Service Manual Pioneer C73

Macrom · 13th February 2006, 11:08 AM

Hello

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

I have a problem with mine.

Please use: student_fhc@web.de

Thank you very much

Kind regards
Stefan

Leolabs · 13th February 2006, 02:33 PM

What's the problem???

Macrom · 14th February 2006, 07:29 AM

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 can´t find it anymore.
It would be easier to search for if I had a schematic.

The voltages on the board are ok.

regards
Stefan

Cobra2 · 14th February 2006, 12:02 PM

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

13th February 2006, 11:08 AM	#1
Macrom diyAudio Member Join Date: Dec 2003 Location: Kronach (Bavaria)	Service Manual Pioneer C73 Hello Is there anybody who could provide me a service manual for the pioneer C73 pre-amplifier. I have a problem with mine. Please use: student_fhc@web.de Thank you very much Kind regards Stefan

14th February 2006, 12:02 PM	#4
Cobra2 DIY ! diyAudio Member Join Date: Apr 2002 Location: Stavanger, Norway	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 __________________ Ars longa, vita brevis

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13th February 2006, 02:33 PM	#2
Leolabs diyAudio Member Join Date: Dec 2004 Location: Bukit Mertajam	What's the problem???

14th February 2006, 07:29 AM	#3
Macrom diyAudio Member Join Date: Dec 2003 Location: Kronach (Bavaria)	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 can´t find it anymore. It would be easier to search for if I had a schematic. The voltages on the board are ok. regards Stefan