Toshiba 32LV733G Schematic

(*1), as indicated by the underlined serial number.

©

SERVICE MANUAL

LCD Color Television

32LV733G

Ver. 2.00

This model is classified as a green product

This Service Manual describes replacement parts for the green product. When repairing this

green product, use the part(s) described in this manual and lead-free solder (*2).

For (*1) and (*2), refer to GREEN PRODUCT PROCUREMENT and LEAD-FREE

SOLDER.

TOSHIBA CORPORATION

IMPORTANT NOTICE

WARNING:

You are requested that you shall not modify or alter the information or data

provided herein without prior written consent by Toshiba. Toshiba shall not

be liable to anybody for any damages, losses, expenses or costs, if any,

incurred in connection with or as a result of such modification or alteration.

THE INFORMATION OR DATA HEREIN SHALL BE PROVIDED "AS IS"

WITHOUT ANY WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED

WARRANTY OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

PURPOSE.

Toshiba shall not be liable for any damages, losses, expenses or costs, if

any, incurred in connection with or as a result of use of any information or

data provided herein.

IMPORTANT NOTICE

up windows are limited by

User's Guide

Contents:

Install Autodesk DWF Viewer

Internet Explorer Settings

Operating Environment

Functions Provided on Each Drawing Page

Using with Network

Install Autodesk DWF Viewer

Autodesk DWF Viewer is necessary to view drawings and to activate the functions of this system. Please

download and install.

Internet Explorer Settings

When Windows XP SP2 or Windows Vista is used, ActiveX control and pop-

the enhanced security function and this system may not work. In that case, perform the Internet Explorer

setting using the following procedure to restore normal operation.

1. Windows version check

[My Computer (right-click)] - [Properties]

2. Internet Explorer setting

[Tools] - [Internet Options]

for Internet Explorer 7

for Windows Vista

Operating Environment

PC : Pentium III or higher recommended

Monitor : 1024 x 768 or higher resolution recommended

Mouse : A mouse with wheel recommended

OS : Microsoft Windows 2000 SP4 / XP / Vista

Browser :

Drawing viewer : Autodesk DWF Viewer 6.0 / 7.0

* Use the software following respective license terms and conditions.

Microsoft Internet Explorer 6.0 / 7.0

Functions Provided on Each Drawing Page

Parts Information Reference Function

When the character string of a part on the drawing is clicked, its information is popped up at the location.

You can get any parts information immediately on the screen without referring to the maintenance parts list.



Parts Search Function

You can search any part within the displayed drawing or within the whole schematic diagram/board view by

specifying a location number. The pop-up window displayed by clicking a part 's character string allows to

search the part within the applicable schematic diagram, board view or spare parts list.

A circle appears when the part is found, showing the part's location within the drawing.





Signal Line/Connector Destination Display Function

When a name at the end of a signal line in a divided schematic diagram is clicked, the destination of the

signal is searched and the display changes to the destination. Connecter destinations can also be searched in

the same way.



When two or more search results are provided, their drawing names are displayed, allowing you to choose a

desired drawing to display.



Layer Display Changing Function

When any of the color buttons on the toolbar is clicked, it can be selected to display desired layer in its color

or not to display each layer. This allows you to see the pattern layer only by setting other layers to "non-

display".



PC Board View Pattern Highlighting Function

When a pattern on a board view is clicked, it is highlighted in green. This allows easy pattern tracing.



Specified Area Printing Function

The Autodesk DWF Viewer enables to print the displayed drawing region as it is on a printer. It also allows

to print a large-sized drawing in multiple pieces (tile printing).



Using with Network

PRECAUTION

To use ZEUS Service Manual Ver.2 with network, the file-path names written on the source files of each

ZEUS Engine Program Ver.2 and ZEUS Service Manual Ver.2 are to be modified.

Perform the procedure described below.

Preparation

1. Run the program file zuesFPch.exe to install the program file for File-Path to the Local PC.

-> Download zeusFPch_setup.zip (2.3MB)

2. Run the program file ZeusSetup_v2.0.exe to install the ZEUS Engine Program in C:\Program

Files\zeus of the local PC. This can be done by running the installer program provided.

3. Create the appropriate folder where the ZEUS Engine Program Ver.2 and the ZEUS Service Manual

Ver.2 to be stored in the server.

4. Move the ZEUS Engine Program of step 2 to the folder created at step 3 in the Server.

5. Detach the ZEUS Service Manual Ver.2 to the folder created at step 3 in the Server.

6. Unzip the ZEUS Service Manual Ver.2 within the folder in the Server.

Example of folder

Procedure of File-Path

The zeusFPch is the exclusive program to exchange the file-path names written in both source files of ZEUS

Manual and ZEUS Engine program into those applicable to the network use.

