HP 9872T Trouble Shooting

[husmann]

Thanks for your reply.

(06-09-2018 11:48 PM)cruff Wrote:  … verify lack of cable damage, that there are no obviously bad capacitors. If you have the service manual, verify all supply voltages are correct.

I looked for cable damage, looked for leaking or swelling capacitors, checked every fuse and verified every supply voltage. Everything seems to be ok, no mice ;-)

BTW: The noise comes from the y-axis motor: if I turn off the y-axis motor (switch “S2 Y MUTE”) the noise vanishes. Unfortunately the plotter shows the same behaviour as before: front panel LEDs “ENTER”, “OUT OF LIMIT”, “ERROR”, and “CHART LOAD” are on and no self test can be started.

Wolfgang