Toshiba 37HL67S User manual

SERVICE MANUAL
LCD Color Television
37HL67S Ver. 2.00
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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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
DRAMA0543 for HL series
(b) TV-MICRO EEPROM data
DRAMA0589 for HL series
(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.
Item Name of adjustment Data
HL series
R CUT R CUTOFF 00H (a)
G CUT G CUTOFF 00H (a)
B CUT B CUTOFF 00H (a)
R DRV R DRIVE 64H (a)
G DRV G DRIVE 64H (a)
B DRV B DRIVE 64H (a)
*BRTC BRIGHTNESS CENTER 78H (a)
*COLC COLOR CENTER C0H (a)
*UVTT BASE BAND TINT 80H (a)
*CNTX CONTRAST MAX FFH (a)
SHRC SHARPNESS CENTER 60H (a)
VBIS VBI Setting 64H (a)
CC Closed Caption 64H (a)
ID1 VBID 64H (a)
GG Gemstar 00H (a)
BYBK B Y OFF SET 00H (a)
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RYBK R Y OFF SET 00H (a)
OPT1 TV SET OPTION 1 00H (b)
OPT2 TV SET OPTION 2 25H (b)
OPT3 TV SET OPTION 3 00H (b)
OPT4 TV SET OPTION 4 25H (b)
OPT5 TV SET OPTION 5 01H (b)
SET ID MODEL ID *1 (b)
MAGC AGC of MTS decoder 00H (b)
VO1 Volume1 Data 5FH (b)
V25 Volume25 Data ADH (b)
V50 Volume50 Data DFH (b)
V75 Volume75 Data F9H (b)
V100 Volume100 Data FFH (b)
VOLBS Correction Volume at DTV 00H (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 1AH (b)
TONN Tone Min Data 08H (b)
BASC Bass center Data 01H (b)
TREC Treble center Data 03H (b)
EBAS Add Bass on FOCUS 00H (b)
ETRE Add Treble on FOCUS 01H (b)
WON2 Bass Reducer 11H (b)
ALS ALS point 00H (b)
ALOF Reduce in ALL (wow, TruSurround) off 01H (b)
VSTB Reduce Volume For Stable Sound 00H (b)
VS3D Reduce Volume For SRS3D 01H (b)
VFCS Reduce Volume For FOCUS 03H (b)
VTBH Reduce Volume For TruBass High 00H (b)
VTBL Reduce Volume For TruBass Low 00H (b)
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Factory preset data will be loaded after setting Model ID data.
Note: (*1) SET-ID data is subject to t e models.
Refer to Setting Panel Option Data and SET-ID Data for detail.
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.
Setting Panel Option Data and SET-ID Data
1. Panel option data is subject to OP4 and OP5.
Enter to service mode and select menu of OP4 or OP5 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.
2. W enever using new AV-TN board to t e set, set t e SET-ID data according to panel
option data.
VVDD Reduce Volume For Dolby F3H (b)
WFCS FOCUS Level 01H (b)
WWSP SRS 3D Level 02H (b)
WTBH TruBass High Level 03H (b)
WTBL TruBass Low Level 02H (b)
VOLM Volume coefficient at 1/2 Mute 32H (b)
Set Size Panel Maker OPT4 OPT3 OPT5 SET-ID
TOP Running change TOP Running change
HL47 26 CMO 33h 00h 01h A7h
HL67US 32 SAMSUNG 65h 00h 01h A8h
HL67S 37 AUO 46h 00h 01h A9h
HL67US 42 AUO 47h 00h 01h AAh
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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.
(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 : HL series not used.
(4) Revision of image file : LCD Model not used.
(5) Total brightness hour of TV. : Display 4 bytes data.
(6) Operation hour of TV in LOW mode : Display 4 bytes data.
(7) Operation hour of TV in HIGH BRIGHT mode : LCD Model not used.
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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)
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.
(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"
LED Indication Condition
1 Green and Yellow are off. Power supply OFF. (AC)
2 Green and Yellow are off. Power supply OFF. (Stand by)
3 Green is on (solid). The TV is operating properly.
4 Yellow is on (solid). Power On Mode set into the quick operation.
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The power is supplied to Digital Board only.
5 Green blinks. Fan stop detection.
6 Green blinks slowly. Abnormal operation of BUS line.
Turn the TV off and unplug the power cord, then plug the
power cord in again and turn the TV on.
7 Green blinks quickly. Power Protection Detection.
Turn the TV off and unplug the power cord, then plug the
power cord in again and turn the TV on.
8 Yellew blinks 3 times. The TV is rebooting.
Wait several seconds until the yellow LED stops blinking.
9 Green is on (solid).
Yellow is on (solid).
Upgrading in progress.
10 Green is on (solid).
Yellow is off.
Upgrading succesful.
11 Green is off.
Yellow is on (solid).
Upgrading failed.
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FUNCTION AND OPERATION
TV Front and Side Panel Control and Connection
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