Pioneer PD-D9-J Service Manual

[billbillw]

Hannes came through. Thanks a bunch!. He actually had the Mk2 version also. I haven't had a chance to compare them, but Hannes told me he couldn't find any differences in the schematics which is crazy.

In the US, Pioneer raised the MSRP by $500 for the Mk2 version. An extra $500 for cosmetic changes and a different remote? I don't think so. I picked up my D9-J for less than half the original list price and it really is a steal. I think it will be a real performer with a few upgrades.

[billbillw]

After spending an hour comparing the Mk2 schematics to the original D9, I can verify that there is little, if no significant changes at all. Possibly some altered part choices (mainly caps) and possibly a different crystal for the 22.5792Mhz clock signal. Absolutely no topology change anywhere.

So, I have an old unused pair of Blackgate NX-HQ 47uF/6.3V in my parts bin that are just begging to replace the output coupling caps (C1109/C1209).

Although Pioneer originally used 50V caps, does anyone see a reason why those 6.3V caps wouldn't be sufficient? I wouldn't expect much DC voltage coming off those OPA2134.

[Baka]

Originally Posted by billbillw

So, I have an old unused pair of Blackgate NX-HQ 47uF/6.3V in my parts bin that are just begging to replace the output coupling caps (C1109/C1209).

Although Pioneer originally used 50V caps, does anyone see a reason why those 6.3V caps wouldn't be sufficient? I wouldn't expect much DC voltage coming off those OPA2134.

Do you have an input coupling cap already installed at the next stage (dac, preamp etc)?

If you have, you can replace that cap with the wire link.

That cap is also bypassed with a smaller (0.1uF) polypropylene film cap which should then be also removed.

Good quality film cap at the input of the next stage is probably a better solution.