PWM4_M
58

55

PWM4_P
59

IO_VSS

IO_VSS
60

IO_VDD

PWM5_M
61

56

PWM5_P
62

57

IO_VSS

DVSS
63

PWM6_P
68

IO_VDD

IO_VSS
69

64

PWM7_M
70

65

PWM7_P
71

PWM6_M

IO_VDD
72

DVDD

IO_VSS
73

66

PWM8_M
74

67

PWM8_P
75

o PIN CONFIGURATION

OVERLOAD

76

50

IO_VSS

EPD_ENA

77

49

PWM1_P

SO/SDA

78

48

PWM1_M

SCK/SCL

79

47

IO_VDD

DVDD

80

46

PWM_HP_L_P

DVSS

81

45

PWM_HP_L_M

SI/I2C_AD0

82

44

IO_VSS

/CS/I2C_AD2

83

43

DVSS

SPI/I2C

84

42

DVDD

IO_VSS

85

41

PWM_HP_R_P

XIN

86

40

PWM_HP_R_M

XOUT

87

39

IO_VDD

38

IO_VSS

37

PWM_SWL_P

36

PWM_SWL_M

DMIX_LRCK
DMIX_BCK

89

DMIX_SDOUT

90

DVDD

91

DVSS

PULSUS

88

PS9830B

15

16

17

18

19

20

21

22

23

24

25

MSDIN1

MSDIN2

MSDIN3

SBCK

SLRCK

IO_VSS

IO_VDD

SSDIN0

SSDIN1

SSDIN2

DVDD

1
IO_VSS

LGE Internal Use Only

14

SSDIN3

DVSS

26

MSDIN0

EXT_MUTE

100

TEST_MODE3

13

27
12

99

11

IO_VSS

SCAN_ENA

MBCK

28

MLRCK

98

10

IO_VDD

TEST_MODE2

IO_VDD

29

9

97

IO_VSS

MIC_MCLK

TEST_MODE1

8

30

PLL_AVSS

96

7

MIC_BCK

/RESET

IO_VSS

31

6

95

5

MIC_LRCK

IO_VSS

IO_VSS

MIC_SDIN

32

PLL_AVDD

33

94

4

93

IO_VDD

IO_VDD

DMIX_MCLK

3

DVDD

PLL_DVDD

34

2

DVSS

92

PLL_DVSS

35

3-14

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

9. PT6324
o BIOCK DIAGRAM

Con tro l
DIN/DOUT
CLK

Ser ial
Data
Inter face

STB

OS C

Displa y Memor y

Ti ming Ge nera to r
Se gment Driver

Ke y Matrix Memory

LE D1

LED
Drive r

Dimming Cir cu it
Gr id
Drive r

K1

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

K2

VDD

3-15

GND

SG 1/KS1
SG 2/KS2
SG 3/KS3
SG 4/KS4
SG 5/KS5
SG 6/KS6
SG 7/KS7
SG 8/KS8
SG 9/KS9
SG 10/KS 10
SG 11 /K S11
SG 12/KS 12
SG 13/KS 13
SG 14/KS 14
SG 15/KS 15
SG 16/KS 16
SG 17
SG 18
SG 19
SG 20
SG 21
SG 22
SG 23
SG 24

