Accuphase P300L and others Service Data - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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
Reply
 
Thread Tools Search this Thread
Old 19th April 2012, 11:44 AM   #1
diyAudio Member
 
Join Date: May 2008
Default Accuphase P300L and others Service Data

I am looking for a schematic or service manual.

Data of the mains transformer alone would be nice also,
because it is burnt.

This is not for the first time a defective transformer is
encountered on Accuphase amps or japanese gear
in general.

The german importer will not provide schematics any
more "because of sole property of Accuphase". This has
been different in the past though.

I can help with diagrams for C240 , C280 , E202 , E204 ,
E303 , E305 , P11 , P266 , P500 as paper copies, maybe
PDF later.
Edit for search engine: C-240 , C-280 , E-202 , E-204 ,
E-303 , E-305 , P-11 , P-266 , P-500

Thank you for response.

Last edited by as_audio; 30th May 2012 at 01:39 PM. Reason: Edit for ease of search engine
  Reply With Quote
Old 22nd April 2012, 06:54 PM   #2
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
I have the schematics for the P300, send me your e-mail address if you want them (two bit-map about 2.3MB).

Transformer has dual 120-100-0 primary. 54.5-47-0-47-54.5 secondary with 20-0-20 also.

I would check the voltage selector, the 10A (slo-blo) Primary fuse, and the four 2A
Secondary fuses. There may be an internal thermal fuse in the transformer (although none is shown).
__________________
Candidates for the Darwin Award should not read this author.

Last edited by djk; 22nd April 2012 at 06:56 PM.
  Reply With Quote
Old 18th May 2012, 02:12 PM   #3
diyAudio Member
 
Join Date: May 2008
Default Accuphase P300L transformer failure

A short in one of the electrolytic capacitors C28 or C29 on the
main amp boards leads to destruction of the bridge rectifier D28
and subsequent failure of the mains transformer. R76, R77 went
open on this board subsequently.

I strongly recommend to insert fuses in the two yellow transformer
leads to prevent this. 0.2 amps slow blow should be fine. The trans-
former wiring can be accessed from the bottom of the amp.

This transformer has an internal thermal fuse, but in my workshop
the defective item had an internal short, both thermal fuse and main
fuse were OK.
  Reply With Quote
Old 18th May 2012, 02:30 PM   #4
diyAudio Member
 
Join Date: May 2008
Quote:
Originally Posted by djk View Post
I have the schematics for the P300, send me your e-mail address if you want them (two bit-map about 2.3MB).

Transformer has dual 120-100-0 primary. 54.5-47-0-47-54.5 secondary with 20-0-20 also.

I would check the voltage selector, the 10A (slo-blo) Primary fuse, and the four 2A
Secondary fuses. There may be an internal thermal fuse in the transformer (although none is shown).
On the P300L the primary windings are as indicated by djk.

The secondaries are
yellow stacked 55V
red main48V
black ground
red main48V
yellow stacked55V
and
green grey green 15.5 , ground, 15.5V for meters etc.
  Reply With Quote
Old 30th May 2012, 01:41 PM   #5
diyAudio Member
 
Join Date: May 2008
Quote:
Originally Posted by as-audio View Post
A short in one of the electrolytic capacitors C28 or C29 on the
main amp boards leads to destruction of the bridge rectifier D28
and subsequent failure of the mains transformer. R76, R77 went
open on this board subsequently.

I strongly recommend to insert fuses in the two yellow transformer
leads to prevent this. 0.2 amps slow blow should be fine. The trans-
former wiring can be accessed from the bottom of the amp.

This transformer has an internal thermal fuse, but in my workshop
the defective item had an internal short, both thermal fuse and main
fuse were OK.
Please read and use 0.4 amps.
  Reply With Quote
Old 31st May 2012, 02:56 AM   #6
masood is offline masood  India
diyAudio Member
 
Join Date: Dec 2010
Location: fatehpur
Quote:
Originally Posted by djk View Post
I have the schematics for the P300, send me your e-mail address if you want them (two bit-map about 2.3MB).

Transformer has dual 120-100-0 primary. 54.5-47-0-47-54.5 secondary with 20-0-20 also.

I would check the voltage selector, the 10A (slo-blo) Primary fuse, and the four 2A
Secondary fuses. There may be an internal thermal fuse in the transformer (although none is shown).
dear sir,
me too send this schematics. my e mail is khan.shahid251@gmail.com.
thanks
  Reply With Quote
Old 18th July 2012, 04:25 PM   #7
diyAudio Member
 
Join Date: Jul 2012
Location: USA,OH
Default Accuphase p 266

I am looking for The service manual for Accuphase P 266 actualy I need it to reset the bias on my amp does anybody has this service manual ???
or know where to get one ?
  Reply With Quote
Old 7th June 2013, 12:52 PM   #8
diyAudio Member
 
Join Date: Aug 2006
Hi, as above looking for service manual or schematics for the accuphase p-266, can anyone help?

Thanks
  Reply With Quote
Old 7th June 2013, 02:50 PM   #9
diyAudio Member
 
Join Date: May 2008
Quote:
Originally Posted by reddish75 View Post
Hi, as above looking for service manual or schematics for the accuphase p-266, can anyone help?

Thanks
See post 1.
Paper copies only..
  Reply With Quote
Old 7th June 2013, 03:58 PM   #10
diyAudio Member
 
Join Date: Aug 2006
Hi as-audio just to check what information do you have on the p266 is it a service manual or is it just a schematic, do you have the bias and meter adjustment information?

Thanks

Chris
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Exchange: Accuphase service manuals HominisNocturna Swap Meet 9 6th February 2013 06:07 AM
Service manual Accuphase P-300X paul79 Everything Else 1 20th February 2012 06:46 PM
Need service manual for Accuphase E-303 shega Solid State 0 27th December 2011 02:57 PM
Service manual accuphase T 101 max29 Swap Meet 0 11th September 2006 07:32 AM
Need Service Manual for Accuphase E-203 overmind Everything Else 3 21st October 2003 12:15 PM


New To Site? Need Help?

All times are GMT. The time now is 06:55 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2