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3] MAIN PART
• MAIN CIRCUIT
A. MAIN
No Power at IC351 Pin 4,8
Is B+ applied
to PN501?
NO
Check Fuse(F501, F502)
YES
Is there a DC voltage
at the (+)terminal of
D501~D504
Replace PN 501
B. TUNER
TUNER ABNORMAL.
Is B+ applied to
R137,141?
NO
Is there a DC Voltage
at the Q517,518
YES
Replace IC101
YES
Check Q501,502 and Q503
Replace D501~D504
NO
Check IC101,102
YES
Check Q510,511
NO
- 2-9 -
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