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 S521  DOORS 
SWITCH - SKIN TEMPERATURE, S1888  7  1 FWD CARGO COMPT 21-58-07 
SWITCH/LIGHT - HI FLOW, S2  1  1  FLT COMPT, P5, CABIN TEMP PNL,  * 
M7329
SWITCH/LIGHT - PACK RESET, S3 1  1  FLT COMPT, P5, CABIN TEMP PNL,  * 
M7329 

* SEE THE WDM EQUIPMENT LIST
Cooling - Component Index Figure 101 (Sheet 1)
E01086
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
COMPONENT  FIG. 102 SHT  QTY  ACCESS/AREA  REFERENCE AMM 
VALVE - BYPASS, V446  7  1  FWD CARGO COMPT, LEFT  21-58-04 
VALVE - COMPRESSOR BYPASS CHECK  5  3  191HL,191AL,192AR, AIR COND 21-51-06 
ACCESS DOORS 
VALVE - COOLING AIR CHECK 3  3  191NL,191FL,192FR, AIR COND  21-51-14 
ACCESS DOORS 
VALVE - FLOW CONTROL AND SHUTOFF, V93,V94,V95  4  3 191HL,191NL,192HR, AIR COND  21-51-01 
ACCESS DOORS 
VALVE - EXHAUST FAN CHECK  8  1  FWD CARGO COMPT, RIGHT  21-58-03 
VALVE - E6/E9, V449  7  1  FWD CARGO COMPT, LEFT  21-58-13 
VALVE - GROUND EXHAUST, V447  8  1  FWD CARGO COMPT  21-58-12 
VALVE - INBD EXHAUST, V445  8  1  FWD CARGO COMPT  21-58-04 
VALVE - INBD SUPPLY, V444  7  1  FWD CARGO COMPT, LEFT  21-58-04 
VALVE - PACK DUMP (SMACCS), V556,V557  4  2  191HL,191NL,192HR, AIR COND  21-51-02 
ACCESS DOORS 
VALVE - SMOKE/OVRD, V448 7  1  FWD CARGO COMPT, LEFT  21-58-06 
VALVE - SUPPLY FAN CHECK  7  1  FWD CARGO COMPT, LEFT  21-58-03 
VALVE - THREE-WAY, V555  7  1  FWD CARGO COMPT, LEFT  21-58-14 

Cooling - Component Index
Figure 101 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E01095
A

747-400 FAULT ISOLATION/MAINT MANUAL
PILOT'S OVERHEAD PANEL, P5
SEE B EQUIPMENT COOLING CARD, YMLA15
FORWARD ELECTRICAL
FORWARD ELECTRICAL SYSTEMS
SYSTEMS CARDFILE,
M7603 CARD FILE, M7603

SEE A
A
FAN FLT TEMPFWD MAIN AFT DECK AUTO AUTO DECK AUTO TEMP
ON
CABIN TEMPERATURE
CC
C MAN W MANW MANW
CONTROL MODULE, FWD LOWER AFT
M7329
ZONE RST TRIM AIR
AUTO LOBE AUTO TEMP ON
SYS
FAULTa
C MANW C MANW
EQUIP COOLING
EQUIPMENT
NORM
COOLING MODE
HI FLOW PACK RST AFT CARGO HT
STBY
OVRD
PACK RESET
SELECT SWITCH, S1
SWITCH/LIGHT, S3
ON
ON
SYS
TEMP
FAULTa
a
PACK HIGH FLOW
SWITCH/LIGHT, S2
1 PACKS 2 PACKS 3
NORM NORM NORM
OFF

A
A
A B
OFF
OFF
B
B PACK 3 SELECT
L ISLN
R ISLN
SWITCH, S10
PACK 1 SELECT
VALVE
VALVE
a
a
SWITCH, S8
w
WING
w WING TAI TAI APU
PACK 2 SELECT
BLEED AIR CONTROL SYS SYS

SYS SYS
SWITCH, S9
ON
FAULT a FAULT
w FAULT a FAULT a
a
MODULE, M7328
VALVE
1
2
a3
4
ON
ON
ON
ON
w
w
w
w
ENGINE
BLEED
OFF
OFF
OFF
OFF
a
a
a
a
PILOTS' OVERHEAD PANEL
B
Cooling - Component Location
Figure 102 (Sheet 1)

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