
JCM Part No. 960-000097R_Rev. 3
© 2010, JCM American, Corporation
A - 8
Appendix A
Universal Bill Acceptor (UBA-1x-SS & x4-SS-SU)
Troubleshooting
No. 4 Anti-Pullback Mechanism Test
The test listed in Table A-7 detects the
Anti-Pullback mechanism operational
condition.
When the Green and Red LEDs are out, it
indicates the Anti-Pullback mechanism is
working properly.
The Green LED will Flash as the Anti-
Pullback Mechanism passes the Home
Position.
If there are any problems with the center-
ing mechanism, the Red LED will blink 9
times.
Table A-7
Anti-pullback Mechanism Test Error Conditions
Anti-Pullback
Mechanism
Condition
Red LED
Status
Green LED
Status
Causes and Conditions
Anti-Pullback
Unit Error
9 Flashes
OFF
An Anti-Pullback Home Sensor Board and/or a Lower Sensor
Board failure may have occurred. Check all harnesses and
connectors. Exchange the Anti-Pullback Home Sensor Board
and/or a Lower Sensor Board with a known good board. Refer
to Section 4 regarding Circuit Board Removal.
DIP Switch Block Settings
If diagnostic LED status is different from
the Table A-7 listed states, contact JCM
Technical Support.
Table A-8
Centering Mechanism Test Error Conditions
Centering
Mechanism
Condition
Red LED
Status
Green LED
Status
Causes and Conditions
Centering
Mechanism
Error
14 Flashes
OFF
Centering Mechanism Home Sensor Board and/or CPU
Board failure may have occurred. Check all harnesses and
connectors. Exchange the Centering mechanism Home
Sensor Board with a known good board. Refer to Section 4
regarding Circuit Board Removal.
No. 5 Centering Mechanism Test
The test listed in Table A-8 detects the
Centering Mechanism operational condi-
tion.
When the Centering Mechanism is in the
Home Position, the Green LED will be
steady ON.
When the Green and Red LEDs are out, it
indicates the Centering Mechanism is
working properly.
If there are any problems with the Center-
ing Mechanism Sensor Board, the Red
LED will blink 14 times.
DIP Switch Block Settings
If diagnostic LED status is different from
the Table A-8 listed states, contact JCM
Technical Support.