SD3-60 AIRCRAFT MAINTENANCE MANUAL & STANDBY COMPASS LIGHTING - DESCRIPTION & OPERATION

Transcription

1 AMM ROOF PANELS & STANDBY COMPASS LIGHTING - DESCRIPTION & OPERATION 1. Description Roof panels 4P and 10P are respectively equipped with 35 and 5 pillar lights; these in common with the integrally lit standby compass on the centre windshield are controlled by a dimmer on panel 4P. Power supplies are taken from the 28 V d.c. Left Essential Services busbar, via C/B No. 40 on distribution panel 1 D. 2. Operation With electrical power available and C/B No. 40 on panel 1D, in the PANEL LIGHTS dimmer control on 4P is adjusted to achieve the desired level of lighting Page 1

2 AMM ROOF PANELS AND STANDBY COMPASS LIGHTING - MAINTENACE PRACTICES 1. Adjustment/Test A. Function test (1) Refer to , pb301. Provide electrical power. (2) Close C/B No. 40 on 1D panel and select PANEL LIGHTS dimmer on Panel 4P. (3) Check that the standby compass on the centre windshield pillar, and the pillar lights on 4P and 10P panels are all lit and bright. (4) Rotate the PANEL LIGHTS dimmer on Panel 4P slowly to dim and check that all the lighting in (3) becomes progressively dim until it actually goes out. (5) Return aircraft to unpowered state Page 201

3 AMM MAIN INSTRUMENT PANEL LIGHTING - DESCRIPTION & OPERATION 1. Description Main instrument and Avionic Panel lighting is operated by five PANEL LIGHT dimmer controls, two left and two right on panel 1P, and one on panel 2P. The upper dimmer switch, left and right is titled FLT SYSTEM and respectively controls the 28V D.C. lighting supply for the No. 1 and No. 2 Flight Directors. The supply is derived from the left and right 28V D.C. Essential Services busbars. The GENERAL DIMMER, left and right, each consist of a variable transformer, fed from the appropriate 115V 400 H busbar and giving an A.C. output of 0 to 5.75 volts; this output is directly employed to integrally light those units on panel 1P requiring 5 volts A.C. maximum and is also fed to an associated 5-28V auto transformer mounted adjacent to panel 1P and idented 1LJ5 - left, 2LJ5 - right. The 28V A.C. auto transformer output, left and right is used to (a) power units on panel 1P requiring 28V AC for internal lighting and (b) provide panel 1P, 2P and 5P pillar lighting supplies. The AVIONICS dimmer controls the brightness of the avionic digital displays on panel 2P. It is fed with 28V DC from No. 1 and No. 2 VHF systems. 2. Operation A. FLT SYSTEM dimmers With the 28V D.C. left and right Essential Services busbars energied and C/B Nos. 42 and 194 on respective distribution panels 1D and 2D closed, the appropriate dimmer can be set to obtain required integral lighting level for the No. 1 and No. 2 Flight Directors. B. GENERAL dimmers With the 115V A.C. left and right busbars energied and C/B Nos. 311, 312, 313 & 321 on panel 1D and C/B Nos. 361, 362, 363 & 371 on panel 2D are closed, the appropriate dimmer can be set to the required lighting intensity for related units and pillar lights. C. AVIONICS dimmers With 28V D.C. supplied from No. 1 and No. 2 VHF systems and C/B Nos. 310 and 360 on respective panels 1D and 2D closed, the AVIONICS dimmer can be set to obtain the required lighting for the appropriate digital displays Page 1

4 AMM MAIN INSTRUMENT PANEL LIGHTING - MAINTENANCE PRACTICES 1. Adjustment/Test A. Function test FLT SYSTEM dimmer controlled lighting. (1) Select left and right dimmers on panel 1P fully clockwise. (2) Refer to , pb301. Energie the left and right D.C. busbars. (3) Ensure that C/B Nos. 42 and 194 on respective distribution panels 1D and 2D are closed. (4) Check that the following Flight Director units on panel 1D and 2D are closed. No. 1 attitude director indicator ) Left dimmer No. 1 horiontal situation indicator ) controlled No. 2 attitude director indicator ) Right dimmer No. 2 horiontal situation indicator ) controlled (5) Slowly turn dimmers anti-clockwise, checking related integral lighting diminishes and eventually goes out. B. Functional test GENERAL dimmer controlled lighting. (1) Select left and right dimmers on panel 1P fully clockwise. (2) Refer to , pb301.energie the left and right A.C. busbars. (3) Check left dimmer controlled lights as follows:- (a) Ensure C/B Nos 311, 312, 313 & 321 are closed. (b) Open C/B No. 371 to isolate supplies from right dimmer. (c) Check that the following (if fitted) are bright and lit. UNIT Fuel flowmeter totalier indicator LOCATION 1P Left and right fuel flowmeter rate indicators 1P No. 1 flight control panel 1P Radar altimeter indicator 1P No. 1 encoding altimeter 1P No. 1 standby gyro 1P Page 201

5 UNIT Left and right inter turbine temperature indicators 1P Left and right gas generator speed indicators 1P Left and right engine torque indicators 1P Left and right oil temperature/pressure indicators 1P Left and right propeller speed indicators 1P No. 1 D.M.E. indicator 1P Outside temperature indicator 1P 4 pillar lamps 1P Left Hand Clock 1P No. 1 Airspeed Indicator 1P No. 1 Vertical Speed Indicator 1P No. 1 Radio Magnetic Indicator 1P Nav 2 Repeater Indicator 2P NOTE: Additionally check that the two pillar lamps on the Pilot's Speed/Power Memory board (Refer to , pb1.) are lit and bright when the boardmounted control switch is set to ON; the board is centrally located above panel 1P. (d) Slowly turn dimmers anti-clockwise, checking related integral lighting diminishes and eventually goes out. (4) Check right dimmer controlled lights as follows:- (a) Ensure C/B No. 361, 362, 363 and 371 are closed. (b) Open C/B No. 321 to isolate supplies from left dimmer. LOCATION (c) Check that the following are lit and bright:- No. 2 encoding altimeter UNIT LOCATION 1P No. 2 D.M.E. indicator 1P No. 2 standby attitude gyro 1P No. 2 flight control panel 1P No. 2 radio magnetic indicator 1P Flight data entry panel 1P Flap position indicator 1P Right hand clock 1P No. 2 vertical speed indicator 1P Page 202

