Toshiba Regza 32WLT68 User manual

SERVICE MANUAL
LCD Color Television
32WLT68
Ver. 1
This model is classified as a green product
(*1), as indicated by the underlined serial number.
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
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GREEN PRODUCT PROCUREMENT
The EC is actively promoting the WEEE & RoHS Directives that define standards for
recycling and reuse of Waste Electrical and Electronic Equipment and for the Restriction of
the use of certain Hazardous Su stances. From July 1, 2006, the RoHS Directive will
prohi it any marketing of new products containing the restricted su stances.
Increasing attention is given to issues related to the glo al environmental. Toshi a
Corporation recognizes environmental protection as a key management tasks, and is doing its
utmost to enhance and improve the quality and scope of its environmental activities. In line
with this, Toshi a proactively promotes Green Procurement, and seeks to purchase and use
products, parts and materials that have low environmental impacts.
Green procurement of parts is not only confined to manufacture. The same green parts used
in manufacture must also e used as replacement parts.
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LEAD-FREE SOLDER
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-
free solder must
be used in the servicing and repair of this product.
The melting temperature of lead-free solder is higher than that of leaded solder by 86ºF to
1 4ºF (3 ºC to 4 ºC). Use of a soldering iron designed for lead-based solders to repair
product made with lead-
free solder may result in damage to the component and or PCB being
soldered. Great care should be made to ensure high-quality soldering when servicing this
product especially when soldering large components, through-hole pins, and on PCBs as the
level of heat required to melt lead-free solder is high.
WARNING: This product is manufactured usin lead free solder.
DO NOT USE LEAD BASED SOLDER TO REPAIR THIS PRODUCT!
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IMPORTANT NOTICE
A Known Malfunction
Autodesk® DWF™ iewer version
(Free software provided through WEB)
Use Autodesk DWF Viewer ver. 6.0.
Through WEB, ver. 6.5 has been re eased but with it, the inking function in this manua may
not work proper y.
If ver. 6.5 has been insta ed, uninsta it and reinsta ver. 6.0.
To get ver. 6.0, c ick the icon, or contact to the nearest Toshiba Service Centre for further
assistance.
Freezing windows opened
(Cannot close the open windows)
This may happen occasiona y.
In case of encountering this, fo ow the procedure be ow.
1. Press [Ctr ], [A t] and [De ete] keys at the same time to engage windows security
windows.
2. Then, choose TASK manager and App ication tab, and se ect TOSHIBA SERVICE
MANUAL-Microsoft Internet Exp orer.
3. C ick TASK-end.
Main Window back forwarded
The rea cause has not been found yet but with this condition, nothing disturbs the service
manua operation.
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Continue to use by operating the windows.
Precaution when opening the diagrams
Whi e opening the diagrams, the menu in the eft frame changes its co or to GRAY. This is
an indication that the viewer is processing.
With this condition, the menu indication co or may stick to the GRAY co or or Windows
may freeze if c icking other menu.
To avoid such things, do not operate any others whi e menu turns GRAY co or.
If entering this, re-open the service manua or refresh the eft frame.
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IMPORTANT NOTICE
User Guide
Autodesk® DWF™ Viewer is necessary to view drawings and to activate the functions of
this system. Please download and install.
When Windows XP P2 is used, pop-up windows are limited by the enhanced security
function and this sample may not work. In that case, perform the Internet Explorer setting
using the following procedure to restore normal operation.
. Windows version check
[My Computer (right-click)] - [Properties]
2. Internet Explorer setting
[Tools] - [Internet Options]
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Operating Environment
PC : Pentium III or higher recommended
Monitor : 024 x 768 or higher resolution recommended
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Note:
In case of using this service manual with network connection, allocate its folder to the client
PCs as network drive to avoid any possible malfunction.
Or in case of accessing it through WEB site, the small pop-up window appears at the left
bottom corner on the screen whenever searching the location links. This is not malfunction.
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 earch 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. 
ignal 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. 
Mouse : A mouse with wheel recommended
OS : Microsoft Windows 2000/XP
Browser : Microsoft Internet Explorer 6.0 or later
Drawing viewer : Autodesk DWF Viewer 6.0
* Use the software following respective license terms and conditions.
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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. 
pecified 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). 