1. Whenever changing the file-

path of both ZEUS Engine Program and ZEUS Service Manual to use with

network, pay the attention to set the "Exchange to" column that should have a proper relation between

ZEUS Engine Program and ZEUS Service Manual with referring the following.

Run the zeusFPch and set "Exchange to" by referring to the examples below.

Example 1 :

In the "Exchange to" column shows the relation between ZEUS Service Manual and ZEUS Engine

Program.

../ counts the relation between.

Thus in this case, it must be ../../zeus/ (2 counts).

Example 2 :

In this case, it must be ../../../zeus/ (3 counts).

2. Run the zeusFPch to change the path in the ZEUS Engine Program Ver.2.

3. Set ZEUS Engine Program in the created folder in the server to the "Target Folder", and then press

"START".

(This procedure is one time only)

bottom corner on the screen whenever searching the location links. This is not malfunction.

4. Run the ZeusFPch to change the path in the ZEUS Service Manual Ver2.

5. Set unzipped ZEUS Service Manual in the created folder in the server to the "Target Folder", and then

press "START".

(This procedure is required whenever placing service manual.)

Confirmation

Confirm that service manual on the server can be operated normally by client PC.

Note:

In case of accessing the ZEUS Manual through WEB site, the small pop-up window appears at the left

IMPORTANT NOTICE

Through WEB, ver. 6.5 has been released but with it, the linking function in this manual may

A Known Malfunction

Autodesk® DWF™ Viewer version
(Free software provided through WEB)

Use Autodesk DWF Viewer ver. 6.0.

not work properly.

If ver. 6.5 has been installed, uninstall it and reinstall ver. 6.0.

To get ver. 6.0, click the icon, or contact to the nearest Toshiba Service Centre for further

assistance.

Freezing windows opened
(Cannot close the open windows)

This may happen occasionally.

In case of encountering this, follow the procedure below.

1. Press [Ctrl], [Alt] and [Delete] keys at the same time to engage windows security

windows.

2. Then, choose TASK manager and Application tab, and select TOSHIBA SERVICE

MANUAL-Microsoft Internet Explorer.

3. Click TASK-end.



Main Window back forwarded

The real cause has not been found yet but with this condition, nothing disturbs the service

manual operation.

Continue to use by operating the windows.

Precaution when opening the diagrams

While opening the diagrams, the menu in the left frame changes its color to GRAY. This is

an indication that the viewer is processing.

With this condition, the menu indication color may stick to the GRAY color or Windows

may freeze if clicking other menu.

To avoid such things, do not operate any others while menu turns GRAY color.

If entering this, re-open the service manual or refresh the left frame.

LEAD-FREE SOLDER

free solder must

be used in the servicing and repair of this product.

product made with lead

free solder may result in damage to the component and or PCB being

product especially when soldering large components, through

This product is manufactured using lead-free solder as a part of a movement within the

consumer products industry at large to be environmentally responsible. Lead-

WARNING: This product is manufactured using lead free solder.

DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT!

The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to

104ºF (30ºC to 40ºC). Use of a soldering iron designed for lead-based solders to repair

-

soldered. Great care should be made to ensure high-quality soldering when servicing this

-hole pins, and on PCBs as the

level of heat required to melt lead-free solder is high.

SAFETY INSTRUCTION

Always keep tools, components of the product, etc away from the children, These items

NEVER remodel the product in any way. Remodeling can result in improper operation,

WARNING: BEFORE SERVICING THIS CHASSIS, READ THE "SAFETY

PRECAUTION" AND "PRODUCT SAFETY NOTICE" INSTRUCTIONS BELOW.

Safety Precaution

WARNING: SERVICING SHOULD NOT BE ATTEMPTED BY ANYONE

UNFAMILIAR WITH THE NECESSARY PRECAUTIONS ON THIS RECEIVER.

THE FOLLOWING ARE THE NECESSARY PRECAUTIONS TO BE OBSERVED

BEFORE SERVICING THIS CHASSIS.

1. An isolation transformer should be connected in the power line between the receiver

and the AC line before any service is performed on the receiver.

2. Always disconnect the power plug before any disassembling of the product. It may

result in electrical shock.

3. When replacing a chassis in the cabinet, always be certain that all the protective

devices are put back in place, such as nonmetallic control knobs, insulating covers,

shields, isolation resistor-capacitor network, etc.

4.

may cause injury to children.

5. Depending on the model, use an isolation transformer or wear suitable 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.

6. Always use the replacement parts specified for the particular model when making

repairs. The parts used in products require special 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 mark is indicated
in the circuit diagram or parts list.

