Sharp LC37D42U Schematic

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SUPPLEMENT ATTACHED

LC-32D42U/LC-37D42U

SERVICE MANUAL

No. S06X9LC32D42U

LCD COLOR TELEVISION

LC-32D42U

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should
be restored to its original condition and only parts identical to those specified should be used.

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY PRE-

CAUTION ............................................................i

PRECAUTIONS A PRENDRE LORS DE

LA REPARATION...............................................ii

PRECAUTIONS FOR USING LEAD-FREE

SOLDER ........................................................... iii

PRECAUTIONS IN SERVICING THE

HDCP-KEY ROM ..............................................iv

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL .................................. 2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ................................................ 3-1

LC-37D42U

CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM

[1] OVERALL WIRING DIAGRAM ......................8-1

[2] SYSTEM BLOCK DIAGRAM .........................8-3

CHAPTER 9. PRINTED WIRING BOARD ASSEM­BLIES

[1] MAIN Unit ...................................................... 9-1

[2] AV TERMINAL Unit........................................9-9

[3] R/C, LED Unit .............................................. 9-11

[4] KEY Unit ......................................................9-12

CHAPTER 10. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM.......................................................... 10-1

[2] R/C, LED Unit ..............................................10-2

[3] MAIN Unit ....................................................10-3

[4] AV TERMINAL Unit....................................10-43

[5] KEY Unit ....................................................10-47

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS ................... 4-1

CHAPTER 5. ADJUSTMENT

[1] ADJUSTMENT PROCEDURE ....................... 5-1

CHAPTER 6. TROUBLE SHOOTING TABLE

[1] TROUBLE SHOOTING TABLE...................... 6-1

CHAPTER 7. MAJOR IC INFORMATIONS

[1] MAJOR IC INFORMATIONS.......................... 7-1

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the
safety and performance of the set.

Parts Guide

This document has been published to be used for
after sales service only.
The contents are subject to change without notice.

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

SAFETY PRECAUTION

Service Manual

IMPORTANT SERVICE SAFETY PRECAUTION

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the
servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be
attempted.

2. Disconnect AC power before servicing.

CAUTION: FO R C O N T I N U E D PROTECTION
AGAINST A RISK OF FIRE REPLACE ONLY WITH
SAME TYPE FUSE.

F7001 (250V 6.3A)

• Use an AC voltmeter having with 5000 ohm per volt, or higher, sen­sitivity or measure the AC voltage drop across the resistor.

• Connect the resistor connection to all exposed metal parts having a
return to the chassis (antenna, metal cabinet, screw heads, knobs
and control shafts, escutcheon, etc.) and measure the AC voltage
drop across the resistor.

All checks must be repeated with the AC cord plug connection
reversed. (If necessary, a nonpolarized adaptor plug must be used
only for the purpose of completing these checks.)

Any reading of 0.75 Vrms (this corresponds to 0.5 mA rms AC.) or
more is excessive and indicates a potential shock hazard which
must be corrected before returning the monitor to the owner.

DVM

BEFORE RETURNING THE RECEIVER (Fire &
Shock Hazard)

Before returning the receiver to the user, perform the following
safety checks:

3. Inspect all lead dress to make certain that leads are not pinched,
and check that hardware is not lodged between the chassis and
other metal parts in the receiver.

4. Inspect all protective devices such as non-metallic control knobs,
insulation materials, cabinet backs, adjustment and compartment
covers or shields, isolation resistor-capacitor networks, mechanical
insulators, etc.

5. To be sure that no shock hazard exists, check for leakage current in
the following manner.

• Plug the AC cord directly into a 120 volt AC outlet.

• Using two clip leads, connect a 1.5k ohm, 10 watt resistor paral­leled by a 0.15µF capacitor in series with all exposed metal cabinet
parts and a known earth ground, such as electrical conduit or elec­trical ground connected to an earth ground.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

TO EXPOSED
METAL PARTS

AC SCALE

1.5k ohm
10W

0.15µF

TEST PROBE

CONNECT TO
KNOWN EARTH
GROUND

SAFETY NOTICE

Many electrical and mechanical parts in LCD color television have
special safety-related characteristics.

These characteristics are often not evident from visual inspection, nor
can protection afforded by them be necessarily increased by using
replacement components rated for higher voltage, wattage, etc.

Replacement parts which have these special safety characteristics are
identified in this manual; electrical components having such features

are identified by " " and shaded areas in the Replacement Parts List
and Schematic Diagrams.

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

For continued protection, replacement parts must be identical to those
used in the original circuit.

The use of a substitute replacement parts which do not have the same
safety characteristics as the factory recommended replacement parts
shown in this service manual, may create shock, fire or other hazards.

i

LC-32D42U/LC-37D42U

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux
conseils suivants.

•

AVERTISSEMENT

1.

N'entreprendre aucune modification de tout circuit. C'est danger­eux.

2.

Débrancher le récepteur avant toute réparation.

PRECAUTION: POUR LA PROTECTION CON­TINUE CONTRE LES RISQUES D'INCENDIE,
REMPLACER LE FUSIBLE

F7001 (250V 6.3A)

VERIFICATIONS CONTRE L'INCEN-DIE ET LE
CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifica­tions suivantes.

Inspecter tous les faisceaux de câbles pour s'assurer que les fils

3.
ne soient pas pincés ou qu'un outil ne soit pas placé entre le châs­sis et les autres pièces métalliques du récepteur.

4.

Inspecter tous les dispositifs de protection comme les boutons de
commande non-métalliques, les isolants, le dos du coffret, les cou­vercles ou blindages de réglage et de compartiment, les réseaux
de résistancecapacité, les isolateurs mécaniques, etc.

5.

S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la
fuite de courant, de la facon suivante:

•

Brancher le cordon d'alimentation directem-ent à une prise de cou­rant de 120V. (Ne pas utiliser de transformateur d'isolation pour
cet essai).

A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ
10 watts en parallèle avec un condensateur de 0.15µF en série
avec toutes les pièces métalliques exposées du coffret et une terre
connue comme une conduite électrique ou une prise de terre
branchée à la terre.

•

Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour
mesurer la chute de tension en travers de la résistance.

•

Toucher avec la sonde d'essai les pièces métalliques exposées qui
présentent une voie de retour au châssis (antenne, coffret métalli­que, tête des vis, arbres de commande et des boutons, écusson,
etc.) et mesurer la chute de tension CA en-travers de la résistance.
Toutes les vérifications doivent être refaites après avoir inversé la
fiche du cordon d'alimentation. (Si nécessaire, une prise
d'adpatation non polarisée peut être utilisée dans le but de termin­er ces vérifications.)
La tension de pointe mesurèe ne doit pas dépasser 0.75V (corre­spondante au courant CA de pointe de 0.5mA).
Dans le cas contraire, il y a une possibilité de choc électrique qui
doit être supprimée avant de rendre le récepteur au client.

DVM

ECHELLE CA

1.5k ohm
10W

µ

F

0.15

SONDE D'ESSAI

AUX PIECES
METALLIQUES
EXPOSEES

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

BRANCHER A UNE
TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les télévi­seur ACL présentent des caractéristiques spéciales relatives à la sé­curité, qui ne sont souvent pas évidentes à vue. Le degré de protec­tion ne peut pas être nécessairement augmentée en utilisant des
pièces de remplacement étalonnées pour haute tension, puissance,
etc.
Les pièces de remplacement qui présentent ces caractéristiques sont
identifiées dans ce manuel; les pièces électriques qui présentent ces
particularités sont identifiées par la marque " " et hachurées dans la
liste des pièces de remplacement et les diagrammes schématiques.

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Pour assurer la protection, ces pièces doivent être identiques à celles
utilisées dans le circuit d'origine. L'utilisation de pièces qui n'ont pas
les mêmes caractéristiques que les pièces recommandées par l'usine,
indiquées dans ce manuel, peut provoquer des électrocutions, incen­dies, radiations X ou autres accidents.

ii

LC-32D42U/LC-37D42U

PRECAUTIONS FOR USING LEAD-FREE SOLDER

Employing lead-free solder

• “PWBs” of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type of lead-free solder.

Example:

Indicates lead-free solder of tin, silver and copper. Indicates lead-free solder of tin, silver and copper.

Using lead-free wire solder

• When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause dam­age or accident due to cracks.

As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 °C, we recommend you to use a dedicated soldering
bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor
solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be
peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the
steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit as
required.

If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.

When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.

• Be careful when replacing parts with polarity indication on the PWB silk.

Lead-free wire solder for servicing

PARTS CODE

ZHNDAi123250E BL J φ0.3mm 250g (1roll)
ZHNDAi126500E BK J φ0.6mm 500g (1roll)
ZHNDAi12801KE BM J φ1.0mm 1kg (1roll)

PRICE
RANK

PART

DELIVERY

DESCRIPTION

iii

LC-32D42U/LC-37D42U

PRECAUTIONS IN SERVICING THE HDCP-KEY ROM

Applied part: HDCP-KEY ROM

IC8451 RH-IXB979WJQZY (updated ROM)

The HDCP-KEY ROM shall be protected and managed for its information inside. In servicing this ROM, therefore, take the following information pro­tection/management measures.

1) When disposing of the component parts and PWBs, destruct the IC itself in a proper way.

(For repairing or replacing the component parts and PWBs as well as clearing those in stock)

2) In storing the component parts, protect and manage them against theft and disclosure.

(For storing the service parts, service units, etc.)

iv

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Service Manual

Item

LCD panel

Number of dots

TV
Function

TV-standard (CCIR)

Receiving
Channel

Audio multiplex

Audio out

Terminals

Rear

VHF/UHF

CATV

Digital Terrestrial
Broadcast (8VSB)

Digital cable
(64/256 QAM)

INPUT 1

INPUT 2

INPUT 3

INPUT 4

INPUT 5

Model: LC-32D42U

32" Advanced Super View & BLACK TFT
LCD

3,147,264 dots (1366 768 3 dots)

American TV Standard ATSC/NTSC System

VHF 2-13ch, UHF 14-69ch

1-135ch (non-scrambled channel only)

2-69ch

*1

1-135ch (non-scrambled channel only)

BTSC System

10W 2

AV in, COMPONENT in

S-VIDEO in, AV in

Audio in, COMPONENT in

HDMI in with HDCP

Audio in, HDMI in with HDCP

37" Advanced Super View & BLACK TFT
LCD

Model: LC-37D42U

INPUT 6 15 pin mini D-sub, Audio in (Ø 3.5 mm jack)

ANTENNA

DIGITAL AUDIO OUTPUT

OUTPUT

OSD language

Power Requirement

Power Consumption

Weight

w/o stand

with stand

Dimension

*2

(W H D)

w/o stand

with stand

Operating temperature

*1

Emergency alert messages via Cable are unreceivable.

*2

The dimensional drawings are shown on the inside back cover.

75 Unbalance, F Type 1 for Analog (VHF/UHF/CATV) and Digital (AIR/CABLE)

Optical Digital audio output 1 (PCM/Dolby Digital)

Audio out

English/French/Spanish

AC 120 V, 60 Hz

175 W (0.95 W Standby with AC 120V)

36.4 lbs./16.5 kg

43.0 lbs./19.5 kg

11

31

/322059/64353/64inch

11

31

/322313/64937/64inch

+++

32°F to 104°F (0°C to 40°C)

185 W (0.95 W Standby with AC 120V)

43.0 lbs./19.5 kg

50.7 lbs./23.0 kg

61

/642337/64353/64inch

35

61

/642527/321135/64inch

35

As part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product
improvement without prior notice. The performance specification figures indicated are nominal values of production units.
There may be some deviations from these values in individual units.

1 – 1

LC-32D42U/LC-37D42U

CHAPTER 2. OPERATION MANUAL

[1] OPERATION MANUAL

Part names

TV (Front)

LC-32D42U/LC-37D42U

Service Manual

TV (Rear)

Remote control sensor

OPC sensor*

HDMI terminal (INPUT 4)

HDMI terminal (INPUT 5)

PC IN terminals (INPUT 6)

Antenna/Cable in

Channel buttons

(CH /)

Volume
buttons

-

(VOL /)

+

OPC indicator*

SLEEP indicator**

POWER indicator**

INPUT button

POWER button

AUDIO terminals (INPUT 5)

DIGITAL AUDIO OUTPUT terminal

INPUT 3 terminals

INPUT 2 terminals

INPUT 1 terminals

AUDIO OUTPUT terminals

AC INPUT terminal

2 – 1

LC-32D42U/LC-37D42U

Part names

Remote control unit

114

2
3

4

5

6

7

8

9

10

11 23

12

13 27

15

16

17

18

19

20

21

22

24

25

26

1 TV POWER: Switch the TV power on or enters

standby mode.

2 DISPLAY: Display the channel information.
3 SOURCE POWER: Turns the power of the external

equipment on and off.

4 External equipment operational buttons: Operate

the external equipment.

