HP 97 card reader - tantalum capacitors

[AndiGer]

After analyzing a different (guess newer) layout of the main board than shown in the service manual I draw the schematics of that layout to show which part is where. I attach to my answer here.

During the weekend I now changed C4 and C6 as the card reader didn't read. What should I say: success!
I measured the old tantalum caps after unsoldering. They still seem to have good values. 22µF nearly accurate, 47µF gives 52.5µF. Nevertheless there obviously was a problem with them.

I also added some comments to the schematics as IMHO there are some errors in the service manual. Table 4-6: see agenda in PDF file. Figure 4-10: Q2 should be named Q3 and Q3 as Q2.

Andi