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IMPORTANT NOTICE
WARNING:
You are requested that you shall not modify or alter the information or data
rovided herein without rior written consent by Toshiba. Toshiba shall not
be liable to anybody for any damages, losses, ex enses 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, ex enses or costs, if
any, incurred in connection with or as a result of use of any information or
data rovided herein.
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ADJUSTMENT
Service Mode
Entering to Service Mode
1. Set VOLUME to minimum and press
button once on remote control.
↓
↓↓
↓
2. Press button again and hold button down.
↓
↓↓
↓
Service Mode display
3. hile holding the button, press MENU
button on TV set.
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Displaying the Adjustment Menu
Press MENU button on TV.
Key Function in the Service Mode
The following key entry during display of adjustment menu provides special functions.
Service Mode
Press ↑
↑↑
↑ ↓
↓↓
↓ Press
Adjustment Mode
AUTION: Never try to perform initialization unless you have changed the
memory I .
button (on remote control)
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Selecting the Adjusting Item
Every pressing of CH button in the service mode changes the adjustment items in the
order of table below. ( button for reverse order)
SETTING & ADJUSTING DATA
[ SERVI E MODE ]
ADJUSTING ITEMS AND DATA IN THE SERVI E MODE:
Note:
The image system data of RCUT-BDRV is different by each image format.
The PAL value is indicated in the table.
Never adjust H.POS and V.POS except PAL/ IDE mode.
Test signal selection
Selection of the adjustment items CH (on T or remote control)
Change of the data value olume +/- (on T or remote control)
Adjustment menu mode ON/OFF MENU button (on T )
Initialization of the memory (QA02) CALL + CH button on T ( )
Reset the count of operating
protect circuit to "00" CALL + CH button on T ( )
Turn off I2C bus communication CALL + CH button on T ( )
"RCUT" selection 1 button
"GCUT" selection 2 button
"BCUT" selection 3 button
"CNTX" selection 4 button
"COLC" selection 5 button
"U TT" selection 6 button
Automatic A/D Adjustment
(PC, Component, Composite (PAL, NTSC)) 7 button
Self diagnostic display ON/OFF 9 button
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Item Name of adjustment
RCUT R CUT OFF
GCUT G CUT OFF
BCUT B CUT OFF
RDR R DRI E
GDR G DRI E
BDR B DRI E
BRTC BRIGHTNESS CENTER
COLC COLOR CENTER
U TT BASE BAND TINT
CNTX CONTRAST MAX
OLUX MAX OLUME LIMITED
PLLW0 PLL WAIT TIME
PLLW1 PLL WAIT TIME
PLLW2 PLL WAIT TIME
PLLW3 PLL WAIT TIME
PLLW4 PLL WAIT TIME
PLLW5 PLL WAIT TIME
OPT1 T SET OPTION 1
OPT2 T SET OPTION 2 (HOTEL MODE)
OPT3 T SET OPTION 3
OPT4 T SET OPTION 4 (PANEL OPT DATA)
OPT5 T SET OPTION 5 (PANEL OPT DATA)
OPT6 T SET OPTION 6 (HOTEL MODE)
OPT7 T SET OPTION 7 (HOTEL MODE)
OPT8 T SET OPTION 8 (HOTEL MODE)
T OP T SET OPTION
ID MODEL ID
BDWID BORDER WIDTH FOR EXACT SCAN
BDHIT BORDER HEIGHT FOR EXACT SCAN
FPLG MASK_ENABLE (SD/HD)
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Factory preset data will be loaded after setting Model ID data.
(Refer to Initialization of Memory Data of QA02 and setting data of signal board.)
Adjusting the Data
Pressing of VOLUME +/- button will change the value of data in the range from 00H to
FFH. The variable range depends on the adjusting item.
I2 Bus Off
Turn off I2C communication between IC700 and IC400.
1) Press and hold the CALL button on the remote control, then press the Volume button
on the TV.
2) Display "BUS Off" OSD.
3) I2C communication turned off.
Note:
To return Bus on status, press and hold the CALL button on the remote control, then press
the Volume button on the TV again. TV will be turned off and automatically turned on,
then status will be Bus On.
Setting TVOP
Enter to service mode and select menu of TVOP by pressing P or P during display of
adjustment menu. After selecting TVOP, press + or - to set I2C check function to
disable or enable as below.
