D. Location Zones
Zone Area
212 Flight Compartment - Right
E. Access Panels
Number Name/Location
117A Electronic Equipment Access Door
F. SPCU Installation
SUBTASK 24-34-11-910-002
CAUTION
DO NOT TOUCH THE CONTROL UNIT BEFORE YOU DO THE PROCEDURE
FOR DEVICES THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE.
ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE CONTROL
UNIT.
(1) Before you touch the SPCU [1], do this task: ESDS Handling for Metal Encased Unit
Installation, TASK 20-40-12-400-802.
SUBTASK 24-34-11-420-001
(2) To install the SPCU [1] on the P6 panel, do these steps:
(a) Remove the protective covers from the electrical connector [3].
(b) Install the electrical connector [3] to the back of the SPCU [1].
(c) Tighten the captive screws [2] at the front of the SPCU [1].
SUBTASK 24-34-11-860-006
(3) Remove the safety tag and close this circuit breaker:
Battery Shield, J9
Row Col Number Name
A 5 C01340 BATTERY BUS
ILF 493-500, 560-564, 567-569, 581, 583, 585, 588-590, 592-599, 601-603, 606, 607, 610-615, 620,
625-627, 671, 672, 691-699, 833-835, 838, 841, 842, 851, 852, 857, 858, 947, 948, 968-973, 980-999
SUBTASK 24-34-11-410-001
(4) Install the access cover on top of the J39 shield.
ILF ALL
G. SPCU Installation Test
SUBTASK 24-34-11-860-003
(1) Do this task: Supply External Power, TASK 24-22-00-860-813.
SUBTASK 24-34-11-710-002
(2) Do a test of the SPCU, as follows:
(a) Make sure the STANDBY POWER switch on the P5-5 panel is in the AUTO position.
(b) Make sure the ELEC light on the P5-13 panel is OFF.
1) To clear ELEC light messages, do this task: FIM 24-31 TASK 801.
(c) Make sure the STANDBY PWR OFF light on the P5-5 panel is off.
(d) Set both the AC meter selector switch and the DC meter selector switch on the P5-13
panel to the STBY PWR position.
(e) Make sure the AC meter shows these values:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-34-11
Page 405
D633A101-ILF Jun 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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