6 3 Pillar lamps 1P No. 1 Nav controller 2P No. 2 Nav controller 2P No. 1 VHF controller 2P No. 2 VHF controller 2P Weather radar indicator 2P Transponder control unit 2P No. 1 ADF controller 2P 2 Pillar lamps 2P 1 Pillar lamp 5P (d) Slowly turn dimmers anti-clockwise, checking related integral lighting diminishes and eventually goes out. C. Function test the AVIONICS dimmer controlled lighting:- (1) Close the following circuit breakers (if fitted):- C/B No. UNIT LOCATION 65 1D 305 1D 310 1D 216 2D 356 2D 360 2D 401 5D 404 5D 405 5D 408 5D 431 6D 434 6D 435 6D 437 6D LOCATION (2) Ensure that the digital displays in the VHF, NAV, ADF and TRANSPONDER controllers are bright. (3) Rotate the AVIONICS light dimmer anti clockwise and check that the digital displays dim Page 203

7 (4) Select the AVIONICS master switch to OFF. (5) Return the aircraft to the unpowered state Page 204

8 AMM SIDE PANEL LIGHTING - DESCRIPTION & OPERATION 1. Description 1D panel is illuminated by a utility light mounted just forward of station 54 at the lower coupe rail and is identified, LK13. 2D panel is illuminated by a floodlight which is mounted on the right side of the centre duct and is identified LK5. The utility light is switched on/off by a switch at station 52, on the left side of the aircraft, and provides three positions, OFF, BRT (bright) DIM. Similarly the floodlight for panel 2D is switched either OFF, BRT (bright) DIM by a switch mounted on panel 11P. The 1st and 2nd pilots AUDIO PANEL and 7P, 11P and 9P panels are illuminated by pillar lights, the brilliance of which can be controlled by dimmer switches on panels 11P and 7P on the left and right of the aircraft respectively. 2. Operation 1D panel utility light is controlled by a switch, LK11, mounted adjacent to station 52 in the flight compartment. The switch provides a BRIGHT/OFF/DIM control and is itself fed from C/B No. 43 on 1D panel. This switches the power from C/B No. 43 through a resistor, ILK10, mounted adjacent to the switch. The pillar lights on the 1st pilots audio panel and 7P panel are fed from C/B No. 41 on 1D panel. The circuit breaker provides the on/off control with a bright/dim capability controlled by a PANEL LIGHTS dimmer mounted on 7P panel. The floodlight, LK5, is fed from C/B 190 on 2D panel. A switch - CIRCUIT BREAKER PANEL LIGHT - on 11P panel provides a BRIGHT/OFF/DIM facility: dimming being achieved by switching the power from C/B 190 through a resistor 2LK10. The pillar lights on the 2nd pilots audio panel, 9P and 11P panels are fed from C/B 191 on 2D panel. They are controlled by a PANEL LIGHTS dimmer mounted on 11P panel Page 1

9 AMM SIDE PANEL LIGHTING MAINTENANCE PRACTICES 1. Adjustment/Test A. Function test. (1) Refer to , pb301. Provide electrical power. (2) Close C/B No. 41 on 1D panel. (3) Adjust the PANEL LIGHTS DIM, dimmer on 7P panel to give full brightness on pillar lamps on first pilots audio panel and 7P panel. (4) Check that all pillar lamps in 3 above are lit and full bright. (5) Rotate dimmer - on 7P panel to dim lights. (6) Check that all the lights are dim. (7) Close C/B No. 43 on 1D panel. (8) Select BRT (bright) on switch LK11 at station 52 on the left hand side of the flight compartment. (9) Check that the utility light LK13 just forward of station 54 on the lower coupe rail is lit and full bright. (10) Select DIM on switch LK11. (11) Check that the utility light LK13 is dimmed. (12) Select OFF on switch LK11. (13) Check that utility light LK13 is off. (14) Close C/B No. 191 on 2D panel. (15) Adjust the PANEL LIGHTS DIM dimmer on 11P panel to give full brightness on pillar lamps on 2nd pilots - audio panel, 9P panel and 11P panel. (16) Check that all pillar lamps in 15 are lit and full bright. (17) Rotate the dimmer - to dim lights. (18) Check that the lights are dimmed. (19) Close C/B No. 190 on 2D panel. (20) Select BRT (bright) on C/BREAKER PANEL LIGHTS switch on panel 11P Page 201

10 (21) Check that the floodlight LK5 on the centre duct is lit and bright. (22) Select DIM on C/BREAKER PANEL LIGHTS switch. (23) Check that floodlight LK5 is dimmed. (24) Select OFF on C/BREAKER PANEL LIGHTS switch. (25) Check that the floodlight is off. (26) Restore aircraft to unpowered state Page 202

11 AMM PILOTS SPEED/POWER MEMORY BOARD ILLUMINATION - DESCRIPTION AND OPERATION 1. Description The Pilot Speed/Power Memory Board is illuminated by two pillar lights which are controlled, on/ off by a switch on the board. Power to the switch is controlled in conjunction with Main Instrument Panel lighting. Refer to , pb1. 2. Operation With (a) supplies for the operation of the left GENERAL dimmer control on panel 1P available and (b) the speed/power memory board switch set to ON, the two pillar lamps on the board will illuminate to the intensity set by the referred dimmer Page 1

12 AMM PILOTS SPEED/POWER MEMORY BOARD ILLUMINATION - MAINTENANCE PRACTICES 1. Adjustment/Test A. Function test Refer to function test of Main Instrument Panel Lighting. Refer to , pb Page 201

