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Old 13th February 2006, 11:08 AM   #1
Macrom is offline Macrom  Germany
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Default Service Manual Pioneer C73


Is there anybody who could provide me a service manual for the pioneer C73 pre-amplifier.

I have a problem with mine.

Please use:

Thank you very much

Kind regards
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Old 13th February 2006, 02:33 PM   #2
Leolabs is offline Leolabs  Malaysia
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What's the problem???
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Old 14th February 2006, 07:29 AM   #3
Macrom is offline Macrom  Germany
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Hi Leolabs

There is no output signal on the PreOut jacks.

When ich apply an input on any source inputs I can pursue the signal till the uPD6362 IC.
After that I canīt find it anymore.
It would be easier to search for if I had a schematic.

The voltages on the board are ok.

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Old 14th February 2006, 12:02 PM   #4
Cobra2 is offline Cobra2  Norway
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Default Pioneer

If it is anything similar to the C-90, there are a lot of relays that often fail with age...
You may also check the switching function in the phone-plug (some pre-amps mutes the main-output when plugging in).

Arne K
Don't believe everything you think...
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