EPSON Stylus Pro 4400/4450/4800/4880/4880C
Revision C
Troubleshooting
Troubleshooting Based on Panel Messages
178
SERVICE 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
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
3.
Replace the
4.
Replace the
5.
Replace the
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
3.
Replace the
Summary of Contents for Stylus Pro 4800 Portrait Edition
Page 9: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 113: ...C H A P T E R 2 OPERATINGPRINCIPLES ...
Page 156: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 200: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 366: ...C H A P T E R 5 ADJUSTMENT ...
Page 448: ...C H A P T E R 6 MAINTENANCE ...
Page 457: ...C H A P T E R 7 APPENDIX ...