FPLG2 Channel LOGO ector Clip SW (SD)
FPLG3 Channel LOGO ector Clip SW (HD)
TVOP FUN TION DES RIPTION 1 0 (Normal)
D5 (bit5) I2C check between IC700 and IC400. (WDT) Disable Enable
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Setting Panel Option Data
Panel option data is subject to OP4 and OP5.
Enter to service mode and select menu of OPT4 or OPT5 by pressing P or P during
display of adjustment menu. After selecting OPT4 or OPT5, press + or - to set OPT4
or OPT5 value as table below.
Panel option data
OP4
Ex. OPT4 value 0xB7 is for 42 inches CMP made 1080p panel.
OP5
Series Model name Panel vendor OPT4 value OPT5 value
WL68 EU Ready 32WL68P AUO 0x45 0x11
37WL68P AUO 0x46 0x11
EU/UK Digital 32WLT68 AUO 0x45 0x11
37WLT68 AUO 0x46 0x11
42WLT68 AUO 0x47 0x11
OPT4
D7
(bit7)
D6
(bit6)
D5
(bit5)
D4
(bit4)
D3
(bit3)
D2
(bit2)
D1
(bit1)
D0
(bit0)
Panel
vender
LPL - 0 0 1 - - - -
SHP - 0 1 0 - - - -
CMO - 0 1 1 - - - -
AUO - 1 0 0 - - - -
Inch size 26 - - - - 0 0 1 1
32 - - - - 0 1 0 1
37 - - - - 0 1 1 0
42 - - - - 0 1 1 1
47 - - - - 1 0 0 0
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Exit from Service Mode
Pressing PO ER button to turn off the TV once.
Initialization of Memory Data of QA02 and setting data of signal board.
After replacing QA02 or signal board, the following initialization is required.
1) Enter the service mode.
2) Select menu of ID by pressing P or P during display of adjustment menu in the
service mode.
3) Change ID data into MODEL ID to initialize by pressing + or -., refer to table
below.
4) Press and hold the CALL button on the remote control, then press the CHANNEL
button on the TV.
5) Initialization progress dialog including model name and panel vender is shown.
OPT5
D7
(bit7)
D6
(bit6)
D5
(bit5)
D4
(bit4)
D3
(bit3)
D2
(bit2)
D1
(bit1)
D0
(bit0)
AUO Panel PM A - - 0 - - - - -
AM A - - 1 - - - - -
100 Hz Drive Off - - - 0 - - - -
On - - - 1 - - - -
Panel
Resolution
WXGA - - - - 0 0 0 1
1080p - - - - 0 0 1 0
AUTION: Never attempt to initialize the data unless QA02 has been
replaced.
Whenever using new signal board to the set, setting the Model ID data
according to Panel option data.
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Progress status is " RITING".
6) Progress status is changed "OK" and power cycle (automatically). Then QA02
initialization has been completed.
7) Enter the service mode and select version check mode. Confirm if model name and
model id set is correct. If not, repeat steps 1) to 6).
Note:
In case initialization by setting wrong MODEL ID is done, there is a possibility of
abnormal display.
8) Set I2C check function of TVOP to enable.
9) Check the picture carefully. If necessary, adjust any adjustment item above.
Perform "Auto tune" on the ownerЃfs manual.
MODEL ID (HEX)
Europe
Model name Panel vender
0x01 32WLT68 AUO
0x02 37WLT68 AUO
0x03 42WLT68 AUO
0x04 32WL68P AUO
0x05 37WL68P AUO
0x06
0x07
0x08
0x09
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x18
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Test Signal Selection
Every pressing of button on the remote control changes the built-in test patterns on
screen as described below in Service Mode.
0x19
0x20
0x21
0x22
0x23
0x24
0x25
0x26
0x27
0x28
0x29
0x30
0x31
0x32
0x33
Picture Signal
Red raster
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Self Diagnostic Function
1. Press "9" button on remote control during display of adjustment menu in the service
mode. The diagnosis will begin to check if interface among IC's is executed properly.
2. During diagnosis, the following displays are shown.
Green raster
Blue raster
All Black
All White
(1) Firmware :
Version information of microprocessor
Series name (AAAA) and market area (BB) and software program version (0000)
(2) Time : Total hour of turn the TV on. (Unit : H)
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