Repair Analysis Procedures
Phaser® 3500 Laser Printer Service Manual
2-4
Service Diagnostics
The printer has built-in diagnostics to aid in troubleshooting problems. The Service
Diagnostics Menu provides a means to test sensors, motors, switches, clutches, fans and
solenoids. Diagnostics also contain built-in test prints, cleaning procedures, printer status and
some NVRAM access.
Service diagnostics are to be executed through the control panel by a certified service
technician only. The printer must be rebooted to enter Service Diagnostics.
Entering Service Diagnostics
1. Turn the printer power OFF.
2. Hold down the OK button and turn the printer back ON.
3. Continue to hold the button until the following mesage is displayed on the Control Panel:
“Diagnostic Mode” / “Press Menu Key”, and then release the OK button.
4. Press the Menu button and use the Arrow buttons to scroll through the available functions
(see the following Service Diagnostic Menu Map Table).