magicolor 330 - Base Engine Service Manual 6-3
Secondary Fault Isolation Procedures
6.1 - Electrical Noise
Step Actions and Questions Yes No
SUSPECT COMPONENTS
The following components are associated with this specific problem.
One or more of these components may have failed partially or com-
pletely. If you cannot isolate the problem using this FIP, replace each
component listed below, one at a time, until the problem disappears.
• Motors and Motor PWBs
• Solenoids
• ROS Assembly (RRP 9.47)
• 2ND BTR Assembly (RRP 9.75)
1EXTERNAL NOISE
1. Check if there is other electrical equipment, such as electrical
generators, radio transmitters, or devices using electrical motors,
within ten feet of the printer.
2. Shut off the other electrical equipment or relocate the printer to
at least twenty feet away from the other devices.
Is the Electrical Noise problem still present?
Go to step 2 Permanently
relocate either
the printer or
the problem
device.
2OPTION ISOLATION
If the printer has the optional Large Capacity Input Feeder installed,
remove the Feeder and see how the printer operations without it
installed.
Does the Electrical Noise problem go away when you remove a
specific option?
Go to step 3 Go the LCIF
Technical
Manual and
troubleshoot
for arcing
solenoids,
motor, faulty
PWBs or
faulty wiring.
3AC GROUND
Check the AC wall outlet.
Is the AC wall outlet correctly wired and grounded?
Go to step 4 Customer to
arrange for
repair of AC
wall outlet
Steps 4 through 9 attempt to find a faulty printer component that
may be generating electrical noise. If replacing a component does
not solve the problem, reinstall the old component before moving
on to the next step.
4Replace the OPC Drum (RRP 9.48)
Is the Electrical Noise problem still present?
Go to step 5 Problem
solved
5Replace the LVPS (RRP 9.119)
Is the Electrical Noise problem still present?
Go to step 6 Problem
solved
6Replace the HVPS Assembly (RRP 9.120)
Is the Electrical Noise problem still present?
Go to step 7 Problem
solved