4. Procedure
_________
(Ref. Fig. 401/TASK 33-12-18-991-001) Subtask 33-12-18-420-050
A. Installation of the Map Table Light Control Box
(1) Install the Map Table light: NOTE : To make installation easier you can open the window.
____
(a)
Install the cable (2) through the hole of the support (1) and put the support (11) in position.
(b)
Install the screws (8) and (7).
(c)
Install the cover (9) with the screw (10).
(2) Install the Control-Box: NOTE : To make installation casier you can open the window.
____
(a)
Connect the female terminal lugs (16) to the male terminal lugs (15).
(b)
Install the cable (2) through the hole of the control box holder (12).
(c)
Install the four washers (13) on the screws (14).
(d)
Tighten the control box holder (12) with the four attaching screws (14) and washers (13).
(e)
Connect the cable (2). NOTE : Respect the colours when you connect the wires.
____
(f)
Install the cover (4) with the screw (6).
(g)
Install the button of the rheostat (5).
Subtask 33-12-18-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): FOR 41LE 5LE FOR 42LE 4LE
Subtask 33-12-18-710-050
C. Do the operational test (Ref. TASK 33-12-00-710-001).
5. Close-up
________ Subtask 33-12-18-942-050
A. Make sure that the work area is clean and clear of tool(s) and other items.
INSTRUMENT AND PANEL INTEGRAL LIGHTING - DESCRIPTION AND OPERATION
__________________________________________________________________
1.
General
_______ The instrument and panel integral lighting permit the crew to read the indications on these panels and instruments during night flights or flights in stormy conditions.
2.
Component Location
__________________
(Ref. Fig. 001)
-------------------------------------------------------------------------------FIN I FUNCTIONAL DESIGNATION I PANELIZONEIACCESS I ATA I I I I DOOR I REF.
-------------------------------------------------------------------------------2LF SW-INT LT, STBY COMPASS 25VU 210 6LF CONTROLLER-LIGHTING 210 33-13-51 7LF POT-INT LT/OVHD INTEG LT 25VU 210
16LF CONTROLLER-LIGHTING 212 811 33-13-51 17LF POT-INTEG LT/MAIN PNL & PED 111VU 211 30LF CONTROLLER-LIGHTING 212 811 33-13-51
2FN COMPASS STANDBY 210
Instrument and Panel Integral Lighting - Component Location
Figure 001
3. System Description
__________________ The integral lighting installed on the panels and the instruments has miniature lamps. These lamps are supplied by an alternating current with variable voltage from 0 to 5 volts. Lighting controllers deliver this alternating current. These lighting controllers generate a low voltage current source with high intensity from the 115V - 400Hz voltage. A 470 ohms potentiometer provides the continuous adjustment of the output voltage between 0 and 5 efficient volts. This output voltage is independent from the load. The table below shows the main characteristics and the function of each lighting controller.
-------------------------------------------------------------------------------| | Lighting | Supply | Adjustment | | Instrument | Controller | | Potentiometer| | and Panel |-------------------------------|------------|--------------| | Integral | Lighting | Maximum | Number | Circuit | Electrical | | Lighting | Controller | Output | of | Breaker | Identifier | | | Identifier | Power | Fuses | Identifier | | |-----------------|------------|---------|--------|------------|--------------| | Overhead Panel | 6LF | 180VA | 6 | 3LF | 7LF | |-----------------|------------|---------|--------|------------|--------------| | Captain, First | | | | | | | Officer Main | | | | | | | Instrument | | | | | | | Panels | 16LF | 180VA | 6 | 4LF | 17LF | | Center | | | | | | | Instrument Panel| | | | | | | Center Pedestal | | | | | | | Side Consoles | | | | | | |-----------------|------------|---------|--------|------------|--------------| | Glareshields | 30LF | 25VA | 3 | 5LF | 38LE | | | | + 45VA | | | | -------------------------------------------------------------------------------
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