TASK 34-31-01-004-038
2. Receiver Removal
________________
A. General
(1)
There are three receivers in the E1 electronics equipment rack in the main equipment center. The left receiver is on the No. 2 shelf. The center receiver is on the No. 3 shelf. The right receiver is on the No. 4 shelf.
(2)
The removal procedures are the same for each receiver.
B. Reference
(1) 20-11-22/401, Rack-Mounted Electrical/Electronic Module
C. Access
(1) Location Zone 117 Electrical and Electronics Compartment, LH
D. Procedure
S 864-023
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7A6 NAV RADIO MMR L
2) 7B6 NAV RADIO MMR C
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34-31-01
ALL ú ú 15 Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
3) 7B17 NAV RADIO MMR R
S 024-024
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE ILS
_______ RECEIVER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE ILS RECEIVER.
(2)
Do this task to remove the applicable receiver from the E1 electronics equipment rack: Rack-Mounted Electrical/Electronic Module Removal (Ref 20-11-22/401).
S 034-025
(3)
Install dust caps on the electrical connectors.
TASK 34-31-01-404-036
3. Receiver Installation
______________________
A. General
(1)
There are three receivers in the E1 electronics equipment rack in the main equipment center. The left receiver is on the No. 2 shelf. The center receiver is on the No. 3 shelf. The right receiver is on the No. 4 shelf.
(2)
The installation procedures are the same for each receiver.
B. References
(1)
20-11-22/401, Rack-Mounted Electrical/Electronic Module
(2)
24-22-00/201, Manual Control
(3)
34-31-00/501, Instrument Landing System
(4)
34-58-00/501, Global Positioning System
(5)
IPC 34-31-01, Fig. 2
C. Access
(1) Location Zone 117 Electrical and Electronics Compartment, LH
D. Procedure
S 864-027
(1) Make sure these circuit breakers are open with DO-NOT-CLOSE tags attached:
(a) P7 Overhead Circuit Breaker Panel
1) 7A6 NAV RADIO MMR L
2) 7B6 NAV RADIO MMR C
3) 7B17 NAV RADIO MMR R
S 434-028
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE ILS
_______ RECEIVER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE ILS RECEIVER.
(2) Remove the dust caps from the electrical connectors.
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34-31-01
ALL ú ú 10 Page 402 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
(3) S 424-039Do this task to install the applicable receiver on the E1 electronics equipment rack: Rack-Mounted Electrical/Electronic Module Installation (Ref 20-11-22/401).
(4) S 864-030Remove the DO-NOT-CLOSE tags and close these circuit breakers: (a) P7 Overhead Circuit Breaker Panel 1) 7A6 NAV RADIO MMR L 2) 7B6 NAV RADIO MMR C 3) 7B17 NAV RADIO MMR R
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