Epson AcuLaser C2800 - Page 96

AcuLaser C2800/C2800D/C3800/C3800D Revision C
TROUBLESHOOTING Engine-related Trouble FIP 96
Confidential
FIP 1-10 Check Transparency
 Possible parts that caused the error
 Troubleshooting
 PWBA OHP LED
 PWBA OHP SENSOR
 PWBA MCU
 HARNESS ASSY OHP SNR
 HARNESS ASSY OHP
Step Check Yes No
1
Check the connection of the PWBA OHP
LED and the PWBA OHP SENSOR
Check the connection state of the following items.
 PWBA OHP LED - PWBA MCU
 PWBA OHP SENSOR - PWBA MCU
Are P/J2411, P/J2412, P/J241, and P/J24
connected correctly?
Go to Step [2]. Reconnect
P/J2411, P/J2412,
P/J241, and P/J24
correctly.
2
Check the continuity of the HARNESS ASSY
OHP SNR
Is the continuity between P/J2412 <=> P/J241
normal?
Go to Step [3]. Replace the
HARNESS
ASSY OHP SNR.
3
Check the continuity of the HARNESS ASSY
OHP
Is the continuity between P/J241 <=> P/J24
normal ?
Go to Step [4]. Replace the
HARNESS
ASSY OHP.
4
Check the power voltage supply to PWBA
OHP LED
Measure the voltage between PWBA MCU
ground <=> P/J24-1PIN.
Is the power voltage (approx. +3.3 V) output?
Go to Step [5]. Replace the
PWBA MCU.
(p.343)
5
Replace of the PWBA OHP LED
Replace the PWBA OHP LED. (p.253)
Was the trouble fixed?
End of procedure Go to Step [6].
6
Check the continuity of the HARNESS ASSY
OHP SNR
Is the continuity between P/J2411 <=> P/J241
normal?
Go to Step [7]. Replace the
HARNESS
ASSY OHP SNR.
7
Check the continuity of the HARNESS ASSY
OHP
Is the continuity between P/J241 <=> P/J24
normal ?
Replace the
PWBA OHP
SENSOR.
(p.240)
Replace the
HARNESS
ASSY OHP.
Step Check Yes No