G. Put the Airplane Back to Its Usual Condition
S 866-021
(1)
Set the audio selector panels back to the usual configurations.
(2)
Turn off the MUSIC control at the P21 forward attendant panel.
(3)
Remove electrical power, if it is not necessary (AMM 24-22-00/201).
S 866-023
S 866-017
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757 MAINTENANCE MANUAL
PASSENGER ADDRESS AMPLIFIER - REMOVAL/INSTALLATION
__________________________________________________General
_______
A. This procedure has two tasks. The first task removes the passenger address (PA) amplifier. The second task installs the PA amplifier and does a test of the installation.
B. The passenger address amplifier, M177, is installed in the main equipment center on shelf 3 of rack E4 (E4-3).
TASK 23-31-01-004-001Passenger Address Amplifier Removal
___________________________________
A. References
(1)
06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
20-10-01/401, E/E Rack Mounted Components
B. Access
(1)
Location Zones
120 Main Equipment Center (RH side)
211 Control Cabin - Sect 41 (LH side)
(2)
Access Panel
119BL Main Equipment Center
C. Passenger Address Amplifier Removal (Fig. 401)
S 014-029
(1)
Open the access door, 119BL, for the passenger address amplifier (AMM 06-41-00/201).
S 864-002
(2)
Open this circuit-breaker on the overhead circuit-breaker panel, P11, and attach the DO-NOT-CLOSE tag:
(a) 11C22, PASS ADRS AMPL
S 024-005
(3) Remove the passenger address amplifier (AMM 20-10-01/401).
TASK 23-31-01-404-006Passenger Address Amplifier Installation
________________________________________
A. References
(1)
06-41-00/201, Fuselage (Major Zones 100 and 200) Access Doors and Panels
(2)
20-10-01/401, E/E Rack Mounted Components
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MAINTENANCE MANUAL
(3) 24-22-00/201, Electrical Power - Control
B. Access
(1)
Location Zones 120 Main Equipment Center (RH side) 211 Control Cabin - Sect 41 (LH side)
(2)
Access Panel
119BL Main Equipment Center
MAIN EQUIPMENT CENTER PA AMPLIFIER (COLLINS) PA AMPLIFIER (PED)
Passenger Address Amplifier Installation Figure 401
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757 MAINTENANCE MANUALPA Amplifier Installation (Fig. 401) S 864-030
(1) Make sure this circuit breaker on the overhead circuit breaker panel, P11, is open and has a DO-NOT-CLOSE tag attached: (a) 11C22, PASS ADRS AMPL
(2) S 424-008Install the passenger address amplifier (AMM 20-10-01/401).
(3) S 864-010Remove the DO-NOT-CLOSE tag and close this circuit-breaker on the P11 panel: (a) 11C22, PASS ADRS AMPL
AIRPLANES WITH PED PA AMPLIFIER; PA Amplifier Installation Test
S 864-021
(1)
Supply electrical power (AMM 24-22-00/201).
S 864-040
(2)
Set the function switch on the PA amplifier to AMP TEST.
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