50_9: Set the channel.
6 (DOT):
7 INPUT: Select a TV input source. (TV, INPUT 1,

INPUT 2, INPUT 3, INPUT 4, INPUT 5, INPUT 6)

8VOL/:Set the volume.
9 SURROUND: Select Surround settings.

10 FREEZE: Set the still image. Press again to return to

normal screen.

11 EXIT: Turn off the menu screen.
12 SLEEP: Set the sleep timer.
13 AUDIO: Selects the MTS/SAP or the audio mode

during multi-channel audio broadcasts.

14 FUNCTION: Switches the remote control for TV,

CBL/SAT, VCR, DVD and AUDIO operation. Indicator
lights up for the current mode.

* To enter the code registration mode, you need to
press FUNCTION and DISPLAY at the same time.

15 LIGHT : When pressed all buttons on the remote

control unit will light. The lighting will turn off if no
operations are performed within about 5 seconds.
This button is used for performing operations in low­light situations.

16 VIEW MODE: Select the screen size.

17 ENT: Jumps to a channel after selecting with the 0_9

buttons.

18 FLASHBACK: Return to the previous channel or

external input mode.

19 CH / : Select the channel.
20 MUTE: Mute the sound.
21 MENU: Display the menu screen.
22 ////ENTER: Select a desired item on the

screen.

23 RETURN: Return to the previous menu screen.
24 FAVORITE CH

A, B, C, D: Select 4 preset favorite channels in 4

different categories.
While watching, you can toggle the selected channels

by pressing A, B, C and D.

25 FAVORITE: Register favorite channel.
26 CC: Display captions from a closed-caption source.

NOTE

When using the remote control unit, point it at the TV.

27 AV MODE: Select an audio or video setting.

(When the input source is TV, INPUT 1, 2 or 3:
STANDARD, MOVIE, GAME, USER, DYNAMIC (Fixed),
DYNAMIC. When the input source is INPUT 4, 5 or 6:
STANDARD, MOVIE, GAME, PC, USER, DYNAMIC
(Fixed), DYNAMIC)

2 – 2

LC-32D42U/LC-37D42U

QUICK REFERENCE

Attaching the stand

Before attaching (or detaching) the stand, unplug the AC cord from the AC INPUT terminal.
Before performing work spread cushioning over the base area to lay the TV on. This will prevent it from being
damaged.

CAUTION

Attach the stand in the correct direction.
Be sure to follow the instructions. Incorrect installation of the stand may result in the TV falling over.

Confirm that there are 9 screws (all the same

1 3

size) supplied with the TV.

2

Set the post for the stand unit onto the
box.

Attach the base to the post.
Insert and tighten the 5 screws into the 5

holes on the bottom of the base.

Hex key

Screw

Insert the stand into the openings on the
bottom of the TV.

Insert and tighten the 4 screws into the 4
holes on the rear of the TV.

Hex key

Screw

Soft cushion

NOTE

To detach the stand, perform the steps in reverse order.

2 – 3

LC-32D42U/LC-37D42U

Basic adjustment settings

Menu items for TV/INPUT 1/2/3 Menu items for HDMI/PC-IN

OPC
Backlight
Contrast
Brightness
Color
Tint
Sharpness
Advanced

Color Temp.
Black
I/P Setting
Film Mode
3D-Y/C
Monochrome
Range of OPC

Treble
Bass
Balance
Surround

No Signal Off
No Operation Off

Picture

Audio

Power Control

OPC
Backlight
Contrast
Brightness
Color
Tint
Sharpness
Advanced

Color Temp.
Black
I/P Setting
Film Mode
Monochrome
Range of OPC

Treble
Bass
Balance
Surround

No Signal Off
No Operation Off

Picture

Audio

Power Control

EZ Setup
CH Setup
Antenna Setup-DIGITAL
Input Skip
Input Label
Parental CTRL
Position
Language
Reset

Audio Only
Digital Noise Reduction
Input Select
Output Select
Color System
Caption Setup
Program Title Display
Favorite CH

Audio Setup

Setup

Option

Digital Setup

Setup

Input Skip
Input Signal
Auto Sync.
Input Label
Fine Sync.
Position
Language
Reset

Option

Audio Only
Digital Noise Reduction
HDMI Setup
Output Select

NOTE

Some menu items may not be displayed depending on the
selected input source.

2 – 4

LC-32D42U/LC-37D42U

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

LC-32D42U/LC-37D42U

Service Manual

LC-32D42U

(531)2

(589)

64

64

/

/

59

13

23

20

(58)3

32

/

9

(85)

64

/

23

(200)

8

/

7

7

31

279/16(700.0)

19

11

/32(796)

45

/64(500)

77/8(200)

(394.6)

64

/

35

15

(343)

2

/

1

13

Unit: inch/(mm)

45

19

/64(500)

9

/32(83) 353/64(97)

3

LC-37D42U

(599)

(656)

64

32

/

/

37

27

23

25

(57)

4

/

1

2

(85)

64

/

23

3

(200)

8

/

7

7

32

25

/64(822.6)

61

35

/64(913)

2135/64(547)

77/8(200)

(463.8)

64

/

17

18

(377)

32

/

27

14

5

4

/8(117)

37

/64(243)

9

2135/64(547)

353/64(97)

3 – 1

11

35

/64(293)

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 4. REMOVING OF MAJOR PARTS

Service Manual

[1] REMOVING OF MAJOR PARTS

1. Remove the SD Card Cover.

2. Remove the 4 lock screws and detach the Stand Base Ass'y.

3. Remove the 9 lock screws, 5 lock screws and detach the Rear Cabinet.

Front Cabinet

3

SD Card Cover

1

3

2

Stand Base Ass'y

Rear Cabinet

4 – 1

4. Remove the 2 lock screws and detach the Stand Assist Angle.

5. Remove the 4 lock screws and detach the Center Angle-L and R.

6. Remove the 1 lock screw and detach the Stand Area Cover.

7. Remove the 4 lock screws and detach the Stand Fix Angle.

8. Remove the 6 lock screws and detach the MAIN Shield.

LC-32D42U/LC-37D42U

5

MAIN Shield

Center Angle-R

8

Center Angle-L

5

Stand Fix Angle

Stand Area Cover

4 – 2

6

Stand Assist Angle

7

4

LC-32D42U/LC-37D42U

9. Disconnect all the connectors from all the PWBs.

10.Remove the Top Cover Ass'y. Remove the 2 lock screws from the Top Cover Ass'y and detach the KEY Unit.

Top Cover Ass'y

KEY Unit

10

9

9

9

9

4 – 3

11.Remove the 4 lock screws and detach the Speaker-L and R.

12.Remove the 2 lock screws and detach the R/C, LED Unit.

13.Remove the 5 lock screws and detach the Tray Chassis.

Tray Chassis

LC-32D42U/LC-37D42U

13

Speaker-R

11

R/C, LED Unit

Speaker-L

12

11

4 – 4

LC-32D42U/LC-37D42U

14.Remove the 2 lock screws, 2 lock screws, 1 lock screw and detach the Jack Angle.

15.Remove the 6 lock screws and detach the POWER Unit.

16.Remove the 4 lock screws and detach the AV TERMINAL Unit.

17.Remove the 5 lock screws, 3 lock rivets and detach the MAIN PWB Radiator and MAIN Unit.

14

14

14

Jack Angle

MAIN PWB Radiator

17

MAIN Unit

17

17

15

POWER Unit

AV TERMINAL Unit

16

4 – 5

18.Remove the 6 lock screws and detach the Rug Angle Top-L and R.

19.Remove the 7 lock screws and detach the Rug Angle Bottom-L and R. (LC-32D42U)

Remove the 6 lock screws and detach the Rug Angle Bottom-L and R. (LC-37D42U)

20.Remove the 3 lock screws and detach the Chassis Fix Angle Top.

21.Remove the LCD Panel Module.

LC-32D42U/LC-37D42U

LC-32D42U

18

Rug Angle Top-R

Rug Angle Bottom-R

19

Chassis Fix Angle Top

18

19

20

18

18

Rug Angle Top-L

Rug Angle Bottom-L

19

19

LC-37D42U

18

Rug Angle Top-R

Rug Angle Bottom-R

19

Chassis Fix Angle Top

18

19

20

19

18

18

Rug Angle Top-L

Rug Angle Bottom-L

19

4 – 6

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 5. ADJUSTMENT

Service Manual

[1] ADJUSTMENT PROCEDURE

The adjustment values are set to the optimum conditions at the factory before shipping. If a value should become improper or an adjustment is
required due to part replacement, make an adjustment according to the following procedure.

1. After replacement of any PWB unit and/or IC for repair, please note the following.

• When replacing the following units, make sure to prepare the new units loaded with updated software.

MAIN Unit: DUNTKD862FM04

AV TERMINAL Unit: DUNTKD999FM04

2. Upgrading of each microprocessor software

Caution: Never “POWER OFF” the unit when software upgrade is ongoing.
Otherwise the system may be damaged beyond recovery.

2.1. Software version upgrade

The model employs the following software.

•Main software

• Monitor microprocessor software

The main software and the monitor microprocessor software can be upgraded by using a general-purpose SD memory card.

The followings are the procedures for upgrading, explained separately for each of the main software, the monitor microprocessor software.

2.2. Main software version upgrade

Get ready before you start

• SD memory card of 32MB or higher capacity

• PC running on Windows 98/98SE/ME/2000/XP operating system

• SD memory card reader/writer with USB connectivity.

• SD memory card formatting software

(Downloadable at http://panasonic.jp/support/audio/sd/download/sd_formatter_e.html)

Preparations

To upgrade the main software, it is necessary to get ready the SD card for version upgrade before you start.

Follow the steps below and create the SD card for version upgrade.

1. Insert the SD card into the SD card reader/writer. Start the SD card formatting software. Click [Format].
(When you have the drive options, select the drive where the SD card is inserted before you proceed.)

5 – 1

2. When the formatting is over, the following window appears. Click [OK].

3. Click [Exit] to finish the formatting.

NOTE: When you are done, take out the SD card once to make sure it is finished, and then insert it again.

LC-32D42U/LC-37D42U

4. Copy the binary image file D42UAxxx.SDC (named temporarily) for version upgrade to the root directory (folder) of the SD card drive.

NOTE: In the SD card drive, do not store other folders or unrelated files, or more than one binary image files for version upgrade.

Now the SD card for version upgrade is ready.

How to upgrade the software

5. Shut off the AC power (i.e. unplug the AC cord).

6. Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, under DIGITAL
AUDIO OUTPUT terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side.

NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly.

7. Turn on the AC power (i.e. plug in the AC cord).

8. After the unit startup, the system upgrade screen as shown below appears within 15~30 seconds.

< SYSTEM UPGRADE >

MAIN EEPROM

26 %

MONITOR

NO DATA

NG

OK

NG

OK

OLD Version

NEW Version

Boot Version

100 %

SD-CARD

DETECT

U0611093

U0611152

CFE-D42U 1.00

BOISE_D42U

OK

NG

NG

OK

5 – 2

LC-32D42U/LC-37D42U

9. Even a single failure in the process will trigger the upgrade failure screen as shown below. The word “NG” changes to red for the item failed.

NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled.

< UPGRADE FAILURE >

MAIN EEPROM

0%

MONITOR

NO DATA

NG

OK

NG

OK

OLD Version

NEW Version

Boot Version

100 %

SD-CARD

DETECT

U0611093

U0611152

CFE-D42U 1.00

BOISE_D42U

OK

NG

OK

NG

10.Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this
screen. The version information appears after the upgrade is complete.

< UPGRADE SUCCESS >

MAIN EEPROM

100 %

MONITOR

NO DATA

NG

OK

NG

OK

OLD Version

NEW Version

Boot Version

100 %

SD-CARD

DETECT

U0611093

U0611152

CFE-D42U 1.00

BOISE_D42U

NG

OK

NG

OK

11.Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.

12.Now the software version upgrade is complete.

NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the main

software version information.

5 – 3

LC-32D42U/LC-37D42U

2.3. Monitor microprocessor software version upgrade

NOTE: If “Monitor version” in the process menu is “2.00M”, the monitor microprocessor software can not be rewritten (because IC2002 has been

replaced with the mask type).

Get ready before you begin

Get ready the same items as listed in the “Main software version upgrade”.

Preparation

Create the SD card for monitor microprocessor software version upgrade in the same manner as explained in the “Main software version upgrade”.
Copy the binary image files D42UMxxx.SDC and D42UMxxx.BIN (named temporarily) for monitor microprocessor software version upgrade to the SD
card drive.

How to upgrade the software

1. Shut off the AC power to the unit (i.e. unplug the AC cord).

2. Insert the SD card for version upgrade (prepared as above) into the service socket located lower side from center at terminals, above S-VIDEO
terminal in the rear of the unit, in a way that the cut corner of the SD card comes at the upper side.

NOTE: If the SD card is inserted in a wrong way, the card will go deep inside the unit beyond retrieval. Take due care to insert the SD card correctly.

