Epson 4880 C Service Manual

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 171PRINTER COVER OPENRELEASING PAPER LEVER
LCD
Explanation
Recovery
TOP  COVER  OPEN Generated when Printer Cover is open during one of the movements. 
Under this error, all of CR motion and ink sequences are halted. 
Therefore it may give damages to printing head if this situation 
continues very long time.Close the Printer Cover.
†
When cover was open during flushing before paper feed 
movement, the flushing operation is interrupted, but after closing 
the cover, the flushing and paper feed movement are completed.
†
When cover was open during paper eject, Paper eject error 
(p.166)  occurs after clearing this error.
†
When cover was open during paper feed movement, Paper 
recognition error (p.167) occurs after clearing this error.
†
When cover was open during paper cut movement, Paper cut error 
(p.168) occurs after clearing this error.
†
When cover was open while power was OFF, power will turn OFF 
after capping printhead.
If error is not cleared after cover is closed, check operation of Self 
Testing Menu Cover Sensor p.90 and perform steps below if not 
normal.
†
Check that the cover is closed properly.
†
Replace the P Cover Open Sensor.(p.224)
LCD
Explanation
Recovery
LOAD  PAPER (Except roll paper) Paper Lever was released during standby. Pull down the Paper Lever.
LOAD  PAPER SUCTION
(Roll paper only) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 172RELEASING PAPER LEVER IN OPERATIONPAPER JAM(ASF)PAPER JAM(CR)
LCD
Explanation
Recovery
SET  PAPER  LEVER Paper Lever was released during one of the movements. Pull down the Paper Lever.
†
After lowering the lever, the paper set sequence will begin, and the 
paper type will be automatically determined by paper detection 
sensors (PE Sensor, Rear Manual Insertion Sensor, ASF Paper 
Sensor). In this case, the paper initialization start trigger wait period 
will execute continuously, so the paper set sequence is resumed by 
pressing the [Pause] key. (However, when the Paper Lever has 
been lowered after removing paper without cancelling the job 
(pressing the [Pause] key) while the Paper Lever was raised, 
Paper end/roll paper end (p.166) occurs after clearing this error.
†
When only the PE Sensor turns ON with the Paper Lever lowered, 
front paper supply is determined by the paper set sequence, and 
because a paper jam can be caused by back feeding, a message is 
displayed on the printer about removing paper and operation is 
stopped. In this case, release the Paper Lever again and remove 
the paper, and then lower the lever to clear the error.
†
When only the PE Sensor turns ON at paper feed/print/eject 
movements of ASF or rear manual insertion, Paper eject error 
(p.166) occurs after clearing this error.
LCD
Explanation
Recovery
RELEASE LEVER
REMOVE PAPER  JAMThe ASF Paper Sensor is ON at ASF paper feed movement but the 
PE Sensor does not turn ON. Or the ASF Paper Sensor and PE 
Sensor are both ON, but the paper top edge cannot be detected.Release Paper Lever, remove paper, and pull down the lever.
However, if this was generated during printing, when the paper is 
removed by the above method and the Paper Lever is lowered, Paper 
end/roll paper end (p.166)  occurs after clearing this error.
When only the PE Sensor turns ON at paper feed/eject movements of 
ASF, Paper eject error (p.166) occurs after clearing this error. The Rear Manual Insertion Sensor turned ON at paper feed 
movement by ASF.
ASF Paper Sensor or PE Sensor does not turn OFF at paper eject 
movement after printing by ASF feed.
LCD
Explanation
Recovery
RELEASE LEVER
REMOVE PAPER  JAMThis error occurs when CR Motor step-out is detected due to paper 
jam while CR Motor is operating.Release the Paper Lever to remove the paper, pull down the lever, 
and then turn the printer off and back on. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 173NO MAINTENANCE TANKREAR COVER OPENTYPE-B OPTION I/F CARD ERRORCR LOCK UNLOCKED ERROR
LCD
Explanation
Recovery
NO  MNT  TNK The Maintenance Tank is not set during one of the movements. Set the Maintenance Tank.
LCD
Explanation
Recovery
REAR  COVER  OPEN Generated when Paper Guide Unit is not installed. Under this error, all 
of CR motion and ink sequences are halted. Therefore it may give 
damages to printing head if this situation continues very long time.Properly install Paper Guide Unit.
†
If generated during paper feed movement by ASF, when ASF is 
initialized (including paper eject movement) after installation of the 
Paper Guide Unit, Paper end/roll paper end (p.166) occurs.
†
When Paper Guide Unit is removed during paper feeding, Paper 
jam(ASF) (p.172) occurs.
†
When Paper Guide Unit is removed during roll paper cutting, Paper 
cut error (p.168) occurs.
