Print Engine Self-Diagnostics; Starting Service Mode (Self-Diagnostics); Displaying Error Codes On The Front Panel; Table 6-2 Decoding The Front Panel Display - Tektronix Phaser 440 Service Manual

6
Troubleshooting

Print engine self-diagnostics

Starting service mode (self-diagnostics)

Displaying error codes on the front panel

6-18 Phaser 440 Color Printer
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.
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.

Table 6-2 Decoding the front panel display

ERROR JAM
2 1
Example:
o o
equals
hex code
05:
0 0
0
means light is on in normal operation, or blinking in service mode.
ERROR
PAPER TRANSFER
ROLL
8 4
o
0 4
JAM MEDIA RIBBON COVER
COVER READY POWER
2 1 Always on
o
0 1
5
READY POWER