Need a sony vintage cd player D9/90 service manual

[huhalahu]

My sony D9/90 was broken! I found that there is no sound about one side of the headphone!
I try to fix it by myself,But I don't konw which is DSP and headphone AMP,I need a service manual to check out the broken point.If you have one,Please help me!!

 

[east electronics]

is that the correct and complete model number ?

 

[huhalahu]

Yes, I am very sure it is the correct model .Sony D9(Maybe it is the us model) or D90 portable vintage CD Player!
if you have any PDF service manual of D9/90. Please help me.
Thanks very much
Merry Christmas!!