(b)  
Make sure the elapsed time indicator on the test box operates.

 (c)  
Make sure the elapsed time indicator stops after 27 - 33 minutes.

 (d)  
Make sure the power lamps stay on.

 S 866-040
 (7)  
Push the ARMED AFT switch on the fire control module to the OFF position.

 S 866-166

 (8)  
Make sure the BOTTLE DISCHARGE light on the G26001 squib test box is on.

 S 976-168

 (9)  
Write the voltage shown on the multimeter connected to the G26001 test box (V1).

 S 966-169

 (10)
 Set the toggle switch on the G26001 squib test box to the ON position.

 S 976-170

 (11)
 Write the voltage shown on the multimeter connected to the G26001 test box (V2).

 S 736-171

 (12)
 Make sure the voltage V2 is not less than the value in the table above corresponding to the voltage V1 measured.

 S 866-215

 (13)
 Open these circuit breakers on P6 main power distribution panel and attach DO-NOT-CLOSE tags :

 (a)  6H6, FIRE EXTINGUISHER LOWER CARGO
 S 766-216
 (14) Disconnect the electrical connector, DM6742C, of bottle D from the G26001 test box.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL

 S 766-217
 (15)
 Connect the electrical connector, DM7908C, of bottle C to the G26001 test box.

 S 766-218

 (16)
 If the A26002 is used, do the following:

 (a)  
Disconnect the electrical connector, DM7908C, of bottle C from the A26002 test box.

 (b)  
Connect the electrical connector, DM6742C, of bottle D to the connector J1 on the A26002 test box.

 (c)  
Turn the POWER switch on the A26002 test box to the ON position.

 (d)  
Push and release the TEST RELAY RESET switch on the test box.

 (e)  
Push and release the timer reset switch on the A26002 test box.

 S 866-219
 (17) Close these circuit breakers on P6 main power distribution panel and remove DO-NOT-CLOSE tags :
 (a)  6H6, FIRE EXTINGUISHER LOWER CARGO
 S 866-224
 (18)
 Push the FWD ARMED switch on the fire control module.

 S 866-220

 (19)
 Push and release the DISCH switch on the fire control module, M7326, to start the operation of the time delay.

 S 716-222

 (20)
 If the A26002 test tool is not used, make sure it takes 27 - 33 minutes for the voltage on the multimeter to reach 18 volts DC.

 S 716-223

 (21)
 If the A26002 tool is used, make sure these indications occur:

 (a)  
The power lamp on the test box for the time delay is on.

 (b)  
The elapsed time indicator operates.

 (c)  
The elapsed time indicator stops after 27 - 33 minutes.

 (d)  
Make sure the power lamps stay on.

 S 866-225
 (22)
 Push the FWD ARMED switch on the fire control module to the OFF position.

 S 866-226

 (23)
 Make sure the BOTTLE DISCHARGE light on the G26001 squib test box is on.

 S 976-227

 (24)
 Write the voltage shown on the multimeter (V1) connected to the G26001 test box.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 26-23-05
 ALL  ú ú 01 Page 610 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 866-228
 (25)
 Set the toggle switch on the G26001 squib test box to the ON position.

 S 976-229

 (26)
 Write the voltage shown on the multimeter (V2) connected to the G26001 test box.
　
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