TM 5-3610-285-14
WARNING
Death or serious injury may occur from electrical shock unless power cord is unplugged
before repairing equipment.
a. Unplug power cord.
b. Unplug reflection/transmission probe cable.
c. Remove four screws and chassis cover.
d. If ZERO control is under light shield, remove four screws securing filter light shield to chassis; remove light
shield.
e. Remove knob.
f. Tag and desolder wires from ZERO control.
g. Remove nut securing ZERO control to chassis.
h. Remove defective ZERO control.
i. Solder wires to new ZERO control.
j. Reinstall knob.
k. Reinstall light shield (if removed) and secure with screws.
l. Reinstall chassis cover and secure with screws.
m. Plug in reflection/transmission probe cable.
n. Plug in power cord.
7-45
