EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 131
Table 3-60. Electrical Noise Troubleshooting Table 3-61. Electrical Noise Troubleshooting
Step Actions and Questions Yes No
2
OPTION ISOLATION
If the printer has options installed, such
as Duplex Unit or the Hi
Feeder, remove each option one at a
time, and see how the printer
operations without that option installed.
Does the Electrical Noise problem
go away when you remove a specific
option?
Go to step 3 Go the
Technical
Manual for the
problem
option and
troubleshoot
for arcin
solenoids,
motor, or
fault
.
3
AC GROUND
Check the AC wall outlet.
Is the AC wall outlet correctly wired
and grounded?
Go to step 4 Repair the AC
wall outlet
Steps 4 through 11 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
EP CARTRIDGE REPLACEMENT
Replace the EP Cartrid
e
Is the Electrical Noise problem still
present?
Go to step 5 Problem
solved
5
MAIN SWITCH REPLACEMENT
Replace the Main Power Switch.
Is the Electrical Noise problem still
present?
Go to step 6 Problem
solved
Step Actions and Questions Yes No
6
HVPS REPLACEMENT
Replace the HVPS Assembl
.
Is the Electrical Noise problem still
present?
Go to step 7 Problem
solved
7
AC DRIVER REPLACEMENT
Replace the AC Driver PWB.
Is the Electrical Noise problem still
present?
Go to step 8 Problem
solved
8
LVPS ASSEMBLY REPLACE-
MENT
Replace the LVPS Assembl
.
Is the Electrical Noise problem still
present?
Go to step 9 Problem
solved
9
FUSER ASSEMBLY REPLACE-
MENT
Replace the Fuser Assembl
.
Is the Electrical Noise problem still
present?
Go to step
10
Problem
solved.
10
MCU PWB REPLACEMENT
Replace the MCU PWB.
Is the Electrical Noise problem still
present?
Go to step
11
Problem
solved.
11
MAIN DRIVE ASSEMBLY
REPLACEMENT
Replace the Main Drive Assembl
.
Is the Electrical Noise problem still
present?
Go to
Suspect
Component
s
Problem
solved.
To Next Page
Loading...
