E. Procedure
SUBTASK 24-21-53-420-002
(1) Do these steps to install the module [1]:
(a) Put the module [1] carefully into position in the P5 overhead panel.
(b) Tighten the quarter turn fasteners on the module [1].
(c) Remove the protective covers from the electrical connectors.
(d) Examine the electrical connectors for bent or broken pins, dirt and damage.
1) Clean or repair the electrical connectors if it is necessary.
(e) Connect the electrical connectors to the module [1].
(f) Push the P5 overhead panel up to the closed position and latch it.
F. Installation Test of the Electrical Meters, Battery and Galley Power Module
SUBTASK 24-21-53-710-001
(1) Do this task: Supply External Power, TASK 24-22-00-860-813.
(a) If the ELEC light on the P5-13 panel is on do the steps that follow:
NOTE: The P5-13 panel may have fault messages latched in from the previous shop
test. Do these steps to clear any fault messages.
1) Set the AC meter selector switch and the DC meter selector switch on the P5-13
panel to the TEST position.
2) Push and release the MAINT switch on the P5-13 panel to start the display test.
NOTE: The display test will exercise all of the segments of the alphanumeric
display to allow the operator to verify the functionality of the display. The
display test is automatically terminated after a complete test cycle.
3) After completion of the display test the fault messages, (if there are any), will be
displayed on the meter. The fault messages will be displayed one at a time. Press
the MAINT switch again to step to the next message.
4) After the last message has been displayed, the following message will be displayed:
a) HOLD BUTTON CLEAR FAULTS
5) To clear the fault messages, push and hold the MAINT switch for 6 ±0.2 seconds.
The following message will be displayed if the faults have been successfully
cleared:
a) FAULTS CLEARED
(b) Make sure the ELEC light on the P5-13 panel is off.
(c) Set the AC meter selector switch on the P5-13 panel to the GRD PWR position.
(d) Make sure the AC meter on the P5-13 panel shows these values:
1) AC VOLTS = 110-120
2) CPS FREQ = 390-410
(e) Set the DC Meter Selector Switch on the P5-13 panel to the TR 1 position.
(f) Make sure the DC meter on the P5-13 panel shows this value:
1) DC VOLTS = 22-30
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-21-53
Page 405
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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