GR1
GR2
GR3
GR4
GR5
GR6
GR7
GR8
GR9
GR1 0
GR11
GR1 2
GR1 3
GR1 4
GR1 5
GR1 6

VE E

LGE Internal Use Only

9. PT6324

GR10

GR9

GR8

GR7

GR6

GR5

GR4

GR3

GR2

GR1

VEE

VDD

GND

o PIN CONFIGURATION

5 2 51 50 49 48 47 46 4 5 44 4 3 42 4 1 4 0
1

39

GR11

DIN/DOUT

2

38

GR12

STB

3

37

GR13

LED1

4

36

GR14

K1

5

35

GR15

K2

6

34

GR16

OSC

7

33

SG24

G ND

8

32

SG23

VDD

9

31

SG22

SG1/KS1

10

30

SG21

SG2/KS2

11

29

SG20

SG 3KS3

12

28

SG19

SG4/KS4

13

27
1 4 15 16 17 18 19 20 2 1 22 2 3 24 2 5 2 6

SG18

LGE Internal Use Only

3-16

SG16/KS16

SG15/KS15

SG14/KS14

SG13/KS13

SG12/KS12

SG11/KS11

SG10/KS10

SG9/KS9

SG8/KS8

SG7/KS7

SG6/KS6

SG5/KS5

PT6324

SG 17

CLK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

9. PT6324
o PIN DESCRIPTION
Pin Name

I/O

CLK

I

DIN/DOUT

I/O

STB

I

LED1

O

K1 to K2

I

OSC

I

GND
VDD
SG1/KS1 to
SG16/KS16
SG17 to SG24
GR1 to GR16
VEE

O
O
O
-

Description
Clock Input Pin
This pin reads serial data at the rising edge and outputs data at
the falling edge.
Data Input Pin/Data Output pin (N-Channel, Open-Drain)
When this pin acts as input pin, serial data is inputted at the
rising edge of the shift clock (starting from the lower bit)
When this pin acts as output pin, serial data is outputted at the
falling edge of the shift clock (starting from the lower bit)
Serial Interface Strobe Pin
The data input after the STB has fallen is processed as a
command. When this in is ?HIGHî, CLK is ignored.
LED Output Pin
Key Data Input Pins
The data inputted to these pins is latched at the end of the
display cycle.
Oscillator Input Pin
A resistor is connected to this pin to determine the oscillation
frequency.
Ground Pin
Logic Power Supply
High-Voltage Segment Output Pins
Also acts as the key source
High-Voltage Segment Output Pins
High-Voltage Grid Output Pins
Pull-Down Level

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-17

Pin No.
1

2

3
4
5, 6

7
8, 52
9, 51
10 to 25
26 to 33
34 to 49
50

LGE Internal Use Only

10. TAS5342
o TYPICAL SYSTEM BLOCK DIAGRAM

OTW
System
Microcontroller

SD

TAS5518

OTW

SD

BST_A
BST_B

RESET_AB
RESET_CD

VALID

PWM_A
LeftChannel
Output

OUT_A
Output
H-Bridge 1

Input
H-Bridge 1

PWM_B

OUT_B

Bootstrap
Capacitors

2nd-Order L-C
Output Filter
for Each
Half-Bridge

2-Channel
H-Bridge
BTL Mode
OUT_C

PWM_C

4

35.5 V

PVDD

System
Power
Supply
GND

12 V

4

PVDD
Power
Supply
Decoupling

2nd-Order L-C
Output Filter
for Each
Half-Bridge

OC_ADJ

AGND

VDD

BST_C

VREG

GVDD_A, B, C, D

M3

OUT_D

GND

M2

GND_A, B, C, D

M1
Hardwire
Mode
Control

Output
H-Bridge 2

Input
H-Bridge 2

PWM_D

PVDD_A, B, C, D

RightChannel
Output

BST_D

Bootstrap
Capacitors

4

GVDD
VDD
VREG
Power Supply
Decoupling

Hardwire
OC Limit

GND

GVDD (12 V)/VDD (12 V)

VAC
B0047-02

LGE Internal Use Only

3-18

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

9. PT6324
o FUNCTIONAL BLOCK DIAGRAM

VDD

4
Undervoltage
Protection

OTW
Internal Pullup
Resistors to VREG

SD

4
VREG

VREG

Power
On
Reset

Protection
and
I/O Logic

M2
M3

AGND

Temp.
Sense

M1

GND

RESET_AB
Overload
Protection

RESET_CD

OC_ADJ

Isense

GVDD_D
BST_D
PVDD_D
PWM_D

PWM
Rcv.

Ctrl.

Timing

Gate
Drive

OUT_D
BTL/PBTLConfiguration
Pulldown Resistor

GND_D
GVDD_C
BST_C
PVDD_C
PWM_C

PWM
Rcv.

Ctrl.

Timing

Gate
Drive

OUT_C
BTL/PBTLConfiguration
Pulldown Resistor

GND_C
GVDD_B
BST_B
PVDD_B
PWM_B

PWM
Rcv.

Ctrl.

Timing

Gate
Drive

OUT_B
BTL/PBTLConfiguration
Pulldown Resistor

GND_B
GVDD_A
BST_A
PVDD_A
PWM_A

PWM
Rcv.

Ctrl.

Timing

Gate
Drive

OUT_A
BTL/PBTLConfiguration
Pulldown Resistor

GND_A
B0034-03

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-19

LGE Internal Use Only

LGE Internal Use Only

3-20

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

AUDIO ELECTRICAL TROUBLESHOOTING GUIDE
1. MICOM PART CHECK I
MICOM PART
HECK I
YES

Check
CN101 6PIN
P-SENS.

