Service manual

6-18 DECcolorwriter 1000

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 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 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.

Z 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

2184 21Always on

Example:

oooZ oZZ

equals

hex code

05:

0004 01

ERROR JAM RIBBON COVER

READY

POWERMEDIA