If error is not cleared after installation of the Paper Guide Unit, check 
the cover sensor operation p.91 by Self Testing Menu and perform 
steps below if not normal.
1. Check removal/installation of Paper Guide Unit.
2. Replace the Rear Cover Sensor. (p.225)
LCD
Explanation
Recovery
OPTION  I/F  ERROR A non-supported I/F Card is installed into the printer. Turn off the printer, remove the Type-B I/F Card, and then turn on 
again.
LCD
Explanation
Recovery
UNLOCK PRINT HEAD Print head (Carriage Unit) may be locked. Turn off the printer, release the lock of print head (Carriage Unit), and 
turn the printer back on p.207. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 174FATAL ERROR
The printer has failed. Because this cannot be recovered by the user, resolve by following 3.2.4 Corrective Actions for Service Request Display (p.175).
LCD
Explanation
Recovery
SERVICE  REQ. nnnnnnnnn
(nnnnnnnnn shows type of fatal 
error.)Occurrence of any error from which the user can not recover the 
printer.If cleared by turning power OFF and then ON again, continue using 
printer intermittently in that condition. If the same code for the fatal 
error is generated again, specify the cause of the problem and replace 
corresponding failed part causing the problem. Life expiration of a long-life part which can cause secondary problems 
if the part is further used.
The printer has been brought into malfunction by unexpected 
operation or by receiving an unexpected command. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 1753.2.4  Corrective Actions for Service Request DisplayService request errors are displayed in the LCD panel with the intention of 
notifying the user of the need for a service engineer to check/replace 
corresponding parts.
This section describes service request errors and explains corrective actions 
for when they occur.SERVICE REQ. 00000101†
Error meaning:
CR Motor life
†
Explanation
Indicates that the number of CR Motor passes has reached the specified 
value. The printer will develop the following problems and stop operation if 
printing is continued in this condition.„
Ink leakage through cracks in Ink Tube.
„
Poor movement of Carriage Unit due to CR Motor internal wear.
†
Remedy
1. Check the number of times that the CR Motor has shuttled at “VIEW 
COUNTER“ from Maintenance Mode 2, look for the measured number 
on the chart, and replace the corresponding parts. (Refer to 1.4.6 
Maintenance Mode 2 (p.90).)
Ο : Replacement required/ Δ : Check the part/ Χ : No arrangement requried

If service request error other than CR, PF servo related 
error, CR axis detection error, CPU related error occurs, 
return the carriage to the home position.
Accumulated number of shuttle movements
Stylus Pro 4800/4880/
4880C
Stylus Pro 4400/4450
Part name
Less 
than 
2,600K
2,600k
∼
5,200k 
and 
above
Less 
than 
1,300K
1,300K
∼
2,600K
∼
3,900K
∼
5,200K 
and 
above
Motor Assy., 
CR
ΧΟΟΧΟΟΟΟ
Pulley, 
Driven/ Shaft, 
Pulley
ΧΟΟΧΟΟΟΟ
Tube, Supply, 
Ink
ΧΔΟΧΔ Δ ΔΟ
Scale, CR
ΧΟΟΧΟΟΟΟ
BOARD 
ASSY., MAIN
ΟΧΧΟΧΧΧΧ 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 1762. The product-life cycle is the same as CR Motor-life cycle, so check and 
maintain all over the printer mechanism. Specially check points are 
shown below.
„
Check for bending or damage to the Head FFC.
„
Check for damage to the CR timing belt and PF timing belt.
„
Check for abnormal noise when carriage unit moves (bearings are 
worn).
„
Check for accumulation of paper dust or dust to paper feed route.
If there is paper dust or dirt, refer to 6.1.2 Important Maintenance 
Items During Service Operations (p.450) and carry out a cleaning.
„
Refer to Chapter6  Maintenance  (p.448), check the lubrication points, 
and lubricate them if they are dry.
3. Clear the CR Motor Life Counter. (Refer to 5.6.4 Reset When CR Unit 
Change (p.442).)
	


Refer to Chapter 5  Adjustment (p.366) and perform 
specified adjustments (including COUNTER CLEARS) after 
replacing the Motor Assy., CR. 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 177SERVICE REQ. 00010000†
Error meaning:
PF Motor Encoder check error
†
Explanation
During initial operation at power on or during PF Motor operation, there 
may be a case where the encoder pulse signal can not be recognized at 
specified intervals. In such a case, this message is displayed and the 
printer stops operating.
†
Cause of trouble„
Disconnected connector for the PF Encoder Sensor.
„
Disconnected connector for the PF Motor.
„
Broken wire for the PF Motor Encoder.
„
Inverted wiring for A and B pulses.
„
Inverted wiring for the PF Motor.