13 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk CARGO BAY LED LIGHTING AMM SUPPLEMENT JW Speaker model 734 LED cargo lights INTRODUCTION: The following maintenance and troubleshooting procedures are to be followed during the course of scheduled maintenance and inspection or when a malfunction occurs to the Air Cargo Carriers Designed LED lighting system. The Cargo bay lighting need not be operational for flight, if an unknown problem occurs, pull breaker labeled cargo bay lights and secure before flight. SCHEDULED INSPECTIONS: Perform a basic operational check of the lighting at each Line A inspection as follows: 1. Turn lights on- Three LED lights should activate, check for nonfunctioning sections within each lamp. If any defect is noted see troubleshooting guide. 2. Turn lights off using the switch or by allowing the timer to deactivate the system. The lights should turn off. Perform a full system Inspection at each 4800 hour/four year structural inspection as follows: 1. After removal of the cargo liner visually inspect relay mount, relays, system wiring, and all connections for security and any evidence of arcing or burning. If any defects are noted see troubleshooting guide. 2. Turn lights on all lights should activate check for nonfunctioning sections within each light. 3. Check that lights reset at specified time limit, twenty minutes ± five minutes. 4. Turn light back on, all lights should activate, test system reset pushing switch to the off position, all lights should de-activate. 5. Connect ground power in accordance with maintenance manual, all light strips should come on when the light switch is pushed up. Lights should deactivate when ground power is removed. Lights should not turn off when time limit is reached. Report No.: Page 28 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

14 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk JW Speaker model 734 TROUBLESHOOTING: DISCREPANCY Lamp activates but some sections within light are not functioning. Entire lamp does not activate when other lamps activate. No lamps activate when switch is pushed upward. 1. Check if aircraft power is available at right battery buss and/or Ground services buss. 2. Check Breaker labeled cabin lights. 3. Troubleshoot using system wiring diagram. Lights do not turn off automatically within 20 ± five minutes. 1. Check diode across A2 and A1 for short 2. Relay K2 stuck closed CORRECTIVE ACTION Replace lamp when more than half of LEDs do not function. Check for voltage at connection of lamp. If voltage is found replace light lamp. If no voltage is found check system wiring. Reference Manufacturers Maintenance manual for troubleshooting. RESET BREAKER REPAIR / REPLACE SYSTEM WIRING/RELAYS/SWITCH AS NECESSARY Verify time delay relay settings Replace diode Replace K2 relay 3. Time delay relay defective or not set correctly 4. Cabin light switch stuck in the on position Cabin light does not turn off with cabin light switch. 1. Check switch 2. Check if relay K1 energies by checking power across X1 and X2 with light switch in the off position If setting is correct replace time delay relay Replace cabin light switch Replace if defective Replace relay K1 or repair wiring. Report No.: Page 29 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

15 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk JW Speaker model 734 RELAY TIME ADJUSTMENT (CNS timer) Time delay relay adjustment, dip switches and knob Set dip switches as illustrated, Knob further adjusts time limit from minutes, adjust knob until time limit is time limit is within 20 minutes ± 5 minutes. Report No.: Page 30 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

16 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk CARGO BAY LED LIGHTING AMM SUPPLEMENT Patriot LED Cargo Light p/n INTRODUCTION: The following maintenance and troubleshooting procedures are to be followed during the course of scheduled maintenance and inspection or when a malfunction occurs to the Air Cargo Carriers Designed LED lighting system. The Cargo bay lighting need not be operational for flight, if an unknown problem occurs, pull breaker labeled cargo bay lights and secure before flight. SCHEDULED INSPECTIONS: Perform a basic operational check of the lighting at each Line A inspection as follows: 3. Turn lights on. Three LED lights should activate. Check for nonfunctioning sections within each lamp. If any defect is noted see troubleshooting guide. 4. Turn lights off using the switch or by allowing the timer to deactivate the system. The lights should turn off. Perform a full system Inspection at each 4800 hour/four year structural inspection as follows: 6. Remove the cargo liner and visually inspect relay mount, relays, system wiring, and all connections for security and any evidence of arcing or burning. If any defects are noted see troubleshooting guide. 7. Turn lights on. lights should activate. Check for nonfunctioning sections within each light. 8. Check that lights reset at specified time limit: twenty minutes ± five minutes. 9. Turn light back on. lights should activate. Test system reset by pushing switch to the off position, all lights should de-activate. 10. Connect ground power in accordance with maintenance manual, all light strips should come on when the light switch is pushed up. Lights should deactivate when ground power is removed. Lights should not turn off when time limit is reached with ground power is supplied. Report No.: Page 32 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

17 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk Patriot LED Cargo Light p/n TROUBLESHOOTING: DISCREPANCY Lamp activates but some sections within light are not functioning. Entire lamp does not activate when other lamps activate. No lamps activate when switch is pushed upward. 4. Check if aircraft power is available at right battery buss and/or Ground services buss. 5. Check Breaker labeled cabin lights. 6. Troubleshoot using system wiring diagram. Lights do not turn off automatically within 20 ± five minutes. 5. Check diode across A2 and A1 for short 6. Relay K2 stuck closed CORRECTIVE ACTION Replace lamp when more than half of LEDs do not function. Check for voltage at connection of lamp. If voltage is found replace light lamp. If no voltage is found check system wiring. Reference Manufacturers Maintenance manual for troubleshooting. RESET BREAKER REPAIR / REPLACE SYSTEM WIRING/RELAYS/SWITCH AS NECESSARY Verify time delay relay settings Replace diode Replace K2 relay 7. Time delay relay defective or not set correctly 8. Cabin light switch stuck in the on position Cabin light does not turn off with cabin light switch. 3. Check switch 4. Check if relay K1 energies by checking power across X1 and X2 with light switch in the off position If setting is correct replace time delay relay Replace cabin light switch Replace if defective Replace relay K1 or repair wiring. Report No.: Page 33 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

18 Data Support Package Cabin Lighting Prepared By: Luke Bartosuk Patriot LED Cargo Light p/n RELAY TIME ADJUSTMENT (CNT timer) To set relay to release (shut off lights) after 20 minutes, set digits to B020M (Reference tyco electronics data sheet catalog issued 3-03 Report No.: Page 34 Aircraft: Shorts SD3-30 and SD3-60 Revision: F Date:

19 AMM PASSENGER AND LAVATORY COMPARTMENT LIGHTING - DESCRIPTION AND OPERATION 1. Description Sixteen flourescent tubes provide the lighting for the passenger compartment, thirteen for the seating area, one for the lavatory and two for the entrances(aft). Ballast control, essential to the operation of the flourescent tubes, is employed to connect a 28V d.c. input into an alternating current in excess of 350 volts at 38 KHZ or greater. Three ROOF LIGHTS switches, panel 12P, provide the control for the passenger compartment lighting. They are three position switches which provide an OFF/DIM/BRT (bright) facility. The RIGHT switch controls seven right forward tubes. The ENTRANCE switch controls the two aft tubes and the LEFT switch controls the six left forward tubes. The lavatory light is controlled by a microswitch in conjunction with the compartment door lock. No dimming facility is available. The door lock microswitch also controls the LAVATORY OCCUPIED passenger sign. A lavatory compartment facility light is also provided. 2. Operation With electrical power supplied and circuit breakers 126, 127 and 128 closed on 3D panel, the forward seven right and six left, passenger compartment lights may be switched on by separate switches. The aft two of the 15 passenger compartment lights are separately switched as entrance lights. Each of the three switches has a BRT (bright) and DIM facility which can be selected for the respective flourescent tubes. With C/B 127 closed the lavatory compartment utility light is permanently lit. Locking the lavatory door closes a microswitch which switches on the lavatory compartment flourescent tube and the LAVATORY OCCUPIED sign. There is no dimming facility for either the lavatory compartment utility light or the flourescent tube Page 1

20 AMM PASSENGER & LAVATORY COMPARTMENT LIGHTING - MAINTENANCE PRACTICES 1. Adjustment/Test A. Function check. (1) Refer to , pb301. Provide electrical power. (2) Close circuit breakers 126, 127 and 128 on 3D panel. (3) Check that the lavatory compartment utility light is lit. (4) Close and lock the lavatory door and check that both the LAVATORY OCCUPIED passenger sign is lit and also the lavatory flourescent light. (5) Switch on the ROOF LIGHTS switches, panel 12P, and ensure that the thirteen seating area lights and the two aft entrance lights are lit. (6) Operate the bright (BRT)/DIM switch facilities and check that the forward seven right, forward six left and two aft entrance lights are controlled BRT/DIM respectively. (7) Return the aircraft to the unpowered state Page 201

21 AMM READING, BOARDING & EMERGENCY LIGHTS - DESCRIPTION & OPERATION (POST MODS A8565 AND A8625) 1. Description A. Reading Lights (1) General Reading lights for seat rows 1 to 12, left and right, are provided on Passenger Service Units (P.S.U.'s), located on the undersurface of the overhead lockers. The left and right P.S.U.'s are respectively single and double units to facilitate seating configuration. (2) Control and Power Supplies The 28V d.c. operating power is supplied from the PASSENGER COMPARTMENT SERVICES busbar via:- (a) 3 amp C/B No.132 on panel 3D - pre mod A7518 (b) 3 amp C/B Nos. 130, 131, and 132 on distribution panel 3D - post mod A7518 or Service Bulletin SD The supply is made available to the P.S.U.'s when the READING LIGHTS switch on flight attendant's panel is selected ON. Individual control of each reading light is afforded by an associated push/pull switch on the P.S.U. B. Boarding Lights (1) Reading lights located in alternative seat rows 1 through 11 (left) and the respective inboard and outboard reading lights on rows 1 and 12 (right) are additionally employed as boarding lights (by-passing P.S.U. switches). NOTE: The FLOOR PROXIMITY ESCAPE PATH LIGHTING SYSTEM will be operational with the BOARDING/EMERGENCY LIGHTS switch set to BOARDING. Refer to , pb1. (2) Control & Power Supplies Supply to the boarding lamps is derived from the 28V D.C. EMERGENCY LIGHTING busbar on panel 3D via 1 amp C/B Nos 115 thru 122. The EMERGENCY LIGHTING busbar is energied from the 28V D.C. RIGHT BATTERY busbar via 5 amp C/B No 214 on panel 2D, upon selection of the BOARDING/EMERGENCY LIGHTS switch to BOARDING. NOTE: Two battery discharge lights, one on panel 12P and one adjacent to the passenger exit sign at frame 475, illuminate when the BOARDING/EMERGENCY LIGHTS switch is set to BOARDING Page 1

22 C. Emergency Lighting (1) General Emergency lighting comprises:- (a) utiliation of the boarding lights. (b) utiliation of the FLOOR PROXIMITY ESCAPE PATH LIGHTING system. Refer to , pb1. (c) two exit signs, located at frames 428 and 475. (d) four emergency exit signs, one located centrally at frame 74 and one above each emergency exit. (e) four external lights to aid evacuation, one located on bottom of each exit door. (2) Control and Power Supplies Emergency lighting control circuitry is designed such that it can be powered from panels 1D or 3D; this ensures that should transverse fuselage separation occur in a crash landing, power to the related lights will be available from at least one end of the aircraft. (a) Control afforded by the BOARDING/EMERGENCY LIGHTS switch on panel 12P. Upon selection of the BOARDING/EMERGENCY LIGHTS switch to EMERGENCY LIGHTS:- 1 28V d.c. is made available to the EMERGENCY LIGHTING busbar on panel 3D via 7.5 amp C/B No. 125, also on panel 3D. On aircraft post mod A8286, an alternative supply is availed via C/B No 66 on panel 1D. 2 the boarding lights (described in para B), illuminate via 1 amp C/B Nos 115 thru 122 on panel 3D. 3 three EMERGENCY EXIT signs and two EMERGENCY EXTERNAL lights, located between frames 74 and 107 illuminate via 5 amp C/B No. 125 & C/B No. 123 or C/B No. 66 & C/B No two EXIT signs, one EMERGENCY EXIT sign and two EMERGENCY EXTERNAL lights, located between frames 428 and 475 illuminate via 5 amp C/ B No. 125 & C/B No. 124 or C/B No. 66 & C/B No Page 2

