TM 5-3610-257-14
4-16.7. Replace ZERO Control.
MOS: 35E, Special Electronic Devices Repairer
TOOLS: Flat Tip Screwdriver
Hex Head Wrench Set
Combination Wrench Set
Soldering Iron
SUPPLIES:
Potentiometer (ZERO Control)
Solder
WARNING
Death or serious injury may occur from electrical shock unless power cord is unplugged before
servicing.
a.
Remove densitometer (paragraph 4-20.1).
b.
Remove chassis cover.
c.
If ZERO control is under light shield, remove four screws securing filter light shield to chassis; remove light
shield. If not under light shield, proceed to step d.
d.
Tag and unsolder wires from ZERO control.
e.
Remove knob.
f.
Remove nut securing ZERO control from chassis.
g.
Remove defective ZERO control.
h.
Install new ZERO control.
i.
Solder wires to new ZERO control and remove tags.
j.
Install knob.
k.
Install light shield (if removed).
l.
Install chassis cover.
m.
Install densitometer (paragraph 4-20.1).
4-30