6-24
Phaser 440 Color Printer
6
Troubleshooting
Power problems
Front panel indicators
Table 6-4 Power problems
All front panel
indicators remain off.
The printer does not
initialize upon
power-up.
Check to see if the printer is plugged in. Check the line power
fuses inside the power supply.
Check the power on/off switch.
Check the power supply for proper input and output voltages.
Is the power supply set to the correct 115/220 VAC setting?
Check the +24 VDC safety interlocks. Refer to the topic “+24
VDC safety interlocks” on page 6-6.
Table 6-5 Front panel indicators and their meanings
Media tray indicates
empty when it is not.
If there is media in the tray, then check the media tray
microswitches (on the right side of the tray slot).
Check to see if the paper-empty flag is broken. If it is, refer to
the Section 8 topic “Paper-pick roller, clutch, and paper-empty
flag” on page 8-10.
Check the media selection switches on the right side of the
paper tray.
Transfer roll out
indicated when it
is not.
A transfer roll out condition occurs when all three transfer roll
mark sensors no longer detect the black marks running along
the edge of the transfer roll. If the transfer roll has not run out,
check to see that the transfer roll is properly passing the
transfer roll sensors. Ensure that the transfer roll is not slack
or skewed and aligns properly with the sensors.
Cover the transfer roll mark sensors with a piece of opaque
tape and see if the error indication clears. Run a sensor test.
Refer to the Chapter 9 topic “Calibrating the reflective
sensors” on page 9-15. If they continue to fail, the sensors or
the sensor wiring are probably defective.