Toshiba Regza 37LX96 User manual

SERVICE MANUAL
LCD Color Television
37LX96
Ver. 1.01
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.
© TOSHI A 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 MUTE
button twice on Control.
↓
↓↓
↓
2. Press MUTE button again and old button
down.
↓
↓↓
↓
Service Mode display
3.
W ile olding t e MUTE button, press MENU
button on TV set.
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Key Function in the Service Mode
T e following key entry during display of adjustment menu provides special functions.
Selecting the Adjusting Item
Every pressing of CH button in t e service mode c anges t e adjustment items in t e
order of table below. ( button for reverse order)
SETTING ADJUSTING DATA
[ SERVICE MODE ]
ADJUSTING ITEMS AND DATA IN THE SERVICE MODE:
Note:
Selection of the adjustment items CH (on TV or remote control)
Change of the data value Volume +/ (on TV or remote control)
Adjustment menu mode ON/OFF MENU button (on remote control)
Reset the count of operating
protect circuit to "00" CALL + CH button on TV ( )
"RCUT" selection 1 button
"GCUT" selection 2 button
"BCUT" selection 3 button
"CNTX" selection 4 button
"COLC" selection 5 button
"UVTT" selection 6 button
Self diagnostic display ON/OFF 9 button
(1) T e image system data may be different for eac image format c osen. T e factory
preset data value is indicated in t e table.
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(a) HOST-MICRO EEPROM data DRMA0487
(b) TV-MICRO EEPROM data DRMA0489
(2)
Prior to c anging any board containing an EEPROM IC, t e exisiting data in eac image
format s ould be copied down as a precautionary measure.
Note:
(*1) DigitalCH (All format)
(*2) PC or 1080I/720P ColorStream/HDMI
(*3) 1080I/720P ColorStream/HDMI/DigitalCH
(*4) PC input
Item Name of adjustment Data for
HLV66 / HLV16 / LX96
Remarks
HLV66 HLV16 LX96
R CUT R CUTOFF 00H (a)
G CUT G CUTOFF 00H (a)
B CUT B CUTOFF 00H (a)
*R DRV G DRIVE 82H
(a)82H 37 only NA all LX96
85H 26 only NA NA
G DRV G DRIVE 7DH
(a)7BH 37 only NA all LX96
7EH 26 only NA NA
*B DRV B DRIVE 8BH
(a)87H 37 only NA all LX96
87H 26 only NA NA
BRTC BRIGHTNESS CENTER 79H : Sports
(a)
7BH : Standard
7BH : Movie
75H : Sports 37 26 only NA all LX96
77H : Standard 37 26 only NA all LX96
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77H : Movie 37 26 only NA all LX96
COLC COLOR CENTER C8H : Sports
(a)
A0H : Standard
90H : Movie
C0H : Sports (*1)
98H : Standard (*1)
88H : Movie (*1)
B0H : Sports (*2)
98H : Standard (*2)
88H : Movie (*2)
B8H : Sports 37 26 only NA all LX96
98H : Standard 37 26 only NA all LX96
88H : Movie 37 26 only NA all LX96
B0H : Sports (*1) 37 26 only NA all LX96
90H : Standard (*1) 37 26 only NA all LX96
80H : Movie (*1) 37 26 ony NA all LX96
A0H : Sports (*2) 37 26 ony NA all LX96
90H : Standard (*2) 37 26 ony NA all LX96
80H : Movie (*2) 37 26 ony NA all LX96
UVTT BASE BAND TINT 7AH
(a)
80H 26 only NA NA
CNTX CONTRAST MAX FFH (a)
SHRC SHARPNESS CENTER 60H : Sports
(a)
50H : Standard
40H : Movie
50H : Sports NA NA only
40H : Standard NA NA only
30H : Movie NA NA only
30H : Sports (*3)
20H : Standard (*3)
10H : Movie (*3)
00H : Sports (*4)
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00H : Standard (*4)
00H : Movie (*4)
VBIS VBI Setting F0H (a)
CC Closed Caption 84H (a)
ID1 VBID 80H : ANT1/2
(a)
88H : Others
GG Gemstar C6H (a)
*BYBK B Y OFF SET 00H (a)
*RYBK R Y OFF SET 00H (a)
OPT1 TV SET OPTION 1 43H
(b)
46H 37 only NA all LX96
OPT2 TV SET OPTION 2 02H
(b)
26H NA NA only
OPT3 TV SET OPTION 3 00H (b)
MAGC AGC of MTS decoder 00H (b)
VO1 Volume1 Data 59H (b)
V25 Volume25 Data A7H (b)
V50 Volume50 Data D9H (b)
V75 Volume75 Data F3H (b)
V100 Volume100 Data F9H (b)
Item Name of adjustment Data for
HLV66 / HLV16 / LX96
Remarks
HLV66 HLV16 LX96
VOLBS Correction Volume at DTV 06H (b)
VOLST Correction Volume at
Stereo/SAP of ATV 00H (b)
EVOL Reduce Volume For
Bassboost (Nonuse) 00H (b)
VOLX Volume Limiter For Hotel 64H (b)
