TM 5-3610-257-14
3-20.
MAINTENANCE PROCEDURES.
a.
This section contains instructions covering direct/general support maintenance functions for the light integrating
exposure control instrument. Personnel required are listed only if the task requires more than one.
b.
After completing each maintenance procedure, perform operational check to be sure that equipment is properly
functioning.
INDEX
PROCEDURE
PARAGRAPH
Replace Internal Lamp ....................................................................................................................... 3-20.1
Check/Replace 2D21 and/or OB2 Tube(s) ........................................................................................ 3-20.2
Replace Plug-In Relay (Rear Section................................................................................................. 3-20.3
Replace Plug-In Relay(s) (Front Section)........................................................................................... 3-20.4
Replace Cancel Relay ........................................................................................................................ 3-20.5
Replace Power Cord .......................................................................................................................... 3-20.6
Replace Multicolor Phototube Bulb(s) ................................................................................................ 3-20.7
Replace Light Integrating Exposure Control Instrument..................................................................... 3-20.8
3-20.1
. Replace Internal Lamp.
MOS:
35E, Special Electronic Devices Repairer
TOOLS:
Flat Tip Screwdriver
SUPPLIES:
Bulb
WARNING
•
Death or serious injury may occur from electrical shock unless power cord is unplugged before
servicing.
•
If internal lamp has recently failed, it may be hot enough to cause severe burns. Allow lamp to cool
before attempting to change.
a.
Unplug power cord and remove exposure control instrument from mounting bracket.
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