Toshiba 32WL46B, 32WL46G Schematic

SERVICE MANUAL

LCD Colour TV

32WL46B

FILE NO. 070-200405

F4LW Chassis

32WL46G

May. 2004 (YC/X)

SERVICE SAFETY PRECAUTIONS ................................................................................................................................... 3

HANDLING SERVICE MODE

LOCATION OF CONTROLS............................................................................................................................................... 11

LAYOUT OF MAJOR BOARDS........................................................................................................................................... 15

MECHANICAL DISASSEMBLY.......................................................................................................................................... 16

WIRING CONNECTIONS .................................................................................................................................................. 29

EXPLODED VIEW ............................................................................................................................................................. 35

PACKING DISASSEMBLY ................................................................................................................................................. 39

CHASSIS AND CABINET REPLACEMENT PARTS LIST ................................................................................................. 41

PC BOARDS TOP & BOTTOM VIEWS ............................................................................................................................ 53

PC BOARDS BOTTOM VIEW............................................................................................................................................ 67

CIRCUIT BLOCK DIAGRAM

SPECIFICATIONS.......................................................................................................................................................... END

APPENDIX:

THE LCD MODULE .........................................................................................................................................

.................................................................................................................................................................57

SCHEMATIC DIAGRAM

– 2 –

SERVICE SAFETY PRECAUTIONS

• The caution items shown here describe major safety issues and should always be observed.

• The meanings of the various indications are as follows.

WARNING

CAUTION

* Physical damage means major damage to a home, furnishings and other possessions.

Examples of marks

SHOCK HAZARD

PROHIBIT DISASSEM-

BLING

UNPLUG

Indicates a hypothetical situation in which service personnel and nearby third parties, or even end users due to a product defect after the service operation is completed, could possibly be in danger of injury or even death in the event of operational error.

Indicates a hypothetical situation in which service personnel and nearby third parties, or even end users after the service operation is completed, could possibly be in danger of injury, or where there could be physical damage in the event of operational error.

The" indicates caution (including danger and warning).

The actual meaning of this caution is indicated inside the The example shown to the left indicates the danger of "electrical shock".

indicates a forbidden action.

The The actual meaning of this caution is indicated inside the The example shown to the left indicates that disassembly is forbidden.

indicates a forced action (an action that must be performed).

The The actual meaning of this forced action is indicated by The example shown to the left indicates that the power plug must be disconnected.

or nearby illustrations or text.

GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS

– 3 –

KEEP CHILDREN

AWAY

GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS

UNPULUG

SHOCK HAZARD

USE SPECIFIED

PARTS

CAUTION FOR

WIRING

CAUTION FOR

ASSEMBLING /

WIRING

WARNING

• Always advise users to keep children away. There is danger of injury to children from tools, disassembled products, etc.

• Always disconnect the power plug before starting work whenever power is not required. Failure to disconnect the power plug before starting work can result in electrical shock.

• Depending on the model, use an insulation transformer or wear gloves when servicing with the power on, and disconnect the power plug to avoid electrical shock when replacing parts. In some cases, alternating current is also impressed in the chassis, so electrical shock is possible if the chassis is contacted with the power on.

• Always use the replacement parts specified for the particular model when making repairs. The parts used in products have the necessary safety characteristics such as inflammability, voltage resistance, etc.; therefore, use only replacement parts that have these same characteristics. Use only the specified parts when the

• Parts mounting and routing of the wiring should be the same as that used originally. For safety purposes, insulating materials such as tubing or tape is sometimes used and printed circuit boards are sometimes mounted floating. Also make sure that wiring is routed and clamped to avoid parts that generate heat and which use high voltage. Always follow the original scheme.

• After a repair has been completed, reassemble all disassembled parts, and route and reconnect the wiring, in accordance with the original scheme. Do not allow internal wiring to be pinched by cabinets, panels, etc. Any error in reassembly or wiring can result in electrical leakage, flame, etc., and may be hazardous.

mark is included in a circuit diagram or parts list.

