CD80 service manual?

Tomg · 18th June 2005, 04:10 PM

Does anybody actually have a copy of this I could have at all?

thanks,

Tom

Jocko Homo · 18th June 2005, 11:51 PM

I do, but have never had luck trying to scan it.

Specific question?

Jocko

Tomg · 19th June 2005, 02:01 AM

erk, no specific question I just have two of these machines to work on

One does have a problem with the switch on and off of the muting relays though...

Jocko Homo · 19th June 2005, 03:38 PM

There is a DC protection scheme that mutes the relays. Or "relais" in their parlance. It also kills the "play" LED on the front panel when the protection is activated.

Jocko

renes3 · 20th June 2005, 09:26 AM

Thanks Jocko,

I was wondering why my play led was only working for a short time, and after a while stops working

Tomg · 20th June 2005, 01:12 PM

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.

rfbrw · 20th June 2005, 02:48 PM

Quote:

Originally posted by Tomg
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.

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

Tomg · 22nd June 2005, 10:55 PM

I wish I knew how to or where to look

any pointers as to where I should be looking (part nos etc)?

Jocko Homo · 23rd June 2005, 01:58 AM

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

18th June 2005, 04:10 PM	#1
Tomg diyAudio Member Join Date: Mar 2003 Location: England	CD80 service manual? Does anybody actually have a copy of this I could have at all? thanks, Tom

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Seek help: Leader LDM-171 user manual (Service Manual)	0451ym	Parts	0	28th June 2008 04:18 PM
where to get CEC service manual?	paba	Digital Source	9	12th September 2007 12:30 PM
A5 service manual	recife	Pass Labs	2	10th February 2007 01:04 PM
Service manual	xcel	Digital Source	0	20th February 2005 11:59 AM
CD 723 Service Manual anyone ?	CheffDeGaar	Digital Source	0	6th November 2003 02:27 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

18th June 2005, 11:51 PM	#2
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	I do, but have never had luck trying to scan it. Specific question? Jocko

19th June 2005, 02:01 AM	#3
Tomg diyAudio Member Join Date: Mar 2003 Location: England	erk, no specific question I just have two of these machines to work on One does have a problem with the switch on and off of the muting relays though...

19th June 2005, 03:38 PM	#4
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	There is a DC protection scheme that mutes the relays. Or "relais" in their parlance. It also kills the "play" LED on the front panel when the protection is activated. Jocko

20th June 2005, 09:26 AM	#5
renes3 diyAudio Member Join Date: Mar 2004 Location: Uranus	Thanks Jocko, I was wondering why my play led was only working for a short time, and after a while stops working

20th June 2005, 01:12 PM	#6
Tomg diyAudio Member Join Date: Mar 2003 Location: England	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.

22nd June 2005, 10:55 PM	#8
Tomg diyAudio Member Join Date: Mar 2003 Location: England	I wish I knew how to or where to look any pointers as to where I should be looking (part nos etc)?

23rd June 2005, 01:58 AM	#9
Jocko Homo Banned Join Date: Feb 2002 Location: As far from the NOSsers as possible	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

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)