3. Turn on the AC power (i.e. plug in the AC cord).

CAUTION: The moment this operation is done, the upgrading of the monitor microprocessor software starts. While the upgrade is ongoing,

never power off the unit. Otherwise the upgrade will fail and the system may have a serious damage beyond recovery (inability
to start).

4. After the unit startup, the system upgrade screen as shown below appears within 15~30 seconds.

MONITOR UPGRADE

Program

12%

1.00OLD Version

NEW Version 1.02

NG

BOISE_D42U

5. A failure in the process will trigger the upgrade failure screen. The word “NG” changes to red for the item failed.

NOTE: In the event of a failure, repeat the upgrading process. If the process repeatedly fails, it is likely that the hardware is troubled.

6. Upon completion of the whole process, the upgrade success screen as shown below appears. You can check the new software version on this
screen. The version information appears after the upgrade is complete.

7. Shut off the AC power to the unit (unplug the AC cord), and remove the SD card for version upgrade.

8. Now the software version upgrade is complete.

NOTE: When you are done with the software version upgrade, start the set, go to the top page of the adjustment process screen and check the mon-

itor microprocessor software version information.

2.4. Signal adjustment

1. Checking the Device

Before starting the adjustment, make sure the adjustment tool and signal generator are set for Sharp LCD US.

Checking the signal generator level adjustment (Set to the standard level.)

• Composite signal : 0.714 Vp-p ± 0.02 Vp-p (from pedestal to white)

• 15K component signal : Y level : 0.714 Vp-p ± 0.02 Vp-p (from pedestal to white)
PB, PR level : 0.7 Vp-p ± 0.02 Vp-p

• 33K component signal : Y level : 0.7 Vp-p ± 0.02 Vp-p (from pedestal to white)
PB, PR level : 0.7 Vp-p ± 0.02 Vp-p

• Analog RGB signal : RGB level : 0.7 Vp-p ± 0.02 Vp-p (from pedestal to white)

5 – 4

LC-32D42U/LC-37D42U

2. Process mode

Adjustment item Adjustment conditions Adjustment procedure

1 Process mode Enter the process adjustment mode using the process adjustment remote controller.

3. Composite N358 signal/tuner adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting N358 signal

US-10ch

Feed the N358 color bar signal (75% color saturation) to VIDEO 1 input.
Feed the RF signal (by use of US-10ch) to TUNER.

[Video input signal] [US-10ch]

75% Color saturation

100% white 0% black 100% white

2 Automatic adjust-

ment execution

4. Component 15K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting 480i signal Feed the 100% color bar signal to VIDEO 1 COMPONENT input.

2 Automatic adjust-

ment execution

5. Component 33K signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting 1080i signal Feed the 100% color bar signal to VIDEO 1 COMPONENT input.

Move the cursor to [ N358 ALL ADJ] and press the [ENTER] key.

When [ N358 ALL ADJ OK] appears, the adjustment is complete.

100% Color saturation

100% white

Move the cursor to [ COMP 15K MAIN ADJ] and press the [ENTER] key.
When [ COMP 15K MAIN ADJ OK] appears, the adjustment is complete.

480i
100% color bar

0% black

2 Automatic adjust-

ment execution

100% Color saturation

100% white

Move the cursor to [ HDTV ADJ] and press the [ENTER] key.
When [ HDTV ADJ OK] appears, the adjustment is complete.

1080i
100% color bar

0% black

5 – 5

6. Analog RGB signal adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting Analog RGB signal: XGA

(1024x768) 60Hz
SYNC: HV separate

Feed the XGA 100% color bar signal to ANALOG RGB input.

LC-32D42U/LC-37D42U

100% Color saturation

100% white

2 Automatic adjust-

ment execution

7. Tuner/V-Chip test

Adjustment item Adjustment conditions Adjustment procedure

1 Setting NTSC RF signal

US-7(AIR)ch

2 Automatic adjust-

ment execution

Move the cursor to [ ANALOG RGB] and press the [ENTER] key.

When [ ANALOG RGB OK] appears, the adjustment is complete.

Feed the NTSC signal to RF ANTENNA input.

Move the cursor to [ TUNER VCHIP TEST (*07ch)] and press the [ENTER] key. (*
Select the channel according to the RF signal.)

When [ A-OK(***.**)/VM-OK] appears in blue, the test is complete. (If [A-NG/VM-NG]
appears in yellow or red, the test is incomplete.)
Make sure a displacement of ± 0.0625 MHz from the center frequency is acceptable.

XGA
100% color bar

0% black

5 – 6

LC-32D42U/LC-37D42U

2.5. White balance adjustment

1. White balance adjustment

Adjustment item Adjustment conditions Adjustment procedure

1 Setting For detailed adjustment procedure, refer to “Kameyama Model Integral Monitor WB

Adjustment Specifications V1.4”.

1) Make the following settings for the set.
AV MODE: [DYNAMIC]
Backlight: +16
Aging time: Min. 60 minutes

2) Connect the white balance adjustment tool to the set.

2 Automatic adjust-

ment execution

[Command]
Process mode
KRSW0001
KKT10037

Setting
KYOF0000
OSDS0001
SBSL0016

Multi-point adjustment
mode
MSET0001

Adjustment value initializa­tion
MSET0004

Point 6
WBI60928
MG6G****
MG6B****
MG6R****

Point 5
WBI50800
MG5G****
MG5B****
MG5R****

[Adjustment procedure]

1) Using the remote controller, transmit the “monitor adjustment process” code.

2) Set the 6th point to the specified gradation level. With the strongest color being fixed,
turn down the R, G and B settings to their reference levels.

3) Set the 5th point to the specified gradation level. Correct the G setting (800 x 6th­point G setting / 928) (rounded off), and make the R and B settings to their reference
levels.

4) Set the 4th point to the specified gradation level. Correct the G setting (680 x 6th­point G setting / 928) (rounded off), and make the R and B settings to their reference
levels.

5) Set the 3rd point to the specified gradation level. Correct the G setting (480 x 6th­point G setting / 928) (rounded off), and make the R and B settings to their reference
levels.

6) Set the 2nd point to the specified gradation level. Correct the G setting (232 x 6th­point G setting / 928) (rounded off), and make the R and B settings to their reference
levels.

7) Set the 1st point to the specified gradation level. Correct the G setting (184 x 6th­point G setting / 928) (rounded off), and make the R and B settings to their reference
levels.

8) With the MSET0003 command, write the adjustment values and turn off the AC
power.

* Initial R, G and B settings at point 6: Gradation level set at 928
* Initial R, G and B settings at points 1 thru 5: Corrected G setting at each point
(This is because the adjustment is made to achieve the same remainder of RGB setting /
4 at each point.)
[Adjustment value]

•As per the “standard set” submitted by Engineering Department

“LC-32D42U” Teaching set
[Adjustment reference] Instrument: Minolta CA-210 Engineering instrument

Point 4 Level Reference Adj. spec Ins. spec
WBI40680 Point 6 928 X=0.272 ±0.0010 ±0.0020
MG4G**** y=0.277
MG4B**** Point 5 800 X=0.272 ±0.0010 ±0.0020
MG4R**** y=0.277

Point 4 680 X=0.272 ±0.0010 ±0.0020
Point 3 y=0.277
WBI30480 Point 3 480 X=0.272 ±0.0010 ±0.0020
MG3G**** y=0.277
MG3B**** Point 2 232 X=0.272 ±0.0020 ±0.0030
MG3R**** y=0.277

Point 1 184 X=0.272 ±0.0020 ±0.0030

y=0.277
Point 2
WBI20232
MG2G****

MG2B****
MG2R****

Point 1
WBI10184
MG1G****
MG1B****
MG1R****

Writing
MSET0003

Note Set conditions for inspection

AV MODE: [DYNAMIC] (Reset)

Monochro: ON

Black: OFF

Color Temp: High

Back Light: +16

Aging Time: Min. 60 minutes

5 – 7

2.6. Key writing

1. EDID writing (Main PWB: QPWBXD862WJZZ, analog RGB input terminal / HDMI input terminal)

Adjustment item Adjustment conditions Adjustment procedure

1 Analog RGB

EDID writing

2 HDMI EDID writ-

ing

File version checking 1) Using the checker, write the EDID data for HDMI to

IC1505 that is mounted on the main PWB.
TL1514: I2C clock, TL1515: I2C data
TL1516: 5V, TL1517: GND
TL1502: VCLK (Write: H, Read: V pulse)

2) In the analog RGB inspection, use a DDC-compatible
device. If the EDID has not been written, the analog
RGB input does not function normally.

Inspection mode
File version checking

1) Using the checker, write the analog HDMI EDID data to
IC1501 and IC1502 that are mounted on the main PWB.
TL1508/1510: I2C clock, TL1509/1511: I2C data
TL1512/1513: 5V, TL1519/1518: GND
TL1534/1535: Write protection (H: Write, L: Write
enable)

2) Write the data before the HDMI inspection with the
checker.
In the HDMI inspection, use a DDC-compatible device. If
the EDID has not been written, the HDMI does not func­tion normally.

LC-32D42U/LC-37D42U

5 – 8

LC-32D42U/LC-37D42U

2. Adjustment sequence (adjustment according to the G adjustment value of gradation 6)

* Make sure the adjusting point gradations are correct since they are different for each model.

PC Set

Set the light level to MAX with the light control command
(SBSL0016 for 45).
SBSL0016

Setting is complete.
OK

Multi point adjustment mode setting
MSET0001

Multi point adjustment mode is set.
OK

Initialize adjustment values.
MSET0004

Initialization is done.
OK

Adjustment gradation setting (point 6 = 236 gradation adjustment*)
WBI60944

Adjustment values are set.
OK

Pattern display

Repeat until RGB
become the target
values.

Adjust RGB to the target xy values.
MG6RXXXX
MG6GXXXX
MG6BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
* In order to adjust by reducing the value, set the strongest color
as the fixed color.
* The default adjustment value of RGB is the parameter value of
the WBI6 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Adjustment gradation setting (point 5 = 200 gradation adjustment*)
WBI50800

Pattern display

Adjustment values are set.
OK

Correction of G value
MG5GXXXX
When G is changed at gradation 6, calculate the ratio of the
change and set the following value to XXXX: (the value set with
WBI5) x 2 x (the ratio).

5 – 9

Adjustment values are set.
OK

Start measurement

Repeat until RGB
become the target
values.

LC-32D42U/LC-37D42U

PC Set

Adjust RB to the target xy values.
MG5RXXXX
MG5BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
*Gisfixed.
* The default adjustment value of RGB is the parameter value
of the WBI5 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Adjustment gradation setting (point 4 = 144 gradation adjustment*)
WBI40576

Pattern display

Adjustment values are set.
OK

Start measurement

Repeat until RGB
become the target
values.

Correction of G value
MG4GXXXX
When G is changed at gradation 6, calculate the ratio of the
change and set the following value to XXXX: (the value set with
WBI4) x 2 x (the ratio).

Adjustment values are set.
OK

Adjust RB to the target xy values.
MG4RXXXX
MG4BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
*Gisfixed.
* The default adjustment value of RGB is the parameter value of

the WBI4 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Adjustment gradation setting (point 3 = 116 gradation adjustment*)
WBI30464

Pattern display

Adjustment values are set.
OK

Correction of G value
MG3GXXXX
When G is changed at gradation 6, calculate the ratio of the
change and set the following value to XXXX: (the value set with
WBI3) x 2 x (the ratio).

Adjustment values are set.
OK

5 – 10

LC-32D42U/LC-37D42U

Start measurement

Repeat until RGB
become the target
values.

PC Set

Adjust RB to the target xy values.
MG3RXXXX
MG3BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
* G is fixed.
* The default adjustment value of RGB is the parameter value of
the WBI3 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Adjustment gradation setting (point 2 = 66 gradation adjustment*)
WBI20264

Pattern display

Adjustment values are set.
OK

Correction of G value
MG2GXXXX
When G is changed at gradation 6, calculate the ratio of the
change and set the following value to XXXX: (the value set with
WBI2) x 2 x (the ratio).

Start measurement

Repeat until RGB
become the target
values.

Adjustment values are set.
OK

Adjust RB to the target xy values.
MG2RXXXX
MG2BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
* G is fixed.
* The default adjustment value of RGB is the parameter value of
the WBI2 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Adjustment gradation setting (point 1 = 50 gradation adjustment*)
WBI10200

Pattern display

Adjustment values are set.
OK

Correction of G value
MG1GXXXX
When G is changed at gradation 6, calculate the ratio of the
change and set the following value to XXXX: (the value set with
WBI1) x 2 x (the ratio).

5 – 11

Adjustment values are set.
OK

Start measurement

Repeat until RGB
become the target
values.

LC-32D42U/LC-37D42U

PC Set

Adjust RB to the target xy values.
MG1RXXXX
MG1BXXXX
* XXXX indicates the adjusted values between 0000 and 1023
(4 digit decimal number with zero fill).
* G is fixed.
* The default adjustment value of RGB is the parameter value of
the WBI1 command multiplied by 2.

