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6-4 magicolor 330 - Base Engine Service Manual
Secondary Fault Isolation Procedures
6.1 - Electrical Noise, continued
Step Actions and Questions Yes No
7
Replace the MCU PWB (RRP 9.123)
Is the Electrical Noise problem still present?
Go to step 8 Problem
solved.
8
Replace the Controller PWB (RRP 9.129)
Is the Electrical Noise problem still present?
Go to step 9 Problem
solved.
9
Replace the Fuser Assembly (RRP 9.80)
Is the Electrical Noise problem still present?
Go to sus-
pect compo-
nents
Problem
solved.