Umax PowerLook III

I

inez

Do repair manuals/schematics exist anywhere? My PowerLook may be old but it
hasn't been used much, in fact, lack of use may be the cause of my problem.
I can't afford another professional model right now since business is slow.
I'm calling a repair service, but don't know if we can afford that either.

When I power on my scanner I get the interior light, flashing ready/option
lights and a single buzz, but it doesn't continue it's power cycle.
Sometimes the indicator light will stop flashing and my software will
recognize the scanner as ready, but if I try to scan the calibration
progress window comes, the scanner makes a continuous clicking sound, but
nothing and the software times out. The scanner worked 1-2 months ago. It
gets infrequent use. It was cold in the house the day this problem came up,
but since then it still won't work in the warm. We tried the power cycling,
removing it form scsi and taking it to a separate outlet to try to power
cycle it. No go. We opened it to see if we could see something making it
stick/lock or any visible burnt/discolored electronics. Nothing immediately
apparent. We didn't disassemble though. I downloaded a driver update and
installed it, but as expected, this accomplished nothing. My husband thinks
it may be a relay but we have no schematic or repair manual. He's worked in
copier repair/electronics, but wouldn't want to go in blind.

Thanks for any enlightenment that isn't about
buying a new, cheap consumer model;)

inez
 
S

sinip

inez said:
Do repair manuals/schematics exist anywhere? My PowerLook may be old but it
hasn't been used much, in fact, lack of use may be the cause of my problem.
I can't afford another professional model right now since business is slow.
I'm calling a repair service, but don't know if we can afford that either.
Thanks for any enlightenment that isn't about
buying a new, cheap consumer model;)

Check power supply unit first. Check for bad solders, electrolytic
capacitors with high ESR, check if all voltages are present (usually
+5V, +12V and probably -5V and -12V). That's exactly the same I'm
planning to do with my HP 4C. :)
 

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments. After that, you can post your question and our members will help you out.

Ask a Question

Top