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A
747-400 MAINTENANCE MANUAL
S 864-037
(10) Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P7 Overhead Circuit Breaker Panel
1) 7D22 ILS ANT SW L
2) 7D23 ILS ANT SW C
3) 7D24 ILS ANT SW R
S 714-038
(11) Test the glide slope track antenna:
(a) Do the Prepare for the System Test and the Glide Slope parts of the ILS System Test (Ref 34-31-00/501).
S 864-039
(12) If electricl power is not necessary, do this task to remove electrical power: Manual Control (AMM 24-22-00/201).
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747-400
MAINTENANCE MANUAL
GLIDE SLOPE ANTENNA MAIN EQUIPMENT CENTER SWITCH PANEL, P31 RACK E1
SEE A
STATION 400
BULKHEAD
FWD
STA
400
B119 CENTER GLIDE SLOPE
ANTENNA COAXIAL RELAY GLIDE SLOPE ANTENNA SWITCH PANEL, P31
B405 RIGHT GLIDE SLOPE ANTENNA COAXIAL RELAY SEE B P31
B404 LEFT GLIDE SLOPE ANTENNA COAXIAL RELAY
GLIDE SLOPE ANTENNA GLIDE SLOPE ANTENNA SWITCH PANEL, P31 COAXIAL RELAYS
A B
Glide Slope Antenna Coaxial Relay Installation
Figure 401
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747-400 MAINTENANCE MANUAL
VOR/LOC RF POWER DIVIDER - REMOVAL/INSTALLATION
_______________________________________________
1. General_______
A. This subject has two tasks. The first task is the removal of the VOR/LOC rf power divider. The second task is the installation of the VOR/LOC rf power divider. Parts of the ILS System Test must be done after the installation of the VOR/LOC rf power divider.
TASK 34-31-07-004-011
2. VOR/LOC RF Power Divider Removal________________________________
A. General
(1)
There are three VOR/LOC rf power dividers installed in the E1 electronics equipment rack in the main equipment center. They are installed on the left end of the No. 6 shelf. The equipment numbers are B8316 for the left, B8317 for the right, and B8318 for the right/center rf power dividers.
(2)
The removal procedures are the same for each VOR/LOC rf power divider.
B. Access
(1) Location Zone 117 Electrical and Electronics Compartment, LH
C. Procedure
S 024-012
(1) Remove the VOR/LOC rf power divider:
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