(c)
Disconnect the electrical connectors.
(d)
Remove the MCP.
S 032-004
(3) Install the caps on the electrical connectors for protection.
TASK 22-11-02-402-005
3. Mode Control Panel Installation_______________________________
A. References
(1)
22-10-00/501, Autopilot/Flight Director System
(2)
24-22-00/201, Manual Control
(3)
IPC 22-11-02, Fig. 1
B. Access
(1) Location Zones
221 Control Cabin, LH
222 Control Cabin, RH
C. Procedure
S 862-006
(1) Make sure that these circuit breakers are open and the DO-NOT-CLOSE tags are attached:
(a)
P6 Main Power Distribution Panel 1) 6E21, FLT DK LIGHTS PANEL GLARESHIELD 2) 6F19, FLT DK LIGHT PILOT MISC IND 1 3) 6F20, FLT DK LIGHT PILOT MISC IND 2 4) 6L1, FLT DK LIGHT STBY INST
(b)
P7 Overhead Circuit Breaker Panel
1) 7D7, FLT CONT CMPTR SERVO L
2) 7D12, FLT CONT CMPTR SERVO C
3) 7D14, FLT CONT CMPTR SERVO R
4) 7E9, MCP L
5) 7E18, MCP R
S 432-007
(2) Remove the caps for protection from the electrical connectors on the rear of the MCP.
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A
747-400 MAINTENANCE MANUAL
S 422-008
CAUTION: DO NOT TOUCH THE MCP BEFORE YOU CONNECT THE GROUND STRAP
_______ BETWEEN YOUR WRIST AND THE ELECTROSTATIC GROUND JACK. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE MCP.
(3) Do the steps that follow to install the mode control panel:
(a)
Remove the caps from the electrical connectors on the rear of the MCP.
(b)
Make sure that you remove the cover from the air inlet on the MCP. Make sure that you clean the air outlet at the mounting rails.
CAUTION:_______CAREFULLY PUSH THE MCP INTO THE MOUNTING RAILS. TOO MUCH FORCE CAN CAUSE DAMAGE TO THE ELECTRICAL CABLES.
(c)
Push the MCP into the mounting rails until the electrical cables can connect to the rear of the MCP.
(d)
Connect the electrical connectors.
(e)
Push the MCP into position.
(f)
Tighten the four captive-screws at the bottom of the glare shield.
S 862-009
(4)
Supply the electrical power (Ref 24-22-00/201).
S 862-010
(5)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P6 Main Power Distribution Panel
1) 6E21, FLT DK LIGHTS PANEL GLARESHIELD
2) 6F19, FLT DK LIGHT PILOT MISC IND 1
3) 6F20, FLT DK LIGHT PILOT MISC IND 2
4) 6L1, FLT DK LIGHT STBY INST
(b)
P7 Overhead Circuit Breaker Panel
1) 7D7, FLT CONT CMPTR SERVO L
2) 7D12, FLT CONT CMPTR SERVO C
3) 7D14, FLT CONT CMPTR SERVO R
4) 7E9, MCP L
5) 7E18, MCP R
(6)
Do this task: Ground Test - Mode Control Panel (Ref 22-10-00/501).
S 862-012
(7)
Remove the electrical power if it is not necessary (Ref 24-22-00/201).
S 742-011
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A
747-400
MAINTENANCE MANUAL
(4 LOCATIONS)
MODE SELECT SWITCH LENS MODULE
1
THE JACKSCREW IS AT THE TOP IN THE
SWITCH MODULE, AND BEHIND THE MATING
PLATE FOR THE LENS MODULE.
Mode Select Switch Removal/Installation
Figure 201
A78719
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