The adjustment value is
reflected in the image.

Adjustment values are set.
OK

Writing of adjusted values
MSET0003

Writing is complete.
OK

Deleting adjustment patterns
MSET0000

Deletion is complete.
OK

Completion of adjustment

2.7. Factory settings

After making the factory settings, pull off the AC cord.

NOTE: Do not turn on the power once the factory settings have been made. Otherwise the factory settings must be made again.

Adjustment item Adjustment conditions Adjustment procedure

1 Factory settings Finally pull off the AC cord. • Move the cursor to the [INDUSTRY INIT (+Cause)] line.

Using the [VOL+/-] keys, set this item ON and press the
[ENT] key.
The version confirm window appears on the green
screen. When [SUCCESS] appears at the top, the fac­tory settings are complete. (If an error occurs. [ERROR]
appears on the red screen.)

• Finally turn off the AC power.

The following settings are returned to the factory ones.

1) User settings

2) Channel data (broadcast frequencies, etc.)

3) Password setting

4) Operation time

5) Automatic installation flag

6) V-CHIP block setting

2.8. Software version

Change of software version is notified at a technical report.

* Main microprocessor

* Monitor microprocessor

* EDID data (HDMI/analog RGB)

5 – 12

LC-32D42U/LC-37D42U

2.9. Menu list in process A mode

Page Line Item Explanation

1 MAIN Version Main microcomputer software version

BOOT Version
Monitor Version Monitor microcomputer software version
EQ DATA CHECKSUM Sound parameter checksum
TEMPERATURE Read value of temperature sensor
LAMP ERROR Number of lamp error
NORMAL STANDBY CAUSE Reasons of standby at normal time
ERROR STANDBY CAUSE Reasons of standby in the event of error

2 INDUSTRY INIT (+Cause) Initialization to factory settings (including clearing Standby Cause data)

INDUSTRY INIT Initialization to factory settings
HOTELMODE Activate/deactivate the hotel mode
Center Acutime Main microcomputer operating time
RESET Reset main microcomputer operating time

Lamp error rest
BacklightAcutime Backlight lighting time
RESET Reset backlight lighting time
LAMP ERROR RESET
VIC XPOS x-coordinate for reading image data
VIC YPOS y-coordinate for reading image data
VIC COLOR Specification of color for reading image data
VIC SIGNAL TYPE Specification of signal for reading image data
VIC READ On/Off of image data read operation

3 N358 ALL ADJ Auto adjustment of NTSC and TUNER signals

N358 MAIN ADJ Auto adjustment of NTSC signal
TUNER DAC ADJ Auto adjustment of TUNER
N358 CONTRAST A_GAIN NTSC analog gain adjustment
N358 CONTRAST D_GAIN NTSC digital gain adjustment
TUNER A DAC TUNER DAC adjustment

4 TUNER VCHIP TEST(69ch) Execute TUNER TEST

TUNER VCHIP TEST(7ch)
TUNER VCHIP TEST(10ch)
TUNER VCHIP TEST(15ch)

5 COMP15K MAIN ADJ Auto adjustment of component 15k

COMP15K Y A_GAIN Component 15k Y analog gain adjustment
COMP15K Cb A_GAIN Component 15k Cb analog gain adjustment
COMP15K Cr A_GAIN Component 15k Cr analog gain adjustment
COMP15K Y D_GAIN Component 15k Y digital gain adjustment
COMP15K Cb D_GAIN Component 15k Cb digital gain adjustment
COMP15K Cr D_GAIN Component 15k Cr digital gain adjustment
COMP15K Y OFFSET Component 15k Y offset adjustment
COMP15K Cb OFFSET Component 15k Cb offset adjustment
COMP15K Cr OFFSET Component 15k Cr offset adjustment

6 HDTV ADJ HDTV auto adjustment

HDTV Y A_GAIN HDTV Y analog gain adjustment
HDTV Cb A_GAIN HDTV Cb analog gain adjustment
HDTV Cr A_GAIN HDTV Cr analog gain adjustment
HDTV Y D_GAIN HDTV Y digital gain adjustment
HDTV Cb D_GAIN HDTV Cb digital gain adjustment
HDTV Cr D_GAIN HDTV Cr digital gain adjustment
HDTV Y OFFSET HDTV Y offset adjustment
HDTV Cb OFFSET HDTV Cb offset adjustment
HDTV Cr OFFSET HDTV Cr offset adjustment

7 ANALOG RGB Analog RGB adjustment

R CUTOFF R CUTOFF adjustment value
G CUTOFF G CUTOFF adjustment value
B CUTOFF B CUTOFF adjustment value
R DRIVE R DRIVE adjustment value

5 – 13

Page Line Item Explanation

7 G DRIVE G DRIVE adjustment value

B DRIVE B DRIVE adjustment value
ICSC MODE Color space converter mode switching

8 MONITOR GAMMA IN 1 White balance adjustment IN-Point1

MONITOR GAMMA IN 2 White balance adjustment IN-Point2
MONITOR GAMMA IN 3 White balance adjustment IN-Point3
MONITOR GAMMA IN 4 White balance adjustment IN-Point4
MONITOR GAMMA IN 5 White balance adjustment IN-Point5
MONITOR GAMMA IN 6 White balance adjustment IN-Point6
GAMMA WRITE Write adjustment values
GAMMA RESET Reset adjustment values

9 MONITOR GAMMA R 1 White balance adjustment OUT R-Point1

MONITOR GAMMA G 1 White balance adjustment OUT G-Point1
MONITOR GAMMA B 1 White balance adjustment OUT B-Point1
MONITOR GAMMA R 2 White balance adjustment OUT R-Point2
MONITOR GAMMA G 2 White balance adjustment OUT G-Point2
MONITOR GAMMA B 2 White balance adjustment OUT B-Point2
MONITOR GAMMA R 3 White balance adjustment OUT R-Point3
MONITOR GAMMA G 3 White balance adjustment OUT G-Point3
MONITOR GAMMA B 3 White balance adjustment OUT B-Point3
GAMMA WRITE Write adjustment values
GAMMA RESET Reset adjustment values

LC-32D42U/LC-37D42U

10 MONITOR GAMMA R 4 White balance adjustment OUT R-Point4

MONITOR GAMMA G 4 White balance adjustment OUT G-Point4
MONITOR GAMMA B 4 White balance adjustment OUT B-Point4
MONITOR GAMMA R 5 White balance adjustment OUT R-Point5
MONITOR GAMMA G 5 White balance adjustment OUT G-Point5
MONITOR GAMMA B 5 White balance adjustment OUT B-Point5
MONITOR GAMMA R 6 White balance adjustment OUT R-Point6
MONITOR GAMMA G 6 White balance adjustment OUT G-Point6
MONITOR GAMMA B 6 White balance adjustment OUT B-Point6
GAMMA WRITE Write adjustment values
GAMMA RESET Reset adjustment values

11 AUDIO SWITCH Select sound parameter data (ROM/EEP)

FORCED FLAT MODE
AIN1_ADC_VOLUME
AIN2_ADC_VOLUME
AIN3_ADC_VOLUME
AIN4_ADC_VOLUME
AIN5_ADC_VOLUME
AIN6_ADC_VOLUME

12 INPUT_MIXER_GAIN_SP

INPUT_MIXER_GAIN_HP
INPUT_MIXER_GAIN_EXT
INPUT_MIXER_GAIN_EXT_HP
OUTPUT_MIXER_GAIN
SUB_VOLUME_FLAT
SUB_VOLUME_EQ
SUB_VOLUME_AUDYSSEY

13 PEQ1_F0

PEQ1_Q
PEQ1_GAIN
PEQ2_F0
PEQ2_Q
PEQ2_GAIN
PEQ3_F0
PEQ3_Q
PEQ3_GAIN

5 – 14

LC-32D42U/LC-37D42U

Page Line Item Explanation

13 PEQ4_F0

PEQ4_Q
PEQ4_GAIN

14 PEQ5_F0

PEQ5_Q
PEQ5_GAIN
VIRTUALIZER_LEVEL
BASS_BOOST_LEVEL
SLICER_LEVEL
HPF_SW
HPF_LR
LPF_SW
SW_MIXING_LEVEL

15 BRIGHTNESS DA0

BRIGHTNESS DA1
BRIGHTNESS DA2
BRIGHTNESS DA3
BRIGHTNESS DA4
BRIGHTNESS DA5
BRIGHTNESS DA6
BRIGHTNESS DA7
BRIGHTNESS DA8
BRIGHTNESS DA9
BRIGHTNESS DA10
BRIGHTNESS DA11

16 BRIGHTNESS DA12

BRIGHTNESS DA13
BRIGHTNESS DA14
BRIGHTNESS DA15
BRIGHTNESS DA16
BRIGHTNESS DA17
BRIGHTNESS DA18
BRIGHTNESS DA19
BRIGHTNESS DA20
BRIGHTNESS DA21
BRIGHTNESS DA22

17 BRIGHTNESS DA23

BRIGHTNESS DA24
BRIGHTNESS DA25
BRIGHTNESS DA26
BRIGHTNESS DA27
BRIGHTNESS DA28
BRIGHTNESS DA29
BRIGHTNESS DA30
BRIGHTNESS DA31
BRIGHTNESS DA32

18 OPC33 ADLEVEL 0

OPC33 ADLEVEL 1
OPC33 ADLEVEL 2
OPC33 ADLEVEL 3
OPC33 ADLEVEL 4
OPC33 ADLEVEL 5
OPC33 ADLEVEL 6
OPC33 ADLEVEL 7
OPC33 ADLEVEL 8
OPC33 ADLEVEL 9
OPC33 ADLEVEL 10
OPC33 ADLEVEL 11

5 – 15

Page Line Item Explanation

19 OPC33 ADLEVEL 12

OPC33 ADLEVEL 13
OPC33 ADLEVEL 14
OPC33 ADLEVEL 15
OPC33 ADLEVEL 16
OPC33 ADLEVEL 17
OPC33 ADLEVEL 18
OPC33 ADLEVEL 19
OPC33 ADLEVEL 20
OPC33 ADLEVEL 21
OPC33 ADLEVEL 22

20 OPC33 ADLEVEL 23

OPC33 ADLEVEL 24
OPC33 ADLEVEL 25
OPC33 ADLEVEL 26
OPC33 ADLEVEL 27
OPC33 ADLEVEL 28
OPC33 ADLEVEL 29
OPC33 ADLEVEL 30
OPC33 ADLEVEL 31

21 V6 OS THERMO 1

V6 OS THERMO 2
V6 OS THERMO 3
V6 OS THERMO 4
V6 OS THERMO 5
V6 OS THERMO 6
V6 OS THERMO 7

LC-32D42U/LC-37D42U

22 V5 OS THERMO 1

V5 OS THERMO 2
V5 OS THERMO 3
V5 OS THERMO 4
V5 OS THERMO 5
V5 OS THERMO 6
V5 OS THERMO 7

23 MONITOR TIME OUT

MONITOR MAX TEMP
MONITOR STANDBY CAUSE

24 LCD TEST PATTERN

25 KEY LOCK(1217)

KOUTEI AREA ALL CLEAR
A MODE AREA CLEAR
BACKUP AREA CLEAR
B MODE AREA CLEAR
EXECUTION

26 EEP SAVE

EEP RECOVER
STANDBY CAUSE RESET
WB TEACHING MODE

5 – 16

LC-32D42U/LC-37D42U

2.10. Code list for Standby Cause

Code Indication Description

1 RC_STNBY /* Standby set by remote control */
2 E_CCKMVT /* Abnormal voltage of CCKM line detected */
5 OUT_OF_R “/* While a PC display is on, unspecified input continued long time. */”
6 NO_OPERT /* Off caused by no operation */
7 NO_SIGNA /* Off caused by no signal */
8 PC_MODE1 /* Set by the PC power management mode 1 */

9 PC_MODE2 /* Set by the PC power management mode 2 */
A SLEEP_TM /* Set by off timer */
B E_NOMONI /* Incompatible monitor is connected to the AVC center. */
C OFF_232C /* Set by the command from RS232C */
E AVC_TACT /* Set by the front switch at the AVC center */

F BSBOOKED /* The pre-set time has passed since TV was turned on from standby by the BS timer. */

10 E_AVCFAN /* Fan failure at the AVC center */
11 E_BSSUBM /* Communication failure with the BS sub microcomputer (Not used) */
12 E_CVICIC /* CVIC failure */
13 E_AVCTMP /* Abnormal temperature at the AVC center */
14 E_1BITAU /* 1Bit-AMP failure */
15 E_MONIPW /* Monitor main power failure detected */
16 E_MONITR /* Monitor problem detected */
17 E_FNLOCK /* Fan lock for North America */
40 /* Failure in Digital Standby */

5 – 17

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 6. TROUBLE SHOOTING TABLE

Service Manual

[1] TROUBLE SHOOTING TABLE

No audio output during UHF/VHF reception

Is SIF output from the tuner (TU1101_Pin15) normal? NO Check the tuner and peripheral circuits.

