S 865-176
(3)
Set and hold the TEST switch on the P8-1 panel in the OVHT/FIRE position.
(a) Make sure these indications occur:
1) These lights on the P8-1 panel come on: a) ENG 1 OVERHEAT b) ENG 2 OVERHEAT c) fire switch handle for engine 1 d) the fire switch handle for engine 2 e) the fire switch handle for the APU f) WHEEL WELL
2) These lights on the P7 panel come on: a) FIRE WARN(2) b) MASTER CAUTION(2) c) OVHT/DET annunciator
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737-300/400/500MAINTENANCE MANUAL
3) You hear the alarm in the control cabin.
4) You hear the APU warning horn in the main wheel well.
5) The fire warning light for the APU in the main wheel well
flashes.
S 865-023
(4) Set the LIGHTS switch on the P2-1 panel to the DIM position.
(a) Makes sure these lights dim:
1) ENG 1 OVERHEAT
2) ENG 2 OVERHEAT
3) the fire switch handle for engine 1
4) the fire switch handlefor engine 2
5) the fire switch handle for the APU
6) FIRE WARN(2)
7) MASTER CAUTION(2)
8) OVHT/DET annunciator
9) WHEEL WELL
S 865-026
(5) Set the LIGHTS switch on the P2-1 panel to the BRT position.
(a) Make sure these lights go back to the usual bright condition: 1) ENG 1 OVERHEAT 2) ENG 2 OVERHEAT 3) the fire switch handle for engine 1 4) the fire switch handle for engine 2 5) the fire switch handlefor the APU 6) FIRE WARN (2) 7) MASTER CAUTION (2) 8) OVHT/DET annunciator 9) WHEEL WELL
S 865-028
(6) Momentarily push the bell cutout switch on the P8-1 panel.
(a)
Make sure you do not hear the alarm bell.
(b)
Make sure the APU warning horn stops in approximately 3 seconds.
(c)
Make sure the two FIRE WARN lights go off.
(d)
Make sure the APU fire warning light in the main wheel well comes on continuously.
S 865-033
(7) Release the TEST switch on the P8-1 panel.
(a) Make sure all the lights on the P8-1 go off.
S 865-034
(8) Set the TEST switch on the P8-1 panel to the FAULT/INOP position.
(a) Make sure these lights come on: 1) FAULT and APU DET INOP lights on the P8-1 panel. 2) MASTER CAUTION and OVHT/DET lights on the P7 panel. 3) four engine and one APU INOP light on the M279 module.
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S 865-036
(9) Release the TEST switch on the P8-1 panel.
(a) Make sure these lights go off: 1) FAULT and APU DET INOP on the P8-1 panel. 2) MASTER CAUTION and OVHT/DET lights on the P7 panel. 3) four engine and one APU INOP lights on the M279 module.
S 865-038
(10) Open the FIRE PROTECTION DETECTION ENG NO. 1 circuit breaker on the P6-2 panel.
(a) Make sure these lights come on: 1) FAULT light on the P8-1 panel. 2) The loop A and loop B INOP lights for ENG NO. 1 on the M279
module.
S 865-040
(11) Close the FIRE PROTECTION DETECTION ENG NO 1 circuit breaker.
(a) Make sure these lights go off: 1) FAULT light on the P8-1 panel. 2) the loop A and loop B INOP lights for ENG NO. 1 on the M279
module.
S 865-042
(12) Open the FIRE PROTECTION DETECTION ENG NO 2 circuit breaker.
(a) Make sure these lights come on: 1) FAULT light on the P8-1 panel. 2) The loop A and loop B INOP lights for ENG NO. 2 on the M279
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