LG_42lb1dr（la61a机芯）数字录像液晶彩电维修手册.pdf

LCD TV
SERVICE MANUAL
CHASSIS : LA61A
MODEL : 42LB1DR-UA / 42LB1DRA-UA
CAUTION
BEFORE SERVICING THE CHASSIS,
READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
CONTENTS
CONTENTS .............................................................................................. 2
PRODUCT SAFETY ..................................................................................3
SPECIFICATION ........................................................................................6
ADJUSTMENT INSTRUCTION................................................................11
SVC REMOCON ......................................................................................17
VIDEO TROUBLE SHOOTING&BLOCK DIAGRAM ..............................18
AUDIO TROUBLE SHOOTING&BLOCK DIAGRAM..............................41
EXPLODED VIEW .................................................................................. 53
EXPLODED VIEW PARTS LIST..............................................................54
REPLACEMENT PARTS LIST ............................................................... 55
SVC. SHEET ...............................................................................................
- 2 -
SAFETY PRECAUTIONS
IMPORTANT SAFETY NOTICE
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 ponents as mended in this manual to prevent
Shock, Fire, or other Hazards.
Do not modify the original design without permission of manufacturer.
General Guidance Leakage Current Hot Check (See below Figure)
Plug the AC cord directly into the AC outlet.
An isolation Transformer should always be used during the
servicing of a receiver whose chassis is not isolated from the AC Do not use a line Isolation Transformer during this check.
power line. Use a transfo