Service manual

27
10. High Voltage Output Circuit
Trouble in Q601 or FBT
Is Q601
Gate waveform
normal?
Yes
Yes
Trouble in Q603, Q604
12V Line
Is Q604, Q603
Base waveform
normal?
Yes
No
Trouble in IC601
Is IC601
pin 10
normal?
Yes
No
No
Trouble in H.V circuit
(No Raster)
Trouble in IC601
ambient circuit.
Is the
IC601 pin5 H.trigger
correct?
Yes
No
Trouble in H.trigger
Trouble in power
supply circuit
Is
175V line
voltage normal?
No