7. Parts mounting and routing dressing of wirings should be the same as that used

originally. For safety purposes, insulating materials such as isolation tube or tape are

sometimes used and printed circuit boards are sometimes mounted floating. Also make

sure that wirings is routed and clamped to avoid parts that generate heat and which use

high voltage. Always follow the manufactured wiring routes / dressings.

8. Always ensure that all internal wirings are in accordance before re-assembling the

external casing after a repairing completed. 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.

9.

malfunction, or electrical leakage and flame, which may be hazardous.

10. Touch current check. (After completing the work, measure touch current to prevent an

electric shock.)

 Plug the AC cord directly into the AC outlet. Do NOT use an isolation transformer

for this check.

 Connect a measuring network for touch currents between each exposed metallic part

on the set and a good earth ground such as a water pipe.

Annex D

(normative)

Measuring network for TOUCH CURRENTS

Resistance values in orms (Ω).

V: Voltmeter or oscilloscope

(r.m.s. or peak reading)

Input resistance : 1 MΩ
Input capacitance : 200 pF

Frequency range : 15 Hz to 1 MHz and d.c. respectively

Note: Appropriate measures should be taken to obtain the correct value in case of non

sinusoidal waveforms.

The measuring instrument is calibrated by comparing the frequency factor of with the
solid line in figure F.2 of IEC 60990 at various frequencies. A calibration curve is
constructed showing the deviation of from the ideal curve as a function of frequency.

TOUCH CURRENT = /500 (peak value).

 The potential at any point (TOUCH CURRENT) expressed as voltage and

does not exceed the following value:

The part or contact of a TERMINAL is not HAZARDOUS LIVE if:

a) The open-circuit voltage should not exceed 35 V (peak) a.c. or 60 V d.c. or, if a) is not

met.

b) The measurement of the TOUCH CURRENT shall be carried out in accordance with

IEC 60990, with the measuring network described in Annex D of this standard.

The TOUCH CURRENT expressed as voltages and , does not exceed the
following values:

- for a.c. : = 35 V (peak) and = 0.35 V (peak);

- for d.c. : = 1.0 V

Note: The limit values of = 0.35 V (peak) for a.c. and = 1.0 V for d.c. correspond to
the values 0.7 mA (peak) a.c. and 2.0 mA d.c.

Product Safety Notice

Many electrical and mechanical parts in this chassis have special safety-related

characteristics. These characteristics are often passed unnoticed by a visual inspection and

the protection afforded by them cannot necessarily be obtained by using replacement

components rated for higher voltage, wattage, etc. Replacement parts which have these

special safety characteristics are identified in this manual and its supplements; electrical

components having such features are identified by the international hazard symbols on the

schematic diagram and the parts list.

Before replacing any of these components, read the parts list in this manual carefully. The

use of substitute replacement parts which do not have the same safety characteristics as

specified in the parts list may create electrical shock, fire, or other hazards.

SAFETY INSTRUCTION

should enter the mouth, rinse the mouth thoroughly with water. If the fluid should contact the

When attaching the LCD module to the LCD cover, position it appropriately and fasten

Handling the LCD Module

Safety Precaution

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

skin or clothing, wipe off with alcohol, etc., and rinse thoroughly with water. If the fluid

should enter the eyes, immediately rinse the eyes thoroughly with running water.

Precautions for Handling the LCD Module

CAUTION: The metal edges of the LCD module are sharp, handle it with

care.

The LCD module can easily be damaged during disassembly or reassembly; therefore,

always observe the following precautions when handling the module.

1.

at the position where the display can be viewed most conveniently.

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 polarized screen because it can easily be damaged.

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 CRT cleaner as a cleaner. Wipe off the

panel surface by drop the cleaner on the cloth. Do not drop the cleaner on the panel.

Pay attention not to scratch the panel surface.

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.

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.

7. Do not expose the LCD module to direct sunlight or strong ultraviolet rays for an

extended period of time.

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.

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.

