Epson AcuLaser C2800 Service Manual page 100

AcuLaser C2800/C2800D/C3800/C3800D
FIP 1-17 Install Black(K) TnrCart
Possible parts that caused the error
IMAGING CARTRIDGE (K)
SENSOR ASSY CRU (K)
Troubleshooting
Step Check
Check the installation of the IMAGING
1
CARTRIDGE (K)
Is the IMAGING CARTRIDGE (K) installed
correctly?
Check the IMAGING CARTRIDGE (K)
2
Is there any damage to the IMAGING
CARTRIDGE (K)?
Check the connection of the SENSOR ASSY
3
CRU (K)
Check the connection state between SENSOR
ASSY CRU (K) and PWBA MCU.
Are P/J193 and P/J19 connected correctly?
Check the continuity of the HARNESS ASSY
4
TNR SNR
Is the continuity between P/J193 <=> P/J19
normal?
Check the power voltage supply to SENSOR
5
ASSY CRU (K).
Measure the voltage between PWBA MCU
ground <=> P/J19-7PIN.
Is the power voltage (approx. +3.3 V) output?
Check the operation of the SENSOR ASSY
6
CRU (K)
Measure the voltage between PWBA MCU
ground <=> P/J19-9PIN.
Does the voltage change when the SENSOR
ASSY CRU (K) is shielded from light?
TROUBLESHOOTING
HARNESS ASSY TNR SNR
PWBA MCU
Yes No
Go to Step [2]. Reinstall the
IMAGING
CARTRIDGE
(K) correctly.
Replace the Go to Step [3].
IMAGING
CARTRIDGE
(K) (p.271)
Go to Step [4]. Reconnect the
P/J193 and P/J19
correctly.
Go to Step [5]. Replace the
HARNESS
ASSY TNR SNR.
Go to Step [6]. Replace the
PWBA MCU.
(p.343)
Replace the Replace the
PWBA MCU. SENSOR ASSY
(p.343) CRU (K).
(p.288)
Engine-related Trouble FIP
FIP 1-18 Install Transfer Unit
Possible parts that caused the error
TRANSFER UNIT
PWBA MCUR
Troubleshooting
Step Check
Check the installation of the TRANSFER
1
UNIT
Is the TRANSFER UNIT installed correctly?
Check the connection of the TRANSFER
2
UNIT
Check the connection state between
TRANSFER UNIT and PWBA MCU.
Are P/J2721, P/J272, and P/J27 connected
correctly?
Check the continuity of the HARNESS ASSY
3
FRONT COVER
Is the continuity between P/J2721 <=> P/J272
normal?
Check the continuity of the HARNESS ASSY
4
R SIDE
Is the continuity between P/J27 <=> P/J272
normal?
Check the power voltage supply to the ADC
5
Sensor in the TRANSFER UNIT.
Measure the voltage between PWBA MCU
ground <=> P/J27-A7PIN.
Is the power voltage (approx. +5 V) output?
Revision C
HARNESS ASSY FRONT COVER
HARNESS ASSY R SIDE
Yes No
Go to Step [2]. Reinstall the
TRANSFER
UNIT correctly.
Go to Step [3]. Reconnect the
P/J2721, P/J272,
and P/J27
correctly.
Go to Step [4]. Replace the
HARNESS
ASSY FRONT
COVER.
Go to Step [5]. Replace the
HARNESS
ASSY R SIDE.
Replace the Replace the
TRANSFER PWBA MCU.
UNIT. (p.268) (p.343)
100
Confidential