CHECK INSULATION

RESISTANCE

PROHIBIT

REMODELING

• After completing the work, disconnect the power plug from the outlet, remove the antenna, turn on the power switch. Then, use a 500V insulation resistance meter to check the insulation resistance of the antenna terminal, other metallic parts and between the prongs of the power plug to make sure that the insulation resistance is 1M 1 or more. The set will require inspection and repair if the insulation resistance is below this value.

• Never remodel the product in any way. Remodeling can result in improper operation, malfunction, or electrical leakage and flame, which may be hazardous

– 4 –

HANDLING THE LCD MODULE

Safety Precautions

In the event that the screen is damaged or the liquid crystal (fluid) leaks, do not breathe in or drink this fluid. Also, never touch this fluid. Such actions could cause toxicity or skin irritation. If this fluid should enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid should enter the eyes, immediately rinse the ey es thoroughly with running water.

Precautions for Handling the LCD Module

The LCD module can easily be damaged during disassembly or reassembly; therefore, always observe the following precautions when handling the module.

1. When attaching the LCD module to the LCD cover, position it appropriately and fasten at the position where the display can be viewed most conveniently.

3. If the panel surface becomes soiled, wipe with cotton or a soft cloth. If this does not remove the soiling, breathe on the surface and then wipe again. If the panel surface is extremely solied, use a CR T cleaner as a cleaner. Wipe off the panel surface b y drop the cleaner on the cloth. Do not drop the cleaner on the panel. Pay attention not to scratch the panel surface.

GENERAL ADJUSTMENTSSPECIFIC INFORMATIONS

4. Leaving water or other fluids on the panel screen for an extended period of time can result in discoloration or stripes. Immediately remove any type of fluid from the screen.

2. Carefully align the holes at all four corners of the LCD module with the corresponding holes in the LCD cover and fasten with screws. Do not strongly push on the module because any impact can adversely affect the performance. Also use caution when handling the polariz ed screen because it can easily be damaged.

The metal edges of the LCD module

CAUTION

are sharp, so use caution to avoid injury.

5. Glass is used in the panel, so do not drop or strike with hard objects. Such actions can damage the panel.

6. CMOS-LSI circuitry is used in the LCD module, so avoid damage due to static electricity. When handling the module, use a wrist ground or anchor ground.

– 5 –

7. Do not expose the LCD module to direct sunlight or strong

9. Do not disassemble the LCD module. Such actions could result in improper operation.

10.When transporting the LCD module, do not use packing containing epoxy resin (amine) or silicon resin (alcohol or oxim). The gas generated by these materials can cause loss of polarity.

ultraviolet rays for an extended period of time.

GENERAL ADJUSTMENTS

8. Do not store the LCD module below the temperature conditions described in the specifications. Failure to do so could result in freezing of the liquid crystal due to cold air or loss of resilience or other damage.

IC INFORMATIONS

Cleaning

Remove the power plug before cleaning. Do not use solvents such as benzine or thinner to clean the TV. – These solvents may distort the cabinet or damage its finish. – If rubber or vinyl products remain in contact with the TV for a long time, a stain may result.

When the cabinet becomes dirty, clean it with a soft, dry cloth. When the cabinet is very dirty. – Use a damp cloth to wipe the cabinet clean. – Finish with a dry cloth.

When cleaning the surface of the LCD display: – Wipe the panel surface gently with a soft, dry cloth.

When dust has collected on the power plug connectors, remove the plug from the outlet and clean off the dust.

This dust may cause a fire due to reduced insulation on the plug.

– 6 –

SERVICE MODE

1 . ENTERING TO SERVICE MODE

(1) Procedures

1) Press MUTE key of remote hand unit to indicate MUTE on screen.

2) Press again MUTE key of remote hand unit to keep pressing until the next procedure. (OSD display disappears.)

3) In the status of above (2), press MENU key on TV set.

(2) During service mode, indication S is displayed at upper right

corner on screen.

(3) Service mode is not memorized as the last-memory.

2.TEST SIGNAL SELECTION

The function of VIDEO test signal selection is cyclicall y changed with VIDEO key (remote unit) in Service mode.

Table 1

Test signal

No.