23 5 two BATTERY DISCHARGE WARNING lights located on panel 12P and adjacent to the exit sign at frame 475 illuminate. NOTE: The FLOOR PROXIMITY ESCAPE PATH LIGHTING will be operational with the BOARDING/EMERGENCY LIGHTS switch set to EMERGENCY LIGHTS. (b) Control afforded by selection of the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ON. 1 28V d.c. is made available to the EMERGENCY LIGHTING busbars on panels 2D and 3D via 7.5 amp C/B No. 66 on panel 1D. 2 the boarding lights illuminate. 3 three EMERGENCY EXIT signs, located between frames 74 and 107, illuminate via 5 amp C/B Nos. 264 on panel 2D or 123 on panel 1D. 4 two EXIT signs, one EMERGENCY EXIT and two EMERGENCY EXTERNAL lights, located between frames 428 and 475 illuminate via 5 amp C/B Nos. 263 on panel 2D or 124 on panel 3D. 5 two battery discharge lights, located on panel 12P and adjacent to the exit sign at frame 475 illuminate. NOTE: The FLOOR PROXIMITY ESCAPE PATH LIGHTING will be operational with the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch set to ON. (c) Control afforded by selection of the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED. Prior to engine start, with the pilots EMERGENCY PASSENGER COMPARTMENT LIGHTS switch set to ARMED, relay LM20 on panel 30C will be energied via relays P and CK on panel 2C, ensuring that the emergency lighting does not illuminate. After the generators come on line, relay P latches, breaking the supply to the coil of relay LM20. Simultaneously, relays S and Z on panel 2C energie, reconnecting the supply. During the switching period, a capacitor across the coil of relay LM20 ensures the relay does not de-energie and the emergency lighting remains extinguished. In flight, after a right system generator failure, the emergency lighting, as described in para (b) will illuminate due to the loss of the GROUND SERVICES busbar. In the event of a double generator failure on the ground, the emergency lighting will illuminate, due to the latching action of relay P which isolates the coil of the relay Page 3

24 CAUTION: PRE MOD A8286 AIRCRAFT ONLY. SELECTING THE EMERGENCY PASSENGER COMPARTMENT LIGHTS SWITCH TO OFF MUST BE ACCOMPANIED BY SELECTION OF THE RESET BUTTON ON PANEL 12P. FAILURE TO DO SO WILL RESULT IN DEPLETION OF THE TAIL EMERGENCY BATTERY WITHIN 16 MINUTES. NOTE: It is not possible to differentiate between a double generator failure and a scheduled shutdown of both engines. Therefore, after both engines are shutdown it is necessary to select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and, on pre mod A8286 aircraft only, press the RESET button on panel 12P. Aircraft post mod A8286, circuitry is designed such that selecting the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF energises coil X of the magnetic latch relay, thereby isolating the tail battery from the emergency lighting circuitry. D. Step riser light (frame 458) 2. Operation This light is illuminated with 28V d.c. operating power made available from the PASSENGER COMPARTMENT SERVICES busbar via C/B No.132. With the appropriate 28V d.c. power supplies available, control and operation of the reading, boarding, emergency and step riser lighting is essentially as described in the preceeding paragraphs Page 4

25 AMM READING, BOARDING & EMERGENCY LIGHTING - MAINTENANCE PRACTICES (PRE MOD A8286 AIRCRAFT ONLY) 1. Adjustment/Test A. General (1) Ensure that the following circuit breakers are tripped (open):- (a) Panel 1D - CB66. (b) Panel 2D - CB205, CB214, CB231, CB243 and CB255 thru 263 inclusive. (c) Panel 3D - CB115 thru CB125 inclusive, CB132, CB136 and CB137. Aircraft post mod A7518 or post Service Bulletin SD , trip CB130 and CB131 on panel 3D. Aircraft post mod A7801 or post Service Bulletin SD , trip CB141 on panel 3D and CB231 on panel 2D. (2) Ensure the following switches are selected OFF:- (a) Panel 4P - Main BATTERY switches, LEFT and RIGHT. (b) Panel 10P - EMERGENCY PASSENGER COMPARTMENT LIGHTS switch. (c) Panel 12P - READING LIGHTS switch and BOARDING/EMERGENCY LIGHTS switch. (3) Refer to , pb301. Provide electrical power from an external source. NOTE: Throughout these procedures, references to lights annotated thus * are applicable only to aircraft post mod A7801 or Service Bulletin SD B. Function Test (Reading Lights) (1) Ensure that the general procedures of para A. have been noted and accomplished. (2) Close CB130, CB131, CB132 and CB205. (3) Select the READING LIGHTS switch on panel 12P to ON. (4) Ensure that all passenger reading lights of rows 1-12 are operable ON/OFF when controlled by their individual switches. (5) Select the READING LIGHTS switch to OFF. (6) Trip circuit breakers CB130, CB131, CB132 and CB Page 201

26 C. Function Test (Boarding Lights) (1) Ensure that the general procedures of para A. have been noted and accomplished. (2) Select the BOARDING/EMERGENCY LIGHTS switch on panel 12P to BOARDING and close circuit breaker CB215. (3) Close the following circuit breakers individually and ensure that the associated light illuminates:- Circuit Breaker C/B No. 115 C/B No. 116 C/B No. 117 C/B No. 118 C/B No. 119 C/B No. 120 C/B No. 121 C/B No. 122 Lights Row 1, Seat C reading lamp Row 1, Seat A reading lamp Row 3, Seat A reading lamp Row 5, Seat A reading lamp * Four electroluminescent strip lights on the cabin floor Row 7, Seat A reading lamp Row 9, Seat A reading lamp * Four electroluminescent strip lights on the cabin floor Row 11, Seat A reading lamp Row 12, Seat B reading lamp * Two electroluminescent strip lights on the cabin floor * Two electroluminescent exit signs (frame ) (4) Select the BOARDING/EMERGENCY LIGHTS switch to OFF and ensure the lights extinguish. (5) Trip all circuit breakers closed during this procedure. D. Function Test (Emergency Lights) (1) Ensure the general procedures in para A. have been noted and accomplished. NOTE: Throughout this procedure the term 'emergency lights' refers to the following:- (a) Forward and aft emergency external lights (left and right). (b) Three forward EMERGENCY EXIT signs, located between frames 74 and 107. (c) One aft EMERGENCY EXIT sign and two EXIT signs located between frames 428 and 475. (d) The reading lights located on the single P.S.U's at rows 1, 3, 5, 7, 9 and Page 202

