Nakamichi PA-7A II Service Manual - 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 2nd June 2008, 08:40 PM   #1
diyAudio Member
 
Join Date: May 2008
Default Nakamichi PA-7A II Service Manual

Recently acquired one of these little gems, and am looking for the service manual. I've come up with a manual for the original PA-7 (happy to provide to anyone that would like it), but not the later model II. Would much appreciate it if anybody has one. Thanks in advance! - Ziggy
  Reply With Quote
Old 3rd June 2008, 04:55 AM   #2
thejohn is offline thejohn  South Africa
diyAudio Member
 
Join Date: Mar 2005
Location: Cape Town, South Africa
www.user-manuals.com have it. I got mine there. Was $14.99 for service manual and $9.99 for user manual. Scan quality is good.
  Reply With Quote
Old 3rd June 2008, 04:47 PM   #3
diyAudio Member
 
east electronics's Avatar
 
Join Date: Jan 2006
Location: Athens GREECE
I DLIKE TO HAVE IT IF YOU FEEL LIKE ...............

i am in love with all these projects ..................thanks
__________________
SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
  Reply With Quote
Old 3rd June 2008, 06:08 PM   #4
diyAudio Member
 
zeonrider's Avatar
 
Join Date: Mar 2004
Location: Belgrade RS
Default Hi!

Who want ,I'll send!

Leave Email A.

Regards zeoN_Rider
  Reply With Quote
Old 3rd June 2008, 06:57 PM   #5
diyAudio Member
 
zeonrider's Avatar
 
Join Date: Mar 2004
Location: Belgrade RS
Default Hi!

What is the diff. PA-7 & PA-7A,PA-7E?

Regards zeoN_Rider
  Reply With Quote
Old 3rd June 2008, 07:01 PM   #6
diyAudio Member
 
Join Date: May 2008
Sorry Zeonrider, I'd email you but I can't email from the forum since I'm still 'under moderation'. If you can leave your email address in the thread that would be helpful. Thanks.
  Reply With Quote
Old 3rd June 2008, 07:18 PM   #7
diyAudio Member
 
zeonrider's Avatar
 
Join Date: Mar 2004
Location: Belgrade RS
Default Hi!

linkxp@sezampro.yu

Regards zeoN_Rider
  Reply With Quote
Old 3rd June 2008, 08:18 PM   #8
diyAudio Member
 
Join Date: May 2008
The PA-7 and the PA-7E were the first models, 200WPC (8 ohms). The PA-7 was for North America and Australia, and the 'E' model for Europe. The differences were in the power supply section to accomodate local differences and compliance requirements. The same for the PA-7A II and the PA-7E II, but the 'II' model was an 'updated' model with 225WPC (8 ohms). Still a STASIS design and all. So basically you have models for 110V and for 240V, and original and 'updated' versions. This is why I need the service manual: to determine just what the differences are. Comparing the schematics and parts lists should be informative.
  Reply With Quote
Old 3rd June 2008, 08:44 PM   #9
diyAudio Member
 
zeonrider's Avatar
 
Join Date: Mar 2004
Location: Belgrade RS
Default Hi!

Sorry I, have PA-7 SM.

I, found differences, lok on the pisture!

Regards zeoN_Rider
Attached Images
File Type: jpg 1-1.jpg (73.0 KB, 207 views)
  Reply With Quote
Old 3rd June 2008, 09:42 PM   #10
diyAudio Member
 
Join Date: May 2008
Interesting. That may be a picture of the protection circuit modifications that were apparently done to some PA-7s, and supposedly incorporated into the PA-7 II models.

Differences I *have* found by comparing brochures is that the PA-7 is listed as having 16 output devices per channel and a 700 Watt transformer, while the PA-7 II is listed as having 18 output devices per channel and a 700VA transformer. They're probably actually the same transformer, just using different terms (even though Watts and VA are not exactly interchangeable). We'll see what the parts lists shows. For the PA-7 II there is a reference to a 'refined voltage amplifier stage'. So the differences are beginning to add up.
  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
NAKAMICHI cd700 or mb-75/100 service manual required anton-sa Car Audio 46 13th August 2012 10:36 AM
Nakamichi CD Player 4 service manual hiwiho Digital Source 2 12th November 2009 12:34 AM
Nakamichi CA-5 hum/buzz and does anyone have the schematics/service manual? IG81 Solid State 1 3rd June 2009 01:58 AM
Nakamichi service manual/schematic gain wire Analogue Source 0 23rd March 2009 01:53 AM
Service manual Nakamichi pa302 ocaukrell Parts 4 28th October 2005 03:21 AM


New To Site? Need Help?

All times are GMT. The time now is 12:04 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