LCD PANEL

/

/

C

C

T-COM Board

30P or 51p/1.25mm

power

CH+

CH-

VOL+

VOL-

MENU

SOURCE

715G3945

14P

2.0mm

Inverter

Board

N001

Speaker

IR+LED

CN903 CN902

Power Board

26/32:715G3714

40:715G3713

CN201

715G3730

CN128

CN408

CN701

Main Board

715G3705

CN401

Speaker

TU101
Tuner
ENV57S01D8F

IFT P/N

IFS P/N

IFC P/N

U610
DVB-C
Si2163

TS IN

IF P/N TV

To Panel

26"/32" WXGA
37"/40" FHD

PCMCIA

Side I/O

CVBS

USB

HDMI3

HDMI1

HDMI2

SCART1

SCART2

VGA

Component

SCART1/2 Audio

Component Audio

Side AV Audio

VGA/HDMI Audio

DATA/ADDR

HDMI SW

SiI9187

Half In/Monitor out

U402
EEPROM
M24C02

U128

Full In/TV out

Tx 0-2, Txc

TS In

TS Out

CVBS2

USB P/M

SCALER

MT5363

BGA522

Rx In

CVBS3
YPbPr0

VDAC_Out2

SY1/SC1
VDAC_Out2

SY0/SC0

RGB/HV

YPbPr1

AIN3/4

AIN0/1

AIN2

AIN6

AIN5

U401

U402/U403
DDR2
32MB x 16

I/O 0_7

OSCL0
OSDA0

ORESET#

ASPDIF

SCART1_Out_L/R

AL0
AR0

HP_Out_L/R HP_Out_LT/RT

AL2
AR2

AL3
AR3

SCART2_Out_L/R

AL1
AR1

U405

16MB NAND Flash

U609
EEPROM
M24C32

U410

Reset
MAX809ST

SPDIF

U604
Line Driver
DRV602

U606
HP AMP
TPA6132

SPK_Out_L/R

U605
Line Driver
DRV602

Optical

SCART1 L/R

SCART2 L/R

KEYPAD

IR

LED

KEYPAD/IR
BOARD

SCART1

Audio OUT

Side I/O

Head Phone

U602
Sound AMP
BD5444EFV

SCART2

Audio OUT

26"
5W / 8Ohm

32"/37"/42"

10W / 6Ohm

PANEL_INTEVER

KEYBOARD

(715G3945)

CN903

ON/OFF13

CN902

+24V1

+24V2

+24V3

+24V4

+24V5

GND6

GND7

GND8

GND9

GND10

NC11

DET12

DIM14

POWER BOARD
(715G3714)

KEY11

KEY22

GND3

C
N
0
0
1

ON/OFF1

NC2

DIM3

+12V4

+12V5

GND6

GND7

GND8

NC9

NC10

PS_ON11

+5V12

+5V13

ACD14

CN901

AC socket

PANEL(TCON)

CN701CN401CN128

GND1

SP_RP2

GND3

SP_LP4

GND1

LED-EPG-RED2

LED-EPG-GREEN3

LED-POWER-RED4

LED-POWER-GREEN5

+3V3SB6

GND7

OIRI8

Light Sensor9

+3V3SB10

GND11

KEY_UP_DN_DCSW12

KEY_MENU_L_R_SOURCE13

GND14

INVERTER_ON_OFF1

BRIGHT_ADJ2

+5VSB3

+5VSB4

GND5

GND6

GND7

+ 12VSB8

+ 12VSB9

AC_DET10

CN408

IRBOARD

(715G3730)

LED-EPG-green1

LED-EPG-yellow2

LED-time-green3

LED-power-off4

LED-power-on5

DV33SB6

GND7

RC68

LIGHT_SENSOR9

C
N
2

MAIN BOARD

0
1

R SPEAKER(2PIN)

(715G3705)

L SPEAKER(2PIN)

PANEL_INTEVER

KEYBOARD

(715G3945)

CN903

ON/OFF13

CN902

+24V1

+24V2

+24V3

+24V4

+24V5

GND6

GND7

GND8

GND9

GND10

NC11

DET12

DIM14

POWER BOARD
(715G3714)

KEY11

KEY22

GND3

C
N
0
0
1

ON/OFF1

NC2

DIM3

+12V4

+12V5

GND6

GND7

GND8

NC9

NC10

PS_ON11

+5V12

+5V13

ACD14

CN901

AC socket

PANEL(TCON)

CN701CN401CN128

GND1

SP_RP2

GND3

SP_LP4

GND1

LED-EPG-RED2

LED-EPG-GREEN3

LED-POWER-RED4

LED-POWER-GREEN5

+3V3SB6

GND7

OIRI8

Light Sensor9

+3V3SB10

GND11

KEY_UP_DN_DCSW12

KEY_MENU_L_R_SOURCE13

GND14

INVERTER_ON_OFF1

BRIGHT_ADJ2

+5VSB3

+5VSB4

GND5

GND6

GND7

+ 12VSB8

+ 12VSB9

AC_DET10

CN408

IRBOARD

(715G3730)

LED-EPG-green1

LED-EPG-yellow2

LED-time-green3

LED-power-off4

LED-power-on5

DV33SB6

GND7

RC68

LIGHT_SENSOR9

C
N
2

MAIN BOARD

0
1

R SPEAKER(2PIN)

(715G3705)

L SPEAKER(2PIN)