BASX Bass Max Data 1AH (b)
TREX Treble Max Data 1CH (b)
TONN Tone Min Data 08H (b)
BASC Bass center Data 01H
(b)
00H 26 only NA NA
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TREC Treble center Data 03H
(b)01H 26 only NA NA
00H NA NA only
EBAS Add Bass on FOCUS 01H
(b)02H 37 26 only NA NA
00H NA NA only
ETRE Add Treble on FOCUS 00H
(b)
01H 37 26 only NA all LX96
WON2 Bass Reducer 10H (b)
ALS ALS point 00H (b)
ALOF Reduce in ALL (wow,
TruSurround) off 00H (b)
VSTB Reduce Volume For
Stable Sound 00H (b)
VS3D Reduce Volume For
SRS3D 00H (b)
VFCS Reduce Volume For
FOCUS
02H
(b)
00H NA NA only
VTBH Reduce Volume For
TruBass High 00H (b)
VTBL Reduce Volume For
TruBass Low 00H (b)
VVDD Reduce Volume For Dolby 00H (b)
WFCS FOCUS Level 02H
(b)
01H NA NA only
WWSP SRS 3D Level 03H
(b)
02H NA NA only
WTBH TruBass High Level 03H (b)
WTBL TruBass Low Level 02H (b)
VOLM Volume coefficient at 1/2
Mute 32H (b)
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Adjusting the Data
Pressing of VOLUME or
button will c ange t e value of data in t e range from 00H to
FFH. T e variable range depends on t e adjusting item.
Exit from Service Mode
Pressing POWER button to turn off t e TV once.
Self Diagnostic Function
1. Press "Recall" button on Remote Control during display of adjustment menu in t e
service mode. T is will bring up t e "S" in t e rig t corner of screen. Now press "9"
button on remote.
T e diagnosis will begin to c eck if interface among IC's is executed properly.
2. During diagnosis, t e following displays are s own.
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LED Indication
T e yellow, blue and red/green LED lig ts on t e TV (at t e bottom center of t e TV)
(1) Version information of TV MICRO : Display 1 byte data.
(2) Version information of TV MICRO
EEPROP
: Display 1 byte data.
(3) Version information of DVD MPU : HLV66, LX96 and HLV16 only (Not in used
for HL66, HL196 and LX196)
(4) Version information of DMD Engine
OEM Revision
: LCD Model not used.
(5) Version information of DMD Engine
ASIC Revision
: LCD Model not used.
(6) Total brightness hour of TV. : Display 4 bytes data.
(7) Count the integrating lighting hour of
lamp.
: LCD Model not used.
(8) Number of times of TV ON/OFF. : LCD Model not used.
(9) Temperature display of thermo Sensor.
(DMD)
: LCD Model not used.
(10) Temperature display of thermo Sensor.
(LAMP)
: LCD Model not used.
(11) DMD Engine System status : LCD Model not used.
(12) TV MICRO System status : Not used
(13) IIC BUS status
Bus line normal is "None" displayed.
When it is abnormal, the block name is
displayed as follows.
"SCL GND" (Red indication) : SCL
GND
short circuit
"SDA GND" (Red indication) : SDA
GND short circuit
"SCL SDA" (Red indication) : SCL SDA
short circuit
"NG : MTS"
"NG : APRO"
"NG : AVSW"
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indicate t e TV's status, as described below:
Note: If t e TV loses A/C power (e.g., a power outage occurs or t e power cord is
unplugged), w en power is restored, t e yellow LED will blink w ile t e TV is booting until
t e remote control is usable. T is is normal and is not a sign of malfunction.
LED Indication Condition
1 Blue is ON (solid). The TV is operating properly.
2 Yellow is ON (solid). In Power Saving mode (standby with Power On Mode Power
Saving).
3 Yellow blinks three times. The TV is in rebooting.
Check the Digital board.
4 Blue blinks slowly. Abnormal operation of BUS line.
• Check the faulty device through the self diagnostics function under SERVICE
mode.
• Does BUS line (SCL, SDA) work normally?
If the BUS line is under abnormal conditions, replace the faulty device with a
new one.
5 Blue blinks quickly. Power Protect Detection.
Check the cause that the protecting circuit of the power supply.
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FUNCTION AND OPERATION
TV Front and Side Panel Control and Connection
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