(4)
Do the engine fire detection operational test (Ref 26-11-00/501).
(5)
Do the APU fire detection operational test (AMM 26-15-00/501).
S 714-014
S 714-015
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
COMPARTMENT OVERHEAT CONTROL UNIT - REMOVAL/INSTALLATION
________________________________________________________
1. General_______
A. This procedure contains the removal and installation of the Compartment Overheat Control Unit (M237).
B. The Lever latches are used to move and hold the electronic modules mounted on the racks. This unit has a handle and trigger (Fig. 401). To install the module and hold it into position you engage the hook on the lever-latch handle with a fork type catch on the rack. Correct adjustment of the lever-latch fork is necessary to make sure correct connector connection occurs.
TASK 26-10-02-004-002
2. Remove the Fire Detection Electronics Rack Module (Fig. 401)_________________________________________________
A. Access
(1) Location Zones
5 Electronic Compartment
B. Remove the Compartment Overheat Control Unit
S 014-010
CAUTION:_______SOME E/E BOXES ARE STATIC SENSITIVE. DO NOT HANDLE THEM BEFORE READING THE PROCEDURE FOR HANDLING ELECTROSTATIC DISCHARGE SENSITIVE DEVICES (AMM 20-40-12/201). BOXES CONTAIN DEVICES THAT CAN BE DAMAGED BY STATIC DISCHARGE.
(1) Open these circuit breaker on the P6 panel:
(a)
OVHT WHL WELL WNG BDY
(b)
MASTER WARN AND CONT
S 864-012
CAUTION: IMPROPER ADJUSTMENT OF THE ASSEMBLIES ON THE EQUIPMENT SHELVES
_______
CAN CAUSE DAMAGE TO EQUIPMENT.
(2)
Push on the latch to let the levers move away from the handle.
S 034-004
(3)
Move the levers down to force the module away from the shelf-mounted connector.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
S 024-008
(4) Remove the module from the shelf.
NOTE: To prevent contamination or damage, cover all ports,
____ openings and electrical connectors of the unit or shelf with plastic caps or bags.
TASK 26-10-02-404-005
3. Install the Fire Detection Electronics Rack Module (Fig. 401)
__________________________________________________
A. Access
(1) Location Zones
5 Electronic Compartment
B. Install the Compartment Overheat Control Unit
S 414-011
CAUTION: ELECTRICAL PINS ON E/E BOX CONNECTOR AND TRAY CONNECTOR MUST
_______ NOT BE BENT OR DAMAGED. INSTALLATION OF E/E BOX WITH DAMAGED PINS COULD RESULT IN DAMAGE TO E/E BOX, TRAY ELECTRICAL CONNECTOR, OR SYSTEM COMPONENTS.
(1) Move the module into the shelf with the levers in the open position until the levers engage in the shelf-mounted fork.
NOTE: Remove any caps or bags from the unit or the shelf before
____
you install the unit.
S 414-013
CAUTION: IMPROPER ADJUSTMENT OF THE ASSEMBLIES ON THE EQUIPMENT SHELVES
_______
CAN CAUSE DAMAGE TO EQUIPMENT.
(2) Move the lever to its locked position.
(a) Make sure the connectors engage to the dimensions of detail B (Fig. 401).
S 864-009
(3)
If it is necessary, adjust the fork so that with the connector correctly connected and the lever open 0.50 to 0.60 inch from the locked position, the fork just puts pressure on the lever (AMM 20-10-07/201).
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