„
PF Motor short
„
PF Motor continuous excitation (voltage applied continuously, motor 
revolutions unusual)
„
Broken power supply fuse for the PF motor driver (on the Main Board )
†
Points to be checked
1. The PF Encoder Sensor and the PF Loop Scale must be free from dust 
and dirt or any other foreign matters.
2. Execute encoder checking by the 1.4.6.1 Self Testing Menu (SELF 
TESTING)(p.91) in Maintenance Mode 2.
3. The PF Timing Belt must be free from any defects and the belt must be 
in proper tension.
4. The PF Roller must rotate smoothly, free from undue load.
5. Measure the resistance value of the PF Motor (17.9 ± 15% [Ω]).
If the PF Motor is found in short mode, replace the BOARD ASSY., 
MAIN at the same time.
6. All the harness must be connected properly and free from short circuit 
or broken wire.
†
Remedy
1. Check for dirt, paper dust or damage to the Loop Scale
2. Connect the PF Encoder Sensor connector or PF Motor connector.
3.PF Timing Belt Tension Adjustment (p.378)
4. Replace the PF Encoder Sensor (p.357)
5. Replace the Motor Assy., PF (p.349)
6. Replace the C593 MAIN Board (p.226) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 178SERVICE REQ. 00010001†
Error meaning:
PF Motor out of step
†
Explanation
During PF Motor operation, there may be a case where the encoder pulse 
signal within the specified range is not input within a specified period of 
time or the pulse width is extremely long or short. In such a case, the PF 
Motor is judged to be out-of-step, so that this message is displayed and the 
printer stops operating.
†
Points to be checked
1. The PF Encoder Sensor and the PF Loop Scale must be free from dust 
and dirt or any other foreign matters.
2. Execute encoder checking by the 1.4.6.1 Self Testing Menu (SELF 
TESTING)(p.91) in Maintenance Mode 2.
3. The PF Timing Belt must be free from any defects and the belt must be 
in proper tension.
4. The PF Roller must rotate smoothly, free from undue load.
5. Measure the resistance value of the PF Motor (17.9 ± 15% [Ω]).
If the PF Motor is found in short mode, replace the BOARD ASSY., 
MAIN at the same time.
6. All the harness must be connected properly and free from short circuit 
or broken wire.
†
Remedy
1. Check for dirt, paper dust or damage to the Loop Scale.
2. Perform the PF Timing Belt Tension Adjustment (p.378)
3. Replace the PF Encoder Sensor (p.357)
4. Replace the Motor Assy., PF (p.349)
5. Replace the C593 MAIN Board (p.226)
SERVICE REQ. 00010002†
Error meaning:
PF Motor over current
†
Explanation
During PF Motor operation, there may be a case where an abnormal 
current out of the specified limits is detected in the PF Motor drive circuit on 
the BOARD ASSY., MAIN or a current exceeding the specified value is 
required. In such a case, this message is displayed and the printer stops 
operating.
†
Points to be checked
1. The PF Loop Scale must be free from dust and dirt or any other foreign 
matters.
2. Measure the resistance value of the PF Motor (17.9 ± 15% [Ω]).
If the PF Motor is found in short mode, replace the BOARD ASSY., 
MAIN at the same time
3. By visual inspection, check the harness of the PF Motor for any 
problem causing a short circuit to the frame.
†
Remedy
1. Check for dirt, paper dust or damage to the Loop Scale.
2. Replace the Motor Assy., PF (p.349)
3. Replace the C593 MAIN Board (p.226) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 179SERVICE REQ. 00010003†
Error meaning:
PF Motor in-position time-out
†
Explanation
At PF stop processing in PF Motor control, there may be a case where the 
paper can not move to the final target position within a specified period of 
time. In such a case, this message is displayed and the printer stops 
operating.
†
Points to be checked
1. The PF Encoder Sensor and the PF Loop Scale must be free from dust 
and dirt or any other foreign matters.
2. Execute encoder checking by the 1.4.6.1 Self Testing Menu (SELF 
TESTING)(p.91) in Maintenance Mode 2.
3. The PF Timing Belt must be free from any defects and the belt must be 
in proper tension.
4. The PF Roller must rotate smoothly, free from undue load.
5. Measure the resistance value of the PF Motor (17.9 ± 15% [Ω]).
If the PF Motor is found in short mode, replace the BOARD ASSY., 
MAIN at the same time.
6. All the harness must be connected properly and free from short circuit 
or broken wire.
†
Remedy
1. Check for dirt, paper dust or damage to the Loop Scale.
2. Perform the PF Timing Belt Tension Adjustment (p.378)
3. Replace the PF Encoder Sensor (p.357)
4. Replace the Motor Assy., PF (p.349)
5. Replace the C593 MAIN Board (p.226)
SERVICE REQ. 00010004†
Error meaning:
CR Motor Encoder check error
†
Explanation
During initial operation at power on or during CR Motor operation, there 
may be a case where the encoder pulse signal is not input at specified 
intervals. In such a case, this message is displayed and the printer stops 
operating.
