PASSENGER LOADING LIGHTS -ATTENDANT WORK LIGHTS -FUNCTIONAL DESCRIPTION
Functional Description
28v dc power comes from the main bus to the switch. The LED in the switch is on when the switch is in the off position. This helps find the switch when the area has no light.
The attendant switch gives ON/OFF switch position information to the overhead electronics unit (OEU). The OEU gives the information to the zone management unit (ZMU). The ZMU has the logic from the configuration data base. It uses the logic to tell the OEU what light to set on. The OEU makes a ground to make the applicable attendant light come on.
Training Information Point
You can test the attendant work lights from the cabin services system (CSS) LAMPS TEST screen.
EFFECTIVITY BEJ ALL 33-22-00
Page 28
D633W101-BEJ Sep 05/2002
PASSENGER LOADING LIGHTS -ATTENDANT WORK LIGHTS -FUNCTIONAL DESCRIPTION
EFFECTIVITY BEJ ALL 33-22-00
Page 29
D633W101-BEJ Sep 05/2002
PASSENGER LOADING LIGHTS -CLOSET LIGHTS
Purpose Training Information Point
The closet lights give light in the closets. You compress the lens to remove it. This gives you access to the light bulb. It is a bayonet-style bulb.
Physical Description
The closet lights are incandescent lights.
The closet lights have these related items:
*
Transformer
*
Light switch.
Location
The lights are in the top, rear corner of the closets. The switch is inside the closet, near the top of the door.
Functional Description
When you push the switch in the closet the light comes on.
A transformer reduces power from 115v ac to 28v ac.
Operation
There is a switch in the upper part of the closet. You push it to make the light come on and go off.
EFFECTIVITY BEJ ALL 33-22-00
Page 30
D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
PASSENGER LOADING LIGHTS -CLOSET LIGHTS
EFFECTIVITY BEJ ALL 33-22-00
Page 31
D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
THIS PAGE IS INTENTIONALLY LEFT BLANK
33-23-00
Page 1 D633W101-BEJ Jan 05/2002
READING LIGHTS -INTRODUCTION
Purpose
The reading lights supply light from above the passenger seats.
Location
The reading lights are in the passenger service units (PSU).
Physical Description
A reading light has these parts:
*
Slot (4)
*
Bezel/lens retainer
*
Lens
*
Tab (4)
*
Lamp
* Lever. You use the lever to lock the light in position. Operation
You operate the reading lights with the switch on the passenger control unit or through the reading light control (not shown) on the CSCP/CACP.
Training Information Point
You can replace the lamps from the front of the PSU. You do not have to lower the PSU to replace the lamps.
To replace a lamp:
*
Compress the bezel/lens retainer
*
Turn it counterclockwise to disconnect it from the slots on the upper part
*
Replace the lamp.
You do the opposite procedure to install the bezel/lens retainer.
EFFECTIVITY BEJ ALL 33-23-00
Page 2
D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
READING LIGHTS -INTRODUCTION
EFFECTIVITY BEJ ALL 33-23-00
Page 3
D633W101-BEJ Jan 05/2002
READING LIGHTS -OPERATION
Operation
You use the reading light control switch on the passenger control units for primary control of the reading lights.
You use the reading lights screen to make all the reading lights in an area come on or go off. You can use the cabin system control panel (CSCP) or a cabin area control panel (CACP).
Touch NORMAL to return control to the switches on the passenger seats.
When the airplane first has power the CSCP/CACP reading lights mode is normal. Primary control is at the passenger control units.
Training Information Point
To make sure all reading lights operate normally, you use the CSCP or a CACP. Touch ON on the reading lights screen and all readings lights should come on. If a light does not come on, the lamp may be defective.
EFFECTIVITY BEJ ALL 33-23-00
Page 4
D633W101-BEJ Sep 05/2002
777 AIRCRAFT MAINTENANCE MANUAL
READING LIGHTS -OPERATION
EFFECTIVITY BEJ ALL 33-23-00
Page 5
D633W101-BEJ Jan 05/2002
