Universal Robots UR5 Service Manual page 107

7. Troubleshooting
C36A Illegal bootloader
command
C37A Inbuffer parse error
C38A Online RAM test
failed
C38A1 Data-bus test failed
C38A2 Address-bus stuck-
high test failed
C38A3 Address-bus stuck-
low test failed
C38A4 Address-bus shorted
test failed
C38A5 Memory-cell test
failed
C39A Logic and Temporal
Monitoring Fault
C39A1 Max current
deviation failure
C39A2 Max joint-encoder
speed exceeded
C39A3 Max motor-encoder
speed exceeded
C39A4 Illegal state change
in joint detected
C39A5 A timing issue
occurred during
startup.
C39A6 5V regulator voltage
too low
C39A7 5V regulator voltage
too high
C39A100 Watchpoint fault:
ADC task timeout
Service Manual
Serial communication
problem with joint
Too fast state change in
joint detected
101
Check black 2-wire
connectors and wires on
joints
Check the log file for what
item is reporting this error.
Replace the reported item
a) Do a Complete rebooting
sequence.
b) If this happens more than
two times in a row, replace
joint
Same as C39A1
Same as C39A1
Same as C39A1
Same as C39A1
Same as C39A1
Same as C39A1
Same as C39A1
UR5