(i) Install the top panel on the rear of the power distribution panel.
G. Cross Bus Tie Relay Installation Test
SUBTASK 24-61-01-860-003
(1) Do this task: Supply External Power, TASK 24-22-00-860-813.
SUBTASK 24-61-01-710-002
(2) Do a check of the DC Bus Tie Relay as follows:
(a) Make sure the BAT switch on the P5-13 panel is set to the ON position.
(b) Make sure the BUS TRANS switch on the P5-4 panel is set to the AUTO position.
(c) Set the DC Meter Selector Switch on the P5-13 panel to the TR 1 position.
(d) Make sure the DC meter on the P5-13 panel shows this value:
1) DC VOLTS = 22-30
(e) Open this circuit breaker and install safety tag:
Power Distribution Panel Number 1, P91
Row Col Number Name
A 6 C00806 TRU 1
(f) Make sure the DC meter on the P5-13 panel shows these values:
1) DC VOLTS = 22-30
2) DC AMPS = 0
(g) Make sure the TR UNIT light on the P5-13 panel comes on.
(h) Set the BUS TRANS switch on the P5-4 panel to the OFF position.
(i) Make sure the DC meter on the P5-13 panel shows these values:
1) DC VOLTS = 0
2) DC AMPS = 0
(j) Set the BUS TRANS switch on the P5-4 panel to the AUTO position.
(k) Make sure the DC meter on the P5-13 panel shows these values:
1) DC VOLTS = 22-30
2) DC AMPS = 0
(l) Remove the safety tag and close this circuit breaker:
Power Distribution Panel Number 1, P91
Row Col Number Name
A 6 C00806 TRU 1
(m) Make sure the TR UNIT light on the P5-13 panel goes off.
H. Put the airplane back to its usual condition.
SUBTASK 24-61-01-410-001
(1) Install the forward bulkhead liner.
SUBTASK 24-61-01-860-004
(2) Do this task: Remove Electrical Power, TASK 24-22-00-860-812
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-61-01
Page 410
D633A101-ILF Feb 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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