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Excellent manual, detailed, very useful! Exactly what I needed, I'd recommend it to all who need it. Although images are scanned easily readable and explicit. A valuable tool product at a price more than modest, take it with confidence and you will not regret it!
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Clear and complete service manual. Easy now to restore my old Kenwood KD-1500.
Thanks a lot.
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Thanks for this "hard to find" service manual. This Sony PS212A is a very good turntable that needed to be restored !
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Excellent quality on these manuals. Same as having the original printed manual and incredibly useful when doing a custom install like me. Keep it up on the good work.
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This is an excellent information source. Great quality and tons of info regarding technical service for the Technics SH8065.
NO.22 FLOW CHART NO.23
(E-E mode is normal). Replace IC651. terminal voltage (REC AGC. ADJ.) pin(37) Is the pin(29) of IC651 about 3.7V? Is there signal inputted at each of IC651 normal? terminal of IC651 as shown in table? NO
YES Check Hi-Fi REC CTL line. NO L-ch R-ch NO YES
No E-E heard. Hi-Fi sound cannot be recorded
record FM signal output the pins(21) Is voltage 5V applied to pin(25) of IC651.
NO Check the peripheral circuit of rear (24) (ch-1)/pins(21) and (22) (ch-2) of IC651?
input terminal. Tuner audio terminal pin(48) Tuner? Check the AH-MZ connector.
YES NO Is there SIF signal from pin(24) of Check line of Hi-Fi 5V.
Rear input terminal pin(14) pin(9) NO
YES
Is voltage applied to pin(40) NO Check the regulator circuit of Hi-Fi 5V IC651, 9V applied to pin(58). and PC 9V.
FLOW CHART NO.24 (E-E mode is normal). Replace IC651.
NO
YES Hi-Fi sound cannot be played back
Are serial data and clock signal at NO Check line between pins(43), (42) of YES pins(43), (42) IC651 and pins(17), (18) IC701. playback envelope signal output to Is A-H.SW.P input into the pin(27) of IC651?
pins(29) and (30) of IC651? (300 mVp-p) NO
YES Check A-H.SW.P. line from the pin(27) of
YES NO Check line between pin(36) of IC651
Replace IC651. IC651 to the pin(26) of IC701.
Is "L" level applied at pin(36) of IC651? and pin(21) of IC701.
FLOW CHART NO.25
NO
47
Recording in linear audio is impossible (Hi-Fi E-E mode is normal). Is Sub carrier signal (3.58MHz, about
YES
Is "H" level applied at pin(28) of IC651? 900mVp-p) input to pin(45) of IC651?
NO to the pin(8) of IC201. YES
NO Check line between the pin(61) of IC651 Is audio signal input into the IC201 pin(8)? YES
Check line between emitter of Q501 NO Check the periphery pin(99) of IC201. (R617)
and pin(28) of IC651.
YES
Is the pin(99) of IC201 in "L" level? Does operate Check the bias oscillation circuit (T601, Q602,
YES RF output terminal : Is there audio signal outputted at pin(59) of IC651? NO
Line output terminal : Is there audio signal outputted at pins(53) and (57) of IC651? normally? Q603).
NO YES
Is audio on which bias signal is
superposed output to the pin(4) of IC201?
Replace IC651. YES
Check the AA-MH harness and A/C head.
Line output terminal : Check line ranging from pins(53) and (57) of IC651 to the audio
output terminal.
RF output terminal : Check line ranging from pin(59) IC651 to pin(2) of tuner (TU101).
VC-A411M VC-H811M
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