Epson AcuLaser C2900N Service Manual page 67

Chapter 1 Troubleshooting
FIP-1.27 042-372 / 042-373: IOT K Mode Solenoid Error 1/2
Step
Possible causative parts:
DRIVE ASSY PH (PL7.1.4)
PWBA MCU (PL8.2.13)
HARN ASSY KSNR REGCL (PL9.1.9)
Does the error still occur when the power is turned OFF and
1
ON?
Checking the K Mode Solenoid (Color Mode Switching
Solenoid) for operation.
Does the K Mode Solenoid function normally?
Checked by [Digital Output] - [K Mode Solenoid] in [IOT
2 Diag] of diagnosis.
During this check, close the COVER ASSY FRONT MG.
Does the K Mode Solenoid click sound arise from the
DRIVE ASSY PH, when the K Mode Solenoid check is
performed?
Checking after resetting the DRIVE ASSY PH.
Reseat the DRIVE ASSY PH.
3
Does the error still occur when the power is turned OFF and
ON?
Checking the connector of the K Mode Solenoid in the
DRIVE ASSY PH for connection.
Check the connection between the PWBA MCU and K
Mode Solenoid.
Is P/J24 connected correctly?
4
Does the error still occur when the power is turned OFF and
5
ON?
Checking the power to the K Mode Solenoid.
Disconnect J24 from the PWBA MCU.
6 Is the voltage across P24-1pin <=> ground on the PWBA
MCU, about +24 VDC when the Interlock Switch (HARN
ASSY INTERLOCK) is pushed?
Checking the K Mode Solenoid for resistance.
Disconnect P/J24 from the PWBA MCU.
7
Is the resistance across J24-1 and J24-2 about 80 to 110-
ohm?
Epson AcuLaser C2900N
Check
1 - 54
Remedy
Yes
Go to step 2. End of work.
Go to step 3. Go to step 4.
Go to step 8. End of work.
Reconnect the
connector P/J24
Go to step 6.
correctly, then go
to step 5.
Go to step 6. End of work.
Replace the
Go to step 7. PWBA MCU.
(Refer to RRP8.9.)
Replace the Replace the
PWBA MCU. DRIVE ASSY PH.
(Refer to RRP8.9.) (Refer to RRP7.3.)
Revision B
No
Confidential