CD80 service manual?

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Tomg

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Joined 2003
Well I have one machine which works perfectly, the muting relays function as they should, turn the player on, couple of seconds later and they click.

On the other machine the relays click as soon as you turn the machine on, you get pops on the output and then when you turn it off, you again get pops and half a second later the relays cut in. It almost seems to be working in the opposite way to how it should be.
 
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rfbrw

Member
Joined 2001
Tomg said:
Well I have one machine which works perfectly, the muting relays function as they should, turn the player on, couple of seconds later and they click.

On the other machine the relays click as soon as you turn the machine on, you get pops on the output and then when you turn it off, you again get pops and half a second later the relays cut in. It almost seems to be working in the opposite way to how it should be.
Click to expand...


DC on the output perhaps ? Duff IC, leaky cap? Check the usual suspects.
 
Jocko Homo

Jocko Homo

RIP
Joined 2002
It uses a servo, and not coupling caps.

Servo: LM308......#s 6390, 6391..........goes to buffer/LPF '5532............# 6393. (One buffer does both channels.)

Connects to I/V stage '5534...........#s 6384, 6385. Pin 2 on both.

Pin 6 of output '5534......... #s 6386, 6387.......should be 0 V DC.

Hope that helps some
Jocko
 
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