34-42-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
GROUND PROXIMITY WARNING MODULE - SERVICING (BULB REPLACEMENT)
______________________________________________________________
1. General
_______
A. This subject has one task. The task is for the replacement of the bulb. It is also necessary to do a test of the bulb operation.
TASK 34-42-21-963-014
2. Ground Proximity Warning Module Bulb Replacement
________________________________________________
A. Standard Tools and Equipment
(1) Lamp - 5 volts, 60ma - P/N MS24515-685
B. References
(1)
24-22-00/201, Manual Control
(2)
IPC 34-42-00 Fig. 1
C. Access
(1) Location Zone
101/102 Flight Compartment
D. Procedure
S 863-010
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P18-1 Electronic Load Circuit Breaker Panel 1) 18A7, GND PROX WARN
(b)
P42 5V Lighting Panel
1) 42, P3-P23-P10 LTG 28V AC SEC
S 963-015
CAUTION: DO NOT USE PLIERS OR OTHER TOOLS TO REMOVE THE CAP
_______ ASSEMBLIES. THIS CAN CAUSE DAMAGE TO THE SWITCH CAP.
(2) Replace the lamps as follows:
(a)
Hold the cap assembly tightly on the two sides and pull the assembly out of the switch.
(b)
Turn the cap assembly to get access to the lamps.
(c)
Remove lamps from the cap assembly.
(d)
Install the replacement lamps.
(e)
Turn the cap and put the cap assembly into the switch.
S 863-005
(3) Close these circuit breakers:
(a) P18-1 Electronic Load Circuit Breaker Panel 1) 18A7, GND PROX WARN
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(b) P42 5V Lighting Panel 1) 42, P3-P23-P10 LTG 28V AC SEC
(4) S 863-012Supply electrical power (AMM 24-22-00/201).
(5) S 743-008Set the IND LTS switch on the Pilots' Overhead Panel to the TST position. (a) Make sure the lamps come on.
(6) S 863-016Remove electrical power if it is not necessary (AMM 24-22-00/201).
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34-42-21
ALL ú ú 02 Page 302 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
GROUND PROXIMITY WARNING MODULE - REMOVAL/INSTALLATION
______________________________________________________
1. General_______
A. This subject has two tasks. One is for the removal and one is for the installation of the warning module. These tasks have steps for the removal of the warning module, the installation of the replacement warning module, and a test of the lights.
B. The ground proximity warning module (P3-7) is on the first officer's instrument panel, P3.
TASK 34-42-21-004-017
2. Ground Proximity Warning Module Removal_______________________________________
A. Access
(1) Location Zone
222 Control Cabin, RH
B. Procedure
S 864-002
(1) Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P42 5V Lighting Panel
1) 42, P3-P23-P10 LTG 28V AC SEC
(b)
P18-1 Electronic Load Circuit Breaker Panel 1) 18A7, GND PROX WARN
S 024-004
(2) Remove the warning module:
(a)
Loosen the fasteners on the module.
(b)
Pull the module from the instrument panel until you can get to the electrical connection.
(c)
Disconnect the electrical connector from the module.
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