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747-400
MAINTENANCE MANUAL
(AROUND ANTENNA BASE) AERODYNAMIC SEALANT BMS 5-95 (6 LOCATIONS)
INSTALLATION BUILDUP A-A
Marker Beacon Antenna Installation Figure 401
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747-400 MAINTENANCE MANUAL
VOR/MKR RECEIVER - REMOVAL/INSTALLATION
_______________________________________
1. General_______
A. This procedure has two tasks, one for the removal and one for the installation of a VOR/MKR receiver. After the installation of a VOR/MKR receiver, you must do an operational test.
TASK 34-32-02-004-001
2. VOR/MKR Receiver Removal________________________
A. General
(1) There are two VOR/MKR receivers installed on the electronic equipment rack E2 in the main equipment center. The left VOR/MKR receiver (B621) is on shelf No. 3. The right VOR/MKR receiver (B629) is on shelf No. 2.
B. References
(1) AMM 20-11-22/401, Rack-Mounted Electrical/Electronic Module
C. Access
(1) Location Zone 118 Electrical and Electronics Compartment, RH
D. Procedure
S 864-007
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7A9 NAV RADIO MKR VOR L
S 024-008
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE
_______ VOR/MKR RECEIVER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE VOR/MKR RECEIVER.
(2) Do this task to remove a VOR/MKR receiver from the electronics equipment rack E2: "Rack-Mounted Electrical/Electronic Module Removal" (AMM 20-11-22/401).
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S 034-009
(3) Install dust caps on the electrical connectors.
TASK 34-32-02-404-004
3. VOR/MKR Receiver Installation
_____________________________
A. General
(1) There are two VOR/MKR receivers installed on the electronic equipment rack E2 in the main equipment center. The left VOR/MKR receiver (B621) is on shelf No. 3. The right VOR/MKR receiver (B629) is on shelf No. 2.
B. References
(1)
AMM 20-11-22/401, Rack-Mounted Electrical/Electronic Module
(2)
AMM 24-22-00/201, Manual Control
(3)
IPC 34-51-01 Fig. 1
C. Access
(1) Location Zone 118 Electrical and Electronics Compartment, RH
D. Procedure
S 864-010
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P7 Overhead Circuit Breaker Panel
1) 7A9 NAV RADIO MKR VOR L
S 434-011
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE
_______ VOR/MKR RECEIVER. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE VOR/MKR RECEIVER.
(2)
Remove dust caps from the electrical connectors.
S 424-012
(3)
Do this task to install a VOR/MKR receiver in the electronics equipment rack E2: "Rack-Mounted Electrical/Electronic Module Installation" (AMM 20-11-22/401).
S 864-013
(4)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
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