NO

Refer to SMPS
troubleshooting.

YES
Check
power of both
terminals of IC101
KIA7042
YES
Check IC100
LC87F5NC8A 4 PIN
power.
YES
OK

NO

Check if
IC101 KIA7042
input is over 5V.

NO

YES

Check the
related part of IC101
KIA7042.

NO

Replace the
related parts.

YES

Check if output voltage
of IC101 KIA7042 is
4.3V.
YES
OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-21

LGE Internal Use Only

2. MICOM PART CHECK II
MICOM PART CHECK II
YES
NO

Refer to SMPS
Troubleshooting.

NO

Check D101 RS1G
output is working on 5V.

Check CN101 5PIN 5.6V

YES
Check power
of both terminals of D101
RS1G.

YES

Check the related part

NO

Replace the related parts.

YES
OK
YES
Check Q10
EMITTER 5V and
COLLECTOR 5V

NO

Check Q102 BASE
PIN 0.6V HIGH

NO

Check output power of IC101
KIA7042 is over 4.3V.
YES

YES
Check IC103 8PIN IC100
14,55,89 PIN 5V

YES
Check Q102 COLLECTOR

Check the related part.

YES

YES
OK

YES
Check the working condition
X100:32.768kHz
X101:9.8304MHz
YES
OK

LGE Internal Use Only

Check the
related part.

NO

Replace the related parts.

YES
OK

3-22

Replace the related parts.

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

NO

3. IC103 S-24CS16A01 PART CHECK
CHECK IC100 LC87F5NC8A
81,82 PIN
YES

81 PIN DATA 82 PIN CLK

NO

NO

YES

Check MICOM power 5V

Refer to micom
troubleshooting.

YES

Check the related part.

NO

Replace the related parts.

YES
OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

OK

3-23

LGE Internal Use Only

4. FLD DISPLAY PART CHECK
FLD DISPLAY CHECK
YES
Check
CN101 1,2,3 power.

NO

Refer to SMPS
Troubleshooting

YES
F1+,F2-both terminals:over
3.7V Check power VKK:over
-28V.
Check P3101 assembly

YES
Check
P3101 connection
condition and power F1+,F2both terminals:over 3.7V
Check power VKK:over -28V
Check 4.5 PIN:5.6V

YES
NO

NO

Check
power of each PIN.

Replace the related part

YES
YES
Check
IC304 PT6324
power 50 PIN VKK:-28V
9.52 PIN +5V

OK
NO

When 5V fails,check D321SR35
input and output power.
YES
NO
Check the related part

Replace the related part.

YES
YES
IC100
Check?IC304
Data communication.
PIN
PIN
27PIN?3PIN STB
26PIN?2PIN DO
28PIN?1PIN CLK

YES

OK

NO

IC100 27 PIN?STB
28 PIN?1PIN CLK
Check Data output.
YES
Check 26 PIN?DO
?DATA input.
YES
NO

FLT light on?
YES
OK
LGE Internal Use Only

Check the related part

Replace the related part.

YES
OK
3-24

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

5. TOUCH-PAD PART CHECK
TOUCH-PAD CHECK
YES
IC3A1
28PIN check 5V.

NO

NO

PN3A2 1PIN 5V.

Refer to SMPS
Troubleshooting.

YES

YES

OK
Check
IC3A1 8Pin,9Pin,
IC100 97Pin :CLK,
96Pin :DATA

NO

Check resistance output of
line CLK :R316 DATA :R317

YES

NO
Replace the related part.

YES

OK

OK

6. PWM MODULATION PART CHECK
PWM MODULATION
PART CHECK
YES
Check
PN102 10PIN 3.3V.

NO

Refer to SMPS
Troubleshooting.

NO

Check the
related part of
X701.

YES
Check IC702 PS9830 VDD
PIN power (3,10,22,29,39,47,
56,65,72,87,94)Check X701
2PIN 3.3V
YES
Check if X701
12.288MHz is working.

YES

NO

Replace the related part.

YES
OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-25

LGE Internal Use Only

YES

Check IC702 PS9830
86 PIN CLK input

NO

Replace the related part.

Check R791(1M)output

YES

NO

YES
OK

Check
output of IC100
LC87F5NC8A
21?PWM_CLK
22?PWM_DATA
43?PWM_REST

NO

Check
resistance output of LINE
DATA:R797
CLK:R795
RST:R790

NO

Replace the related part.

