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 TM 55-1925-273-10-2
0137 00
Table 1. Preventive Maintenance Checks and Services Including Lubrication (continued)
ITEM INTERVAL MAN-
ITEM TO BE
PROCEDURE
EQUIPMENT
NO.
HOUR
CHECKED OR
NOT READY/
SERVICED
AVAILABLE IF:
INTERCOM
SYSTEM
12
Before
0.3
Exterior
Visually inspect exterior for damage,
water accumulation, or dirt buildup.
Clean using a soft cloth.
13
Before
0.3
Hardware
Inspect mounting hardware for tightness.
Tighten as necessary.
Indicator Lamps
Mounting Hardware
REL
CALL
BUSY
Pushbuttons
PRESS
TO
RE-
LEASE
PRESS
TO
RE-
Control Switch
LEASE
DIMMER
VOLUME
Rotary Switch
OFF
HANDS
MIC OR
FREE
MAL
PRESS
HANDSET
Hands Free Switch
TO TALK
0137 00-6
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