Epson EPL-N1600 Service Manual page 68

EPSON EPL-N1600
1.4 SERVICE REQ E0005
Fan IOT unit or Duplex Unit Fan is in trouble.
Step Actions and Questions
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.
• Fan IOT
• Fan Assembly Duplex
• HPS
• PWBA Hotaru
• C258MAIN Board
1 FAN IOT
Does the Fan rotate when you switch on
printer power?
2 FAN SIGNAL
1. Disconnect P/J222 from the HPS.
2. Check the voltage between P/J222-3
and P/J222-1.
Is there +12~24VDC between P/J222-3
and P/J222-1?
PWBA HOTARU
3
1. Remove the PWBA Hotaru.
2. Check for the continuity between P21-
B2 and P31-B12.
Is there continuity between P21 and
P31?
Rev. A
Yes No
Go to step 3. Go to step 2.
Replace the Replace the
Fan. HPS.
Replace the Replace the
C258MAIN PWBA Hotaru.
Board.
Chapter 3 Troubleshooting
70