Minolta magicolor 330 Service Manual page 137

6.1 - Electrical Noise
Step
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)
1
EXTERNAL 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?
2
OPTION 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?
3
AC GROUND
Check the AC wall outlet.
Is the AC wall outlet correctly wired and grounded?
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.
4
Replace the OPC Drum (RRP 9.48)
Is the Electrical Noise problem still present?
5
Replace the LVPS (RRP 9.119)
Is the Electrical Noise problem still present?
6
Replace the HVPS Assembly (RRP 9.120)
Is the Electrical Noise problem still present?
magicolor 330 - Base Engine Service Manual
Actions and Questions
Secondary Fault Isolation Procedures
Yes
Go to step 2 Permanently
relocate either
the printer or
the problem
device.
Go to step 3 Go the LCIF
Technical
Manual and
troubleshoot
for arcing
solenoids,
motor, faulty
PWBs or
faulty wiring.
Go to step 4 Customer to
arrange for
repair of AC
wall outlet
Go to step 5 Problem
solved
Go to step 6 Problem
solved
Go to step 7 Problem
solved
No
6-3