The purpose of this test is to identify whether there is too much
friction in the paper-axis drive system which is caused by defects
with the Transmission Gears, Drive Roller or the Paper-Axis Motor.
This test should be performed when a Paper-Axis shutdown occurs
which is not caused by a paper jam.
The Paper Advance test will perform the following tests:
Paper-Axis Motor test.
Drive Roller Encoder-Sensor test.
Drive Roller test.
NOTE: This Service Test can be performed by the End User
with the guidance of a HP Support person via the phone.
WARNING: IF POSSIBLE ALWAYS
PERFORM THIS TEST BEFORE REPLACING PAPER-AXIS COMPONENTS. IF THIS
TEST PASSES, DO NOT REPLACE ANY PAPER-AXIS COMPONENTS.
Perform the Paper Advance test as follows:
NOTE: Remove any media loaded and make sure that Pinch-Arms
are lowered before performing this test.
1. In the Service Tests submenu, scroll to "Paper Advance
test" and press Enter.
2. The test will first check if the Paper-Axis Motor is working
by moving it slightly backwards and forwards. If this test passes,
the following message will be displayed (press Enter
to continue to the next stage of the test):
WARNING: IF THIS TEST PASSES,
DO NOT REPLACE THE PAPER-AXIS MOTOR.
3. If the test fails while checking the Paper-Axis Motor, then
the following message will be displayed:
In this case, to resolve the problem, replace the Paper-Axis Motor
» Paper-Axis
Motor.
4. If the Paper-Axis Motor test passes, the Printer will try to
read the Drive Roller Encoder-Sensor while moving the Paper-Axis
Motor. If the Printer can read the signals from the Encoder-Sensor,
then the test has passed and the following message will be displayed
(press Enter to continue to the next stage of the
test):
WARNING: IF
THIS TEST PASSES, DO NOT REPLACE THE DRIVE ROLLER ENCODER-SENSOR.
5. If the Printer has problems reading the signal
from the Drive Roller Encoder-Sensor, then the test has failed and
the following message will be displayed:
In this case, to resolve the problem, replace the Drive Roller
Encoder Sensor » Drive
Roller Encoder Sensor.
6. It is possible that while performing this test, a Paper-Axis
shutdown occurs, in which case the following message will be displayed:
In this case, to resolve the problem, try the following:
1. Open the Window and check for any visible obstacles that could
be restricting the movement of the Drive Roller.
2. Try cleaning the Drive Roller using the Turn Drive Roller service
utility » Turn
Drive Roller. Also try cleaning the Drive Roller
Gears.
3. Replace the Drive Roller » Drive Roller.
4. Replace the Gear Assemblies »
Gear Assemblies.
WARNING: Only replace one component
at a time and try the Service Test again before replacing another
component. Using this procedure you will be able to determine exactly
which component failed.
5. If the Drive Roller Encoder-Sensor test passes, the Printer will
try turning the Drive Roller and the following message will appear
on the Front Panel:
6. Once the test is completed, the results will be displayed on
the front panel:
