Epson C 2900 Manual

							1 - 48 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.22  027-446 / 027-452: IPv6 duplicate / IPv4 duplicate
Step CheckRemedy
Ye s N o
Possible causative parts:
-
1Checking the IP addresses.
Remove the duplicate IP addresses.
Does the error still occur when the power is turned off and 
on?End of work.Upgrade the 
firmware. 
						

							1 - 49 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.23  041-340: IOT NVRAM Error
If the error occurred after replacing the PWBA MCU, transfer the internal data of the old 
PWBA MCU to a new one.
*1: Though some kind of foreign noise would be possible cause, go to FIP Electrical Noise in Other FIP 
and check, to make sure. Step CheckRemedy
Ye s N o
Possible causative parts:
DRUM CARTRIDGE (PL4.1.21)
PWBA MCU (PL8.2.13)
HARN ASSY PHD XPRO (PL9.1.11)
1Does the error still occur after several ON/OFF procedures 
of the power?Go to step 2. End of work. *1
2Checking after resetting the DRUM CARTRIDGE and 
TONER CARTRIDGEs.
Reseat the DRUM CARTRIDGE and four TONER 
CARTRIDGEs.
Does the error still occur when the power is turned OFF and 
ON?Go to step 3. End of work. *1
3Checking after resetting the PWBA MCU.
Reseat the PWBA MCU.
Does the error still occur when the power is turned OFF and 
ON?Go to step 4. End of work. *1
4Checking the connectors for connection.
Check the connections between the PWBA EEPROM and 
PWBA MCU.
Are P/J 144, and P/J 42 connected surely?Go to step 6.Reconnect the 
connector(s) P/ 
J42 and P/J144 
surely, then go to 
step 5.
5Does the error still occur when the power is turned OFF and 
ON?Go to step 6. End of work.
6Checking the HARN ASSY PHD XPRO for continuity.
Disconnect J42 from the PWBA MCU.
Disconnect J144 from the PWBA EEPROM (XPRO).
Is each cable of J42  J144 continuous?Go to step 7.Replace the 
HARN ASSY PHD 
XPRO.
7Checking after replacing the PWBA MCU.
Replace the PWBA MCU. (Refer to RRP8.9.)
Does the error still occur when the power is turned OFF and 
ON?Go to Electrical 
Noise.End of work. 
						

							1 - 50 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.24  042-313: IOT Fan Motor Failure
Step CheckRemedy
Ye s N o
Possible causative parts:
FAN (PL8.1.1)
PWBA LVPS (PL8.2.1)
PWBA MCU (PL8.2.13)
HARNESS ASSY LVPS MAIN MG SFP (PL9.1.3)
1Does the error still occur when the power is turned OFF and 
ON?Go to step 2. End of work.
2Checking the FAN for rotation.
Does the FAN function normally?
Checked by [Digital Output] - [Main Motor or Fan Motor] in 
[IOT Diag] of diagnosis.
During this check, close the COVER ASSY FRONT MG.Replace the 
PWBA MCU. 
(Refer to RRP8.9.)Go to step 3.
3Check the connection between the FAN and the PWBA 
LVPS.
Is P/J503 on the PWBA LVPS connected correctly?Go to step 5.Reconnect the 
connector P/J 503 
correctly, then go 
to step 4.
4Does the error still occur when the power is turned OFF and 
ON?Go to step 5. End of work.
5Check the connections between the PWBA LVPS and 
PWBA MCU.
Are P/J501 and P/J14 connected correctly?
Go to step 7.Reconnect the 
connector(s) P/
J501 and P/J14 
correctly, then go 
to step 6.
6Does the error still occur when the power is turned OFF and 
ON?Go to step 7. End of work.
7Checking the HARNESS ASSY LVPS MAIN MG SFP for 
continuity.
Disconnect J501 from the PWBA LVPS.
Disconnect J14 from the PWBA MCU.
Is each cable of J501  J14 continuous?Go to step 8.Replace the 
HARNESS ASSY 
LVPS MAIN MG 
SFP. 
						

							1 - 51 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential 8Checking the power to the FAN.
Disconnect J503 from the PWBA LVPS.
Is the voltage across P503-1pin  ground on the PWBA 
LVPS, about +24 VDC when the interlock switch (HARN 
ASSY INTERLOCK) is pushed?
Replace the FAN. 
(Refer to RRP8.1.)Go to step 9.
9Checking after replacing the PWBA LVPS.
Replace the PWBA LVPS. (Refer to RRP8.5.)
Does the error still occur when the power is turned OFF and 
ON?Replace the 
PWBA MCU. 
(Refer to RRP8.9.)End of work. Step CheckRemedy
Ye s N o 
						

							1 - 52 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.25  042-325: IOT Main Motor Failure
Step CheckRemedy
Ye s N o
Possible causative parts:
DRIVE ASSY MAIN (PL7.1.2)
PWBA MCU (PL8.2.13)
HARNESS ASSY MAIN MOT MG SFP (PL9.1.7)
1Does the error occur when the power is turned OFF and 
ON?Go to step 2. End of work.
2Checking after resetting the DRUM CARTRIDGE.
Reseat the DRUM CARTRIDGE.
Does the error still occur when the power is turned OFF and 
ON?Go to step 3. End of work.
3Checking the Main Motor for rotation.
Does the Main Motor function normally?
- PC Operation :
Checked by [Main Motor Operation Check] of the [Machine 
Check] in Tool Box.
- Panel Operation :
Checked by [Digital Output] - [Main Motor] of [IOT Diag] in 
diagnosis.Replace the 
PWBA MCU. 
(Refer to RRP8.9.)Go to step 4.
4Checking the connectors of the MAIN MOTOR for 
connection.
Check the connections between the PWBA MCU and 
DRIVE ASSY MAIN.
Are P/J21 and P/J211 connected correctly?
Go to step 6.Reconnect the 
connector(s) P/
J21 and/or P/J211 
correctly, then go 
to step 5.
5Does the error still occur when the power is turned OFF and 
ON?Go to step 6. End of work.
6Checking the HARNESS ASSY MAIN MOT MG SFP for 
continuity.
Disconnect J21 from the PWBA MCU.
Disconnect J211 from the DRIVE ASSY MAIN.
Is each cable of J21  J211 continuous?Go to step 7.Replace the 
HARNESS ASSY 
MAIN MOT MG 
SFP.
7Checking after resetting the DRIVE ASSY MAIN.
Reseat the DRIVE ASSY MAIN.
Does the error still occur when the power is turned OFF and 
ON?Go to step 8. End of work.
8Checking the power to the DRIVE ASSY MAIN.
Disconnect J21 from the PWBA MCU.
Are the voltages across J21-2pin/J21-4pin  ground on 
the PWBA MCU, about +24 VDC when the interlock switch 
(HARN ASSY INTERLOCK) is pushed?Replace the 
DRIVE ASSY 
MAIN. (Refer to 
RRP7.2.)Replace the 
PWBA MCU. 
(Refer to RRP8.9.) 
						

