Service manual

Image Defect Troubleshooting (Defect of the Print)
M085/M086 6-52 SM
4. Scanner harness of the laser unit connection failure
 Is the scanner harness of the laser unit connected securely?
No: Reconnect the scanner harness of the laser unit.
5. FG harness ASSY connection failure
 Is the FG harness ASSY between the laser unit and main PCB ASSY connected
securely?
No: Reconnect the FG harness ASSY between the laser unit and main PCB ASSY
securely.
6. HVPS PCB failure
 Is the problem solved after replacing the HVPS PCB ASSY?
Yes: Replace the HVPS PCB ASSY.
7. Main PCB failure
 Is the problem solved after replacing the main PCB ASSY?
Yes: Replace the main PCB ASSY.
8. Laser unit failure
 Is the problem solved after replacing the laser unit?
Yes: Replace the laser unit.