YES
YES
OK

Check IC702
PS9830 DATA input
78 PIN?DATA
79 PIN?CLK
96 PIN?REST

NO

Check DVD
ASS`Y PS9830
communication condition
(P7403)

YES

NO

Refer to DVD Troubleshooting.

NO

Check resistance
output of each LINE.

YES
Check IC702
PS9830 DATA input.
YES
OK

Check
PWM MODULATOR
output
FL:75(+)74(-)
R:71(+)70(-)

NO

Check IC702 PS9830 part.

YES
OK

LGE Internal Use Only

3-26

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

7. PWM AMP PART CHECK
POWER AMP PART CHECK
YES
PN102
3PIN + 13,14,15 PIN 28V.

NO

Refer to SMPS Troubleshooting.

YES
Check input power IC700
34,29,26,21 PIN.
YES
Check input power of IC700,
1,36,17,18,19 PIN +12V

NO

Check resistance power
IC700:R702,701,726,727,724.

YES
Check PWM MODULATOR
input 4,6,14,16 PIN.
YES
Check POWER IC 700 34,
29,27,20 PIN output.
YES

Check output LINE COIL.

NO

Replace the related parts.

YES
OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-27

LGE Internal Use Only

8. TUNER FUNCTION PART CHECK
TUNER FUNCTION PART CHECK
YES
Check TUNER
module(TU100)is working.

NO

Check TUNER MODUEL
power(Check 4PIN 9V).

YES
Check IC201(CS5345)
26,27PIN input waveform.
YES
Check IC201(CS5345)
14PIN output waveform.

NO

Replace the related parts

YES
OK

LGE Internal Use Only

3-28

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

9. SMPS POWER CIRCUIT
MAIN PART
MAIN PART
YES

Check the FUSE
F901.

NO

Replace the fuse.

YES
Check
the DC V of C905
if DC V is over
400V.

NO

Check BD901,LF901,902.

YES
Check the
DC V of C909,C903,C921
If DC V is in 14~19V
And it is steady

NO
Check IC901,902.

NO

Replace IC901,902.

YES
YES
Check short of P9701,P9702 line.
Check the
DC V of C981,C945.
If DC V is 6.1V.

NO

Check short of P9702 line.

YES
Check the
DC V of C950,C951
If DC V is in
29V.

NO

Check short of P9701 line.

YES
OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-29

LGE Internal Use Only

P-SENS

VKK PART CHECK

P-SENS

VKK CHECK

YES

YES

Check
the PIN6 of P9702
if DC V is over
5.6V

NO

Check
the PIN3 of P9702
if DC V is over
-30V ?1.

Check power circuit
Troubleshooting.

YES

NO

Check power circuit
Troubleshooting.

YES

OK

OK

10. IPOD PART(ONLY NORTH AMERICA)
TURN ON IPOD
YES
LOADING

NO

Check the JK3C1 13pin, 30pin.
YES

YES

Check the JK3C1 13pin and 30pin line.
YES
OK

OSD IPOD

NO

Check the JK3C1 18pin, 19pin.
YES

YES

Check theJK3C1 18pin and 19pin line

OK

YES
OK
LGE Internal Use Only

3-30

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

DVD ELECTRICAL TROUBLESHOOTING GUIDE
1. POWER CHECK GUIDE
POWER ON
YES
Select the DVD Mode
YES
Does DVD
appear at FLD?

NO

Does it
appear DVD ERROR at
FLD?

NO

Check an Audio Micom

YES

YES

Check Connector
(P4405,P4407,P4408).
YES
Reconnect it.

Does No DISC or
Time are appeared at
FLD?

NO

YES

Check the voltage
of each pin on PN702.
YES
Check DVD MD Module.

OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-31

LGE Internal Use Only

2. TEST &amp; DEBUG FLOW
POWER ON
YES
NO
Show LOGO?

YES

NO

Flash Memory
operates properly?

Check connection lines between
FLASH &amp; ES8390 or the FLASH
access time whether is suitable or not.

YES
NO

SDRAM works
properly?

Check connection lines between
SDRAM.
(IC502) &amp; ES8390 or the SDRAM is
damaged.

YES
NO

ES8390 VIDEO
outputs properly?

Check the related circuit of
ES8390 (IC501)
PIN80,83,84,85

YES
Check AV cable connection
to TV set.