0 1 2 3 4 5 6 7 8 9

Signal OFF NTSC All Red signal NTSC All Green signal NTSC All Blue signal NTSC Cross hatch NTSC All white signal PAL All Red signal P AL All Green signal PAL All Blue signal PAL Cross hatch P AL All white signal Signal OFF

Name of pattern

3.SERVICE ADJUSTMENT

(1) ADJUSTMENT MENU INDICATION ON/OFF :

MENU key(on TV set)

(2) During display of adjustment menu,the followings are

effective.

1) Selection of adjustment item : POS UP/DN key (on TV/Remote unit)

2) Adjustment of each item : VOL UP/DN key (on TV/Remote unit)

3) Direct selection of adjustment item R CUTOFF : 1 POS (Remote unit) G CUTOFF : 2 POS (Remote unit) B CUTOFF : 3 POS (Remote unit)

4) Data setting for PC unit adjustment SUB CONTRAST : 4 POS (Remote unit) SUB COLOR : 5 POS (Remote unit) SUB TINT : 6 POS (Remote unit)

5) Screen adjustment mode ON/OFF: Previous

6) Test signal selection: VIDEO (Remote unit)

* In service mode, serviceable items are limited.

(3) Self check display : 9 POS (Remote unit)

* Cyclic display

(4) Initialization of memory (QA02 E

CALL (Remote unit)+POS UP(TV) Causion : All data of memory IC (including factory setting

value) is initialized by this operation. (Replacement of memory IC is required.)

(5) Initialization of self check data :

CALL (Remote unit)+POS DN(TV)

PROM) :

– 7 –

(6) BUS OFF :

CALL (Remote unit)+VOL UP(TV)

4.FAILURE DIAGNOSIS PROCEDURE

This model is equipped with self diagnosis function inside for trouble shooting.

4-1.Contents to be Confirmed by Customer

Table 2

Contents of self diagnosis Set Power does not turn on by power-key, or it turns off automatically.

1.When power protection circuit operates;

2.When FAN STOP was detected:

3.When failure of Audio circuit was detected:

DIAGNOSIS FUNCTION FOR LED INDICATION

LED is lit in 1 second at intervals of 1 second.

TROUBLESHOOTING DIAGNOSIS FUNCTION

LED

Short-circuit detection of BUS line

BUS line may possib ly be short-circuit (SDA to SCL), or BUS line (SDA, SCL) is grounded.

Power indicator lamp blinks and picture does not come.

1.Power indicator red lamp blinks. (0.5 seconds interval)

2.Power indicator red lamp blinks. (3 seconds interval)

3.Power indicator red lamp blinks. (5 seconds interval) If these indications appear, repairing work is required.

Display items and actual operation

CAUSE

LED is lit in 0.5 at intervals of 0.5 second.

LED is lit in 0.25 second at intervals of 2 second.

LED is lit in 5 seconds at intervals of 5 seconds.

High : Lighting Low : No Lighting

Overcurrent limiter detection

POWER terminal on TV microprocessor becomes LOW at 2 seconds or more .

Interruption of FAN motor function detection

No. 53 terminal on TV microprocessor becomes HIGH for 30 seconds.

Abnormal sound detection

P4 terminal of QS10 becomes LOW for 15 seconds during Speaker is activated.

– 8 –

4-2. Contents to be Confirmed in Service Work (Check in Self Diagnosis Mode)

Tab le 3

Contents of self diagnosis Contents of self diagnosis B. Indication of part code of microprocessor.(QA01) C. Total Time of Power on (hour) D. Number of operation of power protection circuit E. Check of communication status in BUS line F. Check of signal line by sync signal detection

Display items and actual operation * Please see item.4-4

Display items and actual operation

4-3. Executing Self Diagnosis Function

Procedures (1) Set to service mode.

(2) Pressing “9” key on remote unit displays self diagnosis result on screen.

Every pressing changes mode as below. SERVICE mode

(3) To exit from service mode, turn power off.

