Service manual

EPSON FX-890/2190 Revision B
Troubleshooting Troubleshooting Based on Symptoms 57
3.2.4 Abnormal paper feeding
Table 3-6. Abnormal paper feeding
Step Action and Question Yes No
Parts below can be the source of this error (Chapter 4 Disassembly and Assembly)
• Front PE (Paper End) Detector (p.87)
• Harness of Front PE Detector
• Rear PE Detector (p.87)
• Harness of Rear PE Detector
• Release Detector (p.86)
• Harness of Release Detector
• Rear Paper Guide Assembly (p.90)
• PF Motor (p.83)
• PF Gear Train (p.84)
• C524MAIN Board (p.74)
1
Checking for foreign matters
Make sure that there are no foreign matters in the
following areas.
•Paper path
• PF Gear Train
♦Is the problem solved?
Problem
solved
Go to Step 2
2
Connection of sensor
Make sure that the following sensors are connected
properly:
• Front PE Detector (CN6)
• Rear PE Detector (CN7)
• Release Detector (CN11)
♦Is the problem solved?
Problem
solved
Go to Step 3
3
Defective sensor
Replace the defective one of the following sensors
with a new one:
• Front PE Detector (CN6)
• Rear PE Detector (CN7)
• Release Detector (CN11)
♦Is the problem solved?
Replace the
defective
sensors.
Go to Step 4
4
Harness of sensor
Replace the defective harness of the following
sensors with a new one:
• Front PE Detector (CN6)
• Rear PE Detector (CN7)
• Release Detector (CN11)
♦Is the problem solved?
Replace the
defective
harness.
Go to Step 5
5
Paper changeover mechanism
♦Is the paper feeding direction switched when you
operate the release lever?
Go to Step 6
Check PF
Gear Train
(p.84)
6
Paper feed mechanism
With power turned off, check to see if you can feed
paper by turning the platen knob by hand.
♦Can paper be fed by turning the platen knob by
hand?
Go to Step 7
Check the
paper feed
mechanism
7
PF Motor
Replace the PF Motor with a new one.
♦Is the problem solved?
Replace the PF
Motor.
Go to Step 8
8
Main Board
Replace the Main Board with a new one.
♦Is the problem solved?
Replace the
Main Board.
Go to 3.2.11
Electrical
Noise (p.62)
Table 3-6. Abnormal paper feeding
Step Action and Question Yes No