Epson AcuLaser C2900N Service Manual page 120

Chapter 1 Troubleshooting
Step
Checking the DISPENSE MOTOR (Y, M, C and K) for
rotation.
Does the DISPENSE MOTOR (Y, M, C and K) function
normally?
5 Checked by [Digital Output] - [Yellow Toner Motor,Magenta
Toner Motor,Cyan Toner Motor,Black Toner Motor] in [IOT
Diag] of diagnosis.
During this check, cheat the interlock switch (HARN ASSY
INTERLOCK).
Checking the gears of the DISPENSER ASSY for shape
and operation.
Are the shape and operation of the gears of the
DISPENSER ASSY normal?
Example: For Yellow
6
Gear
Checking the connector for connection.
Check the connectors between the PWBA MCU and
DISPENSE MOTOR (Y, M, C and K).
Are P/J18 and P/J181(Y)/P/J182(M) connected correctly?
Are P/J19 and P/J191(C)/P/J192(K) connected correctly?
Example: For Yellow
7
Does the error still occur when the power is turned OFF and
8
ON?
Checking the HARN ASSY TNR MOT for continuity.
Disconnect J18 from the PWBA MCU.
Disconnect J181(Y)/J182(M)/J191(C)/J192(K) from the
9
DISPENSE MOTOR (YMCK) MOT.
Is each cable of J18 <=> J181/182 continuous? or Is each
cable of J19 <=> J191/192 continuous?
Checking the power to TNR (Y) MOT (MOTOR ASSY
DISP).
Disconnect J18 from the PWBA MCU.
10
Is the voltage across P18-3pin <= > ground on PWBA MCU,
about +24 VDC when the interlock switch (HARN ASSY
INTERLOCK) is pushed.
Epson AcuLaser C2900N
Check
1 - 107
Yes
Go to step 6.
Go to step 11.
MiS01002SA
Go to step 9.
Go to step 9.
Go to step 10.
Replace the
MOTOR ASSY
DISP or FRAME
ASSY MOT.
Revision B
Remedy
No
Go to step 7.
Replace the
defective gear(s)
or DISPENSER
ASSY. (Refer to
RRP5.1.)
Reconnect the
connector(s) P/
J18 and P/J181
surly, then go to
step 8. or
reconnect the
connector(s) P/
J19 and P/J191
surly, then go to
step 8.
End of work.
Replace the
HARN ASSY TNR
MOT.
Replace the
PWBA MCU.
(Refer to RRP8.9.)
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