S 864-009
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6 Load Control Center - Right
1) LEVER LATCH AND PRESS WARN
2) AURAL WARN
(5)
Connect the vacuum source to the vent port of the switch.
S 714-011
(6)
Do this test for the switch:
S 484-010
(a) Operate the vacuum to approximately 5 psi (10 psia). 1) Make sure you hear the intermittent warning horn.
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737-300/400/500MAINTENANCE MANUAL
(b) Push the switch for the ALTITUDE HORN CUTOUT on the forward overhead panel (P5). 1) Make sure the warning horn stops.
S 714-012
(7) Do this task: "Cabin Altitude Warning Switch Test" (Ref 31-26-00/501).
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737-300/400/500MAINTENANCE MANUAL
AURAL WARNING MODULE ASSEMBLY - REMOVAL/INSTALLATION
____________________________________________________
1. General_______
A. This procedure has two tasks. The tasks are a removal and an installation of the aural warning module assembly (M315).
TASK 31-26-41-004-014
2. Aural Warning Module Assembly Removal_____________________________________
A. Access
(1) Location Zones
101/102 Control Cabin
B. Procedure
S 864-002
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Load Control Center - Right 1) MASTER WARNING AND CONTROL 2) AURAL WARN 3) AURAL MACH AND AIRSPEED WARNING
(b)
P18 Load Control Center - Left 1) AURAL MACH AND AIRSPEED WARNING
S 024-004
(2) Remove the module:
(a)
Disconnect the electrical plugs.
(b)
Remove the attachment fasteners.
(c)
Remove the module.
TASK 31-26-41-404-015
3. Aural Warning Module Assembly Installation__________________________________________
A. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 31-26-00/501, Aural Warning System
B. Access
(1) Location Zones
101/102 Control Cabin
C. Procedure
S 424-006
(1) Install the module:
(a)
Put the module on the Forward Section Control Stand.
(b)
Attach the fasteners.
(c)
Connect the electrical connector to the module.
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A 737-300/400/500MAINTENANCE MANUAL
FWD
AURAL WARNING MODULE
Aural Warning Module Installation
Figure 401
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F92551
A 737-300/400/500MAINTENANCE MANUAL
S 864-008
(2) Supply electrical power (AMM 24-22-00/201).
S 864-009
(3) Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P6 Load Control Center - Right 1) MASTER WARNING AND CONTROL 2) AURAL WARN 3) MACH WARN SYS - 2 (b) P18 Load Control Center - Left 1) MACH WARN SYS - 1
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