Does DISC was
inserted inside when
you push Disc1~5
button?
YES

NO

NO

SW5 &amp; SW7 signals
on PN4402 are OK?

Check the MD mecha

YES
NO

Check the output signal of
ES8390 to IC401 for control
OPEN/CLOSE.

NO

OPEN / CLOSE
signals on IC401 are
OK?

Check the Tray control I/O
Pin on IC401.

YES

Load+ &amp; load- signals
on PN4402 are OK?
YES
A
LGE Internal Use Only

Check the cable connection between
DVD PCB and MD (MECHA).
3-32

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

A
YES
Does the
SLED move to inner side
when it is at outer
position?

NO

YES

Motor Drive
DRV_MUTE pin
is high?

YES

Check the MD

YES

SLED signal is OK?

YES Check the related circuit of SLED
and Motor driver IC ( IC401)

YES
Do not put in disc and
tray close.

Check the cable connection
with MECHA.

YES
Optical
Lens is moving
for searching Focus?

NO

YES

Proper
Focus outputs
to motor driver?

NO

Check Focus connection on
ES8390 and motor driver IC.

YES
NO
Proper F+ &amp; F-outputs?

Check the motor driver (IC401).

YES
B

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

Check cable connection
with pick-up head.

3-33

LGE Internal Use Only

B
YES
Laser turns on
when reading
disc?

NO

YES

NO

Check the laser power circuit between
ES8390 and power transistor.
(Q405, Q406)

NO

Check the related circuit of laser
power transistor.

NO

Check the SPINDLE related
circuit on SLOT.

NO

DVDLD or CDLD
output properly?

Check the SPINDLE control of
motor driver ES8390.

YES
Collector
voltage of power transistor
is ok? (Q405, Q406)

YES
Check cable connection
between PN4401 and pick-up head.

Put disc in SLOT.

NO
Laser off.

YES

Does SPINDLE
rotate?

YES

NO

Proper SPINDLE
signal on ES8390.

YES

SPIN+ &amp; SPIN- output
properly?
YES
C

LGE Internal Use Only

Check the cable connection
between PN4401 and MD.

3-34

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

C
YES
NO
Focus On OK?

YES

Proper signal on
A,B,C,D from MD?

NO

Check the connections between
PN4401 and pick-up head.

NO

Check the related circuit of
ES8390 FOCUS signal.

NO

Check the related circuit
between IC401 and ES8390.

NO

Check the Tracking control
on motor driver (IC401).

YES

Proper FOD signal on
IC401?
YES
Check cable connection
between PN4401 and MD.

NO
Tracking OK?

YES

Proper TRD signal on
IC401?
YES

T+ &amp; T- output
properly?
YES
Check cable connection on
pick-up head.

NO
Disc play?

Check RF signal waveform.

YES
D

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-35

LGE Internal Use Only

D
YES
All
outputs are Ok
during playing
DISK ?

NO

YES

Audio signal data on
ES8390 is OK?

NO

Check the SERIAL RESISTOR
between ES8390 and IC702.

YES
Check the IC702.

NO
TEST END

LGE Internal Use Only

Picture
signal data on
ES8390 is OK?

3-36

NO

For example composite video ,
Check the video mute TR
(Q501), Output of Video buffer
IC (IC507) and ES8390
video signal data.

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3. USB PART
TURN ON USB
YES
&quot; Searching &quot; or
&quot; USB &quot; Display check.

NO

YES

Check the POWER supply circuit.
(Check PN102)
YES
Check the HRST#signal.

YES
Check the HRST#signal.Check the USB PART
and DVD PART line.

NO
Reading OK check.
YES

Check the USB JACK POWER supply.
(Check PN205)
YES
Check the USB DATA LINE. (PN205)

YES
Check the ES8390.
Check DATA LINE PIN 91(USB-No)90(USB-Po)

OK

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-37

LGE Internal Use Only

LGE Internal Use Only

3-38

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

WAVEFORMS OF MAJOR CHECK POINT
1. WHEN POWER ON, RESET &amp; DATA ETC WAVEFORM
1.RESET(DVD)
2.RX
3.TX
4.LCS3#(FLASH)

