Replaced toner PCB sensor

[Wbankard]

Checked connector CN559, no bent pins. HVPS was not removed to install the toner pcb . The other large components that were removed: the ARDF, fax pcb, BICU, network assembly and the BICU housing.

Open connectors on the BICU are : CN516, CN517, CN570 - UPPER LEFT CORNER; CN134, CN118, CN110- BOTTOM; CN527-LEFT; CN133-RIBBON CABLE CENTER; AND CN111 - UPPER RIGHT

[slimslob]

Checked connector CN559, no bent pins. HVPS was not removed to install the toner pcb . The other large components that were removed: the ARDF, fax pcb, BICU, network assembly and the BICU housing.

Open connectors on the BICU are : CN516, CN517, CN570 - UPPER LEFT CORNER; CN134, CN118, CN110- BOTTOM; CN527-LEFT; CN133-RIBBON CABLE CENTER; AND CN111 - UPPER RIGHT

Now go to the point to point and see what if anything should be connected to those connectors.

[Wbankard]

Found the problem --- I'm embarrassed --- put connectors in wrong socket. poor lighting.(excuse) lucky that it did not short out the board.

[Wbankard]

After 3 3rd party toners that failed we assume that it's the wrong chip in the cartrage