Advantest R6581 Schematic Diagrams

[z01z]

Attached is the draft of the digital circuitry schematic from the analog out board. Seems like the same circuit is also used for the analog, printer and bcd boards, only the ID resistor is moved to a different position. Power-on test is successful and the different accessories are recognized when the resistor is moved around.

Moving the resistor to the scanner position gives 201 interface error though. After seeing the code this is not surprising, there are extra checks for the scanner, which checks some extra hardware.

The connector is Hirose FX2-52S-1.27DSL(71).