B13 -BLANK B14 - SCU FAN POWER B15 -BLANK B16 -BLANK B17 -BLANK B18 -BLANK 
C1 - BLANK C2 - BLANK C3 - BLANK C4 - OVERHEAT C5 - PACK CONT VALVES RIGHT C6 - PACK CONT VALVES LEFT C8 - BLANK C10 - BLANK C11 - BLANK C12 - SUPPLY FAN CONTROL NORMAL C13 - SUPPLY FAN CONTROL ALTN C14 - EXHAUST FAN CONTROL NORMAL C15 - EXHAUST FAN CONTROL ALTN C16 - BLANK C17 - BLANK C18 - BLANK 
D1 - OVER BOARD XHAUST VALVE CONT D2 - OVER BOARD XHAUST VALVE RECONFIG CONT D3 - BLANK D4 - BANK D5 - BLANK D6 - BLANK D7 - MIX VALVE POS IND D8 - TEMP IND D9 - BLANK 
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved 
SOUTHWEST AIRLINES. 
737-700 MAINTENANCE TRAINING MANUAL
91-03-18-P6-4 Rev 1 09/10/1998 
CIRCUIT BREAKER PANELS - P6-4  
D10 - BLANK  F6 - PRESSURE CONTROL MANUAL  
D11 - GND SERV DC 1  F7 - PRESSURE CONTRL IND  
D12 - BLANK  F8 - GEN DISC 1  
D13 - XFR BUS 115V AC IND  F9 - -GEN DISC 2  
D14 - 28V DC XFR BUS 2 SECT 2  F10 - GEN CONT UNIT 1  
D15 - STBY BUS 28V AC DISTR  F11 -GEN CONT UNIT 2  
D16 - STBY BUS 115V AC IND  F12 - APU GEN CONT UNIT  
D17 - BLANK  F13 - BUS PWR CONT UNIT  
D18 - AC STBY BUS PWR  F14 - BAT  
F15 - BLANK  
E1 - RECIRC FAN CONT  F16 - DC BUS INDICATION BUS 1  
E2 - BLANK  F17 - BLANK  
E3 - BLANK  F18 -DC BUS INDICATION BUS 2  
E4 - CABIN AIR  
E5 - BLANK  
E6 - BLANK  
E7 - GASPER FAN  
E8 - BLANK  
E9 - ENTRY LIGHTS DIM  
E10 - BLANK  
E11 - TR3 XFR RELAY CONT  
E12 - GND SERV DC HOT BAT  
E13 - GND SERV CONT  
E14 - BLANK  
E15 - HOT BATTERY  
E16 - BLANK  
E17 - STBY  
F1 - PRESSURIZATION CONTROL LCD LTG  
F2 - BLANK  
F3 - PRESSURIZATION CONTROL AUTO 1  
F4 - BLANK  
F5 - PRESSURIZATION CONTROL AUTO 2  
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January 2005 
91-03
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved 
SOUTHWEST AIRLINES. 
737-700 MAINTENANCE TRAINING MANUAL
91-03-18-P6-4 Rev 1 09/10/1998
P6-4 AIR CONDITIONING & ELECTRICAL 
CIRCUIT BREAKER PANELS - P6-4
January 2005 
91-03
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved
91-03-18-P6-5 Rev 1 09/10/1998 
SOUTHWEST AIRLINES. 
737-700 MAINTENANCE TRAINING MANUAL
STANDBY POWER CONTOL UNIT (SPCU) CIRCUIT BREAKERS BY PANEL POSITION 
A1 - BAT BUS 3 A2 - INVERTER VOLTS A4 - DUAL BAT RCCB RENMOTE A5 - INVERTER REMOTE 
B1 - SPCU NORMAL B2 - SPCU STANDBY B3 - HOT BAT BUS B4 - SW HOT BAT BUS B5 - BAT/STBY SW POS IND 
C1 -STBY BUS SECT 1 C2 -STBY BUS SECT 2 C3 -TR3 DC IND C4 - BAT BUS SECT 1 C5 - BAT BUS SECT 2 
January 2005 
91-03
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SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved 
SOUTHWEST AIRLINES. 
737-700 MAINTENANCE TRAINING MANUAL
91-03-18-P6-5 Rev 1 09/10/1998 
BAT BUS INVERTER RCCB INVERTER 
SECT 3 VOLT REMOTE REMOTE
A
SPCU SPCU HOT SW HOT BAT/STBY
NORMAL STBY BAT BUS BAT BUS SW POS IND
B
STBY BUS STBY BUS TR3 BAT BUS BAT BUS SECT 1 SECT 2 DC IND SECT 1 SECT 2
C
28VDC
SPCU
STANDBY POWER CONTROL UNIT (SPCU) 
January 2005 
91-03
SOUTHWEST AIRLINES PROPRIETARY(c) All rights reserved 
 
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