Service manual

20
TROUBLESHOOTING HINTS
4. Horizontal Output Circuit
Is the
B+line voltage
over 54V?
Is the H-out
waveform of IC501
normal?
Trouble in B+ Booster Circuit
(Check the B+section of IC501)
Trouble in IC501
Trouble in Horizontal
output circuit
(No Raster
Yes
No
Yes
Yes
Trouble in Q406 and its
ambient circuit.
No
No
Trouble in Q406 and
its ambient circuit.
11V
0V
66V
Is the Collector
waveform of
Q406 normal?