(c)  
Make sure the ENG #1 fire light is on.

 (d)  
Make sure the BIT 1 light on the portable tester is on.

 (e)  
Release the FAULT/INOP--OVHT/FIRE light.

 (f)  
Make sure the ENG #1 fire light goes out.

 (g)  
Make sure the BIT 1 light on the portable tester is off.

 S 865-546
 (10) Open this circuit breaker:
 (a)  P6-2 Panel
 1) FIRE PROTECTION DETECTION ENG 1

 S 865-547
 (11) Close this circuit breaker:
 (a)  P6-2 Panel
 1) FIRE PROTECTION DETECTION ENG 2

 S 735-548
 (12) Do this test of the fire signals from engine No. 2:
 (a)  
Set the portable tester to SUBFRAME 0, WORD 54.

 (b)  
Set and hold the FAULT/INOP--OVHT/FIRE switch in the OVHT/FIRE position.

 (c)  
Make sure the ENG #2 fire light is on.

 (d)  
Make sure the BIT 2 light on the portable tester is on.

 (e)  
Release the FAULT/INOP--OVHT/FIRE switch.

 (f)  
Make sure the ENG #2 fire light is off.

 (g)  
Make sure the BIT 2 light on the portable tester is off.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. BEJ 113 ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 865-549
 (13) Close these circuit breakers:
 (a)  P6-2 Panel
 1) FIRE PROTECTION DETECTION APU
 2) FIRE PROTECTION DETECTION ENG 1
 3) OVHT WHL WELL WING BODY

 S 865-550
 (14) If you will do no more tests, then do this task:
 "Put the Airplane to its Usual Condition."

 TASK 31-24-01-735-556
 38. Fuel Cutoff Signals Test
________________________
 A. Access
 (1)  Location Zones
 101 Control Cabin - Left
 102 Control Cabin - Right

 B. Procedure
 S 865-557
 (1)
Make sure you did the Prepare For Input Parameter Test task.

 S 865-558

 (2)  
Open these circuit breakers:

 (a)  P6-2 Panel
 1) ENG 1 R IGN
 2) ENG 2 R IGN
 3) ENG 2 L IGN
 4) ENG 1 L IGN

 S 865-559
 (3)
Make sure pneumatic pressure is not available to the two engines.

 S 865-560

 (4)  
Make sure the fire handles are in the NORMAL position.

 S 735-561

 (5)  
Do this test of the fuel cutoff signals:

 (a)  
Set the portable tester to SUBFRAME 2, WORD 12.

 (b)  
Make sure the engine No. 1 start lever switch is in the CUTOFF position.

 (c)  
Make sure the BIT 2 light on the portable tester is on.

 (d)  
Put the engine No. 1 start lever switch in the START position.

 (e)  
Make sure the BIT 2 light on the portable tester is off.

 (f)  
Put the engine No. 1 start lever switch in the CUTOFF position.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. BEJ 113 ú

 31-24-01
 ú ú 20B Page 548 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (g)  
Make sure the engine No. 2 start lever switch is in the CUTOFF position.

 (h)  
Make sure the BIT 1 light on the portable tester is on.

 (i)  
Put the engine No. 2 start lever switch in the START position.

 (j)  
Make sure the BIT 1 light on the portable tester is off.

 (k)  
Put the engine No. 2 start lever switch in the CUTOFF position.

 S 865-562
 (6)  Close these circuit breakers:
 (a)  P6-2 Panel
 1) ENG 1 R IGN
 2) ENG 2 R IGN
 3) ENG 2 L IGN
 4) ENG 1 L IGN

 S 865-563
 (7)  If you will do no more tests, then do this task:
　
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