†
Cause of trouble„
Disconnected FFC for the CR Encoder Sensor.
„
Disconnected connector for the CR Motor.
„
Broken wire for the CR Motor Encoder Sensor.
„
Inverted wiring for A and B pulses.
„
Inverted wiring for the CR Motor.
„
CR Motor short
„
Broken power supply fuse for the PF motor driver (on the Main Board )
†
Points to be checked
1. CR Scale is disconnected from CR Encoder Sensor.
2. The CR Encoder Sensor and the CR Scale must be free from dust and 
dirt or any other foreign matters.
3. Execute encoder checking by the 1.4.6.1 Self Testing Menu (SELF 
TESTING)(p.91) in Maintenance Mode 2.
4. The CR Timing Belt must be free from any defects and the belt must 
be in proper tension.
5. The Carriage Unit must slide smoothly, free from undue load.
6. Measure the resistance value of the CR Motor. (17.9 ± 10% [Ω])
7. All the harness must be connected properly and free from short circuit 
or broken wire.
†
Remedy
1. Check to see if the CR Scale for detection of the encoder pulse is 
removed.
2. Check for dirt, paper dust or damage to the CR Scale.
3. Check if connection of the CR Encoder Sensor connector or Motor 
Assy., CR connector.
4. Perform the CR Timing Belt Tension Adjustment (p.376)
5. Replace the CR Encoder Sensor (p.280)
6. Replace the Motor Assy., CR (p.270)
7. Replace the C593 MAIN Board (p.226) 
						

							EPSON Stylus Pro 4400/4450/4800/4880/4880CRevision CTroubleshooting Troubleshooting Based on Panel Messages 180SERVICE REQ. 00010005†
Error meaning:
CR Motor out of step
†
Explanation
During CR Motor operation, there may be a case where the encoder pulse 
signal within the specified range is not input within a specified period of 
time or the pulse width is extremely long or short. In such a case, the CR 
Motor is judged to be out-of-step, so that this message is displayed and the 
printer stops operating.
†
Cause of trouble„
Defective CR Motor.
„
CR Motor driver damage (42V system short)
„
Broken temperature fuse for Cutter Solenoid.
†
Points to be checked
1. CR Scale is disconnected from CR Encoder Sensor.
2. The CR Encoder and the CR scale must be free from dust and dirt or 
any other foreign matters.
3. Execute encoder checking by the 1.4.6.1 Self Testing Menu (SELF 
TESTING)(p.91) in Maintenance Mode 2.
4. The CR Timing Belt must be free from any defects and the belt must 
be in proper tension.
5. Execute the CR_HP Sensor checking by the 1.4.6.1 Self Testing 
Menu (SELF TESTING)(p.91) in Maintenance Mode 2.
6. The Carriage Unit must slide smoothly, free from undue load.
7. Measure the resistance value of the CR Motor. (17.9 ± 10% [Ω])8. All the harness must be connected properly and free from short circuit 
or broken wire.
†
Remedy
1. Check to see if the CR Scale for detection of the encoder pulse is 
removed
2. Check for dirt, paper dust or damage to the CR Scale.
3. Perform the CR Timing Belt Tension Adjustment (p.376)
4. Replace the CR Encoder Sensor (p.280)
5. Replace the CR_HP Sensor (p.276)
6. Replace the Motor Assy., CR (p.270)
7. Replace the C593 MAIN Board (p.226)
8. Replace the Cutter Solenoid.
SERVICE REQ. 00010006†
Error meaning:
CR Motor over current
†
Explanation
During CR Motor operation, there may be a case where an abnormal 
current out of the specified limits is detected in the CR Motor drive circuit 
on the BOARD ASSY., MAIN or a current exceeding the specified value is 
required. In such a case, this message is displayed and the printer stops 
operating.
†
Points to be checked
1. The CR Scale must be free from dust and dirt or any other foreign 
matters.
2. Execute the CR_HP Sensor checking by the 1.4.6.1 Self Testing 
Menu (SELF TESTING)(p.91) in Maintenance Mode 2.
3. Measure the resistance value of the CR Motor. (19.3± 10% [Ω])
If the CR Motor is found in short mode, replace the BOARD ASSY., 
MAIN at the same time.
4. By visual inspection, check the harness of the CR Motor for any 
problem causing a short circuit to the frame.
†
Remedy
1. Check for dirt, paper dust or damage to the CR Scale.
2. Perform the CR Timing Belt Tension Adjustment (p.376)
3. Replace the CR_HP Sensor (p.276)
4. Replace the Motor Assy., CR (p.270)
5. Replace the C593 MAIN Board (p.226)