YES
Is input signal fed to pin 21 (SOUNDIF 1) of IC1401 (SIF Demod­ulator) normal?

YES
Are audio signals from pins 29 and 30 (SC2_OUTL/R) of IC1401

to pins 51 and 52 of IC1404 (CODEC) normal?

YES
Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1404 nor­mal?

NO Check the filter circuits (Q1102-3) and peripheral circuits.

NO Check between pins 29 and 30 (SC2_OUTL/R) of IC1401 and

NO

pins 51 and 52 of IC1404 (CODEC).

Are the DSP_LRCK, DSP_BCKIN, DSP_SDIN1, DSP_MCLK,
DSP_SDOUT1, DSP_SDOUT2 signals sent from IC1404 to
IC1407 (DSP) normally?

YES

YES

Is audio input from pins 38 and 39 of IC1404 to pins 3 and 5 of
IC2701(STEREO_AMP) normal?

YES
Is audio output from IC2701 normal? NO Check IC2701 and peripheral circuits.

YES
Check the connector (P2703) of AV_UNIT and around the speak­ers.

No monitor audio output

Is monitor audio output set to “Variable”? YES Reset monitor audio output to “Fixed”.

NO

Are audio output pins 40 and 41 of IC1404 (CODEC) normal? NO Check IC1404 and peripheral circuits.

YES
Are audio output pins 7 and 1 of IC1408 (Buffer_AMP) normal? NO Check IC1408 and peripheral circuits.

NO Check the circuits between pins 38 and 39 of IC1404 and pins 3

Check IC1404 and peripheral circuits.

and 5 of IC2701. (MUTE circuits: Q1307, Q1314, Q1313)

YES
Check between IC1408 and MONITOR OUTPUT terminal (J501,
J502).

6 – 1

LC-32D42U/LC-37D42U

No audio output from external input

<<HDMI>> [INPUT-4/INPUT5 (Digital audio mode)]
Is digital audio signal (DTV_SPDIF) fed from pin E12 of IC8101 to pin 4 of IC1404?
<<HDMI>> [INPUT-5 (Analog audio mode)]
Is L-ch audio signal fed from pin 3 of input terminal J1501 to pin 57 of IC1404?
Is R-ch audio signal fed from pin 2 of input terminal J1501 to pin 58 of IC1404?
PCINPUT<<INPUT-6>>
Is L-ch audio signal fed from pin 2 of input terminal J1502 to pin 55 of IC1404?
Is R-ch audio signal fed from pin3 of input terminal J1502 to pin 56 of IC1404?
<<INPUT-1>>
Is L-ch audio signal fed from input terminal J505 to pin 12 of IC1405?
Is R-ch audio signal fed from input terminal J505 to pin 1 of IC1405?
<<INPUT-2>> <<INPUT-3>>
Is L-ch audio signal fed from input terminal J509 to pin 14 of IC1405? Is L-ch audio signal fed from input terminal J508 to pin 15 of IC1405?
Is R-ch audio signal fed from input terminal J509 to pin 5 of IC1405? Is R-ch audio signal fed from input terminal J508 to pin 2 of IC1405?
Is L-ch audio fed from pin 13 of IC405 to pin 53 of IC1404?

Is R-ch audio fed from pin 3 of IC405 to pin 54 of IC1404?

YES

No audio output during digital broadcasting reception

Are the I2S signals DAKCK, SCLK, LRCK, and
DATAOUT sent from pins B22, F13, E13 and F12 of
IC8101 normally?

NO

Check around IC8101 BCM3551.

YES

Are input signals of pins 24 (DAKCK), 11 (SCLK), 10
(LRCK), 32 (DATA) of IC1404 normal?

YES
Are audio signals from pins 29 and 30 (SC2_OUTL/R) of
IC1404 to pins 27 and 25 of IC1407 (DSP) normal?

YES
Are audio outputs (A-OUT_L/R) of pins 38 and 39 of IC1404
normal?

YES

Is audio input from pins 38 and 39 of IC1404 to pins 3 and 5 of
IC2701(STEREO_AMP) normal?

YES
Is audio output from IC2701 normal? NO Check IC2701 and peripheral circuits.

YES
Check the connector (P2703) of AV_UNIT and around the
speakers.

NO Check the circuits between pins B22, F13, E13 and F12 of IC8101

and pins 24, 11, 10 and 32 of IC1404.

NO Check between pins 29 and 30 (SC2_OUTL/R) of IC1404 and pins

27 and 25 of IC1407 (DSP).

NO Are the LRCK, BICK, SDTO and SDTI signals sent from IC1404 to

IC1407 (DSP) normally?

YES

Check IC1403 and peripheral circuits.

NO Check the circuits between pins 38 and 39 of IC1404 and pins 3 and

5 of IC2701. (MUTE circuits: Q1307, Q1313, Q1314, Q1404)

6 – 2

LC-32D42U/LC-37D42U

<Component video signal input> No video output (1)

No video output from external input <<INPUT-1>> Select INPUT-1 and the input signal on the input switching menu

screen.

Is INPUT-1 selected on the input switching menu screen? NO When INPUT-1 cannot be selected since the characters INPUT-1

on the menu screen are gray.

Is the video signal detection function normal?

YES

Is video signal fed to pin 21 of IC501 (AV SWITCH)? NO Check between J507 and pin 21 of IC501.

YES

Is video signal sent to pin 60 of IC501? NO Check IC501 (AV SWITCH) and peripheral circuits.

YES

Is video signal sent to pin 2 of IF_UNIT connector (FC_SC501)? NO Check between IC501 and SC501. (Q501, Q502, etc.)

Check between J507 and pin 38 of IC501.

YES
Is video signal fed to pin 2 of MAIN_UNIT connector
(FC_SC1101)?

YES
Is video signal fed to pin K25 of IC8101 (Broadcom) via L.P.F.
composed of Q2202 and Q2210?

YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48

of IC2602?

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

NO Check the board-to-board cable “FC”.

NO Check between IC501 and IC3301. (Q2202, Q2210, etc.)

NO Check IC2602 and peripheral circuits.

NO Check IC8101 and peripheral circuits.

6 – 3

LC-32D42U/LC-37D42U

<Composite video signal/S-video signal input> No video output (2)

No video output from external input <<INPUT-2>> Select INPUT-2 and the input signal on the input switching menu

screen.

Is INPUT-2 selected on the input switching menu screen? NO When INPUT-2 cannot be selected since the characters INPUT-3

on the menu

Is the video signal detection function normal? Check between
J503 and pin 42 of IC501.

Is the S-video signal detection function normal? Check between

YES
Is signal fed to each input terminal of IC501 (AV SWITCH)?
<Composite video signal input>

Is video signal fed to pin 3 of IC501?

NO Check between J509 and pin 3 of IC501.

J509 and pin 2 of IC501.

<S-video signal input>
Are Y and C signals fed to pins 5 and 7 of IC501 respectively?

YES
<Composite video signal input>
Is video signal sent to pin 60 of IC501?
<S-video signal input>

Are Y and C signals sent to pins 60 and 59 of IC501 respec­tively?

YES
<Composite video signal input>
Is video signal sent to pin 2 of IF_UNIT connector (FC_SC501)?

<S-video signal input>
Are Y and C signals sent to pins 2 and 4 of IF_UNIT connector
(FC_SC501) respectively?

YES
<Composite video signal input>

Is video signal fed to pin 2 of MAIN_UNIT connector
(FC_SC1101)?
<S-video signal input>
Are Y and C signals fed to pins 2 and 4 of MAIN_UNIT connector
(FD_SC1101) respectively?

YES
<Composite video signal input>
Is video signal fed to pin K25 of IC8101 (Broadcom) via L.P.F.

composed of Q2202 and Q2210?
<S-video signal input>
Are Y and C signals fed to pins k25 and L24 of IC8101 (Broad­com) via L.P.F. composed of Q2202 and Q2210 and via L.P.F.
composed of Q2203 and Q2211 respectively?

NO Check between J503 and pins 5 and 7 of IC501.

NO Check IC501 (AV SWITCH) and peripheral circuits.

NO Check between IC501 and SC501. (Q501, Q502, Q503, Q504,

etc.)

NO Check the board-to-board cable “FC”.

NO Check between SC1101 and IC3301. (Q2202, Q2210, etc.)/

(Q2203, Q2211, etc.)

YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48
of IC2602?

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

NO Check IC2602 and peripheral circuits.

NO Check IC8101 and peripheral circuits.

6 – 4

LC-32D42U/LC-37D42U

No video output during ANALOG broadcasting reception

Is video signal sent to output terminal pin 13 of tuner (TU1101)? NO Check or replace the tuner's peripheral circuits.

YES
Is video signal fed to pin 7 of IC1103 (LEVEL ADJ)? NO Is control signal for level adjustment fed from pin 1 of IC1104 to

YES

Is video signal fed to pin R26 of IC8101 (Broadcom) via L.P.F. composed of Q2204 and Q2208?

YES

Are digital video (LVDS) signals sent from pins 37-42 and 45-48
of IC2602?

NO Check IC2602 and peripheral circuits.

pin 6 of IC1103?

NO

Check or replace IC1104 (CONTROL) and peripheral circuits.

NO

Check between IC1103 and IC3301. (Q2204, Q2208, etc.)

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

NO Check IC8101 and peripheral circuits.

6 – 5

LC-32D42U/LC-37D42U

<Component video signal input> No video output (3)

No video output from external input <<INPUT-1>>

Is INPUT-1 selected on the input switching menu screen? NO Select INPUT-1 and the input signal on the input switching menu

screen.

When INPUT-1 cannot be selected since the characters INPUT-1
on the menu screen are gray.

Is the component video signal detection function normal? Check
between 6 pin of J507 and pin 38 of IC501.

YES
Are component video signals fed to pins 21, 23 and 25 (Y, PB
and PR) of IC501(AV SWITCH)?

YES
Are Y, PB and PR signals sent to pins 60, 59 and 58 of IC501
respectively?

YES
Are component video signals sent to pins 2, 4 and 6 of IF_UNIT

connector (FC_SC501)?

NO Check between J507 and each input pin of IC501.

NO Check IC501 and peripheral circuits.

NO Check between IC501 and SC501. (Q501-Q506, etc.)

YES
Are component video signals fed to pins 2, 4 and 6 of
MAIN_UNIT connector (FC_SC1101)?

YES
Are Y, Pb and Pr signals fed to pins L26, J25, J26 of IC8101
(Broadcom) respectively?

YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48

of IC2602?

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

NO Check the board-to-board cable “FC”.

NO Check between SC1101 and IC8801. (Q2210, Q2211, Q2212,

etc.)

NO Check IC2602 and peripheral circuits.

NO Check IC8101 and peripheral circuits.

6 – 6

No video output from HDMI input (INPUT4)

LC-32D42U/LC-37D42U

INPUT4
Are signals fed from HDMI (SC1501) connector to input terminals
H_RX0± (pins 70 and 71), H_RX1± (pins 73 and 74), H_RX2±

(pins 76 and 77) and H_RXC± (pins 67 and 68) of IC1507
(TMDS_SW)?

YES
Are signals fed from IC1507 (TMDS_SW) to input terminals
H_RX0± (pins B19 and A19), H_RX1± (pins A18 and B18),

H_RX2± (pins D18 and C18) and H_RXC± (pins C19 and D19)
of IC8101 (Broadcom)?

YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48
of IC2602?

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

NO

NO Check IC1507 (TMDS_SW) and peripheral circuits.

NO Check IC2602 and peripheral circuits.

NO Check IC8101 and peripheral circuits.

Is IC1501 (E
device and is DDC_I2C_CLOCK/DATA data read out?

Check the setting of HDMI device.

For INPUT3, pin 21 is Low and pin 22 is High.

2

PROM) accessed with I2C when connecting HDMI

Check IC1501 and peripheral circuits.
Are cables connected securely?

YES

NO

When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest
HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware.
Download the latest firmware from the web site of each manufacturer, or contact the customer service center of each manufacturer.

6 – 7

LC-32D42U/LC-37D42U

No video output from HDMI input (INPUT5)

INPUT5
Are signals fed from HDMI (SC1502) connector to input terminals
H_RX0± (pins 8 and 9), H_RX1± (pins 11 and 12, H_RX2± (pins

14 and 15) and H_RXC± (pins 5 and 6) of IC1507 (TMDS_SW)?

YES

Are signals fed from IC1507 (TMDS_SW) to input terminals
H_RX0± (pins B19 and A19), H_RX1± (pins A18 and B18),
H_RX2± (pins D18 and C18) and H_RXC± (pins C19 and D19)
of IC8101?

YES
Are digital video (LVDS) signals sent from pins 37-42 and 45-48

of IC2602?

Are digital video (COMOS) signal sent from IC8101 (DVODATA 0
~ 23, DVOCLKO, DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest
HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware.
Download the latest firmware from the web site of each manufacturer, or contact the customer service center of each manufacturer.

