Changeing gears of a developer housing on a 6500 konica

It is quite a lot to write down, recommended a service tech do it. try this site they mite have the service manual

Service manuals electronic components datasheets and equipment schematics...

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

When was the last time the developer was replaced in the developer unit? If has been replaced then you might have a bad ATDC (Automatic Toner Density Control) sensor Located right below the developer unit (Same unit houses the drum. If the developer was replaced when it was done was a vacuum cleaner used? IF so the static electricity from the vacuum clear could have destroyed the sensor, NEVER USE a VACUUM cleaner to remove the developer. Also when the developer was replaced, was the counter cleared to tell the copier developer was replaced, the copier uses certain counters to determine certain voltages for certain assemblies, if not image problems and codes can appear. Finally was the F8 run after the developer was installed before any prints or copies were made? If not buy new developer and start over, counter is to be cleared first, then developer replaced, then F8 (TCR ADJ) run.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Sir /Mam the Black developing unit has it had its developer replaced if not needs to be also it could be that the Developing unit need replacing or the ATDC sensor located inside the developing unit is bad did the person who replace the Black developer recently use a vacuum cleaner to remove the old developer if so he or she destroyed the sensor never ever use a vacuum clearer to remove old developer the static electricity form the vacuum cleaner destroys the sensor.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Check the yellow drum and also check the yellow developing unit.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

Check the yellow drum and or the yellow developing unit

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

check the magenta developer unit and drum

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Check yellow developer unit and might need to replace it or replace the developer

developer Y

Developing motor for the Black, working in conjunction with Toner Control Sensor.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

You have a bad developer unit for magenta. Mite need to have the developer replaced, sensor at bottom of that unit, worse case image control board.

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f