LG 29FU1RL/RG Service Manual page 11

3) No Raster (2/2)
522
Check/ Replace
IC501
Check/ Replace
522
Q402
Check/ Replace
T401
522
Check/ Replace
Q401
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Only for training and service purposes.
Check the B + at D829
cathode
Normal
Is the voltage each
pin voltage of IC501
Check the in/out of
r e g u l a t o r ( I C 8 2 3 ,
Check pin 20 of
IC824, IC827)
IC501(H_Out)
tu2522
Check Q402
collector waveform
tu2522
Check T401 & each
pin voltage
Check Q401collect
waveform
tu2522
Check & Replace
T402
Abnormal
NO
Check Fuse of AC line
OK
Check the voltage of
C832
tu2522
Check the voltage
pin4 of IC810
tu2522
Check/ Replace
IC810, IC802, Q830
NO
Check Fuse and Diode of secondary
tu2522
Load of SMPS trans(T801)
OK
Check/ Replace IC501
- 11 -
OPEN
Check/ Replace Fuse
NO
Check/ Replace DB801
NO
Check/ Replace Fuse and IC810
LGE Internal Use Only
tu25
tu25
tu25