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Great PDF easy to read good info needed for replacment of belts and assembly and specs.
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complete and unabridged very good quality
easy to download.
recieved in two days.
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Awesome manual. Complete diagrams of all board assemblies as well as how to get to each part of the t.v. down to the individual screws and their locations. Get it.
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perfect copy, im very satisfied, i was need the diagram over the powersupply and
the copy was very sharp
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This is exactly the service manual I needed.
Complete with all schematics, partslists, PCB layouts and alignment instructions.
This manual covers both the T-4970 en T-488F Onkyo tuner.
TROUBLESHOOTING GUIDE
TUNER AUDIO OF DVD MODE DOES NOT APPEAR
Is there a signal in at pin 5 and 7 of CP7301 with each input ? Yes
No
Check IC801 and peripheral circuit.
Is there a signal in at pin 1, 22 and 28 of IC7303 and 56, 100, 110 of IC4001 ? Yes
No
Check IC7303, IC4009, IC4010 and peripheral circuit.
Is there a signal in at pin 1, 2 and 3 of IC7301 ?
No
Check IC4001 and peripheral circuit.
Yes
Is there a signal in at pin 7 and 8 of IC7301 ?
No
Check IC7301 and peripheral circuit.
Yes
Is there a signal in at pin 1 and 7 of IC7304 ?
No
Check IC7304 and peripheral circuit.
Yes Go to NO AUDIO ON PLAYBACK.
E-26
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