EPSON EPL-N1600 Chapter 3 Troubleshooting
Rev. A 68
1.2 SERVICE REQ E0004
The ROS (Raster Output Scanner) Assy. is defective.
Step Actions and Questions Yes No
SUSPECT COMPONENTS
The followin
components are
associated with this specific problem.
One or more of these components ma
have failed partiall
or completel
. If
ou cannot isolate the problem usin
this FIP, replace each component listed
below, one at a time, until the problem
disappears.
• Harness Assembl
ROS
• Harness Assembl
SOS
1
SCANNER MOTOR
Unplu
J27 (Main Drive Motor) from
CN227 of the C258MAN and J222
(Fan) from the HPS.
1. Run a test print.
2. Listen for the sound of the Scanner
Motor.
Can
ou hear the Scanner Motor
runnin
before the U2 code appears?
Go to step 3. Replace the
ROS Assembl
.
2
LASER DIODE POWER
1. Remove the Main Cover.
2. Remove the Lever Jam Clear.
3. Switch on printer power.
4. Cheat the Main Interlock Switch.
5. Do not unplu
P/J262.
6. Check the volta
e between P262-7
and P262-5 on the PWB LD.
Is there +5 VDC between P262-5 and
P262-7?
Replace the
ROS Assembl
.
Go to step 4.
Step Actions and Questions Yes No
3
+5 VDC POWER SUPPLY
1. Remove the Cover Side, and then
C258MAIN board.
2. Check the volta
e between:
-FG and J31-A10
-FG and J31-A11
-FG and J31-B11
Is there +5VDC between:
FG and J31-A10
FG and J31-A11
FG and J31-B11?
Note:
Since there is no convenient test point
on the HPS to check for +5VDC, this
step has
ou check four separate
+5VDC volta
es that run from the HPS
throu
h the PWBA Hotaru and on to the
C258MAIN throu
h J31. Althou
h not a
foolproof test, it should
ive
ou some
indication of whether or not the +5VDC
portion of the HPS is workin
correctl
.
Failure to read +5VDC on an
of the
test points most likel
reflect a HPS
failure, but in some cases an PWBA
Hotaru or C258MAIN failure ma
ive
ou the same readin
s.
Replace the
C258MAIN.
Replace the
HPS.
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