Epson AcuLaser C2900N Service Manual page 127

Chapter 1 Troubleshooting
Step
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
14
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/J19 from the PWBA MCU.
15
Is the voltage across P18P/19-3pin <= > ground on PWBA
MCU, about +24 VDC when the interlock switch (HARN
ASSY INTERLOCK) is pushed.
Checking after replacing the TONER CARTRIDGE (Y, M, C
or K).
Replace the TONER CARTRIDGE (Y, M, C or K), and check
16
that the lock key is in the lock position. (Refer to RRP5.4.)
Does the error still occur when the power is turned OFF and
ON?
Checking after replacing the DRUM CARTRIDGE.
Replace the DRUM CARTRIDGE. (Refer to RRP4.6.)
17
Does the error still occur when the power is turned OFF and
ON?
Checking after resetting the TRANSFER ASSY.
Reseat the TRANSFER ASSY.
18
Does the error still occur when the power is turned OFF and
ON?
Epson AcuLaser C2900N
Check
1 - 114
Remedy
Yes
Replace the
Go to step 15. HARN ASSY TNR
MOT.
Replace the
MOTOR ASSY Replace the
DISP or FRAME PWBA MCU.
ASSY MOT. (Refer to RRP8.9.)
(Refer to RRP5.1.)
Go to step 17. End of work.
Go to step 18. End of work.
Replace the
TRANSFER
End of work.
ASSY. (Refer to
RRP6.3.)
Revision B
No
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