(c)
Make sure you hear the alarm bell in the control cabin.
(d)
Make sure the warning horn in the right main wheel well comes on and goes off continuously.
(e)
Make sure the fire warning light in the main wheel well flashes.
S 865-108
(3) Release the TEST switch on the P8-1 panel.
(a) Make sure there are no fire indications.
S 865-109
(4)
Move the two OVHT DET switches on the P8-1 panel to the loop B position.
S 865-110
(5)
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.
(b)
Make sure these lights on the P7 panel come on:
1) the two FIRE WARN lights
2) the two MASTER CAUTION lights
3) the OVHT/DET annunciator.
(c)
Make sure you hear the alarm bell in the control cabins.
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737-300/400/500MAINTENANCE MANUAL
(d)
Make sure the warning horn in the right main wheel well comes on and goes off continuously.
(e)
Make sure the fire warning light in the main wheel well flashes.
S 865-111
(6)
Release the TEST switch on the P8-1 panel.
S 865-112
(7)
Move the two OVHT DET switches, on the P8-1 panel, to the NORMAL position.
(a) Make sure there are no fire indications.
L. Do the test of the fault circuits in the fire warning system.
S 865-113
(1) Move 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
(c)
Make sure these lights on the M279 panel come on: 1) The four engine INOP and one APU INOP lights
S 865-114
(2) Release the TEST switch on the P8-1 panel.
(a)
Make sure these lights on the P8-1 panel are off: 1) The FAULT light 2) The APU DET INOP light
(b)
Make sure these lights on the P7 panel are off: 1) The two MASTER CAUTION lights 2) The OVHT/DET annunciator
(c)
Make sure these lights on the M279 panel are off: 1) The four engine INOP and one APU INOP lights
S 865-115
(3) Open the FIRE PROTECTION DETECTION ENG NO. 1 circuit breaker on the P6-2 panel.
(a) Make sure the ENG NO. 1 loop-A and loop-B INOP lights on the M279 module come on.
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737-300/400/500MAINTENANCE MANUAL
(b) Make sure the FAULT Light on the P8-1 panel comes on.
S 865-116
(4) Close the FIRE PROTECTION DETECTION ENG NO. 1 circuit breaker on the P6-2 panel.
(a)
Make sure the FAULT light goes off.
(b)
Make sure the ENG NO. 1 loop-A and loop-B INOP lights go off.
S 865-117
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