24-31-00
 ALL  ú ú 01 Page 503 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-021
 (9)  Remove the DO-NOT-CLOSE tag and close this circuit breaker:
 (a)  P6-5 Panel
 1) C789, BAT BUS CONT MANUAL

 S 865-111
 (10) Turn the dc meter switch to the BAT BUS position.
 (a)  Make sure that the dc voltmeter shows 0 volts.
 S 865-112
 (11) Push the switch S2 to the INDICATE position.
 (a)  Make sure that the BATT light on the M238 is off.
 S 865-023
 (12)
 Set the STANDBY POWER switch to the BAT position.

 S 715-024

 (13)
 Make sure that the dc voltmeter shows 20 to 28 volts.

 S 865-027

 (14)
 Set the STANDBY POWER switch to the OFF position.

 S 865-029

 (15)
 Set the BAT switch to the OFF position.

 S 865-030

 (16)
 Make sure that these circuit breakers are closed:

 (a)  P6-4 Panel
 1) C4, CONTROL GEN NO. 1
 2) C5, CONTROL GEN NO. 2
 3) C6, CONTROL GEN APU
 4) C464, NO. 1 TRANS CONT
 5) C465, NO. 2 TRANS CONT
 6) C806, TR UNIT NO. 1

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 24-31-00
 ALL  ú ú 01 Page 504 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 7) C807, TR UNIT NO. 2
 8) C808, TR UNIT NO. 3

 (b)  
P6-5 Panel
 1) C1075, EXT PWR CONT

 (c)  
P6-11 Panel
 1) C819, TRANSFER BUS NO. 1 NORMAL

 (d)  
P6-12 Panel
 1) C811, BUS PROT PNL EXT PWR
 2) C812, GROUND SERVICE EXT POWER
 3) C817, NO. 2 GEN BUS MAIN DISTRIBUTION
 4) C821, TRANSFER BUS NO. 2 NORMAL

 S 865-126
 (17) Remove DO-NOT-CLOSE tags and close these circuit breakers:
 (a)  
P6-5 Panel
 1) C20, BAT BUS
 2) C25, DC BUS INDICATION TRU 3
 3) C790, GEN PWR CONT

 (b)  
P18-5 Panel
 1) C169, SWITCHED HOT BAT BUS

 S 865-032
 (18) Supply External Power as follows:
 (a)  
Connect 115V AC, 400 Hz, 3 phase power supply to external power receptacle on P19 panel.

 (b)  
Make sure that these lights come on.
 1) EXTERNAL POWER CONN - P19 Panel
 2) NOT IN USE - P19 Panel
 3) GRD POWER AVAILABLE - P5-4.

 S 865-036
 (19) Push the switch S2 to the INDICATE position.
 (a)  Make sure that the EXT PWR TR light on the M238 comes on.
 S 865-037
 (20) Turn the dc meter switch to the BAT position.
 (a)  Make sure the voltmeter shows 20 to 28 volts.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 24-31-00
 ALL  ú ú 01 Page 505 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-038
 (21) Turn the dc meter switch to the BAT BUS position.
 (a)  Make sure the voltmeter shows 0 volts.
 S 865-039
 (22)
 Turn the dc meter switch to the TR 3 position.

 S 865-028

 (23)
 Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6-5 Panel
 1) C145, BAT BUS CONT AUTO
 2) C167, BAT TRANS CONT

 (b)  
Make sure the voltmeter shows 0 volt.

 S 865-040
 (24)
 Set the BAT switch to the ON position.

 S 865-041

 (25)
 Push the switch S2 to the INDICATE position.

 (a)  Make sure that the BATT light and the EXT PWR TR light on the M238 come on.
 S 865-043
 (26) Turn the dc meter switch to the BAT BUS position.
　
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