Epson EPL-N4000 - Page 107

EPSON EPL-N4000/EPL-N4000+ Chapter 3 Troubleshooting
Rev.B 93
9. All volta
g
e values
g
iven in the FIPs are approximate values. Actual
measured volta
g
es may vary more than 25% from the values stated
in the FIPs. The main purpose of most volta
g
e readin
g
s taken in the
FIPs is to determine whether or not a component is receivin
g
the
correct HIGH volta
g
e value from the power supply and if
g
atin
g
(a
volta
g
e drop) occurs durin
g
component actuation. Gatin
g
si
g
nals
may be nothin
g
more than a pulse, resultin
g
in a momentary drop in
volta
g
e that may be difficult or impossible to read on the avera
g
e
multimeter.
10. FIPs may instruct you to remove or replace a component. Refer to
Section 10 Removal and Replacement Procedures for information
on how to remove and reinstall a component.
11. When a FIP instructs you to replace a component, and that
component is part of a lar
g
er assembly, you should replace the
entire assembly.
Figure 3-1. FIP Flowchart
Start
Is
the printer
messa
g
e
indicated?
Abnormal
operations which
are not indicated
by error codes.
Any
problems on
ima
g
e quality?
Electrical Noise
(Secondary FIPs)
Go to Troubleshootin
g
by printer messa
g
e
Go to Troubleshooin
g
by Printer Performance
(not indicated by error codes)
Go to Troubleshootin
g
by Ima
g
e Quality
Yes
No
Yes
No
No
Yes