TM 5-3610-285-14
g. Mark position of drive wheel on switch shaft, remove drive wheel.
h. Remove nut securing CHANNEL control switch to chassis.
i. Remove defective CHANNEL control switch from chassis.
j. Tag and desolder wires-from CHANNEL control switch.
k. Solder wires to new channel control switch.
l. Install new CHANNEL control switch.
m. Install drive wheel on new switch shaft. Aline with mark made in step g
n. Reinstall photomultiplier board assembly.
o. Install ribbon cable connector.
p. Reinstall switch knob.
q. Reinstall light shield.
r. Reinstall chassis cover and secure with screws.
s. Plug in reflection/transmission probe cable.
t. Plug in power cord.
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