6.6.8 Exist same Sample No.
Monitor Timing: When barcode reading is completed
Monitor Method: Same sample No. exists in one rack.
CA-500’s Action: Warning
(1) Probable Cause
1. Same sample No. exists in one rack.
2. Barcode drive mechanism is obstructed.
3. Loosened pulley of motor
4. Failure of BCR (Bar Code Reader) motor assembly
5. Defective light shield
6. Failure of sensor
7. Flaws on shaft
8. Failure of bushing
9. Failure of wiring cord (wiring cord with spiral)
10. Failure of PCB No. 6362
11. Failure of PCB No. 4086
(2) Confirmation by the operator
1. Check the barcode label.
2. 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 (wiring cord for ID
barcode 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 (wiring cord for ID barcode reader), wiring cord (wiring cord with spiral), or PCB
No. 4086 is faulty.
6.6.9 Load New Sample
Monitor Timing: When the analysis is re-started after interrupted to load new sample
Monitor Method: Sample rack sensor is monitored.
CA-500’s Action: Warning
(1) Probable Cause
1. New rack is not loaded when the analysis is re-started after adding new order.
(2) Confirmation by the operator
1. Check sample rack.
2. Check sample table
(3) Confirmation by Service Engineer
1. Check the sample rack sensor.
CA-500 Series S/M 6-26 Revised December 2001 8
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