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4-8 Phaser 8400/8500/8550/8560 Color Printer Service Manual
General Troubleshooting
Drum Maintenance
Cam Shaft
Cycles the motor/shaft repeatedly.
Deskew Shaft
Wiper Shaft
Tray 1 Pick Shaft
Tray 2 Pick Shaft
Tray 2 Lift Motor
Tray 3 Pick Shaft
Cycles the motor/shaft repeatedly. If
not installed generates an “Option
not detected” message.
Tray 4 Pick Shaft
Tray 3 Lift Motor
Tray 3 Motor &
Shafts
Tray 4 Pick Shaft
Tray 4 Lift Motor
Tray 4 Motor &
Shafts
Exercise Heaters Menu
Allows the heaters to forced to an ON or OFF condition or to
be toggled from one condition to the other. Also, provide
monitoring to observe the resulting heater power or
temperature.
Monitor heaters Monitors heater power.
Monitor
Temperatures
Monitors heater temperature.
All Heaters On Turns all heaters On.
All Heaters Off Turns all heaters Off
Toggle Printhead
Heaters
Toggles Printhead heaters to
opposite state.
Toggle Preheat
Heater
Toggles Preheater heater to
opposite state.
Toggle Drum Heater Toggles drum heater.
Toggle Ink Melt
Heaters
Toggles ink melt heaters to opposite
state. There is a melt heater for each
of the four colors.
Control Panel Display Exercises the Control Panel LCD/LED outputs.
Cycle LED Cycles the LED through a red/
Yellow/Green sequence.
Set display dark Sets the LCD display dark.
Test backlight Changes the display backlight from
off to max.
Set display light Sets the LCD display light.
Service Diagnostics Menu Map (Continued)
Menu Description