6-4 magicolor 330 - Base Engine Service Manual
Secondary Fault Isolation Procedures

6.1 - Electrical Noise, continued

Step Actions and Questions Yes No
7Replace the MCU PWB (RRP 9.123)
Is the Electrical Noise problem still present?
Go to step 8 Problem
solved.
8Replace the Controller PWB (RRP 9.129)
Is the Electrical Noise problem still present?
Go to step 9 Problem
solved.
9Replace the Fuser Assembly (RRP 9.80)
Is the Electrical Noise problem still present?
Go to sus-
pect compo-
nents
Problem
solved.