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32LH70YR-TA Schematic ( Datenblatt PDF ) - LG

Teilenummer 32LH70YR-TA
Beschreibung LCD TV SERVICE MANUAL
Hersteller LG
Logo LG Logo 

Gesamt 29 Seiten
		
32LH70YR-TA Datasheet, Funktion
North/Latin America
Europe/Africa
Asia/Oceania
Internal Use Only
http://aic.lgservice.com
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LCD TV
SERVICE MANUAL
CHASSIS : LP91D
MODEL : 32LH70YR 32LH70YR-LA/TA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.






32LH70YR-TA Datasheet, Funktion
SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
1. Application range
This spec sheet is applied to LCD TV used LP91D chassis.
2. Specification
Each part is tested as below without special appointment.
3. Test method
1) Performance: LGE TV test method followed
2) Demanded other specification
- Safety: CE, IEC specification
- EMC : CE, IEC
1) Temperature : 25±5ºC (77±9ºF), CST : 40±5ºC
2) Relative Humidity : 65±10%
3) Power Voltage : Standard input voltage(100~240V@50/60Hz)
* Standard Voltage of each products is marked by models.
4) Specification and performance of each parts are followed
each drawing and specification by part number in
accordance with BOM.
5) The receiver must be operated for about 5 minutes prior to
the adjustment.
4. Electrical specification
4.1. General Specification
No Item
Specification
1 Screen Size
32” wide Color Display Module
2 Aspect Ratio
16:9
3 LCD Module
32” TFT WUXGA LCD
4 Operating Environment Temp.: 0 ~ 40 deg
Humidity : 0 ~ 80 %
5 Storage Environment Temp.: -20 ~ 60 deg
Humidity : 0~ 85 %
6 Input Voltage
AC100-240V~, 50/60Hz
≤ 180 W
32” FHD, 100Hz
7 LDC Module
FHD
760 x 450 x 48
(Maker : LGD)
0.36375 x 0.36375
Measurement
Remark
Resolution : 1920*1080
FHD
Coating
3H
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
-6-
LGE Internal Use Only

6 Page







32LH70YR-TA pdf, datenblatt
4.5. Check SW Version
(1) Method
1) Push In-star key on Adjust remote-controller.
2) SW Version check
Check “SW VER : V3.xx” – LH70
5.2. Adjustment of White Balance
: (For automatic adjustment)
5. PCB assembly adjustment method
5.1. Input Area-Option
(1) Profile : Must be changed the Area option value because
being different of each Country’s Language and
signal Condition.
(2) Equipment : adjustment remote control.
(3) Adjustment method
- The input methods are same as other chassis.(Use IN-
START Key on the Adjust Remocon.)
Refer to Job Expression of each main chassis ass’y
(EBTxxxxxxxx) for Option value.
* White Balance Adjustment
- Purpose : Adjust the color temperature to reduce the
deviation of the module color temperature.
- Principle : To adjust the white balance without the saturation,
Fix the one of R/G/B gain to 192 (default data)
and decrease the others.
- Adjustment mode : Three modes – Cool / Medium / Warm
- Required Equipment
1) Remote controller for adjustment
2) Color Analyzer : CA100+ or CA-210 or same product -
LCD TV( ch : 9 ),
(should be used in the calibrated ch by CS-1000)
3) Auto W/B adjustment instrument(only for Auto adjustment)
* LP91A~D Support RS-232C & I2C DDC Communication-
White Balance Mode.
(1) Enter the adjustment mode of DDC
- Set command delay time : 50ms
- Enter the DDC adjustment mode at the same time heat-
run mode when pushing the power on by power only key
- Maintain the DDC adjustment mode with same condition
of Heat-run => Maintain after AC off/on in status of Heat-
run pattern display)
(2) Release the DDC adjustment mode
- Release the adjust mode after AC off/on or std-by off/on
in status of finishing the Hear-run mode
- Release the Adjust mode when receiving the aging off
command(F3 00 00) from adjustment equipment.
- Need to transmit the aging off command to TV set after
finishing the adjustment.
- Check DDC adjust mode release by exit key and release
DDC adjust mode)
(3) Enter the adjust mode of white balance)
- Enter the white balance adjustment mode with aging
command (F3, 00, FF)
* Luminance min value is 150cd in the Cool/Medium/Warm
mode(For LCD)
5.3. Adjustment of White Balance
(for Manual adjustment)
(1) Color analyzer(CA100+, CA210) should be used in the
calibrated ch by CS-1000
(2) Operate the zero-calibration of the CA100+ or CA-210,
then stick sensor to the module when adjusting.
(3) For manual adjustment, it is also possible by the following
sequence.
1) Select white pattern of heat-run by pressing “POWER
ON” key on remote control for adjustment then operate
heat run longer than 15 minutes. (If not executed this
step, the condition for W/B may be different.)
2) Push “Exit” key.
3) Change to the AV mode by remote control.
4) Input external pattern (85% white pattern)
5) Push the ADJ key -> Enter “0000” (Password)
6) Select “3. W/B ADJUST”
7) Enter the W/B ADJUST Mode
8) Stick the sensor to the center of the screen and select
each items (Red/Green/Blue Gain and Offset) using
D/E(CH +/-) key on R/C..
9) Adjust R/ G/ B Gain using F/G(VOL +/-) key on R/C.
10) Adjust three modes all (Cool / Medium / Warm) : Fix
the one of R/G/B gain and change the others
11) When adjustment is completed, Enter “COPY ALL”.
12) Exit adjustment mode using EXIT key on R/C.
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 12 -
LGE Internal Use Only

12 Page


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