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747-400 MAINTENANCE MANUAL
H. Put the Airplane Back to Its Usual Condition
S 865-154
(1) Remove the DO-NOT-CLOSE tags and close these circuit breakers.
(a) P7 Overhead Circuit Breaker Panel: 1) 7F22, LANDING GEAR DSP & CONT PRI 2) 7F23, LANDING GEAR DSP & CONT ALTN 3) AIRPLANES WITH THE "GND SAFETY RELAY" CIRCUIT BREAKER
INSTALLED AT PANEL GRID LOCATION 7H08; 7H08, GND SAFETY RELAY
S 865-109
(2) Remove the electrical power if it is not necessary
(AMM 24-22-00/201).
TASK 34-45-00-715-072
5. TCAS Interface Test___________________
A. General
(1) This Interface test is a check of the interface between TCAS and other systems that interface with TCAS. The interface check on the ATC and GPWS are satisfied in the TCAS system test.
B. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 31-51-00/501, Modularized Avionics Warning Electronics Assembly (MAWEA)
(3)
AMM 31-61-00/501, Integrated Display System (IDS)
(4)
AMM 32-09-02/201, Air/Ground Relay System
(5)
AMM 34-53-00/501, Air Traffic Control (ATC)
(6)
AMM 34-61-00/501, Flight Management Comnputer System (FMCS)
(7)
AMM 45-10-00/201, Central Maintenance Computer System (CMCS)
C. Prepare for the Interface Test
S 215-153
(1) Make sure these systems are serviceable:
(a)
Air Data Computing System (ADCS)
(b)
Central Maintenance Computer System (CMCS)
(c)
Inertial Reference System (IRS)
(d)
Integrated Display System (IDS)
(e)
Radio Altimeter System
S 215-326
(2) Make sure these circuit breakers are closed:
(a) P7 Overhead Circuit Breaker Panel: 1) 7A5, TCAS 2) 7F22, LANDING GEAR DSP & CONT PRI
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400 MAINTENANCE MANUAL
3) 7F23, LANDING GEAR DSP & CONT ALTN
4) AIRPLANES WITH THE "GND SAFETY RELAY" CIRCUIT BREAKER INSTALLED AT PANEL GRID LOCATION 7H08; 7H08, GND SAFETY RELAY
S 865-250
(3)
Set the transponder select switch on the control unit to the L or 1. position.
S 865-251
(4)
Set the mode switch on the control unit to the TA/RA position.
S 865-252
(5)
Set the mode switch on the control unit to the RA/TA position.
S 865-253
(6)
Set the altitude reporting switch is on the ON position.
S 865-254
(7)
Push the TFC switch on both EFIS control panels to display TCAS information.
D. MAWEA Audio Interface Test
S 865-098
(1) Open this circuit breaker:
(a) P7, Overhead Circuit Breaker Panel:
1) 7A03, AURAL WARN SPKR L
S 745-063
(2) Set the mode switch on the control unit to the TEST position.
(a) Make sure you heard "TCAS SYSTEM TEST OK" from the F/O's Aural Warning Speaker only.
S 865-333
(3) Close this circuit breaker:
(a) P7, Overhead Circuit Breaker Panel:
1) 7A03, AURAL WARN SPKR L
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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747-400 MAINTENANCE MANUAL
S 865-065
(4) Open this circuit breaker:
(a) P7, Overhead Circuit Breaker Panel:
1) 7A04, AURAL WARN SPKR R
S 745-102
(5) Set the mode switch on the control unit to the TEST position.
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