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I am so happy found this site as it consists of so many Manuls and easy to aquire. This onei s exactly what I wanted and much more as it has info on not only how to use the tuner but how to repair it as well. I will come here 1st before purchasing else where! Thanks owner-manual.com!
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Top class product, I printed it out on A3 paper and it is clear and very easy to follow.
Cheaper than buying a new radio!
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is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
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Hello.
This paper enable me, to bring this lovley Scope into Function.
Without this Page, i have no cance to make this finish.
Hans M. Knoll Germany
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I used for first time this the wheat and am very thanked
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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