4-66 Phaser 6180 Color Laser Printer Service Manual
General Troubleshooting
Inoperable Printer Troubleshooting
Engine Power-Up Sequence
1. Machine Control Unit (MCU) Board logic check
2. Print Cartridge (Missing, NVRAM (CRUM) Error, CRUM ID, Life Over)
3. Fuser (Missing, NVRAM (CRUM) Error, Life Over)
4. Transfer Unit (Missing, Life Over)
5. ADC Sensor (Error)
6. All paper Sensor (Jam)
7. Door (Open)
8. Environmental (Humidity/Temperature) Sensor (Error)
9. NVRAM (NVRAM Error)
10. Image Processor Board POST Diagnostic check
Printer Continually Displays Warming Up
1. Verify the correct Fuser (110 V vs. 220 V) is installed in the printer.
2. Refer to the Engine Power-Up Sequence (page 4-66).
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