samsung multixpress 8123 dark copy from mirror

[ttean]

Samsung multixpress 8123 when copy from mirror very dark copies comes out. However from adf auto feeder the copy is normal like original not dark. I have already clean the mirrors in the scanning unit and it is still the same. Any setting or calibration that I can do for this model.

Thx,
Alvin.

[Matoku]

Re: samsung multixpress 8123 dark copy from mirror

I hv similar problem like this, the culprit is the CIS unit (scanner unit)
Mine is black strick if using on platen glass but it ok if from dadf.
Changed the CIS (scanner assy) and it settled. but the CIS is not cheap. it about 320USD.

[arnh79]

Re: samsung multixpress 8123 dark copy from mirror

I've seen this issue before on this series and it was a cracked ribbon cable on the scanner lamp assembly. Everything is fine when it's in home position for RADF use, but when it moves the crack causes an open circuit.

[Arcadian]

Re: samsung multixpress 8123 dark copy from mirror

I've seen this issue before on this series and it was a cracked ribbon cable on the scanner lamp assembly. Everything is fine when it's in home position for RADF use, but when it moves the crack causes an open circuit.

Yes it the thin ribbon cable that run with the lamp. Need to replace that, happens alot on the samsung 8040, 8240 machines. careful not to blow out the joint board