Mechanical Noise - Xerox 3001 Service Manual

OF1 Isolation Procedure for
Mechanical Noise
This procedure is used t o isolate mechanical
noises to a specific subsystem. There probably
will not be a dropout to a specific component.
The procedure will be eliminating one
subsystem at a time in order t o isolate to the
most probable cause for the mechanical noise.
In the Power Saver or Rest mode, there is an
electrical noise at the rear of the copier.
The noise is heard when the main drive
motor is turning after the control panel
indicates L3.
After the copier is ready, enter the
code [lo] to switch on the main drive
motor and enter the code [ I l l to
energize the media feed clutch.
The noise is heard when the feed
clutch is energized.
Y N
Enter the code [30] and insert a
document into the document
handler. Check the following :
the lower document feed rolls
A B C
the bearings for binding (PL
A
5.1)
document handler idler rolls
the tension of the drive belt
Switch off and unplug the copier.
Remove the media transport module
(REP 8.1).
Check the following for damage:
the upper media feed rolls
the bearings
media idler rolls
idler roll shaft
Lubricate the Media Transport Main
Drive Gear and Pivot Shaft with
Molykote 557 (70H37) or 70P95.
Switch off and unplug the copier. Remove
the developer module (REP 9.5). Cheat the
upper rear cover interlock switch.
Connect the copier and switch on the
pow.er.
The noise is heard when the main drive
motor is turning after the control panel
indicates 13.
Y N
I
Check the developer module and gears
for binding.
If noise i s in the Magnetic Roll, replace
the Developer Module (PL 9.4).
Remove the xerographic module (REP
9.1).
Move the idler gear (PL
1.1)
to
the left on the shaft. Clean the shaft
and then lubricate the idler gear and
shaft with Molykote 557 (70H37) or
70P95. Check that the Contamination
Seal is installed correctly. If not reseat
or replace. Cleaning Blade Assembly
can make contact with it and cause a
popping noise. Reinstall the
xerographic module and developer
module.
Ensure that the Photoreceptor Ground
Clip is install flat against the shaft. If
necessary, use a conductive grease t o
lubricate.
Switch off and unplug the copier. Remove
the xerographic module (REP 9.1).
Remove the drum drive belt. Install the
xerographic module.
Connect the power cord and switch on the
copier.
When the fuser reaches the correct
temperature, enter the code [lo] to switch
on the main drive motor.
The noise is heard when the main drive
motor is turning.
Switch off and unplug the copier.
Check the photoreceptor drum, auger
and gears for damage. Clean the
auger pullylgear shaft, remove any
scoring with emery paper, then
lubricate the pulleylgear with
Molykote 557 (70H37) or 70P95.
Replace the auger pully and bearing,
do not lubricate.
12/98
OF1 Isolation Procedure for Mechanical Noise
2-70