Electrical Noise - Xerox Phaser 6125 Service Manual

Electrical Noise

Phaser 6125/6130 Color Laser Printer Service Manual
There is a variable pitch sound coming from the printer. Electrical noise can
be either noise in the electrical lines or static in electromagnetic
communications.
Initial Actions
Cycle printer power.
If the problem persists, follow the procedure below.
Troubleshooting Reference Table
Applicable Parts
HVPS, PL4.1.19
Transfer Unit, PL6.1.7
Imaging Unit, PL4.1.21
Troubleshooting Procedure Table
Step Actions and Questions
1 Check external noise.
1. Are there other electrical appliances
within 3 meters of the printer?
2. Turn the electrical appliances Off or
relocate the printer at least 6 meters away
from other electrical appliances.
Does the error still occur?
2 Check the AC ground
Is AC power supply outlet wired and
grounded appropriately?
3 1. Open the Front Cover.
2. Inspect the four Transfer Unit HV
connections.
Are the four terminals on the Transfer Unit,
and the four springs on the frame
(PL4.1.11, 12, 13 and 14) dirty and/or
deformed?
4 Check the Imaging Unit connection
1. Remove the Imaging Unit.
2. Inspect the five Imaging Unit HV
connections.
Are the five HV terminals on the Imaging
Unit, and five springs on the frame
(PL4.1.10 and PL4.1.15 to 18) dirty and/or
deformed?
General Troubleshooting
Wiring and Plug/Jack Map References
Yes
Go to step 2.
Go to step 3.
Clean or
replace the
Transfer Unit
(page 8-41)
or clean the
spring(s).
Clean and/or
replace the
Imaging Unit
(page 8-8) or
clean the
spring(s).
No
Complete
Request the
client to fix
AC power
supply outlet.
Go to step 4.
Go to step 5.
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