Service manual

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2. Is the current leakage safety device normal?
1. Is the current leakage safety device activated?
A. Unit does not work at all (operation lamp does not light up).
Check the secondary side of the current leakage
safety device.
(1) Measure the voltage between Gray 2 and Blue
3 of the 3P relay connector.
Check the operation of the current leakage safety
device.
(1) When the ground-fault lamp of the current
leakage safety device lights, press the reset
button or disconnected power plug to cancel.
If the current leakage safety device cannot be
canceled, check for electric leakage around
power receptacle, etc.
<Caution>
Checking electric leakage can be dangerous.
Perform with caution.
(1) Troubleshooting and Repair.
3. Is the transformer normal?
Check the secondary side of the transformer.
(1) Measure the voltage between White 1 and Blue
2 of the 3P relay connector.
Normal
AC207 - 253V
Yes Continue to “3. Is the transformer...”.
No
Replace the current leakage safety
device or power cord.
Normal
AC90 - 110V
Yes Continue to “4. Blown Current Fuse”.
No
Replace the transformer, current
leakage safety device or power cord.
Maintenance