4.2 Noises
d.
If the noise occurs when the top cover is opened, inspect or swap the
following:
•
Make sure the transfer/separation charger is mounted correctly and
not jamming the prefuser transport roller.
•
Prefuser transport and roller
•
Registration assembly
•
Main motor assembly
e.
If the noise occurs only when the top cover is closed, inspect or swap
the following gears:
•
Fuser unit drive and idler gears
•
Postfuser transport drive gears
•
Transfer/separation roller
•
Print drum cartridge
•
Developer cartridge
•
Toner Cartridge
3.
Inspect the copper colored brushes that ground the shafts of the upper and
lower registration and upper and lower feed rollers.
4.
Noises during printing: Print a test sheet, as shown in Chapter 3.
Do the following to find the source of noise heard while the printer is
printing:
a.
Try to isolate the noise to one or the other input cassette. If the noise is
associated with one cassette, inspect its feed roller, gears, and clutches.
b.
If the noise happens when feeding from both cassettes, inspect the
following:
•
Upper and lower turn rollers, clutch, and gears. The upper turn
rollers are part of the registration transport assembly.
•
Registration rollers, clutch, and gears.
c.
If the noise only happens when duplex feeding or output stacking:
•
Inspect the refeed rollers, gears, and clutch.
•
Inspect the exit motor, gears, and rollers.
4–4 Start FIP and Nonerror Code FIPs
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