27 (e) The inboard and outboard reading lights located on the double P.S.U at rows 1 and 12. (f) Two battery discharge lights, located on panel 12P and adjacent to the passenger exit sign. (g) *Ten floor strip lights and two exit signs, integral to the FLOOR PROXIMITY ESCAPE PATH LIGHTING SYSTEM. Refer to , pb1. (2) Close circuit breaker CB125. (3) Select the BOARDING/EMERGENCY LIGHTS switch to EMERGENCY LIGHTS. (4) Close circuit breakers CB115 thru CB124 and ensure the emergency lights illuminate. (5) Select the BOARDING/EMERGENCY LIGHTS switch to OFF and ensure that the emergency lights extinguish. (6) Trip circuit breakers CB115 thru CB124. (7) Close circuit breaker CB243 and ensure that the 'Emergency lighting not armed' indicator illuminates. (8) Close circuit breaker CB66. (9) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ON and ensure that the 'Emergency lighting not armed' indicator extinguishes. (10) Close circuit breakers CB255 thru CB264 and ensure that the emergency lighting illuminates. (11) Trip circuit breakers CB255 thru CB264 and ensure that the emergency lighting extinguishes (12) Close circuit breaker CB116 and ensure that Row 1, Seat A reading light is illuminated. (13) Trip circuit breaker CB116. (14) Close circuit breakers CB115 thru CB124. The emergency lighting illuminates. (15) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure that the emergency lighting remains illuminated. (16) Press and release the RESET switch on panel 12P and ensure the emergency lights extinguish. (17) Close circuit breakers CB136 and CB243. (18) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED Page 203

28 (19) Trip circuit breaker CB243 and ensure that the emergency lighting illuminates. (20) Close circuit breaker CB243 and ensure that the emergency lighting remains illuminated. (21) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure that the emergency lighting remains illuminated. (22) Press and release the RESET switch and ensure the emergency lighting extinguishes. (23) Close circuit breaker CB137. (24) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED. (25) Trip circuit breaker CB136 and ensure that the emergency lighting illuminates. (26) Close circuit breaker CB136 and ensure that the emergency lighting extinguishes. (27) Refer to , pb301. Disconnect the external power supply. (28) Refer to , pb1. Start both engines and ensure that all generator indications are normal. (29) Ensure that all circuit breakers tripped in para A. are reset. (30) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ON and ensure the emergency lighting illuminates. (31) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure the emergency lighting remains illuminated. (32) Press and release the RESET button and ensure the emergency lighting extinguishes. (33) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED. (34) Select the LEFT and RIGHT GENERATOR TRIP/RESET switches to TRIP and ensure the emergency lighting illuminates. (35) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure the emergency lighting remains illuminated. (36) Press and release the RESET button and ensure the emergency lighting extinguishes. (37) Select the left and right GENERATOR TRIP/RESET switches to RESET and ensure both generators come back on line. (38) Shut down both engines. Refer to , pb1. (39) Select all switches to OFF or neutral. (40) Render the aircraft electrically safe Page 204

29 AMM READING, BOARDING & EMERGENCY LIGHTING - MAINTENANCE PRACTICES (POST MOD A8286 OR POST SERV.BULL. SD AIRCRAFT ONLY) 1. Adjustment/Test A. General (1) Ensure that the following circuit breakers are tripped (open). Panel 1D - C/B No 66 Panel 2D - C/B Nos 205, 214, 231, 243 and 255 thru 264 inclusive. Panel 3D - C/B Nos 115 thru 125 inclusive, 132, 136, 137 and 143. Aircraft post mod A7518 or post Serv. Bull. SD , trip C/B Nos 130 and 131 on panel 3D. Aircraft post mod A7801 or post Serv. Bull SD , trip C/B Nos 141 on panel 3D and 231 on panel 2D. (2) Ensure the following switches are selected OFF:- Panel 4P - Main BATTERY switches, LEFT and RIGHT Panel 10P - EMERGENCY PASSENGER COMPARTMENT LIGHTS switch. Panel 12P - READING LIGHTS switch - BOARDING/EMERGENCY LIGHTS switch (3) Refer to , pb301. Provide electrical power from an external source. NOTE: Throughout these procedures, references to lights annotated thus * are applicable only to aircraft post mod A7801 or post Serv. Bull SD B. Function Test (Reading Lights) (1) Ensure that the general procedures of para A have been noted and accomplished. (2) Close C/B Nos 130, 131, 132 and 205 as applicable. (3) Select the READING LIGHTS switch on panel 12P to ON. (4) Ensure that all passenger reading lights of rows 1-12 are operable ON/OFF when controlled by their individual switches. (5) Select the READING LIGHTS switch to OFF. (6) Trip C/B Nos 130, 131, 132 and 205 as applicable. C. Function Test (Boarding Lights) (1) Ensure that the general procedures of para A have been noted and accomplished Page 201

30 (2) Select the BOARDING/EMERGENCY LIGHTS on panel 12P switch to BOARDING and close C/B No (3) Close the following circuit breakers individually and ensure that the associated light illuminates:- (a) C/B No Row 1, Seat C reading lamp. (b) C/B No Row 1, Seat A reading lamp. (c) C/B No Row 3, Seat A reading lamp. (d) C/B No Row 5, Seat A, reading lamp. * Four electroluminescent strip lights on the cabin floor. (e) C/B No Row 7, Seat A reading lamp. (f) C/B No Row 9, Seat A reading lamp. * Four electroluminescent strip lights on the cabin floor. (g) C/B No Row 11, Seat A reading lamp. (h) C/B No Row 12, Seat B reading lamp. * Two electroluminescent strip lights on the cabin floor. * Two electroluminescent exit signs (frame ). (4) Select the BOARDING/EMERGENCY LIGHTS switch to OFF and ensure the lights extinguish. (5) Trip C/B Nos 115 thru 122 and 125. D. Function Test (Emergency Lights) (1) Ensure that the general procedures in para A have been noted and accomplished. NOTE: Throughout this procedure the term `emergency lights' refers to the following:- (a) Forward and aft external lights (left and right). (b) Three forward EMERGENCY EXIT signs, located between frames 74 and 107. (c) One aft EMERGENCY EXIT sign and two EXIT signs located between frames 428 and 475. (d) The reading lights located on the single P.S.U's at rows 1, 3, 5, 7, 9 and 11. (e) The respective inboard and outboard reading lights located on the double P.S.U's at rows 1 and 12. (f) Two battery discharge lights, located on panel 12P and adjacent to the passenger exit sign Page 202

