Pioneer cd player pots

PIY · 22nd January 2006, 07:46 PM

I've just been given a pioneer PD-8700 cd player. The previous owner had for some reason played around with the pots so the sounds a bit off at the moment and I was wondering if anyone could advise on how to set the pots.

PIY

anatech · 22nd January 2006, 07:52 PM

Hi PIY,
The only thing you can do is send it in for service. The tech should be really good at alignment and Pioneer products. Tell them the pots have been played with.

Sorry, it's not the answer you wanted.

To get it closer right now, mark the current positions. If you gently turn the control, there should be a slight indent that you can feel at the factory position. This may or may not work.

Guess what I'm recommending. I can only hope your local service choices are good.

-Chris

wa2ise · 23rd January 2006, 04:38 AM

Get the service manual if avaliable. Then you would know what the adjustments do and how to make them.

Usually I mark the trimpots with a sharp marker pen their orginal positions before playing with them so I can return them to their orginal positions after mucking around witgh them. Pick a point where you can draw a line across the moving part to a stationary part.

PIY · 23rd January 2006, 04:24 PM

Thanks for the replies guys. Do you know where I might be able to get a copy of the service manual. Are pioneer helpful for providing these?

thanks

PIY

anatech · 23rd January 2006, 07:28 PM

Hi PIY,
Yes they are. They may make you wait.

Do you have any experience with this?

-Chris

PIY · 23rd January 2006, 08:48 PM

I've not had any experiance with cd players but have done a fair few other things. Thought I may as well have see if I can have a try myself as i doubt its really worth the cost of getting pioneer to do it.

PIY

anatech · 23rd January 2006, 08:55 PM

Hi PIY,
Fair enough. A 'scope with a time base of 0.5uS / div is recommended. The manual of course. I was hoping you'd have a friendly tech by your side to help.

Do not touch the diffraction grating adjustment in the head. It is very touchy. Read the instruction through twice at least. Mark the pot positions.

Good luck.

-Chris

PIY · 23rd January 2006, 09:09 PM

Thanks for all the advice Chris, I'll let you know what, if any, luck i have with it

PIY

anatech · 23rd January 2006, 09:14 PM

Hi PIY,
If you get confused or unclear on something. Stop and post a question.

-Chris

Reina · 23rd January 2006, 10:05 PM

hi piy,

i have a schematic for the pd 9700. please mailing me, if you interested. can tell you more tomorrow...

22nd January 2006, 07:46 PM	#1
PIY diyAudio Member Join Date: Jan 2006 Location: England	Pioneer cd player pots I've just been given a pioneer PD-8700 cd player. The previous owner had for some reason played around with the pots so the sounds a bit off at the moment and I was wondering if anyone could advise on how to set the pots. PIY

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22nd January 2006, 07:52 PM	#2
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi PIY, The only thing you can do is send it in for service. The tech should be really good at alignment and Pioneer products. Tell them the pots have been played with. Sorry, it's not the answer you wanted. To get it closer right now, mark the current positions. If you gently turn the control, there should be a slight indent that you can feel at the factory position. This may or may not work. Guess what I'm recommending. I can only hope your local service choices are good. -Chris

23rd January 2006, 04:38 AM	#3
wa2ise diyAudio Member Join Date: Apr 2005 Location: NJ	Get the service manual if avaliable. Then you would know what the adjustments do and how to make them. Usually I mark the trimpots with a sharp marker pen their orginal positions before playing with them so I can return them to their orginal positions after mucking around witgh them. Pick a point where you can draw a line across the moving part to a stationary part.

23rd January 2006, 04:24 PM	#4
PIY diyAudio Member Join Date: Jan 2006 Location: England	Thanks for the replies guys. Do you know where I might be able to get a copy of the service manual. Are pioneer helpful for providing these? thanks PIY

23rd January 2006, 07:28 PM	#5
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi PIY, Yes they are. They may make you wait. Do you have any experience with this? -Chris

23rd January 2006, 08:48 PM	#6
PIY diyAudio Member Join Date: Jan 2006 Location: England	I've not had any experiance with cd players but have done a fair few other things. Thought I may as well have see if I can have a try myself as i doubt its really worth the cost of getting pioneer to do it. PIY

23rd January 2006, 08:55 PM	#7
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi PIY, Fair enough. A 'scope with a time base of 0.5uS / div is recommended. The manual of course. I was hoping you'd have a friendly tech by your side to help. Do not touch the diffraction grating adjustment in the head. It is very touchy. Read the instruction through twice at least. Mark the pot positions. Good luck. -Chris

23rd January 2006, 09:09 PM	#8
PIY diyAudio Member Join Date: Jan 2006 Location: England	Thanks for all the advice Chris, I'll let you know what, if any, luck i have with it PIY

23rd January 2006, 09:14 PM	#9
anatech diyAudio Moderator Join Date: Jun 2004 Location: Georgetown, On	Hi PIY, If you get confused or unclear on something. Stop and post a question. -Chris

23rd January 2006, 10:05 PM	#10
Reina diyAudio Member Join Date: Jun 2005 Location: Berlin	hi piy, i have a schematic for the pd 9700. please mailing me, if you interested. can tell you more tomorrow...

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