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JCM Part No. 960-000097R_Rev. 3
© 2010, JCM American, Corporation
A - 1 2
Appendix A
Universal Bill Acceptor (UBA-1x-SS & x4-SS-SU)
Troubleshooting
LED Diagnostics Codes
Malfunction LED Error Codes
Table A-13 lists the possible Malfunction LED Error Codes that can exist when a fault condition occurs.
Table A-13
Malfunction LED Error Codes
LED Status
Error
Causes and Solutions
Red LED
Green LED
1 Flash
ON
Boot ROM error
Change the CPU Board. Refer to Section 4 regarding
Circuit Board Removal.
2 Flashes
ON
1. Incorrect external
ROM contents or
empty program
2. No program in the
external Flash
ROM
Change the CPU Board. Refer to Section 4 regarding
Circuit Board Removal.
3 Flashes
ON
Internal RAM error Change the CPU Board. Refer to Section 4 regarding
Circuit Board Removal.
4 Flashes
ON
External RAM error
5 Flashes
ON
Missing Boot
EPROM
In UBA-14/24 Units.
1 Flash
OFF
Cash Box Full
Empty the Cash Box and re-install.
2 Flashes
OFF
Stacker Pusher
Mechanism fault
(Transport Jam
Type 1)
Stacker motor may be corrupted. Change the motor if
defective. A Stacker Encoder Board failure may have
also occurred. Check all harnesses and connectors.
Exchange the Stacker Encoder Board and/or CPU
Board if required with a known good board. Refer to
Section 4 regarding Disassembly Instructions and
Circuit Board Removal.
3 Flashes
OFF
Transport Jam
Type 2
An Exit Sensor Board failure may have occurred.
Check all harnesses and connectors. Exchange the
Exit Sensor Board and/or CPU Board if required with a
known good board. Refer to Section 4 regarding Circuit
Board Removal.
4 Flashes
OFF
Stacker Encoder
signal fault or an
Acceptor Jam
A Stacker Encoder Sensor failure may have occurred.
Check all lenses for dirt or scratches. To clean the
lenses and sensors, refer to Section 2 regarding
Preventive Maintenance.Check all harnesses and
connectors. A Lower Sensor Board failure may have
occurred. Exchange the Lower Sensor Board if
required with a known good board. Refer to Section 4
regarding Circuit Board Removal.
5 Flashes
OFF
Transport Motor
speed error
The Transport Motor Speed Encoder Sensor does not
detect motor rotation or requires sensor adjustment.
Check all harnesses and connectors. A Motor or CPU
Board failure may have occurred. Exchange the Motor
and/or CPU Board with a known good motor or board.
Refer to Section 4 regarding Disassembly Instructions
and Circuit Board Removal.
6 Flashes
OFF
Transport Motor
failure
7 Flashes
OFF
Sensor Failure
Replace either the Upper or Lower Sensor Board.
8 Flashes
OFF
Communications
Failure
A comunications failure between the Upper Sensor
Board and the CPU Board. Replace either the Upper
Sensor Board and/or the CPU Board. Check that all
cables are properly connected.