a. Power OFF.
b. Unplug power cord.
c. Remove rear cover.
d. Tag and disconnect wires from autotransformer (1).
e. Remove autotransformer by removing screws (2) and Iockwashers (3).
f. Refer to FO-1. Connect a 220 V, 50/60 Hz power source to terminals 1 and 5.
Perform this test only if the machine is wired for 220 V.
This test cannot be performed unless a 220 V power source
is available. Refer to FO-1.
If the voltage source is greater than 220 V, connect power
source to terminals 1 and 6.
g. Using a multimeter, read voltages between terminals 1 and 2, 1 and 3, 1 and 4,
and 1 and 5. Voltage at terminal 2 shall be 110 V, terminal 3 shall be 120 V, terminal 4
shall be 125 V, and terminal 5 shall be 220 V.
h. Remove power source and multimeter. If the autotransformer is defective, it shall be