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NO RASTER
NO SOUND
no
Is there the square waveform at
Check the part of
Digital PCB ASSY
no
Is the waveform at the collector of
Check/Replace
Q401, T401and Q402.
Check +B voltage at J306.
140V
pin4 of P101 (H-out)
yes
Q402 normal?
yes
Check/Replace
T701 and CONNECTORS.
no
Is the voltage at pin 24
of IC01 5V?
yes
Check the voltage of C834.
230~380V
Check the voltage at pin9
of IC801.
OK
Check/Replace
IC802, IC804, D810 and R832.
0V
Check/Replace IC803,
D826, 827, 828, 829, T805,
T801, 804 and Fuse (FC02).
NG
Check/Replace
D801.
Lower than 6V
Check/Replace
D802, D803, Q801 and
IC801.
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