6-18
Phaser 440 Color Printer
6
Troubleshooting
Print engine self-diagnostics
Starting service mode (self-diagnostics)
1.
Turn off the printer if it is not already turned off. Ensure that the
printer has paper and a transfer roll installed.
2.
Press and hold the TEST button (at the rear of the printer) and turn on
the printer. Wait 1 or 2 seconds and then release the TEST button.
The printer will power-up into service mode.
Displaying error codes on the front panel
In service mode, the front panel lights constantly displays error codes reflecting
the print engine's current status. The highest priority error code is displayed at a
blinking rate of 4 Hz. If more than one error condition exists, you can view each
error code by momentarily pressing the TEST button. The subsequent error
codes are displayed on the front panel at a blinking rate of 2 Hz. The blinking
rate of 4 Hz indicates when you have cycled back to the highest priority error
code.
The following chart shows how to read and convert the front panel display into
a hex-encoded code.
✺
means light is on in normal operation, or blinking in service mode.
Table 6-2 Decoding the front panel display
ERROR
JAM
PAPER
TRANSFER
ROLL
COVER
READY
POWER
2
1
8
4
2
1
Always on
Example:
o
o
o
✺
o
✺
✺
equals
hex code
05:
0
0
0
4
0
1
0
5
ERROR
JAM
RIBBON
COVER
READY
POWER
MEDIA