Epson STYLUS 3000 Service Manual page 140

Troubleshooting
Table 5-7. Component Repair of the C211 MAIN Board (continued))
Condition
CR motor does not rotate
normally.
Symptom : The printer feeds paper abnormally.
PF motor does not
operate normally.
5-12
Cause
Symptom : CR does not operate normally.
Sub gate array IC16 Check the waveform for the
is defective. signals HPASEA/B (Pin 7) output
from the IC19/20.
CPU is defective.
IC19 or IC20 is
Check the the
defective. for the signals
output from the IC19/20.
(See the waveform (9))
CR motor is Check if the resistance of the
defective. motor coil is as follows;
Sub gate array IC6 Check the waveform for one of
is defective. the following signals output from
the IC17:
CPU is defective.
IC17 is defective. Check the wavefoarms for one of
the following signals output from
the IC17:
(Refer to the waveform (10).)
PF motor is Check if the resistance of the
defective. motor coil is as follows;
Checkpoint
Waveform (9)
drive waveform

(Pin 10/15)
 !"#
5 7 % at 25°C per phase
(Refer to Table 5-1.)
PFA0/1 (Pin1/2)
PFB0/1 (Pin 23/24)
Waveform (10)
PFA0/1 (Pin 2/1)
PFB0/1 (Pin 23/24)
10 ± 10 % at 25 °C
(Refer to Table 5-1.)
Solution
Replace the MAIN
board or IC16.
Replace the MAIN
board.
Replace the IC19 or
IC20.
Replace the CR motor.
Replace the MAIN
board.
Replace the MAIN
board.
Replace the MAIN
board.
Replace the PF motor.
Rev. A