Справочник Пользователя для HP color laserjet 4500
64
Chapter 2 Service tools
EN
Developer test
The developer test rotates the carousel stopping at each toner cartridge
and rotating the developer sleeve. For the best view of the carousel and
the toner cartridge sleeves, remove the drum cartridge. The drum
drawer must be closed before the test can run.
and rotating the developer sleeve. For the best view of the carousel and
the toner cartridge sleeves, remove the drum cartridge. The drum
drawer must be closed before the test can run.
1
Press the
I
TEM
key until
ENGINE DIAGS DEVELOPER TEST
is
displayed.
2
Press the
S
ELECT
key to run the test. The front panel displays
ENGINE DIAGS E2:DEVELOPER
while the test is running. Watch the
carousel and make sure that the toner cartridge developer sleeve
rotates. The sequence is black followed by a pause, then magenta,
cyan, and finally yellow.
rotates. The sequence is black followed by a pause, then magenta,
cyan, and finally yellow.
The test takes approximately 35 seconds. While the developer test is
running you will see the drum turn if it is installed, as well as the drive
gear for the ITB.
running you will see the drum turn if it is installed, as well as the drive
gear for the ITB.
Drum test
The drum test exercises the drum drive mechanism. In addition, the
fuser motor is turned on to allow the lift cams for the ITB to be rotated
into the ITB up position.
fuser motor is turned on to allow the lift cams for the ITB to be rotated
into the ITB up position.
1
Press the
I
TEM
key until
ENGINE DIAGS DRUM TEST
displays.
2
Press the
S
ELECT
key to run the test. The front panel displays
ENGINE DIAGS E3:DRUM
while the test is running.
Watch to see if the ITB lift cams turn and if both the drum drive gear and
the ITB drive gear is rotating.
the ITB drive gear is rotating.