Epson C82363 Specifications Page 66

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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
g
components are
associated with this specific problem.
One or more of these components ma
y
have failed partiall
y
or completel
y
. If
y
ou cannot isolate the problem usin
g
this FIP, replace each component listed
below, one at a time, until the problem
disappears.
• Harness Assembl
y
ROS
• Harness Assembl
y
SOS
1
SCANNER MOTOR
Unplu
g
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
y
ou hear the Scanner Motor
runnin
g
before the U2 code appears?
Go to step 3. Replace the
ROS Assembl
y
.
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
g
P/J262.
6. Check the volta
g
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
y
.
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
g
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
y
ou check four separate
+5VDC volta
g
es that run from the HPS
throu
g
h the PWBA Hotaru and on to the
C258MAIN throu
g
h J31. Althou
g
h not a
foolproof test, it should
g
ive
y
ou some
indication of whether or not the +5VDC
portion of the HPS is workin
g
correctl
y
.
Failure to read +5VDC on an
y
of the
test points most likel
y
reflect a HPS
failure, but in some cases an PWBA
Hotaru or C258MAIN failure ma
y
g
ive
y
ou the same readin
g
s.
Replace the
C258MAIN.
Replace the
HPS.
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