Service Manual
ix
Media jams and the paper path 6-8
Media-based problems 6-8
Paper-pick errors 6-9
Paper-clamping errors 6-10
Print-eject jams 6-10
Checking the paper-feed motor and drive train 6-11
Media skews passing through the paper path 6-12
Transfer roll jam 6-12
Printing and print quality problems 6-13
Streaks or lines in the print parallel to the long axis of printing 6-13
Streaks or lines in the print parallel to the short axis of printing 6-13
White portion of print is colored 6-14
Color is uneven 6-14
Not printing 6-15
Printing too light or too dark 6-16
Image is offset or cut off 6-16
Wrinkling 6-17
Print engine self-diagnostics 6-18
Starting service mode (self-diagnostics) 6-18
Displaying error codes on the front panel 6-18
Problems and solutions 6-19
Print engine error codes and their causes 6-19
Power problems 6-24
Front panel indicators 6-24
Macintosh printing problems 6-25
PC DOS printing problems 6-26
Windows printing problems 6-28
Workstation printing problems 6-29
Phaser 440 image processor 6-30
Image processor normal operation indicators 6-30
Image processor hard and soft error indicators 6-30
Verifying the image processor's operation 6-30
Image processor self-diagnostics 6-31
Image processor rear panel switches for self-testing 6-31
Printing the configuration page 6-32
Resetting NVRAM 6-32
