LG 32LH7000 Service Manual

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LD91D
MODEL : 32LH700032LH7000-ZA
North/Latin America http://aic.lgservice.com
Europe/Africa http://eic.lgservice.com
Asia/Oceania http://biz.lgservice.com
Internal Use Only
 

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CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION...

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SAFETY PRECAUTIONS
Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by      in the
Schematic Diagram and Exploded View.
It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent
Shock, Fire, or other Hazards. 
Do not modify the...

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CAUTION: Before servicing receivers covered by this service
manual and its supplements and addenda, read and follow the
SAFETY PRECAUTIONSon page 3 of this publication.
NOTE: If unforeseen circumstances create conflict between the
following servicing precautions and any of the safety precautions on
page 3 of this publication, always follow the safety precautions.
Remember: Safety...

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IC Remove/Replacement
Some chassis circuit boards have slotted holes (oblong) through
which the IC leads are inserted and then bent flat against the
circuit foil. When holes are the slotted type, the following technique
should be used to remove and replace the IC. When working with
boards using the familiar round hole, use the standard technique
as outlined in paragraphs 5 and 6...

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SPECIFICATION
NOTE : Specifications and others are subject to change without notice for improvement.
4. General specification 1. Application range
This specification is applied to the LCD TV used LD91D
chassis.
2. Requirement for Test
Each part is tested as below without special appointment.
1) Temperature :  25±5ºC (77±9ºF), CST : 40±5ºC
2) Relative Humidity :  65±10%
3) 
Power...

5. Chroma& Brightness
(1) Module optical specification
1) Stable for approximately 60 minutes in a dark environment at 25ºC
2) Operating Ambient Humidity : Min 10, Max 90 %RH
3) Supply Voltage : 24V
4) Frame Frequency : 120Hz
(2) Chroma (PSM: Vivid, Color Temperature: Cool)
- except “RGB PC Mode PSM:Standard,Color Temperature:Medium”
**The W/B Tolerance is ±0.002 for Adjustment, but for DQA ±0.015
(3) SET Optical Feature
1) General feature
* Measurement Condition: Full white/Dynamic) -> Measure the black...

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6. Component Video Input (Y, PB, PR)
NoSpecification
Remark
Resolution H-freq(kHz) V-freq(Hz)
1. 720x480 15.73  60.00  SDTV,DVD 480i
2. 720x480 15.63  59.94 SDTV,DVD 480i
3. 720x480 31.47 59.94 480p
4. 720x480 31.50  60.00 480p
5. 720x576  15.625  50.00 SDTV,DVD 625 Line
6. 720x576 31.25  50.00 HDTV 576p
7. 1280x720 45.00 50.00 HDTV 720p
8. 1280x720 44.96 59.94 HDTV 720p
9....

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8. HDMI Input (PC/DTV)
(1) DTV Mode
No Resolution H-freq(kHz) V-freq.(Hz) Pixel clock(MHz) Proposed Remark
1  720x480  15.734 /15.6  59.94 /60 27.00  SDTV 480I
2  720x480  31.469 /31.5  59.94 /60 27.00/27.03  SDTV 480P
3 720x576  15.625  50 27(54) SDTV 576
4 720x576  31.25 50 54  SDTV 576P
5 1280x720  37.500  50 74.25  HDTV 720P
6  1280x720  44.96 /45  59.94 /60 74.17/74.25  HDTV...

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ADJUSTMENT INSTRUCTION
1. Application Range
This specification sheet is applied to all of the LCD TV with
LD91D chassis.
2. Designation
1) The adjustment is according to the order which is
designated and which must be followed, according to the plan
which can be changed only on agreeing.
2) Power Adjustment: Free Voltage
3) Magnetic Field Condition: Nil.
4) Input signal Unit:...