Epson Stylus PHOTO 820 Service Manual page 59

EPSON Stylus PHOTO 810/820
Occurrence
timing Detailed phenomenon
CR position
When turning on the power, the CR
motor does not operate at all.
When turning on the power, the CR unit
collides to the Change lever located to
Power on
the front side of the printer.
Outside HP
When turning on the power, the CR unit
collides to the Paper guide upper located
on the Lower housing.
Troubleshooting
Table 3-5. Check point for the fatal error according to each phenomenon
Defective
unit/part name
1. Check if the CR motor connector cable is connected to
CN12 on the Main board.
CR motor 2. Check if the coil resistance of the CR motor is about 7.8
ohm by using the tester. Refer to Table 3-1.
3. Check if the CR motor connector cable is damaged.
1. Check if the Paper return plate disturbs the rotation of
the LD roller.
Holder shaft unit
1. Check if the PF motor connector cable is connected to
CN7 on the Main board.
PF motor 2. Check if the coil resistance of the PF motor is about 6.0
ohm by using the tester. Refer to Table 3-1.
3. Check if the PF motor connector cable is damaged.
1. Check if the Compression spring 1.764 comes off in the
Change lever.
Pump unit
1. Check if the Paper guide upper/left comes off from the
Main frame.
Paper guide upper/
left
Unit Level Troubleshooting
Check point
LD roller
Paper return plate
Change lever
Comp. spring 1.764
Revision A
Remedy
1. Connect the CR motor connector cable to
CN12 on the Main board.
2. Replace the CR motor with new one.
3. Replace the CR motor with new one.
1. Reassemble the ASF unit to the printer.
1. Connect the PF motor connector cable to
CN7 on the Main board.
2. Replace the Printer mechanism with new one.
3. Replace the Printer mechanism with new one.
1. Replace the Printer mechanism with new one.
1. Reassemble the Paper guide upper/left to the
Main frame.
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