31 (g) *ten floor strip lights and two exit signs, integral to the FLOOR PROXIMITY ESCAPE PATH LIGHTING SYSTEM. Refer to , pb1. (2) Close C/B No 125. (3) Select the BOARDING/EMERGENCY LIGHTS switch to EMERGENCY LIGHTS. (4) Close C/B Nos 115 thru 124 and ensure that the emergency lights illuminate. (5) Trip C/B No 125 and ensure that the emergency lights extinguish. (6) Close C/B No 66 and ensure that the emergency lights illuminate. (7) Select the BOARDING/EMERGENCY LIGHTS switch to OFF and ensure that the emergency lights extinguish. (8) Trip C/B Nos 66 and 115 thru 122. (9) Close C/B No.243 and ensure that the 'Emergency lighting not armed' indicator illuminates. (10) Close C/B No. 66. (11) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ON and ensure that the 'Emergency lighting not armed' indicator extinguishes. (12) Close C/B Nos 255 thru 264 and ensure that the emergency lighting illuminates. (13) Trip C/B Nos 255 thru 264 and ensure that the emergency lighting extinguishes. (14) Close C/B No 116 and ensure that Row 1, Seat A reading light is illuminated. (15) Trip C/B No 116. (16) Close C/B Nos 255 thru 264. (17) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure that the emergency lighting extinguishes. (18) Close C/B Nos 136 and 243. (19) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED. (20) Trip C/B No 243 and ensure the emergency lighting illuminates. (21) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure the emergency lighting extinguishes. (22) Refer to , pb301. Disconnect the external power supply Page 203

32 (23) Refer to , pb1. Start both engines and ensure that all generator indicators are normal. (24) Ensure that all circuit breakers tripped in para A are reset. (25) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ON and ensure the emergency lighting illuminates. (26) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure the emergency lighting extinguishes. (27) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to ARMED. (28) Select the left and right GENERATOR TRIP/RESET switches to TRIP and ensure the emergency lighting illuminates. (29) Select the EMERGENCY PASSENGER COMPARTMENT LIGHTS switch to OFF and ensure the emergency lighting extinguishes. (30) Select the left and right GENERATOR TRIP/RESET switches to RESET and ensure both generators come back on line. (31) Shut down both engines. Refer to , pb1. (32) Select all switches to OFF or neutral. (33) Render the aircraft electrically safe Page 204

33 AMM FLOOR PROXIMITY ESCAPE PATH LIGHTING - DESCRIPTION & OPERATION (PRE SERV.BULL. SD AIRCRAFT ONLY) 1. Description A. General The floor proximity escape path lighting system provides a visual aid to aircraft evacuation during an emergency. The system introduces the following electrical equipment:- (1) Electroluminescent strips and exit signs (12 off and 4 off respectively). (2) Four inverters. (3) Six tape busbars Operationally the strips and exit signs illuminate green to show the path to the emergency exits. Refer to , pb1. The arrangement employs the same switching and switch logic as is used for the aircraft emergency and boarding lighting, except that the 28V dc power inputs are converted to 115V 400 H. B. Electroluminescent strips and tape busbars The 12 strips are located at floor level. Ten are positioned along the aisle (immediately to the right of the LH seat rail); these are attached to the floor panels, together with the associated of four tape busbars by double-sided adhesive tape. The remaining two strips, each with a tape busbar, are positioned laterally; one at frame 74 and one on the step riser at frame 428. C. Exit signs The four EXIT signs operationally provide arrowed indication of the location of emergency exit door handles. The signs are attached left and right in the fuselage sidewalls; those for the front and rear emergency exits are respectively located immediately forward and aft of the related door coaming. D. Inverters Four 115V 400 H inverters are installed to power the associated strips and exit signs. Each inverter is operationally inputed by the 28V dc emergency lighting busbar on panel 2D and/or 3D, depending on the setting of the emergency lighting control switches on flight compartment panel 10P and on the flight attendant's panel 12P Page 1

34 2. Operation The location of the inverters, their circuit idents and their output functions are as follows:- INVERTER IDENT LOCATION OUTPUT FUNCTION 1LMA1 2LMA1 3LMA1 4LMA1 LH fuselage sidewall (aft of FR 197.2) RH fuselage sidewall (aft of FR 117.6) LH fuselage sidewall (aft of FR ) RH fuselage sidewall (aft of FR 401.7) To operate the 2nd, 3rd and 4th aisle strips (references from front to rear). To operate the forward emergency exit handle location indicators, the 1st aisle strip and the lateral strip at FR 74. To operate the 6th, 7th, 8th and 9th aisle strips. To operate the rear emergency exit handle location indicators, the 10th aisle strip, and the strip on the step riser at FR 428. The inverters will be powered to bring on the electroluminescent strips and exit signs in the following circumstances:- (1) When the EMERGENCY PASSENGER COMPARTMENT lighting switch ON/OFF/ ARMED on flight compartment panel 10P is set to ON. NOTE: (a) This will energie the emergency lighting busbars on distribution panels 2D and 3D from the left main battery. (b) The EMERGENCY LIGHTING busbar on panel 3D will also be energied from the tail battery via a lock-on relay which is in series with a RESET button on the flight attendants panel 12P. An OFF selection subsequent to ON will therefore only be effective when the RESET button is pressed momentarily. (2) When the EMERGENCY PASSENGER COMPARTMENT LIGHTING switch on the flight compartment panel 10P is set to ARMED, followed by a subsequent failure of the GROUND SERVICES busbar. NOTE: The EMERGENCY LIGHTING busbars will then be energied as in para (1) Note (a). (3) When the EMERGENCY PASSENGER COMPARTMENT LIGHTING switch on the flight compartment panel 10P is set to ARMED, followed by a double generator failure with the aircraft weight on ground Page 2

35 (4) When the BOARDING/EMERGENCY lights switch on the flight attendants panel 12P is set to ON (EMERGENCY). This will power the EMERGENCY LIGHTING busbar on panel 3D from the TAIL BATTERY busbar. (5) When the flight attendants BOARDING/EMERGENCY lights switch is set to ON (BOARDING); thus powering the EMERGENCY LIGHTING busbar on panel 3D from the RIGHT BATTERY busbar Page 3

