Epson EPL-N1600 Option, Service Manual

Page: 74 / 210

EPSON EPL-N1600 Chapter 3 Troubleshooting
Rev. A 76
3.2.2 Troubleshooting with Printer Operation
2.1 PRINTER DOES NOT OPERATE PROPERLY
Step Actions and Questions Yes No
SUSPECT COMPONENTS
The following components are
associated with this specific problem.
One or more of these components may
have failed partially or completely. If you
cannot isolate the problem using this
FIP, replace each component listed
below, one at a time, until the problem
disappears.
• No recommendations
1 AC POWER CORD
Inspect the AC Power Cord.
Is the AC Power Cord plugged into the
back of the printer, and is the other end
plugged into an AC wall outlet?
Go to step 2. Connect the
AC Power Cord
to the printer,
and plug it into
a wall outlet.
2 AC POWER
Check the voltage at the wall outlet.
Is there approximately 110 VAC (or 220
VAC for the 220 VAC model) at the AC
wall outlet?
Go to step 3. Troubleshoot
the AC power
at the wall
outlet for a
possible tripped
breaker or
open circuit.
3 +24VDC POWER SUPPLY
1. Remove the C258MAIN.
1. Slide the PWBA Hotaru out about an
inch so it disconnects from the HPS.
1. Switch ON Main Power.
1. Inspect the Fan IOT.
Is the Fan rotating?
Go to step 5. Go to step 4.
4 +24VDC POWER SUPPLY
1. Slide the PWBA Hotaru out about an
inch so it disconnects from the HPS.
2. Disconnect the Fan IOT from P/J222.
3. Switch ON Main Power.
4. Check the voltage between P/J222-3
and P/J222-1.
Is there +24VDC between P/J222-3 and
P/J222-1?
Go to step 5. Replace the
HPS.
5 +5 VDC POWER SUPPLY
1. Remove the C258MAIN.
2. Check the voltage between:
P31-A10 and FG
P31-A11 and FG
P31-B11 and FG
Is there +5VDC between P31 and FG?
Note:
Since there is no convenient test point
on the HPS to check for +5VDC, this
step has you check four separate
+5VDC voltages that run from the HPS
through the PWBA Hotaru and on to the
C258MAIN through J31. Although not a
foolproof test, it should give you some
indication of whether or not the +5VDC
portion of the HPS is working correctly.
Failure to read +5VDC on any of the test
points most likely reflect a HPS failure,
but in some cases an PWBA Hotaru
failure may give you the same readings.
Go to step 6. Replace the
HPS
6 PWBA HOTARU
1. Remove the C258MAIN.
2. Check the voltages between:
P31-A10 and FG
P31-A11 and FG
P31-B11 and FG
Is there +5VDC between P31 and FG?
Go to step 7. Replace the
PWBA Hotaru.
Step Actions and Questions Yes No