(1)  
Rigging Pin ND-3, 0.250 | 0.005 inch (6.35 | 0.127 mm) diameter by

 2.00 inches (50.8 mm) long.
 (2)  
Voltage Power Supply Probe - 0 to 65 volts DC range

 (3)
Pitot Static Leak Test - 0 to 12 inches of water rangeStandard Tools and Equipment

 (1)  
Stop Watch

 (2)
VoltmeterReferences

 (1)  
AMM 24-22-00/201, Manual Control

 (2)
AMM 34-11-00/201, Pitot-Static SystemAccess

 (1)  
Location Zone 801 Nose Cargo Door

Prepare For Test
 S 485-080
 (1)  
Supply electrical power (AMM 24-22-00/201).

 (2)  
Install the safety barrier across the door opening.

 S 865-081

 (3)  
Make sure these circuit breakers are closed:

 (a)  
On the Auxilary External 2 Power Center-Right panel P715: 1) NOSE CARGO DOOR

 S 495-174
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747-400 MAINTENANCE MANUAL
 (b)  
On the Power Distribution Center-Right panel P415: 1) 415F16, NOSE CARGO DOOR CONTROL

 (c)  
On the Nose Cargo Door Power panel H122: 1) DOOR LIFT 2) PULL UP CAM 3) LATCHES 1-4R 4) LATCHES 1-4L 5) LATCHES 5-8R 6) LATCHES 5-8L

 S 865-082
 (4)  
Make sure the door is fully closed and latched.

 G.
Dual Control Switches Test (Fig. 508)

 NOTE: The test is to make sure that holding one of the two control
____ switches in the closed or open position will not operate the door.
 S 865-083
 (1)  
Simultaneously hold the control switches in the open position for 30 seconds and release the DOOR CONTROL switch.

 S 215-084

 (2)  
Make sure the door stops.

 S 215-085

 (3)  
Release the SYSTEM POWER switch and make sure the door remains in position.

 S 215-086

 (4)  
Hold the DOOR CONTROL switch in the OPEN and CLOSE positions and make sure the door remains in position.

 S 865-087

 (5)  
Simultaneously hold the control switches to fully close the door.

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747-400 MAINTENANCE MANUAL
Pressure Switch and Isolation Relay Test (Fig. 507) S 725-225
 (1) Do this task: Pressure Switch and Isolation Relay TestLamp Test (Fig. 508)
 S 865-110
 (1)  Make sure the door is fully closed and latched.
 (2)  S 215-111On the door control and lights panel, Push the LAMP TEST switch and look to see these indication lights come on: (a) White POWER ON (b) Green LATCHES CLOSED (c) Green DOOR UP (d) Green LOCK_OUT ENGAGED.
 (3)  S 215-112Release the LAMP TEST switch and look to see this indication: (a) Green LATCHES CLOSED light remains on.
 (4)  S 215-113On the latch actuator test panel, Push the LAMP TEST switch and look to see these indication lights come on: (a) Green LATCH OPEN (b) Green LATCH CLOSED
 (5)  S 865-114Release the lamp test switch.
 (6)  S 865-115Push and hold the SYSTEM POWER switch to the OFF/LOCK TEST position and look to see these indications: (a) Green LATCHES CLOSED light goes off (b) Green LOCK-OUT ENGAGE light come on.

Latch System Test (Fig.503) S 865-117
 (1) Make sure the door is fully closed and latched.
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747-400 MAINTENANCE MANUAL
　
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