S 485-081

 (3)  
Connect the multimeter between the outer shell of the lower fan detector element and the airplane ground.

 (a)  Make sure the resistance is less than 1 ohm.
 S 085-082
 (4)  
Disconnect the multimeter from the airplane.

 S 485-083

 (5)  
Connect the multimeter between the outer shell of the core detector element and the airplane ground.

 (a)  Make sure the resistance is less than 1 ohm.
 S 085-084
 (6)  
Disconnect the multimeter from the airplane.

 S 485-085

 (7)  
Connect the multimeter between the outer shell of the strut detector element and the airplane ground.

 (a)  Make sure the resistance is less than 1 ohm.
 S 085-086
 (8)  Disconnect the multimeter from the airplane.
 I.  Do the test of the operation of the fire warning system.
 S 755-063
 (1)  Make sure these circuit breakers on the P6-2 panel are open:
 (a)  
FIRE PROTECTION DETECTION - ENG 1

 (b)  
FIRE PROTECTION DETECTION - APU

 S 755-123
 (2)  Close these circuit breakers on the P6-2 panel.
 (a)  
FIRE PROTECTION DETECTION - ENG 2

 (b)  
MASTER WARNING AND CONTROL

 S 865-137
 (3) Hold the TEST switch on the P8-1 panel to the OVHT/FIRE position.
 (a)  Make sure these lights on the P8-1 panel come on. 1) The ENG 2 OVERHEAT light. 2) All of the lights in the engine-2 fire switch.
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 ALL  ú ú 02A Page 515 ú Jul 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 (b)  
Make sure all these lights on the P7 panel come on. 1) AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT;

 the two FIRE WARN lights.
 2) The two MASTER CAUTION lights.
 3) The OVHT/DET annunciator.

 (c)  
AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT; make sure you hear the alarm bell in the control cabin.

 S 865-138
 (4)  Release the TEST switch on the P8-1 panel.
 (a)  Make sure there are no fire indications.
 S 865-139
 (5)  
Close the FIRE PROTECTION DETECTION - ENG 1 circuit breaker on the P6-2 panel.

 S 865-140

 (6)  
Open the FIRE PROTECTION DETECTION - ENG 2 circuit breaker on the P6-2 panel.

 S 865-141

 (7)  
Hold the TEST switch on the P8-1 panel to the OVHT/FIRE position.

 (a)  
Make sure these lights on the P8-1 panel come on.
 1) The ENG 1 OVERHEAT light.
 2) All of the lights in the engine-1 fire switch.

 (b)  
Make sure all these lights on the P7 panel come on. 1) AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT;

 the two FIRE WARN lights.
 2) The two MASTER CAUTION lights.
 3) The OVHT/DET annunciator.

 (c)  
AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT; make sure you hear the alarm bell in the contro cabin.

 S 865-142
 (8)  Release the TEST switch on the P8-1 panel.
 (a)  Make sure there are no fire indications.
 S 865-143
 (9)  Close these circuit breakers on the P6-2 panel:
 (a)  
FIRE PROTECTION DETECTION - ENG 2

 (b)  
FIRE PROTECTION DETECTION - APU

 S 865-144
 (10) Hold the TEST switch on the P8-1 panel to the OVHT/FIRE position.
 (a)  Make sure these lights on the P8-1 panel come on:
 1) the ENG 1 OVERHEAT light
 2) the ENG 2 OVERHEAT light
 3) all of the lights in the engine-1 fire switch
 4) all of the lights in the engine-2 fire switch
 5) all of the lights in the APU fire switch.

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 26-11-00
　
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