Epson STYLUS COLOR 480 Service Manual page 61

EPSON Stylus COLOR 480
Table 3-17. General Error indication on the STM3
General Error indication on the STM3
Step
Detail phenomenon
No.
1. Check if the Torsion
spring 0.22 comes off
on the both HP/IC
sensor lever.
HP/IC sensor lever
2. Check if the Torsion
spring 0.22 comes off
on the both PE sensor
When the printer is
lever.
turned on, the printer
1
continue the paper
eject sequence even if
the paper is not in the
paper path.
PE sensor lever
3. Check if the CN1
connector cable is
connected on the CN1
on the Main board or
sensor.
4. Check if the HP/PE
sensor work correctly
by using the tester.
Refer to Table 3-2
Troubleshooting
Check point Remedy
1. Set the Torsion spring
0.22 on the HP/IC sensor
lever.
Torsion spring
0.22
2. Set the Torsion spring
0.22 on the PE sensor
lever.
Tension spring
0.22
3. Connect the CN1
connector cable to the
CN1 on the Main board.
4. Replace the HP/PE/IC
sensor with new one.
5. If the problem is not
solved, replace the Main
board with new one.
Unit Level Troubleshooting
Table 3-18. General Error indication on the STM3
General Error indication on the STM3
Step
Detail phenomenon Check point
No.
1. Check if the CR
motor connector is
connected CN2 on the
Main board.
When the printer is 2. Check if the coil
turned on, the CR unit resistance of the CR
2
dose not move at all in motor is about 7.8ohm
the power on sequence. by using the tester.
Refer to Table 3-1.
1. Check if the PF motor
connector is connected
to the CN3.
When the printer is
2. Check if the PF motor
turned on, PF roller
3 coil resistance is about
dose not rotate at all in
7ohm by using tester
the power on sequence.
Revision B
Remedy
1. Connect the CR motor
connector to the CN2 on
the Main board.
2. Replace the CR motor
with new one.
3. If the problem is not
solved, replace the Main
board with new one.
1. Connect the PF motor
connector to the CN3 on
the Main board.
2. Replace the PF motor
with new one.
3. If the problem is not
solved, replace the Main
board with new one.
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