S 865-020
 (15)
 Set the two OVHT DET switches on the P8-1 panel to the NORMAL position.

 S 865-021

 (16)
 Set and hold the TEST switch, on the P8-1 panel, to the FAULT/INOP position.

 (a)  
Make sure these lights on the P8-1 panel come on:
 1) the FAULT light
 2) the APU DET INOP light.

 (b)  
Make sure these lights on the P7 panel come on:
 1) the two MASTER CAUTION lights
 2) the OVHT/DET annunciator.

 S 865-022
 (17) Release the TEST switch on the P8-1 panel.
 (a)  
Make sure these lights on the P8-1 panel go off:
 1) the FAULT light
 2) the APU DET INOP light.

 (b)  
Make sure these lights on the P7 panel go off:
 1) the two MASTER CAUTION lights
 2) the OVHT/DET annunciator.

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737-300/400/500MAINTENANCE MANUAL
 S 865-198
 (18) Close these circuit breakers:
 (a)  P6 Load Control Center - Right 1) OVHT WHL WELL WING BDY
 S 865-023
 (19) Remove electrical power if it is no longer necessary (AMM 24-22-00/201).
 TASK 26-11-00-735-024
 3.  Do the System Test of the Engine Fire Detection System______________________________________________________
 A. Equipment
 (1)  
Multimeter - 0-1 megohm serviceable range

 (2)  
Test Box Assembly C26002-21

 B. References
 (1)  
AMM 20-22-01/601, Electrical Bonding

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 71-11-02/201, Fan Cowl Panels (Opening and Closing)

 (4)  
AMM 78-31-00/201, Thrust Reverser System

 (5)  
WDM 26-11-11

 (6)  
WDM 26-11-21

 (7)  
WDM 20-60-01

 C. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right
 205 Electronic Compartment
 217 Right Main Wheel Well
 502 LH Fan Cowl
 503 RH Fan Cowl
 602 LH Fan Cowl
 603 RH Fan Cowl

 D. Prepare to do the System Test
 S 865-025
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-026

 (2)  
Make sure these circuit breakers on the P6 panel are closed:

 (a)  
ANNUNCIATOR NO. 1

 (b)  
ANNUNCIATOR BAT

 (c)  
AIR/GND RELAY & LTS

 (d)  
INDICATOR MASTER DIM BUS BAT

 (e)  
INDICATOR MASTER DIM BUS NO. 1 DC

 (f)  
INDICATOR MASTER DIM BUS NO. 2 DC

 (g)  
INDICATOR SECT 1 thru 6

 (h)  
DIM & TEST

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 S 865-027
 (3)  Open these circuit breakers on the P6 panel:
 (a)  
MASTER WARN & CONTROL

 (b)  
FIRE PROTECTION DETECTION - ENG 1

 (c)  
FIRE PROTECTION DETECTION - ENG 2

 (d)  
APU

 (e)  
EXTINGUISHER BOTTLES RIGHT

 (f)  
EXTINGUISHER BOTTLES LEFT

 (g)  
EXTINGUISHER BOTTLE RIGHT

 (h)  
EXTINGUISHER BOTTLE LEFT

 (i)  
EXTINGUISHER BOTTLES APU

 (j)  
OVHT WHL WELL WING BDY

 S 865-029
 (4)  Push the left MASTER CAUTION light, or the right MASTER CAUTION light on the P7 panel.
 (a)  Make sure the two MASTER CAUTION lights and the OVHT/DET annunciators are off.
　
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