Epson Stylus CX3700 Service Manual page 82

EPSON Stylus CX3700/CX3800/CX3805/CX3810/DX3800/DX3850
Occurrence
timing Detailed phenomenon
CR position
The eject rollers are rotating at high
• Power on
speed when power is turned on. (For
• Anywhere
about 1 cycle.)
• Operation
The Scanner Carriage Unit does not
operate.
• Anywhere
The paper feeding sequence is
• Operation
performed without loading a paper in the
• Anywhere
paper loading sequence.
TROUBLESHOOTING
Table 3-12. Check point for the Fatal error according to each phenomenon
Defective
unit/part name
1. Check if the PF Scale is not damaged or contaminated.
PF Scale /
Main Board Unit
2. Check if the PF Encoder Sensor is not damaged.
1. Check if the grease is enough on the surface of the
Scanner Carriage Shaft.
Scanner Carriage
Shaft
2. Check if the Scanner Carriage Shaft is set correctly.
1. Check if the PE Sensor Connector Cable is connected to
CN3 on the Main Board.
Holder Shaft Unit
2. Check if the PE Sensor Connector Cable is not damaged.
3. Check if the PE Sensor is not damaged.
Troubleshooting
Check point
PF Encoder Sensor
PF Scale
CN3
PE Sensor Connector Cable
Revision A
Remedy
1. Replace the PF Scale with a new one.
2. Replace the Main Board Unit with a new one.
1. After wiping the grease on the Scanner
Carriage Shaft with a dry, soft cloth, coat it
with grease. (Refer to Chapter 6
"MAINTENANCE".)
2. Reassemble the Scanner Carriage Shaft to the
Scanner Carriage Unit.
1. Connect the PE Sensor Connector Cable to
CN3 on the Main Board.
2. Replace the PE Sensor with a new one.
3. Replace the PE Sensor with a new one.
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