Nakamichi PA-7A II Service Manual

ZigmundRat · 2nd June 2008, 09:40 PM

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

thejohn · 3rd June 2008, 05:55 AM

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.

sakis · 3rd June 2008, 05:47 PM

I DLIKE TO HAVE IT IF YOU FEEL LIKE ...............

i am in love with all these projects ..................thanks

zeonrider · 3rd June 2008, 07:08 PM

Who want ,I'll send!

Leave Email A.

Regards zeoN_Rider

zeonrider · 3rd June 2008, 07:57 PM

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

Regards zeoN_Rider

ZigmundRat · 3rd June 2008, 08:01 PM

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.

zeonrider · 3rd June 2008, 08:18 PM

linkxp@sezampro.yu

Regards zeoN_Rider

ZigmundRat · 3rd June 2008, 09:18 PM

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.

zeonrider · 3rd June 2008, 09:44 PM

Sorry I, have PA-7 SM.

I, found differences, lok on the pisture!

Regards zeoN_Rider

ZigmundRat · 3rd June 2008, 10:42 PM

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.

2nd June 2008, 09:40 PM	#1
ZigmundRat diyAudio Member Join Date: May 2008	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

3rd June 2008, 05:47 PM	#3
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	I DLIKE TO HAVE IT IF YOU FEEL LIKE ............... i am in love with all these projects ..................thanks __________________ SERVICE ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

3rd June 2008, 07:08 PM	#4
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	Hi! Who want ,I'll send! Leave Email A. Regards zeoN_Rider

3rd June 2008, 07:57 PM	#5
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	Hi! What is the diff. PA-7 & PA-7A,PA-7E? Regards zeoN_Rider

3rd June 2008, 08:18 PM	#7
zeonrider diyAudio Member Join Date: Mar 2004 Location: Belgrade RS	Hi! linkxp@sezampro.yu Regards zeoN_Rider


	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

3rd June 2008, 05:55 AM	#2
thejohn 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.

3rd June 2008, 08:01 PM	#6
ZigmundRat 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.

3rd June 2008, 09:18 PM	#8
ZigmundRat 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.

3rd June 2008, 10:42 PM	#10
ZigmundRat 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.

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