ALL 09 Page 406 Apr 25/9734-57-01
ADF CONTROL PANEL - REMOVAL/INSTALLATION
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1. General
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A. Both ADF control panels are mounted in the flight deck on the pilots' control stand. Each panel is mounted with four fasteners and has electrical connections via a cable connector at the rear of the unit.
2. Referenced Procedures
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A. 24-22-00, Maintenance Practices (Apply Power)
3. Remove ADF Control Panel
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A. Open ADF 1 AC, ADF 1 DC, ADF 2 AC, and ADF 2 DC circuit breakers on electronic circuit breaker panel P7 before removing panel.
B. Loosen fasteners on control panel, pull control panel out and remove cable connector.
4. Install ADF Control Panel
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A. Attach cable connector to control panel and secure panel in place with four fasteners.
B. Provide electrical power (Ref 24-22-00).
C. Select OFF position (if provided) on ADF control panel(s) at pilots control cabin, then close circuit breakers on electronic circuit breaker panel P7.
D. Check that panel lights are on.
NOTE: Check that flight deck panel lights are bright.
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E. Perform ADF system tests in Adjustment/Test section.
F. Select OFF, ANT, or ADF mode at ADF control panel(s), as required.
G. Remove electrical power if no longer required (Ref 24-22-00).
EFFECTIVITY
ALL 01 Page 401 Jan 25/7934-57-02
ADF RECEIVER - REMOVAL/INSTALLATION
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1. General
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A. Both receivers are mounted on the aft rack in the center fuselage electronic equipment center. RF inputs from the antenna are supplied to each receiver via two cable connectors on the front while electrical interface is provided via a rack connector at the rear of the unit.
2. Referenced Procedures
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A. 24-22-00, Manual Power - Maintenance Practices (Apply Power)
3. Remove ADF Receiver
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A. Open ADF 1 AC, ADF 1 DC, ADF 2 AC, and ADF 2 DC circuit breakers on electronic circuit breaker panel P7 before removing receiver.
B. Remove two cable connectors from front of receiver, loosen hold-down fastener and pull out receiver.
4. Install ADF Receiver
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A. Provide electrical power. Refer to 24-22-00.
B. Slide receiver into rack and secure hold-down fastener on front. Attach two cable connectors to front of receiver.
C. Select OFF mode (if provided) on ADF control panel(s) in pilot's control cabin, then close ADF 1 AC, ADF 1 DC, ADF 2 AC, and ADF 2 DC circuit breakers on electronic circuit breaker panel P7. Reselect ON mode (if provided) at ADF control panel(s).
D. Select ANT mode at ADF control panel(s). Check ADF panel lights are on.
NOTE: Check flight deck panel lights are on bright.
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(1)
Perform ADF system tests in Adjustment/Test section.
(2)
Select OFF, ANT, or ADF mode at ADF control panel, as required.
E. Remove electrical power if no longer required. Refer to 24-22-00.
EFFECTIVITY
ALL 01 Page 401 Jan 25/7934-57-03
PERFORMANCE MANAGEMENT SYSTEM - DESCRIPTION AND OPERATION
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1. General (Fig. 1)
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A. The performance management system (PMS) provides both throttle and pitch control to attain and maintain required altitudes and speeds with the most efficient use of fuel for the selected climb, cruise or descent mode of operation. For example, during cruise the pitch control maintains the airplane altitude at the selected altitude, smooths out temporary speed changes and reduces throttle activity. The throttles are controlled during cruise to compensate for longer term effects on speed.
B. The performance management system (PMS) provides waypoint control over the inertial navigation system (INS) so that all waypoint data may be entered into the PMS rather than into the INS. The PMS stores distance measuring equipment (DME) station data in the PMS computer unit memory. This data is selected for a desired flight plan and is also used by the PMS to provide DME updated present position to the INS.
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本文链接地址：747飞机维护手册AMM CHAPTER 34 - NAVIGATION 第34章导航4(116)
