Epson Stylus Photo 820 - Page 59

EPSON Stylus PHOTO 810/820 Revision A
Troubleshooting Unit Level Troubleshooting 59
Table 3-5. Check point for the fatal error according to each phenomenon
Occurrence
timing
CR position
Detailed phenomenon
Defective
unit/part name
Check point Remedy
Power on
Outside HP
When turning on the power, the CR
motor does not operate at all.
CR motor
1. Check if the CR motor connector cable is connected to
CN12 on the Main board.
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. 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.
When turning on the power, the CR unit
collides to the Change lever located to
the front side of the printer.
Holder shaft unit
1. Check if the Paper return plate disturbs the rotation of
the LD roller.
1. Reassemble the ASF unit to the printer.
PF motor
1. Check if the PF motor connector cable is connected to
CN7 on the Main board.
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. 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.
Pump unit
1. Check if the Compression spring 1.764 comes off in the
Change lever.
1. Replace the Printer mechanism with new one.
When turning on the power, the CR unit
collides to the Paper guide upper located
on the Lower housing.
Paper guide upper/
left
1. Check if the Paper guide upper/left comes off from the
Main frame.
1. Reassemble the Paper guide upper/left to the
Main frame.
LD roller
Paper return plate
Comp. spring 1.764
Change lever