Hello guys, I am looking for the service manual of a Sansui AU-D907 (Japanese version). I've got a copy of the service manual for the AU 919 which I've read is a similar version outside of Japan, but unfortunately my technician says they are different and he is unable to perform a repair in the amp. Do you know where can I get the AU-D907 manual from? That would be greatly appreciated!
Sansui AU-D907 Service manual required
- Thread starter Davitoman
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Hi.
I will preface this by saying that I have no electronics background but have been interested in Sansuis for years. It is extremely difficult if not impossible for those of us living outside of Japan to get service manuals for models that were meant only for the Japanese domestic market. I don’t think that you will have any luck finding this service manual.
On the other hand, the D907 has long been listed as equivalent to the 919 and I have seen other postings on it. The D907F corresponds to the international D11 which is not what you show in your picture but was the next in chronologic order. I would be very much surprised if the 919 differed significantly from the D907 except for starting out with a line voltage other than 100V as to make the 919 manual unusable. You do not state your location but if your line voltage is other than 100V the D907 should be used with a voltage transformer.
By searching AK on Sansui D907 I came up with the name of one member who has posted recently and was ordering a D907. If no one here answers you, you can do a similar search and PM such members, as to whether the 919 manual is adequate.
I am an AK subscriber and don’t know whether you have to be a subscriber to do this but, if you are not, it might be a good investment.
Good luck.
Marc
I will preface this by saying that I have no electronics background but have been interested in Sansuis for years. It is extremely difficult if not impossible for those of us living outside of Japan to get service manuals for models that were meant only for the Japanese domestic market. I don’t think that you will have any luck finding this service manual.
On the other hand, the D907 has long been listed as equivalent to the 919 and I have seen other postings on it. The D907F corresponds to the international D11 which is not what you show in your picture but was the next in chronologic order. I would be very much surprised if the 919 differed significantly from the D907 except for starting out with a line voltage other than 100V as to make the 919 manual unusable. You do not state your location but if your line voltage is other than 100V the D907 should be used with a voltage transformer.
By searching AK on Sansui D907 I came up with the name of one member who has posted recently and was ordering a D907. If no one here answers you, you can do a similar search and PM such members, as to whether the 919 manual is adequate.
I am an AK subscriber and don’t know whether you have to be a subscriber to do this but, if you are not, it might be a good investment.
Good luck.
Marc
JoseHH
Super Member
That is not true. I have an AU-D907 and the AU-919 service manual cover all the details. So no need for a different manual, but you may need a different tech, as his response suggests that he is not well informed about these amplifiers. The only difference is the AC voltage on the primary which in the Japanese unit is 100V. The AU-919 manual cover all the other cases, but the rest of the schematics are the same. You should note that Sansui often made modifications to the design and the units may have these changes installed from factory but they are not documented in the service manual. There are also misprints in the polarity of a few capacitors in the AU-D907/AU-919. If you search un this forum you will find multiple threads where repairs or restorations have been made. One of the most popular is this one.
see also EchoWars post here. There are threads by member Hyperion (please search for these because they are numerous relevant posts by him) and MIJ_Pioneer has restored one also. I have a small thread for an AU-D907 as well. But you have a lot of reading you could find in this forum that will clarify everything you need.
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GrisPato
Super Member
This worries me a little. Don't know how well you know him.
I didn't have problems with the little differences between schematic and what you find on the PCB and I am a novice.
Make sure he is up to the job.
I don't say transistors can not go leaky but I have read a few times technicians looking in the wrong places because they don't understand what they have in front of them.
Thanks for the advice mate. I am thinking about getting the amp back. I am struggling to find someone in the UK that can take care of it properly though
Many thanks Jose. I have been digging in some of the forums you referenced and I reckon there is definitely sufficient information. I'll take the amp back and will try to find another technician in the UK that is able to repair it properly.
