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3-5. VIDEO CIRCUIT B
No sound in the playback mode after in the record mode.
A.EE MODE PIcture N.G
Is video signal input into pin 12 and 13 of IC151? YES NO Check PIF circuit and A/V jack.
Is the signal applied to pin 16 of IC201? YES
NO
Check circuit adjacent to IC151.
Is E12V supplied to pin 16 of IC151 YES
NO
Check ever 12V
Is 5V applied to pin 24 of IC201? YES
NO
Check IC601.
Is signal output from pin 14 of IC151? YES
NO
Check IC151 and adjacent circuit.
Is there output at pin 21 of IC201? YES
NO
Check IC201.
Is signal input into pin of IC301?
31
NO
Check connector and PCB pattern
YES
Does T201 oscillate?
NO
Is the voltage above 10V at pin 3 of T201 YES
NO
Check Q202 and T201.
Is signal output from pin 28 of IC301?
NO
Is 5V supplied to pin 24 and 29 of IC301? YES
NO
Check power circuit
YES Check Q201 collector:above 10V Base:0V YES Check T201 NO Check Q201.
YES Check IC301 pin 4 EE(L)/PB(H) H L Check IC601 29 pin
Change IC301
Is record current 3.0mVms? YES
NO
Adjust Record current.
Is signal input from ICS01 10 pin?
NO
Check pattern, connector and Q312.
YES
YES
Is 0V applied to pin 1 of IC201? YES
NO
Check IC201.
Is signal output from ICS01 8 pin? YES
Check osd circuit
Clean HEAD. RF out Line out
27
28
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