(j)
DIM & TEST

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 26-21-00
 ALL  ú ú 01 Page 501 ú Nov 15/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 D. Do a Test of the Engine Squib Circuits
 S 755-007
 (1)  
Make sure all the lights on the P8-1 panel are off.

 S 865-008

 (2)  
Set and hold the EXT TEST switch on the P8-1 Engine and APU Fire Control Panel, to 1.

 S 755-009

 (3)  
Makes sure only these lights on the P8-1 panel come on:

 (a)  
R (green)

 (b)  
L (green)

 (c)  
APU (green)

 S 865-172
 (4)  
Release the EXT TEST switch.

 S 755-171

 (5)  
Make sure all of the lights on the P8-1 panel go off.

 S 865-010

 (6)  
Set and hold the EXT TEST switch on the P8-1 panel at 2.

 S 755-011

 (7)  
Make sure only these lights on the P8-1 panel come on:

 (a)  
R (green)

 (b)  
L (green)

 (c)  
APU (green)

 S 865-012
 (8)  
Release the EXT TEST switch.

 S 755-013

 (9)  
Make sure all of the lights on the P8-1 panel go off.

 E. Do a Test of the Pressure Switch Circuits.
 S 865-014
 (1)  
Install a jumper across pins 1 and 2 of connector D586.

 (a)  Make sure L BOTTLE DISCHARGED light (amber) comes on.

 (2)  
Remove the jumper from pins 1 and 2 of connector D586.

 S 865-016

 (3)  
Install a jumper across pins 1 and 2 of connector D588.

 (a)  Make sure the R BOTTLE DISCHARGED light (amber) comes on.

 (4)  
Remove the jumper from pins 1 and 2 of connector D588.

 S 865-015
 S 865-017
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-21-00
 ALL  ú ú 01 Page 502 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 F. Put the Airplane in its usual condition.
 S 865-018
 (1)  
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 865-019

 (2)  
Connect the connector D586 to the left (forward) fire extinguisher bottle pressure switch and D588 to the right (aft) fire extinguisher bottle pressure switch.

 TASK 26-21-00-735-020
 3.  Engine Fire Extinguishing - System Test_______________________________________
 A. General
 (1)  This test procedure examines the two engine fire switch circuits between the P8 panel and each squib connector.
 B. Equipment
 (1)  
F80229-15 Test Equipment, Fire Extinguishing System

 (2)  
Multimeter 0-1000v dc |1%, 0-750v ac, 0-2 amps, 0-2 megohm (commercially available)

 C. References
 (1)  
AMM 24-22-00/201, Power - Control

 (2)  
AMM 20-40-12/201, Electrostatic Sensitive Discharge Devices

 D. Access
 (1)  Location Zone
 101, 102 Control Cabin

 E. Prepare for the Test
 S 865-165
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-021

 (2)  
Open these circuit breakers on the P6-2 panel and attach DO-NOT-CLOSE tags:

 (a)  
EXTINGUISHER BOTTLES RIGHT

 (b)  
EXTINGUISHER BOTTLES LEFT

 (c)  
EXTINGUISHER BOTTLE RIGHT

 (d)  
EXTINGUISHER BOTTLE LEFT

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