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MAINTENANCE MANUAL
(5)
AMM 34-61-00/501, Flight Management Computer System (FMCS)
(6)
AMM 45-10-00/201, Central Maintenance Computer System (CMCS)
D. Access
(1) Location Zones 221 Control Cabin, LH 222 Control Cabin, RH 223 FWD Upper Deck Passenger Cabin 125 Area Below Forward Cargo Container Compartment
E. Prepare for the ATC System Test
S 845-203
(1)
Follow the instruction in the TIC operator's manual and do all necessary calibration.
S 845-204
(2)
Insert the antenna coupler over the lower ATC antenna.
NOTE: Make sure the orientation of the antenna coupler setup is
____
correct.
S 845-205
(3)
Connect the antenna coupler connector to the test set antenna connector.
S 845-206
(4)
Supply electrical power (Ref 24-22-00/201).
S 845-234
(5)
Make sure these systems are serviceable:
(a)
Integrated Display System (AMM 31-61-00/501)
(b)
Air Data Computing System (AMM 34-12-00/501)
(c)
Flight Management Computer System (AMM 34-61-00/501)
(d)
Central Maintenance Computer System (AMM 45-10-00/201)
S 845-207
(6)
Make sure these circuit breakers are closed:
(a) P7 Overhead Circuit Breaker Panel
1) 7B10, NAV RADIO ATC L
2) 7B22, NAV RADIO ATC R
3) 7B23, NAV RADIO ATC ANTENNA SW
(7)
Do the ATC system operational test.
S 715-208
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747-400 MAINTENANCE MANUAL
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WARNING: YOU MUST CAREFULLY FOLLOW THE STEPS IN THE GIVEN TASK TO
_______ PREPARE THE SAFETY SENSITIVE SYSTEMS FOR THE AIR MODE. FAILURE TO FOLLOW THE STEPS CORRECTLY CAN CAUSE THE AUTOMATIC OPERATION OF THE AIRPLANE SYSTEMS. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(8)
Do the "Prepare Safety-Sensative Systems for Air Mode Simulation" task (AMM 32-09-02/201).
S 865-428
(9)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(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 865-278
(10) Push the STD switch on the captain's and first officer's EFIS control panel.
NOTE: This is the same as setting the baro correct to 29.92 inches
____
of mercury.
(a) Make sure the captain's PFD and first officer's PFD shows STD.
F. ATC System Test
S 865-282
CAUTION:_______DO NOT USE CODES 7500, 7600-7677 AND 7700-7777. THESE ARE CODES USED ONLY IN EMERGENCY SITUATIONS.
(1)
On the ATC control panel, set the code switches to a desired ATC ID code.
(2)
On the ATC control panel, set the ATC system on standby.
S 865-280
(3)
Push the INTERROGATE switch on the test set.
S 865-295
(a) Make sure the test set shows "no reply from xpdr".
S 865-288
(4) Set the transponder select switch on the ATC control panel to the left or No. 1 system.
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747-400 MAINTENANCE MANUAL
S 865-431
(5)
Set the mode switch on the ATC control panel to the XPNDR position.
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