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Epson AcuLaser C2900NRevision B
Confidential
FIP-1.26  042-326: IOT Sub Motor Failure
Step CheckRemedy
Ye s N o
Possible causative parts:
DRIVE ASSY SUB (PL7.1.1)
PWBA MCU (PL8.2.13)
HARNESS ASSY SUB MOT MG SFP (PL9.1.8)
1Does the error still occur when the power is turned OFF and 
ON?Go to step 2. End of work.
2Checking after resetting the fuser unit and DRUM 
CARTRIDGE
Reseat the fuser unit and DRUM CARTRIDGE.
Warning: Start the operation after the fuser unit has 
cooled down.
Does the error still occur when the power is turned OFF and 
ON?Go to step 3. End of work.
3Checking the Sub Motor for rotation.
Does the Sub Motor function normally?
- PC Operation :
Checked by [Fuser Motor Operation Check] of the [Machine 
Check] in Tool Box.
- Panel Operation : Checked by [Digital Output] - [Sub 
Motor] of [IOT Diag] in diagnosis.Replace the 
PWBA MCU. 
(Refer to RRP8.9.)Go to step 4.
4Checking the connectors of the SUB MOTOR for 
connection.
Check the connections between the PWBA MCU and 
DRIVE ASSY SUB.
Are P/J22 and P/J221 connected correctly?
Go to step 6.Reconnect the 
connector(s) P/
J22 and/or P/J221 
correctly, then go 
to step 5.
5Does the error still occur when the power is turned OFF and 
ON?Go to step 6. End of work.
6Checking the HARNESS ASSY SUB MOT MG SFP for 
continuity.
Disconnect J22 from the PWBA MCU.
Disconnect J221 from the DRIVE ASSY SUB.
Is each cable of J22  J221 continuous?Go to step 7.Replace the 
HARNESS ASSY 
SUB MOT MG 
SFP.
7Checking after resetting the DRIVE ASSY SUB.
Reseat the DRIVE ASSY SUB.
Does the error still occur when the power is turned OFF and 
ON?Go to step 8. End of work.
8Checking the power to the DRIVE ASSY SUB.
Disconnect J22 from the PWBA MCU.
Are the voltages across J22-2pin/J22-4pin  ground on 
the PWBA MCU, about +24 VDC when the interlock switch 
(HARN ASSY INTERLOCK) is pushed?Replace the 
DRIVE ASSY 
SUB. (Refer to 
RRP7.1.)Replace the 
PWBA MCU. 
(Refer to RRP8.9.) 
						

							1 - 54 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.27  042-372 / 042-373: IOT K Mode Solenoid Error 1/2
Step CheckRemedy
Ye s N o
Possible causative parts:
DRIVE ASSY PH (PL7.1.4)
PWBA MCU (PL8.2.13)
HARN ASSY KSNR REGCL (PL9.1.9)
1Does the error still occur when the power is turned OFF and 
ON?Go to step 2. End of work.
2Checking 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 
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?Go to step 3. Go to step 4.
3Checking after resetting the DRIVE ASSY PH.
Reseat the DRIVE ASSY PH.
Does the error still occur when the power is turned OFF and 
ON?Go to step 8. End of work.
4Checking 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?
Go to step 6.Reconnect the 
connector P/J24 
correctly, then go 
to step 5.
5Does the error still occur when the power is turned OFF and 
ON?Go to step 6. End of work.
6Checking the power to the K Mode Solenoid.
Disconnect J24 from the PWBA MCU.
Is the voltage across P24-1pin  ground on the PWBA 
MCU, about +24 VDC when the Interlock Switch (HARN 
ASSY INTERLOCK) is pushed?Go to step 7.Replace the 
PWBA MCU. 
(Refer to RRP8.9.)
7Checking the K Mode Solenoid for resistance.
Disconnect P/J24 from the PWBA MCU.
Is the resistance across J24-1 and J24-2 about 80 to 110-
ohm?Replace the 
PWBA MCU. 
(Refer to RRP8.9.)Replace the 
DRIVE ASSY PH. 
(Refer to RRP7.3.) 
						

							1 - 55 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential 8Checking the connectors of the K Mode Sensor in the 
DRIVE ASSY PH for connection
Check the connections between the PWBA MCU and K 
Mode Sensor.
Are P/J26 and P/J261 connected correctly?
Go to step 10.Reconnect the 
connector(s) P/
J26 and/or P/
J261correctly, 
then go to step 9.
9Does the error still occur when the power is turned OFF and 
ON?Go to step 10. End of work.
10Checking the HARN ASSY KSNR REGCL for continuity.
Disconnect J26 from the PWBA MCU.
Disconnect J261 from the K Mode Sensor.
Is each cable of J26  J261 continuous?Go to step 11.Replace the 
HARN ASSY 
KSNR REGCL.
11Checking the power to the K Mode Sensor.
Disconnect J26 from the PWBA MCU.
Is the voltage across P26-1pin  ground on the PWBA 
MCU, about +3.3 VDC?Go to step 12.Replace the 
PWBA MCU. 
(Refer to RRP8.9.)
12Checking the K Mode Sensor for operation.
Remove the DRIVE ASSY PH from the printer once, but P/
J261 and P/J24 should be connected.
Checked by [Digital Input] - [DI-04] in [IOT Diag] of 
diagnosis.
During this check, close the COVER ASSY FRONT MG.
Does the status (L or H) change, when a piece of paper is 
inserted into the gap of the K Mode Sensor?Replace the 
PWBA MCU. 
(Refer to RRP8.9.)Replace the 
DRIVE ASSY PH. 
(Refer to RRP7.3.) Step CheckRemedy
Ye s N o 
						

