Diagnostic aids 3-1
5056-XXX
3. Diagnostic aids
Note: When troubleshooting, or prior to making any adjustment to print quality, always be sure:
• The printer is installed on a level, rigid surface.
• The photodevelopers are never exchanged. Do not exchange a black photodeveloper for a color
photodeveloper, as they have different surface phase counts.
• Radar Page is always used when adjusting print registration.
Power-On Self Test sequence
1. Power on.
2. Printer and RIP controller check:
• ROM and RAM
• Fuser thermistor
3. Printer hardware check:
• Paper jam
• Printer cartridge unit
• Toner supply
• Paper cassette present
4. Fuser temperature check. Temperature regulated.
5. Ready:
• Printer controller
• RIP controller
• Printer condition
• Motor/Fan
• Heater
6. DC motor drive 1
7. Feeding paper
8. Print
9. Stepper motor drive 2
10. Paper exit
11. Stop
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