NO

NO Check IC1507 (TMDS_SW) and peripheral circuits.

NO Check IC2602 and peripheral circuits.

NO Check IC8101 and peripheral circuits.

Is IC1502 (E
device and is DDC_I2C _CLOCK/DATA data read out?

Check the setting of HDMI device.

For INPUT5, pin 21 is High.

2

PROM) accessed with I2C when connecting HDMI

NO
Check IC1502 and peripheral circuits.
Are cables connected securely?

YES

6 – 8

No video output from PC input (INPUT 6)

DIGITAL mode Analog mode
IS IC1505 (E2PROM) accessed with I2C when connecting PC and is
DDC_I2C_CLOCK/DATA data read out?

LC-32D42U/LC-37D42U

Are signal fed from pins 1, 2, 3 (Analog-R/G/B), and 13,
14 (H Sync/V Sync) of input terminal (SC1503) to pins
11, 10, 8, 2, 3 of IC3304 (A/DC)?

NO
Check IC1505 and periph­eral circuits. Are cable con-

YES

Check the setting of PC.

Are signals from pins 83~76, 62~55, 50~43, 71~68. (DATA0~23, VSYNC, HSYNC, DE, CLK) of IC3304 (ADC) to pins B23, A23, D22, C22, E23,
A25, D23, B24, F22, A24, C23, E22, D17, F18, E18, F17, E17, C17, B17, A17, C16, D16, F16, E16 of IC8101?

YES
Are digital video (LVDS) signals sent from pins
37-42 and 45-48 of IC2602?

Are digital video (COMOS) signal sent from
IC8101 (DVODATA 0 > 23, DVOCLKO,
DVODE, DVOHSYNC, DVOVSYNC)?

YES
Check LCD_CONTROL PWB.

When using an old HDMI transmission device, some video formats cannot be selected or no sound is heard. Since this model conforms to the latest
HDMI standard, the HDMI transmission device does not recognize the data of the latest version correctly. It is necessary to upgrade its firmware.
Download the latest firmware from the web site of each manufacturer, or contact the customer service center of each manufacturer.

nected securely?

Check connection of IC3304 and IC8101.

NO Check IC2602 and peripheral circuits.

NO

Check IC8101 and peripheral circuits.

Check peripheral circuits of IC3304.

YES

NO

NO

[FRONT-END SECTION]
Digital broadcasting cannot be received.

Are IF_OUT_P/N signal send from pin
(20), (19) of TU1101 respectively?

NO NO

Check the TU1101. Check between TU1101 and

YES Are signal fed to pins U25, U26 of

IC8101?

IC8101 (C1104, C1141, etc).

YES Check IC8101 and its peripheral cir-

cuits.

6 – 9

LC-32D42U/LC-37D42U

1sec

250ms

LED flashing timing chart for error notification

1) Red power LED Remarks

Pins are monitor microprocessor pins.

L_FL_ERR (pin 73): Abnormal L. Confirmed after 5 consecutive detections at 1 second intervals (detected only when the backlight is on).

H: On

Error type Power red LED operation (1 cycle)

Note that after five detection counts, the lamp cannot be activated except in the monitoring process. (For the first time, only the inverter is reset, and error OFF is not activated)

Accumulated counts are cleared to 0 when the corresponding setting in the process A is made, when the power is turned on with [CH_DOWN] and [VOL_UP] on the unit down or after continuous illumination for 3 minutes.

Refer to "Power failure details".

L: Off

H: On

Lamp failure

Flashes once: Fast

L: Off

Power failure

Flashes twice

Refer to "Communication failure details".

Communication line failure or main CPU communication failure > Check debug statements for the main CPU.

H: On

communication failure

with main CPU

L: Off

Flashes 3 times

VSYNC (pin 48) failure (uninput). Trident_IC operation failure.

H: On

Vsync

failure

(MONITOR MAX TEMP on process A mode: Change of temperature failure AD value): Thermistor

Detected during operation (interruption)

If the panel temperature is 60°C or more for 15 seconds or more in a row, CAUTION appears on the OSD of AVC (flashes in red in the lower right screen).

If the panel temperature is 60°C or more for 25 seconds or more in a row, error standby is activated.

L: Off

H: On

L: Off

Flashes 4 times

Monitor temperature failure

Flashes 5 times

Pins are monitor microprocessor pins unless otherwise specified.

AC_DET (pin 16): Abnormal (L), DET_10V (pin 57). Main converter 13V/UR10V is not applied.

Remarks

H: On

Error type Power red LED operation (1 cycle)

2) Power failure details (Power LED flashes twice and OPC LED flashes)

PS_ON

If error is detected during operation, the power is turned on again by interrupt handling (instantaneous blackout processing).

DET_3V3 (pin 59): Abnormal (L). Main power 3.3V is not applied.

L: Off

H: On

13V/UR10V failure

Flashes once

EU_POW

6 – 10

If error is detected during operation, error standby is activated by polling.

L: Off

Main 3.3V failure

Flashes twice

DET_6V (pin 56): Abnormal 㧔L). UR6V is not applied.

H: On

L: Off

UR6V failure

D_POW

DET_D3V3 (pin 59): Abnormal 㧔L). Digital 3.3V is not applied.

If error is detected during operation, error standby is activated by polling.

H: On

Flashes 3 times

D_POW

If error is detected during operation, error standby is activated by polling.

DET_PNL5V (pin 58): Abnormal (L). Panel power is not applied.

L: Off

H: On

Digital 3.3V failure

Flashes 4 times

PANEL_POW

If error is detected during operation, error standby is activated by polling.

L: Off

Panel 5V failure

Flashes 5 times

The details are displayed in "ERROR STANDBY CAUSE" on page 1 of process A mode for the main microprocessor.

Main microprocessor detection error (FAN error, 1bitAMP error, etc.㧕

H: On

L: Off

Main failure

Flashes 7 times

Basically, communication logs are analyzed by a bus monitor or debug print logs are analyzed.

Remarks

H: On

Error type Power red LED operation (1 cycle)

3) Communication failure details (Power LED flashes 3 times and OPC LED flash

Initial communication from the main CPU is not received. (After canceling the reset, request for the monitor model No. is not received.)

ψ Communication line failure or main CPU start-up failure

Time-out setting and start-up mode change cannot be received from the main CPU. (Start-up communication until time-out setting and start-up mode change is not received.)

ψ Main CPU start-up failure or monitor microprocessor's reception failure

L: Off

H: On

Initial communication

reception failure

Flashes once

Time-out setting reception failure

Start-up confirmation reception failure

Regular communication that is performed at 1 second intervals in the normal operation is interrupted.

L: Off

H: On

Flashes twice

Regular communication failure

ψ Main CPU operation failure or monitor microprocessor's reception failure

L: Off

Flashes 3 times

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 7. MAJOR IC INFORMATIONS

Service Manual

[1] MAJOR IC INFORMATIONS

• IC8101 (RH-iXB870WJQZQ)

This IC is a system LSI with the following function.

A cable, ground wave receiver, NTSC decoder, HDMI receiver, transport processor, MPEG video processor, digital audio decoder, analog video
processor, graphics processor, MLPS processor, and Peripheral controller.

7 – 1

LC-32D42U/LC-37D42U

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CHAPTER 8. OVERALL WIRING/BLOCK DIAGRAM

Service Manual

[1] OVERALL WIRING DIAGRAM

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LC-32D42U/LC-37D42U

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8 – 4

LC-32D42U/LC-37D42U

MAIN Unit (Side-A)

LC-32D42U/LC-37D42U

CHAPTER 9. PRINTED WIRING BOARD ASSEMBLIES

Service Manual

[1] MAIN Unit

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D

C

B

A

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9 – 1

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

9 – 2

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9 – 3

LC-32D42U/LC-37D42U

J1502

FB1502

FB1501

C1502

C1501

R1504

C1505

R1503

C1507

R1515

R1508

R1514

R1509

C1510

C1509

LUG1108

R1180

R1179

FB1504

C1504

R1507

R1518

C1512

C1506

R1510

C1508

R1512

J1501

C1511

C1503

R1506

R1517

FB1503

P9003

R9016

R9017

R9027

R9028

R9029

P1103

R1311

IC1304

D1306

C1310

R1333

C1313

Q1312

L1301

TP9108

C1312

C1311

D9002

C9102

R9104

R9109

R9106

P9005

D9003

R9007

D9004

R9101

C9105

R9004

R9114

R9110

R9116

SC8701

P9704

R8719

R8720

R8704

R8703

R8705

SC8401

FB8401

C8405

C8406

P8401

VA8401

R8405

R8404

VA8402

IC8402

FB8402

C8404

R8403

LUG1101

SC1102

R1102

R9015

C8707

R8730

C8706

P9101

R9107

R9112

C9101

C9103

R2025

R9111

R9131

P2001

R2068

C9104

R9102

R9103

R9105

IC9101

R9124

TU1101

TP2002

C9106

R9122

R9108

TP2001

R9130

TP2003

C9107 C9108

R2010

R9113

R9305

TP9110

TP2004

TP9111

TP2009

TP2005

R9215R9216

P9201

R9309 R9308

P9301

D2003

R2041

R9311

R9312

R9320

R9321

FL9303

FL9304

R9318

R9327

R9328

FL9301

R9325

C9301

R9322

FL9305

R9329

IC9301

SC8101

R9330

FL9306

R9323

303

324

71

R8144

R8169

TP9202

R9310

R9314

R9201

R9212

R9202

P9202

TP9201

R9211

R9210

R9204

R9207

R9208

TP8116

R9205

TP9203

R9206

R9115

R9818

TP2204

C2233

R2255

R2231

R2222

R2233

R2238

Q2208

R2225

C1145

C2205

R1170

R1171

C2210

L2202

R1115

C1135

C2202

C1155

C1156

R2217

R1175

R1122

R1176

Q2204

R2214

R1127

R2201

R2206

C1122

Q1102

R1132

Q1103

R1196

R1129

TP2203

R2260

R1133

R1106

C1127

R1131

R1160

R1130

R2234

R2259

R2232

R2250

R2258

TP2202

Q2213

C2216

R2256

R1165

R2249

R2245

R2257

TP8115

R2248

R2244

TP8119

R2254

R1110 R2223

TP8114

R2224

TP8117

R2243

R2239

R1105

Q2207

R2226

Q2209

R1111

C2206

R2228

C2211

L2201

C2207

C2203

C2212

L2203

C2204

R2218

R2219

Q2201

R2215

Q2205

R2216

R2202

R2207

R2203

R2208

TP1101

R1414

R1426

C1420

L1401

C1463

C1421

C1464 R1470

C1465

R1472

C1467

C1462

R1413

C1466

C1432

C1403

R1425

C1405

R1417

Q1401

Q1402

R1424

R1431

R1429

R1433

R1430

R1428

C1430

R1432

C1431

R1447

C1450

C1451

C1474

Q1311

C9003

IC9002

R1332

Q1308

R1317

R9014

C1106 C1119

C1109

C1410

Q1314

R1329

R1342

C1124

SC1101 SC1301

FD1

D1309

C1306

D1310

LUG1102

D1308

D1312

D1314

D1303

R1448

D1307

R1323

D1313

Q1304

C1302

R1310

R1309

C1425

R1434

C1426

R1401

P1401

R1409

FB1401

FB9707

C1460

C1459

R1469

X1402

R1463

C1458

C9713

R1462

IC1407

C1461

R1461

IC9703

C9718

P9702

R9614

C9614

Q9602

C9617

L9602

C9613

C9620

C9621

C9622

R9617

D9605

R9628

D9607

D9606

R9624

D9603

P9701

R9615

D9602

C9631

L9601

C9619

C9618

R1178

LUG1105

LUG1107

R1177

FB2608

R2625

R2624

P2603

R2623

10 11 12 13 14 15 16 17 18 19

9 – 4

LC-32D42U/LC-37D42U

MAIN Unit
(Side-B)

H

G

F

E

D

C

B

A

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9 – 5

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

9 – 6

LC-32D42U/LC-37D42U

MAIN Unit
(Side-B Chip)