Playing at USB
function
1.HRST#
2.5V
3.D4.D+

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-39

LGE Internal Use Only

2. OPEN/CLOSE WAVEFORM AT POWER ON (OPEN AND CLOSE)
1.Limit SW
2.OPEN
3.CLOSE

3. STARTING ACTION WAVEFORM IN MD DEVICE (SLED HOME)
1.SLO (from
MPEG)
2.SLED3.SLED+
(At Power on )

LGE Internal Use Only

3-40

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

4. FOCUS WAVEFORM
1.FDO
2.F+
3.F(INSERT CD )

(INSERT DVD )
1.FDO
2.F+
3.F-

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-41

LGE Internal Use Only

5. AT POWER ON ,SPINDLE SIGNAL AT MD DECK
1.Spind
2.Spin+
3.Spin-

6. AT FIRST ACTION,FOCUS SIGNAL A,B,C,D
1.A
2.B
3.C
4.D

LGE Internal Use Only

3-42

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

7. TRACKING SIGNAL
1.Tro
2.Tr3.Tr+

8. RF WAVEFORM

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-43

LGE Internal Use Only

9. DISK TYPE JUGEMENT WAVEFORM

(DVD)

1.F+
2.FDO
3.SVRRF

(CD)

LGE Internal Use Only

3-44

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

WIRING DIAGRAM

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-45

3-46

LGE Internal Use Only

BLOCK DIAGRAMS
IPOD &amp; KEY PCB

FRONT PCB

SLOT MD
SLOT M
TAS53X2
TAS53

12.288MHZ

VFD
HIJK

``

BCK,LRCK, ADTA0,ADATA3

HP_L/R

PWM_CLK,DAT,RST,AMP_PDN

AMP_SD/PROTECT

BUFFER
MC4580

27MHZ

VIDEO
DRIVER
BH7868

SERVO
PART

DVD_DI_DO_CLK (3)

-CO M
san
sanyo
100 PIN
100PIN

DAT

P_SENS(1)

COMP.
Y

MPEG
MPEG
ESS8390
ESS8390

VIDEO
PART

Pr

Pb

R

C

AUX

SCART &amp; HD/RADIO
JACK PCB

SCART

IPOD_RX, TX

BT_LED
BT_MPKEY

RST IC

P_CTL (1)

+36V
3.3V
+5V
-12V
+12V

Composite
Y, Pb, Pr (4)

L

AUDIO PART

FL+
FLVKK
+5.6VA

FLASH
FLASH

9.8304MHZ

CLK

DEMO
OPTION

MCL ,BC
K K,LRC ADT
K,
AT

IPOD

IPOD_VIDEO,
IPOD_L/R,
AUX_L/R,
PORT_L/R,

BLUE TOOTH
MODULE

BT_L/R,

ADC
CS5345

TUNER
TUNE

SCART_L/R,

TUNER_L/R

ADC_CLK, DAT,

SMPS

LGE Internal Use Only

SDRAM
SDRAM

EEPROM
EEPRO

Composite
Y, Pb, Pr (4)

DVD RST(1)

EEPROM

CD_DVDCT,VC,DVDMDI,CDLDO,DVDLDO(5)

LOAD-/+,SPIN-/+
SLED-/+(6)
SPNN,SPNP(2)

MIC OPTION

SLO,SPINO,OPEN,
CLOSE,FOO,TRO,
DRV_MUTE,SVREF(8)

MIC_SIG

HDP

HP_L/R

POT

PWM
PW
9830
9830B

R,G,B,V

FAN_CTL

IPOD

USB_N,P

FAN

VFD_DO,VFD_STB,VFD_CLK
RCU,TOUCH_CLK,TOUCH_DAT
STBY_LED,KEY,H/P_SENS,
MIC_VOL,,MIC_DET

USB

PORT_L/R

IPOD_RX,IPOD_TX
IPOD_LR,IPOD_VIDEO

IPOD_PWR,IPOD_DET, KEY2

MOTOR
DRV. IC
IP9010

SPK FR+
SPK FR-

FR+/FR-

PICK_UP
PICK_UP

RF,PUDET,F,E,A,D,C,B,LOAD_SW1/SW2(10)

RCU

PT6324
DRVER
IC

SPK FL+
SPK FL-

TUNER_DI,DO,CE,,MUTE,RDS_CLK,DAT

3-47

3-48

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

SCHEMATIC DIAGRAMS

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

1. SMPS SCHEMATIC DIAGRAM

COMPONENTS ARE SHADED ON THE SCHEMATIC NOTE :
1. Shaded( ) parts are critical for safety. Replace only
FOR EASY IDENTIFICATION.
THIS CIRCUIT DIAGRAM MAY OCCASIONALLY DIFwith specified part number.
2. Voltages are DC-measured with a digital voltmeter
FER FROM THE ACTUAL CIRCUIT USED. THIS WAY,
IMPLEMENTATION OF THE LATEST SAFETY AND
during Play mode.
PERFORMANCE IMPROVEMENT CHANGES INTO
THE SET IS NOT DELAYED UNTIL THE NEW SERVICE
LITERATURE IS PRINTED.