							1 - 56 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.28  042-700:IOT Over Heat Stop
Step CheckRemedy
Ye s N o
Possible causative parts:
SENSOR HUM (PL8.2.7)
PWBA MCU (PL8.2.13)
HARN ASSY HUM (PL9.1.6)
1Checking the connectors for connection.
Check the connections between the PWBA MCU and 
SENSOR HUM.
Are P/J20 and P/J201 connected surely?Go to step 3.Reconnect the 
connector(s) P/
J20 and/or P/ 
J201 surely, then 
go to step 2
2Does the error still occur when the power is turned off and 
on?Go to step 3. End of work.
3Checking the HARN ASSY HUM for continuity.
Disconnect P/J20 from the PWBA MCU.
Disconnect P/J201 from the SENSOR HUM.
Is each cable of P/J20  P/J201 continuous?Go to step 4.Replace the 
HARN ASSY 
HUM.
4Checking the output power of SENSOR HUM.
Disconnect P/J20 on the PWBA MCU.
Is the voltage across ground  J20-4pin on the PWBA 
MCU, about +5VDC?Replace the 
SENSOR HUM. 
(Refer to RRP8.7.)Replace the 
PWBA MCU. 
(Refer to RRP8.9.) 
						

							1 - 57 Chapter 1   Troubleshooting
Epson AcuLaser C2900NRevision B
Confidential
FIP-1.29  061-370: IOT ROS Failure
Step CheckRemedy
Ye s N o
Possible causative parts:
ROS ASSY (PL4.1.1)
HARN ASSY ROS RE (PL4.1.22)
HARN ASSY ROS VIDEO (PL4.1.23)
PWBA MCU (PL8.2.13)
1Does the error still occur when the power is turned OFF 
and ON?Go to step 2. End of work.
2Checking after resetting the PWBA MCU.
Reseat the PWBA MCU.
Does the error still occur when the power is turned OFF 
and ON?Go to step 3. End of work.
3Checking after resetting the ROS ASSY.
Reseat the ROS ASSY.
Does the error still occur when the power is turned OFF 
and ON?Go to step 4. End of work.
4Check the connections between the ROS ASSY and 
PWBA MCU.
Are P/J40, P/J41, P/J411 and P/J412 connected correctly?
Go to step 6.Reconnect the 
connector(s) P/
J40, P/J41, P/J411 
and/or P/J412 
correctly, then go 
to step 5.
5Does the error still occur when the power is turned OFF 
and ON?Go to step 6. End of work.
6Checking the HARN ASSY ROS RE for continuity.
Disconnect P/J40 from the PWBA MCU.
Disconnect P/J411 from the ROS ASSY.
Is each cable of J40  J411 continuous?Go to step 7.Replace the 
HARN ASSY ROS 
RE.
7Checking the HARN ASSY ROS VIDEO for continuity.
Disconnect J41 from the PWBA MCU.
Disconnect J412 from the ROS ASSY.
Is each cable of J41  J412 continuous?Go to step 8.Replace the 
HARN ASSY ROS 
VIDEO.
8Checking after replacing the ROS ASSY.
Replace the ROS ASSY. (Refer to RRP4.1.)
Does the error still occur when the power is turned OFF 
and ON?Replace the 
PWBA MCU. 
(Refer to RRP8.9.)End of work.