LG 32lc42 Service Manual

R

LCD TV
SERVICE MANUAL
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CHASSIS : LP78A
MODEL : 32LC41/4R32LC41/4R-ZA
MODEL : 32LC4232LC42-ZC
MODEL : 32LC4332LC43-ZA/ZE
MODEL : 32LC4432LC43-ZB
website:http://biz.LGservice.com
 

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CONTENTS
CONTENTS ...............................................................\
............................... 2
SAFETY PRECAUTIONS ........................................................................\
..3
SPECIFICATION ........................................................................\
................6
ADJUSTMENT INSTRUCTION .................................................................9
TROUBLE SHOOTING ........................................................................\...

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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 Replacement Parts List. 
It is essential that these special safety parts should be replaced with \
the same components as recommended in this manual to pr event
Shock, Fire, or other Hazards. 
Do not modify the original design without permission of manufacturer.

General Guidance
An  isolation Transformer should...

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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 First.
General Servicing Precautions
1.  Always unplug the receiver AC power cord from the AC power source before;
a....

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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 above.
Removal
1.  Desolder and straighten each IC lead in one operation by gentlyprying up on the lead with the...

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1. Application range
This specification is applied to LP78A chassis.
2. Requirement for Test
Testing for standard of each part must be followed in below
condition.
(1) Temperature : 25 ± 5°C(77 ± 9°F), CST : 40 ± 5°C
(2) Humidity : 65% ± 10%
(3) Power : 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...

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5. Model Specification(EU)
Remark
Full Scart 1EA, Harf 1EA
Side AV
Side AV S-Video Priority
L/R Input(PC 1EA,SCART 2EA, SIDE AV 1EA, Component 1EA)
Specification
EU
PAL BG/DK, PAL I/II, SECAM L/L’ BAND PAL
VHF/UHF C1_C69 CATV S1_S47
Upper Heterodyne
PAL, SECAM, NTSC
PAL, SECAM, NTSC
PAL, SECAM, NTSC
Y/Cb/Cr, Y/ Pb/Pr
RGB-PC
HDMI-DTV
PC Audio, AV (3A), Component (1EA)
Item
Market
Broadcasting system
Available Channel
Receiving system
SCART Input(2EA)
Video Input (1EA)
S-Video Input (1EA)
Component...

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8. HDMI input (DTV)
V-freq(kHz)
60.00
59.94
50.00
59.94
60.00
50.00
59.94
60.00
50.00
59.94
60.00
50.00
59.9460
50 Proposed
SDTV, DVD 480I(525I)
SDTV, DVD 480I(525I)
SDTV, DVD 576I(625I) 50Hz
SDTV 480P
SDTV 480P
SDTV 576P 50Hz
HDTV 720P
HDTV 720P
HDTV 720P 50Hz
HDTV 1080I
HDTV 1080I
HDTV 1080I 50Hz
HDTV 1080P
HDTV 1080P
HDTV 1080P 50Hz
H-freq(kHz)
15.75
15.73
15.625 31.47
31.50
31.25
44.96
45.00
37.50
33.72
33.75
28.125
67.432 67.5
56.250
Resolution
720*480
720*480
720*576
720*480
720*480
720*576...

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ADJUSTMENT INSTRUCTION
1. Application Range
This spec sheet is applied all of the 26/32/37/42” LCD
TV(LP78A) by manufacturing LG TV Plant all over the world.  
2. Specification
1) Because this is not a hot chassis, it is not necessary to usean isolation transformer. However, the use of isolation
transformer will help protect test instrument.
2) Adjustment must be done in the correct order.
3) The adjustment must be performed in the circumstance of 25±5°C of temperature and 65±10% of relative...

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=> Select the Bootloader.bat file(install > VCTP_download >Bootloader)
=> Push OK
=> Finish the program, after saving the file download_cs.vi2c (if you click     ,  the massage appears automatically)
4.2. S/W program download
(1) Download method 1 (PCB Ass’y)
1) Connect the download jig to D-sub jack
2) Execute ‘Download.vi2c’ program in PC, then a mainwindow will be opened 3) Double click the blue box and confirm Bootloader
Version as 42.
4) Click the Erase Flash button
5) Double click the...