JOG EXCITE: Service & Maintenance Manual - rev. 1.1
Page 6.15
6.5.3. ERROR UU
This error indicates low voltage problems on the AT driver supply line.
Is the supply voltage at the
input to the AT driver correct?
Does the machine resume
correct operation af ter being
switched of f f or 1 minute?
YES
Probable low line voltage.
The machine is OK
Replace the AT driver
board
NO
UU
1
YES
NO
Correct the cause of the
excessively low line voltage
This error can be generated by even transient glitches in the mains supply due to
overloading or other factors. Therefore it can be useful to check, in the inverter error
log, the value of mains voltage recorded at the time when the error occurred.
Follow the procedure step by step to correctly diagnose the problem. Take particular care with the
checks highlighted by circled numbers, which are described in detail below:
(1) Place the tester probes across terminals of the connector J1 of the AT driver board. The
measured voltage should be 220 VAC.
To Next Page
Loading...