36 AMM FLOOR PROXIMITY ESCAPE PATH LIGHTING - MAINTENANCE PRACTICES (PRE SERV BULL SD AIRCRAFT ONLY) 1. Adjustment/Test A. Function check the escape path lighting (1) Ensure that the following C/B's are closed:- (a) C/B No. 66 on panel 1D. (b) C/B Nos 214, 231, 243, 255, 257 & 259 on Panel 2D. (c) C/B Nos 118, 120, 122, 125 & 141 on Panel 3D. (2) Refer to , pb301. Energie the ground services busbar from an external source. (3) With the BOARDING/EMERGENCY switch on the flight attendants panel 12P set at OFF, make the following selections on the EMERGENCY PASSENGER COMPARTMENT lighting switch ON/OFF/ARMED on flight compartment panel 10P:- (a) Set switch to ON and check that the 12 electroluminescent strips and 4 emergency exit handle location indicators illuminate green. (b) Set switch to OFF and check lighting remains on until the RESET button on the flight attendants panel 12P is pressed momentarily. (c) Set switch to ARMED and check that escape path lighting remains off until C/B No. 243 on panel 2D is opened. Close C/B No. 243 and set switch to OFF. (4) Set the BOARDING/EMERGENCY switch on panel 12P to ON (EMERGENCY) then ON (BOARDING), checking that escape path lighting comes on for both selections and goes out when the switch is set to OFF. (5) Return aircraft to unpowered state Page 201

37 AMM BRIEFING SIGNS & CALL SYSTEMS - DESCRIPTION & OPERATION (PRE SERV BULL. SD AIRCRAFT ONLY) 1. Description A passenger briefing sign is centrally located at frame 74 in the passenger compartment. The sign assembly displays two pictorial directives, 'fasten seat belts' and 'no smoking', in addition to two illuminable legends:- LAVATORY OCCUPIED and EMERGENCY EXIT. The 'fasten seat belts' and 'no smoking' commands are controlled by their own respective switches on panel 10P. In addition the SEAT BELTS switch also controls a sign in the lavatory compartment - RETURN TO SEAT. The LAVATORY OCCUPIED legend is controlled by a microswitch in conjunction with the lavatory compartment door lock. The EMERGENCY EXIT legend is operational when the ON/ OFF/ARMED switch on panel 10P is set to ON or when the EMERGENCY/BOARDING lights switch on panel 12P is selected to ON (EMERGENCY). Each pilot has an ATTENDANT CALL switch on their respective audio panel which illuminates two lights, one on panel 12P and another on the exit sign situated at frame 475. These lights may be cancelled by a CANCEL button adjacent to the light on panel 12P. A CREW CALL switch, located on panel 12P, may be used by the attendant to attract the attention of either pilot by illumination of one of two associated lights, situated at the left and right hand side of panel 1P. Each passenger has a push/pull switch - PASSENGER TO ATTENDANT which enables them to call the attendant via two PASSENGER CALL lights, located on panel 12P and on the exit sign at frame 475. This facility is also provided in the lavatory compartment. Each PASSENGER CALL signal may only be cancelled by resetting the switch operated to call the attendant. 2. Operation Operating power for the two pictorial directives on the passenger briefing sign is provided by closing C/B No.239 on distribution panel 2D and selecting ON at both the SEAT BELTS and NO SMOKING light switches on panel 10P. Selecting ON at the SEAT BELTS switch also illuminates the RETURN TO SEAT sign in the lavatory compartment. The LAVATORY OCCUPIED legend on the briefing sign is operational when C/B No.128 on distribution panel 3D is closed and when the microswitch, located on the lavatory compartment door, is depressed. The EMERGENCY EXIT legend has a dual power supply, and is operational as follows:- A. With C/B No.125 on distribution panel 3D closed and the EMERGENCY/BOARDING LIGHTS switch on panel 12P set to ON (EMERGENCY). B. With C/B No.66 on distribution panel 1D closed and the ON/OFF/ARMED switch on panel 10P set to ON Page 1

38 Closing C/B No.200 on distribution panel 2D provides power to each pilots ATTENDANT CALL switch on their respective audio panels. Pushing either of these button switches provides power via a relay, idented 'N' on panel 2C, illuminating two associated lights, on panel 12P and on the exit sign at frame 475. These lights are cancelled when the attendant pushes a CANCEL button on panel 12P. C/B No.200 also provides power to a CREW CALL switch on panel 12P, which the attendant may use to call one or other of the pilots via a light on each side of panel 1P. Each row of seats, left and right of the passenger compartment has its own individual PASSENGER TO ATTENDANT call button, which is of a push/pull type. Pulling any one of these switches illuminates a PASSENGER CALL lamp on panel 12P. Resetting this switch cancels the PASSENGER CALL lamp. Each of the switches are supplied from C/B No.130 on distribution panel 3D and each incorporates a built in light to indicate to the attendant which seat row requires attention Page 2

39 AMM BRIEFING SIGNS & CALL SYSTEMS - MAINTENANCE PRACTICES (PRE SERV. BULL. SD AIRCRAFT ONLY) 1. Adjustment/Test A. Function Test (1) Refer to , pb301. Provide electrical power. (2) Close C/B No.206 on panel 2D. (3) Select ON on the NO SMOKING & SEAT BELTS switches on panel 10P. (4) Check that the 'no smoking' & 'fasten seat belts' pictorial directives are illuminated and also that the RETURN TO SEAT sign in the lavatory compartment is lit. (5) Select OFF on the switches and check that the signs in para (4) are off. (6) Close C/B No.128 on panel 3D. (7) Close the lavatory compartment door and check that the LAVATORY OCCUPIED sign is illuminated. (8) Re-open the lavatory compartment door and check that the LAVATORY OCCUPIED sign is extinguished. (9) Close C/B No.125 on panel 3D. (10) Select ON (EMERGENCY) on the EMERGENCY/BOARDING LIGHTS switch on panel 12P and check that the EMERGENCY EXIT sign is illuminated. (11) Select OFF on the EMERGENCY/BOARDING LIGHTS switch and check the EMERGENCY EXIT sign is extinguished. (12) Close C/B No.66 on panel 1D. (13) Select ON on the ON/OFF/ARMED switch on panel 10P and check that the EMERGENCY EXIT sign is illuminated. (14) Select OFF on the ON/OFF/ARMED switch and check that the EMERGENCY EXIT sign is extinguished. (15) Close C/B No.200 on panel 2D and press the 1st pilots ATTENDANT CALL switch on the relevant audio panel. (16) Check that both CREW to ATTENDANT call lights, on panel 12P and on the exit sign at frame 475, are illuminated. (17) Press the CANCEL button on panel 12P and ensure that the call lights extinguish Page 201