LSK 1500/1550 User Manual, March 2021
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CONFIDENTIAL
Cash Dispensing Unit (CDU) Error Codes and Diagnostics
Error Code
CDU Error Code Description and Diagnostics
C0000
Normal
C0011
CDU exit sensor (A) to cash tray blocked before dispensing
C0012
Reject gate timing sensor (E) blocked
1. Check the sensor RIGHT/LEFT for blockage.
2. Check to ensure the sensor is working properly.
3. Check cable from the sensor to MAIN B/D for damage or loose connector.
4. Measure sensor voltage:
Normal range of 50~250 mV at empty
Normal range of 2~5 V when blocked
5. Replace GATE sensor when the voltage is not in the normal range.
6. Replace Main B/D.
C0021
Double detection timing sensor (H) blocked
1. Check the sensor for blockage.
2. Check to ensure the sensor is working properly.
3. Check the cable from sensor to MAIN B/D for damage or loose connector.
4. Measure sensor voltage <transmitter normal range of 1~3V>.
Normal range of 50~250 mV at empty
Normal range of 2~5 V when blocked
5. Replace DBL sensor when the voltage is not in the normal range.
6. Replace Main B/D.
C0022
1st CST exit sensor (I) blocked
1. Check the sensors RIGHT/LEFT for blockage and check belt for interference.
2. Check to ensure the sensor is working properly.
3. Check cable from Inlet sensor to MAIN B/D for damage or loose connector.
4. Measure sensor voltage <transmitter normal range of 1~3V>.
Normal range of 50~250 mV at empty
Normal range of 2~5 V when blocked
5. Replace Inlet sensor when the voltage is not in the normal range.
6. Replace Main B/D.
C0028
CDU exit sensor (A) to cash tray blocked at dispensing
1. Check the sensor for blockage.
2. Check to ensure the sensor is working properly.
3. Check cable from Outlet sensor to MAIN B/D for damage or loose connector.
4. Measure sensor voltage <transmitter normal range of 1~3V>.
Normal range of 50~250 mV at empty
Normal range of 2~5 V when blocked
5. Replace Outlet sensor when the voltage is not in the normal range.
6. Replace Main B/D.
C0030
Main motor (F) failure to run
1. Check the belt for proper engagement.
2. Check cable for damage or loose connector.
3. Check encoder for blockage.
4. Check encoder slit for damage.
5. Measure sensor voltage <transmitter normal range of 1~3V>.
Normal range of 50~250 mV at empty <YELLOW CABLE>
Normal range of 2~5 V when blocked <YELLOW CABLE>
6. Replace encoder when the voltage is not in the normal range.
7. Replace Main B/D.
C0031
Main motor (C) failure to run