SELF DIAGNOSIS mode M2 System version info V ersion check(QA01,QM24 etc)

Description for Version Check Screen

QA01 QA02 QF14 QM24 QM17

– 9 –

**** ** ****-** ** **

Version information for MainMicom(QA01)

V ersion information for E2PROM(QA02)

Version information for M2 Sub-Micom(QF14)

Version information for BEP Sub-Micom(QM24)

Version information for BEP E2PROM(QM17)

4-4. Self Diagnosis Function Indication & Contents

SELF CHECK 23000XXX B TIME C POWER : 000 D BusCont : OK E Block : UV V1 V2 V3 V4 F

Fig. 1

Table 4

Item

B) Part code C) TIME

D) POWER

E) BUS CONT

Indication of part code of microprocessor. (QA01) Total Time of Power on (hour) Number of operation of power protection circuit

Communication state of bus line

Contents

Instruction of results

Indication of“OK”for normal result Indication of failure place in abnormality (Failure place to be indicated) QA02 NG, H001 NG, Q501 NG, QV01 NG, Q4420 NG H002 NG QA02 : E

PROM, H001 : MAIN TUNER, Q501 : MCD QV01: AVSW, Q4420 : SCAN PROCESSOR H002 : ITT,DSP,APRO

F) BLOCK

The sync signal part in each video signal supplied from each block is detected. Then by checking the existence or non of sync part, the result of self diagnosis is displayed on screen. Besides, when “9” key on remote unit is pressed, diagnosis operation is first executed once.

– 10 –

Note 1. The indication of failure place is only one

place though failure places are plural. When repair of a failure place finishes, the next failure place is indicated.

*Indication by color

Select Source : Sync exists = Green : No Sync = Red Other Source : Black

Front

LOCATION OF CONTROLS

TV front view

Remote sensor

On-timer indicator (green)

Power indicator (red)

Power switch

– 11 –

Back

Back view

MONITOR OUT [40]

(Audio/Video output)

TV back view

Cable

holder

Cable holder

Back view Side view

Aerial input

Audio input

RGB/PC IN

EXT3 IN

(S-video/Video/

Audio input)

video/Composite

Back view

EXT6 IN

(S-video/

Video/Audio

input)

EXT2 IN

(Component

video/Audio

input)

WOOFER OUT

AUDIO OUT (Fixed/Variable)

EXT4 IN/OUT

(Scart 4)

EXT5 IN/OUT

(Scart 5)

EXT3 IN/OUT

(Scart 3)

Headphones jack

(3.5 mm, stereo)

EXT1 IN

(Component video/

Composite video/Audio

input)

– 12 –

Remote Control

Teletext on/off

Initial/index function for Teletext

CALL

To return to the previous programme

Picture mode selection

DVD MENU

• Menu

• Volume – +

Stereo/bilingual selection

Mode switch TV : To control TV VCR : To control VCR DVD : To control DVD

When in VCR or DVD mode: (Only for Toshiba VCR/DVD players)

to PAUSE

to EJECT

to SKIP-REWIND

to SKIP-FORWARD

to PLAY

to STOP

to REWIND

to FAST FORWARD

CALL

MENU EXIT

DVD

TV VCR DVD

Power on/Standby (For Toshiba TV/VCR/DVD)

Number buttons (0-9)

• Input source selection

(EXT1 - EXT6, RGB/PC)

• To access sub-pages when in Teletext

Picture size selection

EXIT

• Menu

• Programme position

• Teletext

Teletext control buttons (Four coloured buttons : Red, Green, Yellow, Blue)

Bass boost on/off External woofer on/off

Sound mute

When in TV (Teletext) mode:

viewing a normal picture

To reveal concealed text

To hold a wanted page

To enlarge teletext display size

To select a page whilst

– 13 –

LAYOUT OF MAJOR BOARDS

U800 POWER MODULE UNIT

U002B PC INPUT Board

U002A TN/AOUT Board

U003 SCALER Board

U001E KEY SW Board

U001C AV2 Board

U001D POWER SW Board

U001A SIGNAL Board

U001G D-REWRITE Board

U001B FRONT/AV Board

U001F LED/RMT Board

– 15 –

MECHANICAL DISASSEMBLY

• Note: Be sure to lay down the main body (by placing its screen downward) f or disassembly.

1. Removing the back cover

1) Remove the BC stand cover.

2) Remove the BC terminal cover.

3) Remove 6 screws, then remove the stand.

