Epson AcuLaser C2800 - Page 104

AcuLaser C2800/C2800D/C3800/C3800D Revision C
TROUBLESHOOTING Engine-related Trouble FIP 104
Confidential
FIP 1-25 Service Req E300 (Fuser Failure)
 Possible parts that caused the error
 Troubleshooting
 FUSER UNIT
 HARNESS ASSY FUSER
 HARNESS ASSY LV TOP
 LVPS
 PWBA MCU
Step Check Yes No
1
Check after turning the power OFF and ON.
Does the error recur even when the power is
turned off and back on again?
Go to Step [2]. End of procedure
2
Check the installation of the FUSER UNIT
Is the FUSER UNIT installed correctly?
Go to Step [3]. Reinstall the
FUSER UNIT.
3
Check the connection of the FUSER UNIT
Check the connection state of the following
items.
 FUSER UNIT - PWBA MCU
 FUSER UNIT - LVPS
 LVPS - PWBA MCU
Are P/J171, P/J17, P/J47, P/J14, and P/J501
connected correctly?
Go to Step [4]. Reconnect
P/J171, P/J17,
P/J47, P/J14, and
P/J501 correctly.
4
Check the continuity of the HARNESS ASSY
FUSER
Is there normal continuity between the
following connectors?
 P/J171 <=> P/J17
 P/J171 <=> P/J47
Go to Step [5]. Replace the
HARNESS
ASSY FUSER.
5
Check the continuity of the HARNESS ASSY
LV TOP
Is the continuity between P/J14 <=> P/J501
normal ?
Go to Step [6]. Replace the
HARNESS
ASSY LV TOP.
Step Check Yes No
6
Check after replacing the FUSER UNIT
Replace the FUSER UNIT with a new one.
(p.298)
Does the error still occur after the replacement?
Go to Step [7]. End of procedure
7
Check after replacing the LVPS
Replace the LVPS with a new one. (p.327)
Does the error still occur after the replacement?
Replace the
PWBA MCU.
(p.343)
End of procedure