12

11

10

9

8

7

6

5

4

3

2

NOTES)

NOTE)
NOTE)
NOTE)
NOTE)

1

A

B

Symbol denotes DC chassis ground.

Warning
Parts that are shaded are critical
With respect to risk of fire or
electricial shock.

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

2008.01.09
E

F

G

H

I

3-49

J

K

L

3-50

M

N

O

P

Q

R

S

T

LGE Internal Use Only

2. MICOM SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

LGE Internal Use Only

B

C

D

E

F

G

H

I

3-51

J

K

L

3-52

M

N

O

P

Q

R

S

T

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3. AMP SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

B

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

E

F

G

H

I

3-53

J

K

L

3-54

M

N

O

P

Q

R

S

T

LGE Internal Use Only

4. I/O SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

LGE Internal Use Only

B

C

D

E

F

G

H

I

3-55

J

K

L

3-56

M

N

O

P

Q

R

S

T

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

5. MPEG SCHEMATIC DIAGRAM

12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

B

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

E

F

G

H

I

3-57

J

K

L

3-58

M

N

O

P

Q

R

S

T

LGE Internal Use Only

6. SERVO SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

LGE Internal Use Only

B

C

D

E

F

G

H

I

3-59

J

K

L

3-60

M

N

O

P

Q

R

S

T

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

7. IPOD SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

B

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

E

F

G

H

I

3-61

J

K

L

3-62

M

N

O

P

Q

R

S

T

LGE Internal Use Only

8. SCART SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

LGE Internal Use Only

B

C

D

E

F

G

H

I

3-63

J

K

L

3-64

M

N

O

P

Q

R

S

T

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

9. FRONT SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

B

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

E

F

G

H

I

3-65

J

K

L

3-66

M

N

O

P

Q

R

S

T

LGE Internal Use Only

10. MIC SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

LGE Internal Use Only

B

C

D

E

F

G

H

I

3-67

J

K

L

3-68

M

N

O

P

Q

R

S

T

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

11. TOUCH SCHEMATIC DIAGRAM
12

11

10

9

8

7

6

5

4

3

2

1

2008.01.09
A

B

C

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

D

E

F

G

H

I

3-69

J

K

L

3-70

M

N

O

P

Q

R

S

T

LGE Internal Use Only

PRINTED CIRCUIT BOARD DIAGRAMS
1. SMPS P.C. BOARD DIAGRAM

NOTE: Warning
Parts that are shaded are critical With
respect to risk of fire or electrical shock.

LGE Internal Use Only

3-71

3-72

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

2-1. MAIN P.C. BOARD DIAGRAM ( TOP VIEW )

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-73

3-74

LGE Internal Use Only

2-2. MAIN P.C. BOARD DIAGRAM ( BOTTOM VIEW )

LGE Internal Use Only

3-75

3-76

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-1. IPOD &amp; KEY P.C. BOARD DIAGRAM ( TOP VIEW )

3-2. IPOD &amp; KEY P.C. BOARD DIAGRAM ( BOTTOM VIEW )

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-77

3-78

LGE Internal Use Only

4-1. I/O P.C. BOARD DIAGRAM ( TOP VIEW )

5. MIC P.C. BOARD DIAGRAM

4-2. I/O P.C. BOARD DIAGRAM ( BOTTOM VIEW )

LGE Internal Use Only

3-79

3-80

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

6. FRONT P.C. BOARD DIAGRAM

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

3-81

3-82

LGE Internal Use Only

7-1. TOUCH KEY P.C. BOARD DIAGRAM ( TOP VIEW )

8-1. TOUCH SLIDE P.C. BOARD DIAGRAM ( TOP VIEW )

7-2. TOUCH KEY P.C. BOARD DIAGRAM ( BOTTOM VIEW )

8-2. TOUCH SLIDE P.C. BOARD DIAGRAM ( BOTTOM VIEW )

LGE Internal Use Only

3-83

3-84

Copyright (C) 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes


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