BC Stand cover

Stand

BC T erminal cover

PP 5x12

– 16 –

4) Remove 11 screws (PBI 4x12).

5) Remove 5 screws (PP 3x6).

6) Remove the back cover.

PP 3x6

PBI 4x12

PP 3x6

Back cover

– 17 –

2. Removing the speakers

1) Remove the back cover. (Refer to Item 1.)

2) Disconnect the speaker wire harness on the Front/AV board.

3) Remove the wire harness of the 3 wire holders.

4) Remove 4 screws, then remove the left speaker and wire holder.

5) Remove 4 screws, then remove the right speaker and wire holder.

PBI 4x12

Wire holder

Speaker (R)

PBI 4x12

Wire holde

Speaker (L)

Wire holder

Wire harness Speaker wire harness

FRONT/AV Board

– 18 –

3. Removing the top shield bracket

1) Remove the back cover. (Refer to Item 1.)

2) Remove 5 screws, then remove the top shield bracket.

Top shield bracket

STP 3x8

– 19 –

4. Removing the Power Module unit

1) Remove the back cover. (Refer to Item 1.)

2) Disconnect the power cord from the connector.

3) Remove the 3 wire harnesses from the 3 wire clampers on the plate back R.

4) Disconnect the 8 wire harnesses from the 8 connectors on the Power Module unit.

5) Remove 7 screws, then remove the Power Module unit.

Power cord

STP 3x8

Wire harnesses

POWER MODULE UNIT

Wire harnesses

Plate back R

– 20 –

Wire clampers

5. Removing the Scaler board

1) Remove the back cover. (Refer to Item 1.)

2) Remove the top shield bracket. (Refer to Item 3.)

3) Remove 4 screws (STP3x6) and 2 screws (STP3x5), then remove the top shield RM.

4) Disconnect the 8 wire harnesses and 2 FFC from the Scaler board.

5) Remove 4 screws (STP3x5), then remove the Scaler board and bottom shield RM.

STP 3x6

Top shield RM

SCALER board

STP 3x5

STP 3x6

STP 3x5

Wire harnesses

SCALER board

FFC

Wire harnesses

Bottom shield RM

– 21 –

6. Removing the D-Rewrite board

1) Remove the back cover. (Refer to Item 1.)

2) Remove the top shield bracket. (Refer to Item 3.)

3) Remove the Scaler board. (Refer to Item 5.)

4) Remove 2 screws, then remov e the D-Rewrite board.

5) Disconnect the 2 wire harnesses and 1 FFC on the D-Rewrite board.

6) Remove 2 screws, then remove the digital unit bracket.

7) Remove 2 screws, then remove the scaler unit bracket.

Scaler unit bracket

FFC

D-REWRITE board

STP 3x8

Wire harnesses

Digital unit bracket

STP 3x8

PP 3x6

– 22 –

7. Removing the back terminal plate, back bottom plate and back R plate

1) Remove the back cover. (Refer to Item 1.)

2) Remove the top shield bracket. (Refer to Item 3.)

3) Remove the Scaler board. (Refer to Item 5.)

4) Remove the D-Rewrite board. (Refer to Item 6.)

5) Remove 5 screws (BIDT 2 3x10BZ) and 2 screws, then remove the back terminal plate.

6) Remove 2 screws (STP 3x8), 2 hexagon nuts and 1 toothed washer, then remove the back bottom plate.

7) Remove 5 screws (STP 3x8), then remove the back R plate .

STP 3x8

Back plate R

STP 3x8

Toothed washer

Back bottom plate

Hexagon nuts

Back terminal plate

STP 3x8

BIDT2 3x10 BZ

– 23 –

8. Removing the TN/AOUT, A V2 and Signal boards

1) Remove the back cover. (Refer to Item 1.)

2) Remove the top shield bracket. (Refer to Item 3.)

3) Remove the Scaler board. (Refer to Item 5.)

4) Remove the D-Rewrite board. (Refer to Item 6.)

5) Remove the back plates. (Refer to Item 7.)

6) Remove the connector [A] and 3 harnesses from the TN/AOUT board.

7) Remove 5 screws (STP 3x8), then remove the TN/AOUT board.

