Service required for HP 9160A Optical Card Reader

[Jurgen Keller]

No, I haven't found yet a circuit diagram for the OCR.

I have inspected the connector and the device. The connector is clean, no crud. No lose or frayed wires as far as I can see. However, I found a resistor that looks damaged, see this picture (it's the small one in the middle with a crack). Probably that's not the root cause, just the consequence of another defect. Anyway, it's a starting point.