Advice Needed: Workcentre 7120 / System Error 092-315 on main display

[rockdude]

I am getting a system error 092-315 on the main display on startup. Which indicates a ATC Fail (K) Black.

The error codes list states the following 092-315, 092-660, 092-668.

Upon inspection of the drum unit I found the (K) Black toner exit hole packed to the brim with toner
and piling up on top of the back of the drum. I looked at the other drum units (M,C,Y) and found no excess toner.

After vacuuming and cleaning the (K) Black drum unit area as bets as possible, and resetting NVRAM
752-368 (was at 1 reset to zero) 752-372 (was at 3 reset to zero).
Turned machine off (Top Power Button first then inside cover button next) Machine upon starting up printed several blank pages, then there was a metal clink sound and the 092-315 system error redisplayed itself on main screen.

I have determined that one of the following is at fault:
Main Drive Assembly – 007K16710
Dispense Motor -127K61161
Developer Clutch – 121K46371
Drum Drive Motor – 127K61161

Since this a time and materials call, was just looking for opinions on which one of the above would
be most likely to try first?

All help is appreciated, and thanks in advance

[Mukasa]

Re: Advice Needed: Workcentre 7120 / System Error 092-315 on main display

Hello Can you check the following.
Check the following:

• The connection between the MCU PWB P/J411 and the CRUM Reader (K) P/J123 for open circuit, short circuit, and poor contact
  
• The connection terminals between the Drum Cartridge (K) CRUM PWB and the CRUM Reader (K) for damage and foreign substances
  
• The Toner Dispense Motor (C,K) for revolution failure: Component Control [093-004] ( PL 5.1)
  
• The Drum/IBT Drive Motor for revolution failure: Component Control [042-001] ( PL 3.2)
  
• The Main Drive Motor for revolution failure: Component Control [042-006] ( PL 3.3)
  
• The Dev K Clutch for failure: Component Control [042-010] ( PL 3.3)
  
• The path from Toner Cartridge (K) to Developer (K) for toner blockage
  
• The Developer (K) for internal toner blockage
  
• The Toner Cartridge (K) for internal toner blockage

If no problems are found, replace the following parts in sequence:

• Drum Cartridge (K) ( PL 8.1)
  
• MCU PWB ( PL 18.1)

[rockdude]

Re: Advice Needed: Workcentre 7120 / System Error 092-315 on main display

Hi

Thanks for the reply, but I already fixed it.

Turned out replacing the Main Drive assembly was the answer.
(and a through vacummingand cleaning)

Gears were caked with toner, and clutch was sticking due to toner contamination.
(Sorry I gave wrong part number for Main Drive. It was actually #007K16690)

Thanks again for your input.