8) Remove the connector [B] from the Signal board.

9) Remove 3 screws (STP 3x8), then remove the AV2 board.

10) Remove 1 screw (BIDT2 3x10BZ), then remove the AV2 panel.

11) Remove the 6 wire harnesses and 2 FFC from the Signal board.

12) Remove 5 screws (STP 3x8), then remove the Signal board.

STP 3x8

TN/AOUT board

Connector [A]

Wire harnesses

SIGNAL board

Wire harnesses

FFC

Connector [B]

STP 3x8

Wire harness

STP 3x8

AV2 board

SIGNAL board

BIDT2 3x10 BZ

AV2 panel

– 24 –

9. Removing the Front /AV board

1) Remove the back cover. (Refer to Item 1.)

2) Remove 1 screw (BIDT2 3x10 BZ).

3) Remove 2 screws (PP 3x6), then remove the front AV panel.

4) Remove 1 screw (BIDT2 3x10 BZ) and 1 screw (PP 3x6), then remove the rear AV panel.

5) Disconnect the 2 wire harnesses and 1 FFC from the Front/AV board.

6) Remove 2 screws (PP 3x6), then remove the wire holder and Front/AV board.

Wire harnesses

PP 3x6

Wire holder

FFC

BIDT2 3x10 BZ

PP 3x6

Rear AV panel

FRONT/AV board

PP 3x6

Front AV panel

BIDT2 3x10 BZ

– 25 –

10. Removing the Power SW and LED/RMT boards

1) Remove the back cover. (Refer to Item 1.)

2) Remove 3 screws (STP 3x8), then remove the LED/RMT board.

3) Disconnect the 2 wire harnesses from the connector on the LED/RMT board.

4) Remove 2 screws (PP 3x6), then remove the cord holder.

5) Remove 2 screws (STP 3x8), then remove the switch cover and cap.

6) Disconnect the wire harness from the connector on the Power SW board.

7) Remove 3 screws (STP 3x8), then remove the Power SW board.

PP 3x6

Cord holder

Wire harness

STP 3x8

POWER SW board

Switch cover

Cap

STP 3x8

LED/RMT board

Wire harnesses

– 26 –

11. Removing the chassis frame

1) Remove the back cover. (Refer to Item 1.)

2) Remove the speakers. (Refer to Item 2.)

3) Remove the top shield bracket. (Refer to Item 3.)

4) Remove Power Module unit. (Refer to Item 4.)

5) Remove the Scaler board. (Refer to Item 5.)

6) Remove the D-Rewrite board and bracket. (Refer to Item 6.)

7) Remove the back plate. (Refer to Item 7.)

8) Remove the TU/AOUT, AV2 and Signal boards. (Refer to Item 8.)

9) Remove the Front/AV board. (Refer to Item 9.)

10) Remove the Power SW and LED/RMT boards. (Refer to Item 10.)

11) Remove 10 screws (PBI 4x12) and 8screws (PP 4x10), then remove the chassis frame.

PP 4x10

PBI 4x12

PP 4x10

Chassis frame

PP 4x10

– 27 –

12. Removing the LCD and front bezel cover assembly

1) Remove the back cover. (Refer to Item 1.)

2) Remove the speakers. (Refer to Item 2.)

3) Remove the top shield bracket. (Refer to Item 3.)

4) Remove Power Module unit. (Refer to Item 4.)

5) Remove the Scaler board. (Refer to Item 5.)

6) Remove the D-Rewrite board and bracket. (Refer to Item 6.)

7) Remove the back plate. (Refer to Item 7.)

8) Remove the TU/AOUT,AV2 and Signal boards. (Refer to Item 8.)

9) Remove the Front/AV board. (Refer to Item 9.)

10) Remove the Power SW and LED/RMT boards. (Refer to Item 10.)

11) Remove the chassis frame. (Refer to Item 11.)

12) Remove 2 screws (STP 3x8), then remove the key SW panel.

13) Remove 2 screws (STP 3x8), then remove the Key SW board.

14) Disconnect the wire harness from the connector on the Key SW board.

15) Lift up the LCD slowly from the front bezel cover assembly toward to the arrow direction.

