Epson DFX-5000+ Service Manual page 195

Troubleshooting
Table 5-10. Cl17 MAIN Board Assembly Component Repair (continued)
Symptom
The carriage Carriage operation is
operates unstable (due to a
abnormally. lack of motor torque).
Paper The CPU is defective.
feeding is
abnormal.
5-28
Cause
Observe the feedback signal at pin
1 of IClO that detects the current
in the carriage motor.
Measure the voltage level at pin 3
of ICl 0. (The normal voltage is
approximately 4.7 VDC.)
Check the paper feed motor phase
drive signals at pins l-4 of ICl
Checkpoint
EPSON DFX-5000+ Service Manual
Solution
Replace
Replace
D52.
Replace