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 TM 55-1905-220-14-9
4-48.1. ALARM SWITCHBOARD - MAINTENANCE INSTRUCTIONS (Continued).
LOCATION
ITEM
ACTION
REMARKS
REPAIR
NOTE
Refer to wiring diagram (Foldout 1) when performing all repairs.
2. Bell
a. Wiring
Disconnect.
b. Screws (1),
Remove.
(2), and
flatwashers
(3)
c.
Bell (4)
Remove and install
new bell.
d. Screws (1),
Install.
(2), and
flatwashers
(3)
e. Wiring
Reconnect.
3. Buzzer
a. Wiring
Disconnect.
b. Screws (5),
Remove.
(6), and
flatwashers
(7)
c.
Buzzer (8)
Remove and replace.
d. Screws (5),
Install.
(6), and
flatwashers
(7)
e. Wiring
Reconnect.
4-1240
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