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33-11-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
inoperative Map light dim Lights will not inoperative or reading light Flight kit light inoperative White dome light faulty transformer Burned out bulb, Shorted variable potentiometer transformer or light assembly potentiometer on faulty switch or or faulty switch Burned out bulb, Burned out bulb former as necessary former. Replace trans-voltage through trans-remains off, check for bulb was faulty. If light on circuit. If light OK, Relamp map light and turn light intensity. If lights check for variation in control back and forth and Rotate variable transformer transformer is faulty do not dim, variable faulty to illuminate, assembly is brightness. If light fails If other lights on circuit OK, dome light is faulty. circuit are operative. If Observe other lights on the faulty off, switch is probably Observe light is maximum Relamp light. former Replace trans-potentiometer transformer or assembly Replace switch Replace variable replace light Relamp light, Relamp dome light.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
AFDS FLOODLIGHT - REMOVAL/INSTALLATION
______________________________________
1. General
_______
A. This procedure contains two tasks:
(1)
The removal of the AFDS (Automatic Flight Director System) floodlight (referred to as the floodlight).
(2)
The installation of the AFDS floodlight.
TASK 33-11-71-004-001
2. AFDS Floodlight Removal (Fig. 401)
_______________________
A. General
(1) The AFDS floodlight is installed above the AFDS MCP (Mode Control Panel) in the pilot's lightshield.
B. Standard Tools and Equipment
(1) String, ten foot length
C. Access
(1) Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
D. Procedure
S 864-030
(1) Prepare for the Removal:
(a) Open this circuit breaker and attach a DO-NOT-CLOSE tag:
1) P6 Load Control Center - Right a) AFDS FLOOD LT
S 024-026
(2) Remove the floodlight:
(a) Loosen the screws on the AFDS MCP.
NOTE: It is not necessary to remove the MCP to replace the
____
floodlight.
(b)
Find the floodlight wires below the left side of the lightshield.
(c)
Disconnect the connector.
(d)
Attach a string to the floodlight wires.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
SECTION A-A
AFDS Floodlight Installation
Figure 401
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