Localizer Antenna Installation
Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
NAVIGATION UNIT - REMOVAL/INSTALLATION
______________________________________
1. General
_______
A. This subject has two tasks. The first task is the removal of the navigation unit. The second task is the installation of the navigation unit and a test of the navigation unit.
TASK 34-31-41-004-033
2. Navigation Unit Removal
_______________________
A. General
(1) The navigation units are installed in the electronics equipment rack. The No. 1 navigation unit (M154) and the No. 2 navigation unit (M155) are on shelf 4 of the E3 rack.
B. References
(1) AMM 20-10-07/201, E/E Rack-Mounted Components
C. Access
(1)
Location Zone
205 Electronic Compartment
(2)
Access Panels
1201L Electronic Equipment Access Door
D. Procedure
S 864-062
(1) For the No. 1 navigation unit, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P18 Load Control Center - Left
1) VOR/LOC-1
2) GS-1
3) INSTR XFMR-1
S 864-063
(2) For the No. 2 navigation unit, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Load Control Center - Right
1) VOR/LOC-2
2) GS-2
3) INSTR XFMR-2
S 024-036
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE
_______ NAVIGATION UNIT. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE NAVIGATION UNIT.
(3) Do this task to remove the applicable navigation unit: Remove the Rack-Mounted E/E Box (Ref 20-10-07/201).
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A 737-300/400/500MAINTENANCE MANUAL
S 034-038
(4) Install dust caps on the electrical connectors.
TASK 34-31-41-404-039
3. Navigation Unit Installation
____________________________
A. General
(1) The navigation units are installed in the electronics equipment rack. The No. 1 navigation unit (M154) and the No. 2 navigation unit (M155) are on shelf 4 of the E3 rack.
B. References
(1)
AMM 20-10-07/201, E/E Rack-Mounted Components
(2)
AMM 23-51-00/501, Flight Interphone System
(3)
AMM 24-22-00/201, Manual Control
C. Access
(1)
Location Zone
205 Electronic Compartment
(2)
Access Panels
1201L Electronic Equipment Access Door
D. Procedure
S 864-065
(1) For the No. 1 navigation unit, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P18 Load Control Center - Left
1) VOR/LOC-1
2) GS-1
3) INSTR XFMR-1
S 864-066
(2) For the No. 2 navigation unit, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Load Control Center - Right
1) VOR/LOC-2
2) GS-2
3) INSTR XFMR-2
S 434-043
CAUTION: DO NOT TOUCH THE CONNECTOR PINS OR OTHER CONDUCTORS ON THE
_______ NAVIGATION UNIT. IF YOU TOUCH THESE CONDUCTORS, ELECTROSTATIC DISCHARGE FROM YOUR BODY CAN CAUSE DAMAGE TO THE NAVIGATION UNIT.
(3) Remove the dust caps from the electrical connectors.
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本文链接地址：737-300 400 500 AMM 飞机维护手册 导航 NAVIGATION 3(20)
