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TROUBLESHOOTING
TROUBLESHOOTING PROCEDURES
6. Home Position Error
Symptom:
This error is detected when the home position sensor cannot detect the first
carriage.
Possible Causes:
•
The scanner motor is damaged.
•
The harness between the scanner motor and the SDU is damaged.
•
The SDU is damaged.
•
The home position sensor is damaged.
•
The harness between the home position sensor and the MBU is
damaged.
•
The MBU is damaged.
Procedure:
Does the home position sensor work? Check it with sensor test mode. (See
page 4-2.)
Yes
No
Does 5 volts reach the sensor?
Yes
Replace the sensor.
Is the drive wire OK?
Yes
No
Replace it.
Does 24 volts reach the scanner motor?
Yes
No
Is the harness between the motor and the SDU damaged?
Yes
Replace the harness.
Replace the scanner motor.
No
Is the harness between the home position sensor
and the MBU OK?
Yes
No
Replace the harness.
Replace the MBU.
No
Replace the SDU.
6-12
October 9th, 1995
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