TL1128

TL1129

TL1131

TL1133

TL1135

TL1130

TL1132

TL1134

TL1136

TL8402

R8407

Q8401

TL8409

C8403

C8402

TL8406

IC8401

R8402

TL8408

R8406

R8401

TL8401

R8409

TL8411

TL8404

TL8412

C8401

R8408

TL8403

TL8405

C8711

R8722

R8723

R8724

R8725

R8727

R8721

R8729

C8710

R8726

C8709

TL8709

R8708R8713

TL8714

R8728

IC8702

R8711

TL8701

C8708

TL8702

FB8702

R8702

TL8703

FB8701

TL8704

C8702

R8710

C8704

TL8705

C8703

C8705

IC8701

R8707

TL8713

TL8706

TL9104

R8706

R8709

C8701

TL8707

TL8708

TL8710

TL8711

TL8712

TL9042 TL9041

TL9040

TL9039

TL1543

TL1303

TL1304

C1107

FB1101

FB1102

FB1103

TL1120

TL1302

TL1178

TL1124

TL1125

Q8451

R8451

D8451

TL1177

FL9001

FL9002

FL9003

FL9004

FL9005

FB9006

FB9007

Q8452

TL9025

TL9027

TL9029

TL9031

TL1538

R8452

TL9024

TL9026

TL9028

TL9030

TL9032

R8453

R8469

FB9005

TL1540

TL9332

TL1539

TL9333

TL9334

C8454

TL9335

R9306

TL9354

TL9355

TL9353

TL9352

TL9351

TL9350

TL9349

TL9348

TL93

TL9

T

TL93

IC8

TL9320

TL9319

TL9318

TL9382

TL9310

TL8457

TL8452

C2009

C2011

TL9232

TL9233

TL9218

R9218

TL9217

R9214

TL9231

TL9219

TL9216

TL9215

R9219

R2018

TL9230

TL9229

TL9214

R2020

TL9228

TL9213

X2001

TL9227

TL9212

R2079

TL9226

TL9211

R9217

R9213

TL9225

R2078

X2002

TL9220

TL9209

TL9210

R2026

R2027

R2028

R2034

R2036

R2049

TL2009

R2067

TL2006

R2047

C2016

R2046

R2048

R2003

R2039

R2071

R2050

R2070

R2016

C2010

Q2006

Q2001

C2002

C2001

R2007

R2040

Q2007

R2035

IC2001

R2052

C2014

C2012

IC2008

R2076

R2051

C2003

C2015

R2017

R2023

R2024

C2008

TL2007

C2026

R2030

C2005

R2009

R2038

R2037

R2012

R2056

C2004

TL2012

TL2001

R2008

R2019

IC2002

R2055

TL2008

R2022

R2015

R2054

R2021

R2042

R2014

R2045

R2032

R2033

R2002

R2031

C2030

Q2002

C1102

R2057

IC2007

R2043

IC2009

TL2010

C2023

R2004

Q2003

TL2014

R2029

R2058

R2069

C2024

R2011

C2018

TL2013

R2063

C2017

R2005

IC1105

R2059

R2062

R2013

R2053

TL2011

R2066

C2022

IC2006

IC2003

R2060

R2061

C1104

R2064

C2019

C1108

C2021

R2065

R2044

C2013

C2020

TL8456

TL8451

C2025

IC2004

TL9105

IC2005

IC1101

TL9103

TL9102

TL9101

C1103

C1105

R2006

R2001

TL1102

R8701

R8712

R8714

R8715

R8716

R8717

R8718

R1136

TL1144

TL1138

TL1140

TL1142

TL1127

TL1147

TL1151

TL1156

TL1158

TL1160

TL1162

TL1168

TL1171

TL1173

TL1170

TH2001

TL1137

TL1139

TL1141

TL1143

TL1145

TL1149

TL1153

TL1155

TL1157

TL1159

TL1161

TL1163

TL1169

TL1172

TL1174

TL1301

TL1305

TL1321

TL1326

TL1324

TL1319

TL1176

TL1320

TL1318

TL1329

TL1327

TL1325

TL1331

TL1316

TL1175

TL1323

TL1322

TL1330

TL1328

R1330

C1309

R1318

TL1150

Q1313

R1466

Q1307

Q1310

R1331

R1327

Q1303

TL1146

TL1148

TL1152

TL1154

Q1306

R1457

R1328

C1472

C1307

R1315

R1314

R1334

R1326

C1303

R1325

R1450

R1455

IC1408

R1439

R1458

R1460

R1440

C1439

C1449

C1437

C1440

C1441

C1443

C1444

C1447

IC1104

R1452

C1436

R1451

C1473

R1454

R1108

C1115

R1135

R1465

R1456

C1471

R1446

C1116

R1107

TL1101

C1433

TL1166

R1125

C1435

C1434

IC1403

R1453

C1438

TL1164

C1118

R1449

IC1103

C1424

C1470

R1443

R1422

C1427

R1423

C1469

R1441

C1448

R1442

R1438

C1101

R1101

R1437

C1468

C1429

IC1404

R1435

R1436

C1442

C1452

R1427

C1428

TP1402

IC1405

R1420

TP1401

R1421

C1422

R1467

C1446

R1415

C1423

R1416

C1402

C1406

C1401

R1403

TL1103

C1404

R1464

C1407

TL1104

R1404

C1408

R1405

C1409

IC1401

TL1105

R1408

R1406

R1459

C1411

C1453

TL1106

R1471

R1410

C1412

C1414

C1454

R1445

C1415

TL1107

R1412

IC1406

R1444

C1417

R1411

C1445

C1456

C1419

TL1108

C1413

C1418

C1455

C1416

TL1109

C1457

TL1110

R2204

R2210

R2212

R2205

TL1111

R2221

Q2202

TL1112

Q2206

R2237

R2213

TL1113

C2229

C2226

R2235

R9606

C2214

L2205

C2232

C2201

TL1114

R9604

C9602

C2209

C2227

C2230

R2227

Q2212

C9603

L2206

TL1115

R9605

Q9604

Q9601

R9602

R9601

R9626

TL9604

C9605

TL1116

R2251

R2252

R2242

R2230

R9627

Q2210

R9607

R9619

C9606

R9608

C9601

R9603

R2263

TL1117

Q9705

R9609

R2266

R2240

R9622

TP2201

R2247

R2246

TL1118

Q9603

R2261

D9601

R2211

R2209

TL1119

C9629

R2262

R2220

C9624

TL1121

Q2203

R2236

IC9602

TL1122

C2228

TL1126

R9625

L2204

TL1123

C2215

R9611

C2231

R2253

R9610

Q2211

R2229

C9604

R9612

C2213

R2241

C2208

R2264

TL9720

R2265

C9707

R9702

R9701

FB9703

TL9705

C9607

TL9709

TL8407

IC9701

TL9701

FB9704

TL9710

TL9716

C9708

FB9712

R9712

R9713

TL9715

FB9705

TL9601

TL9717

C9611

TL9711

FB9711

IC9601

TL9702

C9609

FB9713

TL9708

C9610

C9612

R9613

FB9701

TL9718

TL9712

IC9705

C9714

R9705

C9717

FB9708

TL9706

FB9709

TL9723

D9701

TL9713

R9714

TL9703

Q9701

FB9710

R9715

C9711

R9704

TL9719

FB9702

D9702

Q9702

TL9707

TL9714

C9710

TL9722

FB9706

IC1402

R1407

TL1401

TL1405

R1402

TL1402

TL1403

TL1404

C1301

R1301

R1322

R1324

IC1301

Q1305

R1302

X1401

R1306

R1304

Q1301

R1303

R1307

D1305

D1304

C1308

R1305

R1339

IC1302

R1308

R1338

R1341

Q1309

Q1302

R1340

D1301

D1302

D1311

R1335

R1312

R1313

R1337

C1304

IC1303

R1319

C1314

R1320

C1305

R1316

R1321

TL1315

FD2

H

G

F

E

D

C

B

A

12345678910

9 – 7

LC-32D42U/LC-37D42U

TL9332

539

TL9333

TL9334

C8454

TL9335

R9306

TL9354

TL9355

TL9353

TL9352

TL9351

TL9350

TL9349

TL9348

TL9347

TL9346

TL9345

TL9344

TL9379

C8458

R8455

TL9336

TL1542

TL1541

TL1501

TL1531

TL1518

R1552

TL1507

TL1532

D1516

TL1506

R1553

TL1533

D1517

TL1515

TL1505

R1554

TL1504

TL1503

D1518

C1534

TL1502

R1591

C1535

R1590

Q1512

TL1514

TL1516

FB1512

D1520

C1533

R1588

D1504

R1587

R1589

C1532

R1586

TL1545

D1522

TL1547

IC1505

D1521

R1556

C1520

C1518

Q1504

TL1517

TL1510

TL1511

R1547

R1537

R1534

R1538

R1542

R1543

FB1511

TL1513

D1515

IC1502

D1506

D1510

C1514

C1516

D1502

FB1515

TL1535

TL1521

C1608

C1582

C1591

C1538

C1583

C1589

Q1515

C1592

C1597

C1517

C1616

C1615

C1519

C1548

C1547

R1546

C1613

C1614

R1594

TL1508

Q1514

R1545

Q1503

C1545

C1546

TL1509

R1593

TL1522

C1578

C1579

C1586

C1587

TL1520

TL1523

R1536

TL1534

TL1524

TL9002

TL1512

C1515

R1532

R1539

R1540

D1513

R1535

R1560

C1513

D1524

R1541

TL9005

D1509

IC1501

D1505

TL1519

VA1506

VA1507

VA1508

VA1505

R1581

FB1510

TL1528

VA1501

VA1502

VA1504

VA1503

TL1530

TL1526

TL1544

TL1546

TL1548

TL1525

D1503

TL1536

TL1529

TL1537

TL1527

C9623

TL2002

TL2003

TL2004

TL2005

C2027

C2028

C2029

TL3303

TL3301

FB2003

FB2004

FB2005

FB2001

IC9603

TL9603

C9608

R9616

FB3304

TL9003

C9628

R9618

R9623

Q9606

FB3307

R9621

R9620

TL3302

IC3301

FB3303

FB3306

C9625

C3340

TL9001

C3342

TL3317

R3304

R3303

IC3303

C3341

C3301

R3322

R3321

R3302

R3305

C3339

R3315

R3313

TL9605

R8119

R8117

R8123

R8121

R8333

R8105

R8213

R8252

C8118

C8115

R8126

R8129

R8130

R8125

R8326

R8319

R8322

R8325

R8251

R8320

C8126

C8105

C8101

R8311

R8312

R8301

R8302

R8304

C8116

R8305

R8306

R8330

R8128

C8106

C8102

R8254

R8310

R8127

C8119

C8117

FB8101

R8253

C8123

FB8102

R8131

C8125

R8134

C8122

R8327

C8120

C8121

R8323

FL8105

R8321

R8318

R8303

R8324

R8162

R8133

TL9381

TL9341

TL9338

TL9343

TL9340

TL9342

R8454

TL9357

C8456

TL9378

TL9380

TL9337

TL9339

TL9331

TL9330

TL9316

TL9329

TL9317

TL9314

TL9328

TL9327

TL9315

TL9313

TL9311

TL9359

TL9302

TL9326

TL9384

TL9301

TL9325

TL9312

TL9375

TL9324

TL9383

TL9323

TL9322

TL9321

IC8452

TL9320

TL9319

TL9318

TL9382

TL9310

7

213

R2264

TL9720

R2265

C9707

R9702

R9701

TL9201

TL9241

TL9223

TL9239

R9317

TL9207

TL9222

TL9224

TL9240

TL9221

TL9208

TL8410

R9209

TL9206

TL9203

TL9202

R9005

TL9205

R9006

R8149

R9203

TL9204

R8150

R8163R8164

R8170

R9304

C8197

R8168

R8188

R8172

TL8113

R8167

R8176

TL8115

R8115

C8160

R8136

R8135

R9307

TL8102

R8165

R8175

TL8114

TL8119

C8138

R8143

TL8108

C8172

TL8101

TP8108

C8213

C8108

C8161

TP8118

R8153

R8154

R8114

R8178

R8180

R8113

C8168

C8169

R8132

C8141

C8144

C8150

C8158

C8167

C8143

C8148

C8152

C8156

FB8106

C8188

C8165

R8166

C8208

C8163

C8134

C8176

C8185

C8200

C8207

C8131

C8205

FB8116

C8124

C8191

C8193

C8133

R8160

C8187

TL2623

C2624C2623

C8202

C8201

C8128

C8179

C8182

C8164

FB8114

C8198

C8183

C8136

C8162

FB8115

FB8113

X2601

C8129

C8166

C8135

C8189

FB8105

FB8112

TL2626

C8170

C8137

C8190

C8192

R2638R2639

C8203

C8142

C8147

C8153

C8157

C8171

FB8107

C2632

C8184

C8130

R8182

C8149

C8175

FB8109

FB8108

C2630

C8186

R2643

C8159

C8180

C8195

R8159

C8174

C8196

FB8111

FB8103

C8140

C8194

C8178

C8127

R2655

R2635

R8158

FB8117

C8151

C2628

C8181

C8132

R8142

R8187

C8204

C8155

C8139

C8177

C8206

C8173

R8157

C2620

R8148

C8154

C8145

R8147

C8199

C8146

FB8104

R8179

C2619

TL8120

R8186

TL9258

R8207

C2622

R8203

C2621

R8201

R8211

R8218

R8219

R8205

R8206

R8104

R8103

R8107

R8106

R2633

R8195

R8215

R8216

R8220

R8192

R8194

R8116

TL9257

R2634

R8193

FL8104

R8109

R2604

R8111

R8110

R2641

R2642

TL8112

FL8101

TL9256

R8101

C2629

TL8109

TL9255

R2602

R2603

TL8111

TL8110

R8108

R8196

C8461

R8475

R8474

C8462

R8470

C8460

R9018

TL3308

TL3312

TL3316

TL8453

TL8455

TL3310

TL3314

R3328

R3327

R8457

C8452

TL3309

TL3313

TL8454

C3317

C3319

C3320

TL9247

TL9248

C3331

C8453

TL3311

TL3315

TL3307

R8456

R3316

R3317

R3314

C3323

TL9243

TL9249

C8451

C9004

TL9244

IC9001

R3330

R3329

TL9246

TL3306

TL9242

TL9245

TL9266

R9013

R9012

TL9265

TL9264

TL9252

TL9262

TL9259

TL9254

TL9263

TL9253

TL9261

R3325

TL9260

TL9251

TL3304

TL3305

R3336R3332

TL9267

FL3301

TL9269

kame4

TL9268

TL9250

kame3

FL2607

TL2608

R2622

TL2607

R2619

TL2606

