6.6.4 Barcode Scanner Driver Error
Monitor Timing: When sensing barcode home position
Monitor Method: Photo interrupter is shaded by the light shield to drive mechanism.
CA-500’s Action: Warning is displayed and no analysis is performed.
(1) Probable Cause
1. Barcode drive mechanism is obstructed.
2. Loosened pulley of motor
3. Failure of BCR motor assembly
4. Defective light shield
5. Failure of sensor
6. Flaws on shaft
7. Failure of bushing
8. Failure of wiring cord (wiring cord with spiral)
9. Failure of PCB No. 6362
10. Failure of PCB No. 4086
(2) Confirmation by the operator
1. Remove any foreign matters of the barcode drive mechanism.
(3) Confirmation by Service Engineer
1. Remove any foreign matters on the barcode drive mechanism.
2. If the motor runs while barcode does not move, retighten the pulley.
3. Check whether the light shield for the home position sensor is damaged or not.
4. Short-circuit the pin 19 and pin 17 of the relay connector on the rail. If this allows monitoring the
detection of home position, the sensor inside the sample rack drawer or wiring cord (for ID reader) is
faulty.
5. Short-circuit the pin 13 and pin 11 of CN111 on PCB No. 6362. If this allows monitoring, the wiring
cord (wiring cord with spiral) is faulty; otherwise, PCB No. 6362 is faulty.
6. Check whether the drive mechanism shaft is free from flaws.
7. Check whether the slide of shaft bushing is smooth or not.
8. If the motor does not operate or unstable even when the shaft is free from problems, any of ID motor
assembly, wiring cord (for ID reader), wiring cord (wiring cord with spiral), or PCB No. 4086 is faulty.
6.6.5 Barcode Scanner Error
Monitor Timing: When turning on power supply and changing the preset
Monitor Method: CPU communicate with Bar Code Scanner
CA-500’s Action: Warning
(1) Probable Cause
1. Failure of barcode scanner
2. Failure of wiring cord (for ID reader)
3. Failure of wiring cord (wiring cord with spiral)
4. Failure of PCB No. 6362
(2) Confirmation by the operator
None
(3) Confirmation by Service Engineer
Replace and confirm. Otherwise, confirm connections and identify failed locations by a voltmeter.
CA-500 Series S/M 6-23 Revised December 2001 8
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