16) Remove 2 screws (PP 4x10), then remove the two bracket panels top.

17) Remove 2 screws (PP 4x10), then remove the two bracket panels bottom.

LCD

PP 4x10

Bracket panel bottom

Front bezel cover assembly

Bracket panel top

PP 4x10

KEY SW panel

Wire harness

STP 3x8

KEY SW board

BTP 4x12

– 28 –

WIRING CONNECTION

1.Power Block Module - TN/AOUT - SCALER

P805A

P816A

P809

P809A

U002A TN/AOUT BOARD

U003 SCALER BOARD

PJ10

PJ11

: WIRE HOLDER : WIRE CLAMPER

P805A (

U800 POWER BLOCK MODULE

P816A (

U800 POWER BLOCK MODULE

P809 (

U800 POWER BLOCK MODULE

CONNECTOR (Board name) Description

) PJ10 (U003 SCALER BOARD) WIRE HARNESS, POW-SCALER ) PJ11 (U003 SCALER BOARD) WIRE HARNESS, POW-SCALER

) P809A (U002A TN/AOUT BOARD) WIRE HARNESS, POW-TN/AOUT

– 29 –

2.Power Block Module - TN/AOUT - SIGNAL - FRONT/AV - KEY SW LED/RMT - SPEAKER

U001E KEY SW BOARD

PB13B

PV25A

U002A TN/AOUT BOARD

U001A SIGNAL BOARD

P601

P614A

P810B

P811A

P810A

U001B FRONT/AV BOARD

: WIRE HOLDER : WIRE CLAMPER

P811B

U800 POWER BLOCK MODULE

PB11A

SPEAKER (L)SPEAKER (R)

PB12A

PB13A

U001F LED/RMT BOARD

PV25B P614B

PB12B

PB11B

CONNECTOR (Board name) Description PV25A (U001A SIGNAL BOARD) PV25B (U001B FRONT/AV BOARD) WIRE HARNESS, SIG-FAV PB11A (U001A SIGNAL BOARD) PB11B (U001F LED/RMT BOARD) WIRE HARNESS, SIG-LED-RMT PB12A (U001A SIGNAL BOARD) PB12B (U001F LED/RMT BOARD) WIRE HARNESS, SIG-LED-RMT PB13A (U001A SIGNAL BOARD) PB13B (U001E KEY SW BOARD) WIRE HARNESS, SIG-KEY SW P601 (U002A TN/AOUT BOARD) SPEAKER (L)/(R) WIRE HARNESS, SPK-RELAYED P614A (U002A TN/AOUT BOARD) P614B (U001B FRONT/AV BOARD) WIRE HARNESS, TN/AOUT-FAV P811A (U001A SIGNAL BOARD) P811B ( P810A (U001A SIGNAL BOARD) P810B (

U800 POWER BLOCK MODULE U800 POWER BLOCK MODULE

) WIRE HARNESS, SIGNAL-POW ) WIRE HARNESS, SIGNAL-POW

– 30 –

3.Po wer Block Module - LCD Panel

LCD PANEL

P801 P802

P802A

: WIRE HOLDER : WIRE CLAMPER

CN804

CN805

U800 POWER BLOCK MODULE

U001D POWER SW BOARD

CN4

CN5

P802 (

U800 POWER BLOCK MODULE U800 POWER BLOCK MODULE

P801 ( CN804 ( CN805 (

U800 POWER BLOCK MODULE U800 POWER BLOCK MODULE

CONNECTOR (Board name) Description

) P802A

(U001D POWER SW BOARD)

WIRE HARNESS, POW-POW SW

) POWER CORD POWER CORD

) CN4 (PANEL) WIRE HARNESS, PANEL-POW ) CN5 (PANEL) WIRE HARNESS, PANEL-POW

– 31 –

+ 75 hidden pages

Toshiba 32WL46B, 32WL46G Schematic

TABLE OF CONTENTS

SERVICE SAFETY PRECAUTIONS

HANDLING THE LCD MODULE

SERVICE MODE

LOCATION OF CONTROLS

LAYOUT OF MAJOR BOARDS

MECHANICAL DISASSEMBLY