C.  Prepare to do the Operational Test
 S 865-002
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 865-003

 (2)  
Make sure these circuit breakers are closed:

 (a)  P6 Load Control Center - Right
 1) MASTER WARN & CONTROL
 2) ENG NO. 1
 3) ENG NO. 2

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 4) AIRPLANES WITH KIDDE -98 FIRE DETECTOR UNITS;
 APU 5) ANNUNCIATOR NO. 1 6) ANNUNCIATOR BAT 7) AIR/GND RELAY & LTS 8) INDICATOR MASTER DIM BUS BAT 9) INDICATOR MASTER DIM BUS NO. 1 DC 10) INDICATOR MASTER DIM BUS NO. 2 DC 11) INDICATOR SECT 1 thru 6 12) DIM & TEST
 S 865-004
 (3)  Open these circuit breakers:
 (a)  P6 Load Control Center - Right
 1) OVHT WHL WELL WING BDY

 S 865-005
 (4)  Set the two OVHT DET switches on the P8-1 panel to the NORMAL position.
 D. Procedure
 S 865-006
 (1)  Open the FIRE PROTECTION DETECTION ENG 2 circuit breaker on the P6-2 panel.
 (a)  Make sure the FAULT light on the P8-1 panel comes on.
 S 865-007
 (2)  Push and hold the TEST switch on the P8-1 panel in the OVHT/FIRE position.
 (a)  
Make sure these lights on the P8-1 panel come on: 1) the ENG 1 OVERHEAT light 2) all of the lights in the engine-1 fire switch 3) all of the lights in the APU fire switch.

 (b)  
Make sure these lights on the P7 panel come on: 1) AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT;

 the two FIRE WARN lights
 2) the two MASTER CAUTION lights
 3) the OVHT/DET annunciator.

 (c)  
AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT; make sure that you hear the alarm bell in the control cabin.

 S 755-008
 (3)  Release the TEST switch on the P8-1 panel.
 (a)  Make sure these lights on the P8-1 panel go off: 1) the ENG 1 OVERHEAT light 2) all of the lights in the engine-1 fire switch
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 3) all of the lights in the APU fire switch.
 (b)  
Make sure these lights on the P7 panel go off: 1) AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT;

 the two FIRE WARN lights
 2) the two MASTER CAUTION lights
 3) the OVHT/DET annunciator.

 (c)  
AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT; make sure that you do not hear the alarm bell in the control cabin.

 S 865-009
 (4)  Close the FIRE PROTECTION DETECTION ENG 2 circuit breaker on the P6-2 panel.
 (a)  Make sure the FAULT light on the P8-1 panel goes off.
 S 865-010
 (5)  Open the FIRE PROTECTION DETECTION ENG 1 circuit breaker on the P6-2 panel.
 (a)  Make sure the FAULT light on the P8-1 panel comes on.
 S 865-011
 (6)  Set and hold the TEST switch on the P8-1 panel to the OVHT/FIRE position.
 (a)  
Make sure that these lights on the P8-1 panel come on: 1) the ENG 2 OVERHEAT light 2) all of the lights in the engine-2 fire switch 3) all of the lights in the APU fire switch.

 (b)  
Make sure these lights on the P7 panel come on: 1) AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT;

 the two FIRE WARN lights
 2) the two MASTER CAUTION lights
 3) the OVHT/DET annunciator.

 (c)  
AIRPLANES WITH OTHER THAN -98 FIRE DETECTION UNIT; make sure that you hear the alarm bell in the control cabin.

 S 865-012
 (7)  Release the TEST switch on the P8-1 panel.
　
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