9-4
Phaser 440 Color Printer
9
Checks and Adjustments
Printer self-checks
Table 9-2 summarizes using DIP Switches 1-4 through 1-7 to select self-check
modes to adjust and calibrate the print engine's sensors and mechanisms. The
topics following Table 9-2 explain when and how to use each check mode. The
printer must be in service mode to execute self-checks.
Note
Turn off the printer and reenter service mode between each test.
Turning Switch 1-3
on
starts the selected test. Turning it
off
stops the test.
↑
indicates switch is
on
.
Table 9-2 Self-check mode summary
Dip Switch
1-4
1-5
1-6
1-7
Check or adjustment mode
Place thermal head in print/standby position.
↑
Power supply VH (head voltage) check mode.
↑
Second feeder connection test.
↑
↑
Paper path check (pick, feed, clamp, and eject).
↑
↑
Paper tray select.
↑
Print start leading edge margin tolerance adjust (generally a
manufacturing adjustment).
↑
↑
↑
Paper clamp top loss tolerance adjust (generally a
manufacturing adjustment).
↑
↑
Aging test (manufacturing test).
↑
Mechanical switch check 1: cover open switches, reset switch,
second feeder.
↑
↑
Mechanical switch check 2: head lift sensors and transfer roll
core sensors.
↑
↑
Mechanical switch check 3: standard paper tray switches and
tray-empty switch.
↑
↑
↑
Mechanical switch check 4: optional paper tray switches and
tray-empty switch.
↑
↑
Mechanical switch check 5: paper-pass sensors, paper exit
sensor, drum home sensor.
↑
↑
↑
Transfer roll mark sensor adjust.
↑
↑
↑
↑
Pick roller cleaning mode.