Epson Stylus PHOTO 2000P Service Manual page 70

EPSON Stylus PHOTO 2000P
Table 3-13. PF Motor does not Work
Step Checkpoint Action
1 Getting ready Using an oscilloscope, check the outputwaveform at
for checking CN13 (PF motor connector) on the main board. For
waveforms. checking, press the Load/Eject button to drive the PF
motor.
NOTE: Be sure to disconnect the PF motor cable.
NOTE: Ground one of the probes to the frame. The
connector itself has no ground line since the
PF motor is a bi-polar motor.
2 Checking the Drive the PF motor and check that the waveform
waveform to shown below is output from each pin of CN13.
solve the
problem.
• If the waveform appears as shown, replace the PF
motor.
• If not, replace the main control board or the PF
motor driver IC (IC19).
TROUBLESHOOTING
20V 20µ
Table 3-14. Pump/ASF Motor does not Work
Step Checkpoint
1 Getting ready
for checking
waveforms.
2 Checking the
waveform to
solve the
problem.
Overview
Action
Using an oscilloscope, check the outputwaveform at
CN7 (Pump/ASF motor connector) on the main
board. For checking, press the Load/Eject button to
drive the Pump/ASF motor.
NOTE: Be sure to disconnect the Pump/ASF
motor cable.
NOTE: Ground one of the probes to the frame.
The connector itself has no ground line
since the PF motor is a bi-polar motor.
Drive the Pump/ASF
20 20
motor and check that
the waveform shown at
right is output from
each pin of CN7.
• If the waveform
appears as shown,
replace the Pump/
ASF motor.
• If not, replace the
main control board or
20 20
the Pump/ASF motor
driver IC (IC12).
Revision A
µ
µ
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