### MP-124 Z-axis servo amplifier fault

LED on the servo amplifier PC board on the servo control unit (SCU) chassis indicates one of the following faults:

1. Excess current,

2. Servo amp overheated,

3. Equipment improperly grounded,

4. Sudden surge in current, or

5. Voltage too high or too low.

What you should do

1. To clear the error, click Clear error in the XYZ Display window. To clear it using an RCU-II, press and hold down the Servo Power Off button and then press the Joy button twice.

2. Allow the servos to cool before you proceed.

3. If the error reoccurs, call your Giddings & Lewis service representative.