FL2605

TL2605

TL2604

IC8451

TL2603

FL2603

TL2602

R2617

FB2609

TL2601

IC8454

TL2618

FB2610

TL2617

R2601

FB2611

TL2611

FB2612

R2646

R2647

C2636

C2633

R2605

R2650

R2657

R2628

R2656

TL2612

R2649

L2606

C2641

R2648

FB2613

TL2613

L2607

C2642

IC9706

L2608

L2609

C2639

FB2614

TL2614

L2610

R2651

C2638

C2640

C2634

C2643

C2631

R2652

FL2601

R2626

R2653

TL2615

C2637

C2610

TL2616

R2627

TL2624

FL2602

FB2615

IC2601

C2626

C2627

TL2609

R2640

FB2605

C2617

C2625

FB2607

FB2606

C2618

TL8107

TL8116

TL8103

TL8106

TL8105

FB8601

TL8104

TL8118

TL8601

TL8117

R8603

R8604

FL8601

D8601

TL8602

FL8602

R8601

R8606

C8601

R8602

IC8601

TL8604

C8602

FB8602

TL8608

TL8603

R8610

R8611

R8612

R8605

TL8606

IC8602

TL8605

C8604

FB8603

TL8609

R8615

R8614

R8613

TL2610

FL2608

TL2619

C2614

FL2609

TL2620

C2615

FL2610

TL2621

C2616

R2616

R2615

TL2622

10 11 12 13 14 15 16 17 18 19

9 – 8

LC-32D42U/LC-37D42U

[2] AV TERMINAL Unit

H

G

F

E

D

C

B

AV TERMINAL Unit (Side-A)

A

123456

9 – 9

LC-32D42U/LC-37D42U

k001

C507

R512

FB508

R515

C508

R516

C572

J507

C571

J505

J509

H

LUG501

R513

FB507

G

J502

F

J508

J506

R560

FB523

SC7501

FB532

FB533

FB531

R611

R617
R618

R619

FB534

FB7506

FB7504

FB7502

C7501

FL501

R612

R613

FL502

FL503

R614
R615
R616

FL504

P2703

D7506

R7517

R7516

C7502

R7513

R7512

IC7501

C7503

D7505

C7506

C7504

D2707

D2706

D2705

D2704

C7505

FB2709

C2740

FB2710

C2739

FB2711

C2738

FB2712

C2737

E

D

P502

LUG2701

C

B

AV TERMINAL Unit (Side-A Chip)

J501

C2742

C2733

C2734

C2741

R506

FB503

FB509

R505

C503

FB505

R509

C505

R501

FB501

C501

D521

R502

FB504

R520

FB516

R528

FB513

R524

FB510

D520

R510

C570

D501

FB511

R518

Q507

R592

C557

R544

R589

FB512

FB515

R622

C509

D503

R620

FB506

D505

R517

R593

R594

R508

C558

FB517

FB514

C574

R529

C573

R523

C512

R521

R511

C510

Q509

Q508

R526
R527

D523

D522

R522

R530

R525

R519

D504

R590

C555

C515

C556

C581

R507

C516

C514

R588

R2734

Q515

R640

C504

R587

Q2703

R514

C582

R631

J503

C585

R641
R643
R642
R644

C569

R2733

R610
R538

C521

C528

R632

Q512

R637

R647

R605
R536

D510

D511

C524

R2732

R2731

C523

R634
R633

C559

C545

C548

R549

D513

C2756

Q517

Q516

R568

R539
R541

R542

C529
C530

R548

D512

R2727

Q2702

R621

C511

C560

C544

D509

C542

R537

C525

C532

R2728

R646

R645

C526
C527

D514

R628

R623

D508

C506

FB518

R567

R601

C564

R550

C2754

Q2701

R624

D506

R535

C533

Q510

R627

Q513

FB519

R607

D517

R2729

R2730

C518

R554

C2720

C2714

C522

C520

C543

R635

R638

R630

C549

D507

R555

C580

C519

R532

R608

D516

C534

R533

R626
R629
R625

R531

R540

R609

C535

LF1

R534

D515

R553

R654

R604

IC501

R556

R2721

FB521

Q511

Q514

R566

C2722

R2723

L2701

R552

C594

R648

C513

R653

C536

D2702

C2747

C2746

P504

R551

C601

R657
R659
R658

D519

C537

R2710

R2722

L2704

R656

R565

C2743

IC2702

R547

R636

C550

R639

R557

C2753

C2730

C2732

C2716

C2713
C2712

C2715

R546

R545

LUG502

R651

R649

Q519

Q521

Q520

R603

R558

R2715

C2736

IC2703

R2707

C2728

C2727

C2711

C2710

C2726

C2731

R2713

R2714

C517

R661

C502

R602

C2748

R2720
R2712

C562

C541

C547

C567

R504

R650

R660

R563

C540

R559

C538

Q518

R543

R561

R596

R2717

R2726

R503

R652

C2751

R2716

C2724

C2709

IC2701

C2707

C2725

C2729

C561

C583

R595

FB520

C546

C2723

C597

R655

C586

R591

R569

R575

R581

C2755

R2711

L2702

C2706

C2745

C2705

C596

C592

C575

C551

Q501

Q503

Q505

IC2704

C2752

C2735

R2709

R2708

R2706

C598

IC504

R606

C588

IC503

R597

R564

R571

Q502

R570 R572

C552

R577

Q504

R576 R578

C553

R583

Q506

R582 R584

C554

C2721

C2719

C2708

FB2704

L2703

C600

R599

C587

R598

C2750

R2704

FB522

R2705
R2703
R2702
R2701

C2704
C2702
C2701
C2703

R2719

R600

R562

C584

FB502

C599

C590

C589

R665

C595

C593

R664

R662

R574

R573

R580

R579

R586

R585

C2749

R2725

R2718

P501

C591

R663

C565

C568

C566

C2744

C531

FB525 FB526

C2718

SC502

SC501

P2704

FB524

C539

IC502

R2724

LUG2702

D2701

C2717

D2703

A

123456

9 – 10

LC-32D42U/LC-37D42U

[3] R/C, LED Unit

H

R/C, LED Unit (Side-A) R/C, LED Unit (Side-A Chip)

G

F

E

R132

C104

D101

SLD101

IC101

R135

C105
R136

P101

C107

RMC101

R101

C102

R117

Q105

Q103

R121

R111

R113

Q106

R112
R114

R109

R123

R126

R124

Q104

D103

D114

D115

R102
R137
R108

Q102

D113

Q107

R127

R122

R138

D

R110 R105

R106 R104 R107

C

B

C106

J101

R115

A

3

123456

9 – 11

[4] KEY Unit

H

KEY Unit (Side-A) KEY Unit (Side-A Chip)

LC-32D42U/LC-37D42U

D155

G

S157

P151

F

S153

E

D

S151

D151

R152

R151

S152

C

S154

B

D152

R153

S155

A

123456

9 – 12

LC-32D42U/LC-37D42U

LC-32D42U/LC-37D42U

CHAPTER 10. SCHEMATIC DIAGRAM

Service Manual

[1] DESCRIPTION OF SCHEMATIC DIAGRAM

1. VOLTAGE MEASUREMENT CONDITION:

1) The voltages at test points are measured on exclusive AC adaptor and the stable supply voltage of AC 120V. Signals are fed by a color bar signal
generator for servicing purpose and the above voltages are measured with a 20k ohm/V tester.

2. INDICATION OF RESISTOR & CAPACITOR:

RESISTOR

1) The unit of resistance "Ω" is omitted.

(K=kΩ=1000Ω, M=MΩ).

2) All resistors are ± 5%, unless otherwise noted.

(K= ± 10%, F= ± 1%, D= ± 0.5%)

3) All resistors are 1/16W, unless otherwise noted.

CAPACITOR

1) All capacitors are µF, unless otherwise noted.

(P=pF=µµF).

2) All capacitors are 50V, unless otherwise noted.

CAUTION:

This circuit diagram is original one, therefore there may be a slight
difference from yours.

SAFETY NOTES:

1) DISCONNECT THE AC PLUG FROM THE AC OUTLET
BEFORE REPLACING PARTS.

2) SEMICONDUCTOR HEAT SINKS SHOULD BE REGARDED AS
POTENTIAL SHOCK HAZARDS WHEN THE CHASSIS IS
OPERATING.

IMPORTANT SAFETY NOTICE:

PARTS MARKED WITH " " ( ) ARE IMPORTANT
FOR MAINTAINING THE SAFETY OF THE SET. BE SURE TO
REPLACE THESE PARTS WITH SPECIFIED ONES FOR MAIN­TAINING THE SAFETY AND PERFORMANCE OF THE SET.

AVIS DE SECURITE IMPORTANT:

LES PIECES MARQUEES " " ( ) SONT IMPOR­TANTES POUR MAINTENIR LA SECURITE DE L'APPAREIL.
NE REMPLACER CES PIEDES QUE PAR DES PIECES DONT LE
NUMERO EST SPECIFIE POUR MAINTENIR LA SECURITE ET
PROTEGER LE BON FONCTIONNEMENT DE L'APPAREIL.

10 – 1

[2] R/C, LED Unit

H

G

F

LC-32D42U/LC-37D42U

E

D

C

B

A

123456

10 – 2

LC-32D42U/LC-37D42U

[3] MAIN Unit

•MAIN Unit-1/20

H

G

F

E

D

C

B

A

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10 – 3

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 4

LC-32D42U/LC-37D42U

•MAIN Unit-2/20

H

G

F

E

D

C

B

A

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10 – 5

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 6

LC-32D42U/LC-37D42U

•MAIN Unit-3/20

H

G

F

E

D

C

B

A

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10 – 7

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 8

LC-32D42U/LC-37D42U

•MAIN Unit-4/20

H

G

F

E

D

C

B

A

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10 – 9

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 10

LC-32D42U/LC-37D42U

•MAIN Unit-5/20

H

G

F

E

D

C

B

A

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10 – 11

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 12

LC-32D42U/LC-37D42U

•MAIN Unit-6/20

H

G

F

E

D

C

B

A

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10 – 13

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 14

LC-32D42U/LC-37D42U

•MAIN Unit-7/20

H

G

F

E

D

C

B

A

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10 – 15

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 16

LC-32D42U/LC-37D42U

•MAIN Unit-8/20

H

G

F

E

D

C

B

A

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10 – 17

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 18

LC-32D42U/LC-37D42U

•MAIN Unit-9/20

H

G

F

E

D

C

B

A

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10 – 19

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 20

LC-32D42U/LC-37D42U

• MAIN Unit-10/20

H

G

F

E

D

C

B

A

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10 – 21

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 22

LC-32D42U/LC-37D42U

EES2!tjef
Evnqjoh!sftjtups

EES3!tjef

Evnqjoh!sftjtups

• MAIN Unit-11/20

H

G

F

E

D

C

B

A

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10 – 23

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 24

LC-32D42U/LC-37D42U

• MAIN Unit-12/20

H

G

F

E

D

C

B

A

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10 – 25

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 26

LC-32D42U/LC-37D42U

• MAIN Unit-13/20

H

G

F

E

D

C

B

A

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10 – 27

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 28

LC-32D42U/LC-37D42U

• MAIN Unit-14/20

H

G

F

E

D

C

B

A

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10 – 29

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 30

LC-32D42U/LC-37D42U

• MAIN Unit-15/20

H

G

F

E

D

C

B

A

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10 – 31

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 32

LC-32D42U/LC-37D42U

• MAIN Unit-16/20

H

G

F

E

D

C

B

A

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10 – 33

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 34

LC-32D42U/LC-37D42U

• MAIN Unit-17/20

H

G

F

E

D

C

B

A

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10 – 35

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 36

LC-32D42U/LC-37D42U

• MAIN Unit-18/20

H

G

F

E

D

C

B

A

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10 – 37

LC-32D42U/LC-37D42U

10 11 12 13 14 15 16 17 18 19

10 – 38

LC-32D42U/LC-37D42U

• MAIN Unit-19/20

H

G

F

E

D

C

B

A

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10 – 39