(2)
Control Elements
The CD A/R itself has the subsequent operation controls:
-
A monitor jacks (monaural headset) for sound check
-
A channel up and down pushbutton for channel selection
-
A volume up and down pushbutton for volume selection
-
A two-digit channel number display
-Four disk drive diaplays.
C. Wall Disconnect Box (Ref. Fig. 009A, 010A)
(1)
General The Wall Disconnect Box (WDB) 50MK gives a disconnect point for the data busses of the IFE. It supplies line amplification for the data busses. The busses from the MM are fed to the WDBs on each side of the aircraft.
(2)
Electrical connection(s)
The WDB has four connections. The connections are:
(a)
J1 (from MM or previous WDB)
-Power
-Data input and output
(b)
J2 (to SEB)
-Power
-Data input and output
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-Power
-Data input and output
(d) J4 (to next WDB)
-Power
-Data input and output
D. Seat Electronic Box
(Ref. Fig. 011A, 012A)
(1)
General The SEB only changes the digital signals of the passenger selected channel back to the original analog form. These signals are transmitted to the PCU. Each SEB supplies up to 3 PCU.
(2)
Transmission from/to SEB
The SEB transmits:
-
The 3,3VDC to the PCU
-
The 20V to the WDB
-
The music signal to the PCU
-
The video sound signal to the PCU.
E. Passenger Control Unit R (Ref. Fig. 013C)
(1)
General The Passenger Control Units (PCU) 201MK, 202MK and 200MK with the Remote Jack Units (RJU) 204MK are the primary interfaces between the passengers and the IFE. They are installed in the armrest of each passenger seat.
(2)
Control Elements
Each PCU has:
-A LED display (2 digit LED indicates the channel select),
-
Up/Down pushbutton switch (channel select),
-
Up/Down pushbutton switch (volume control),
-
An acoustic transducer that supplies pneumatic headset connectors and/or
-
An electrical headset jack.
R **ON A/C 051-099, 106-149, 201-299, 301-399,
7. System Operation
________________
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R **ON A/C 051-099, 106-149, 201-299,
The Passenger Entertainment System (PES) is energized during normal operation from the audio module (the PES membrane switch) on the FAP 120RH. The operation procedures are as follows:
A. Control Keys
(1) The PES section of the audio module has a PES pushbutton switch. When the PES membrane switch is pushed the system energizes.
(2) The PCUs have subsequent control keys. The control keys control PES functions. The PCU control keys are: - the VOLUME membrane switch with an arrow tip up symbol, when that membrane switch is pushed, the volume increases, - the VOLUME membrane switch with an arrow tip down symbol, when that membrane switch is pushed, the volume decreases, - the CHANNEL membrane switch with an arrow tip up symbol, when that membrane switch is pushed, the channel number increases, - the CHANNEL membrane switch with an arrow tip down symbol, when that membrane switch is pushed, the channel number decreases.
B. Not Applicable
R **ON A/C 051-099, 201-210,
(Ref. Fig. 001)
R **ON A/C 106-149, 211-299,
(Ref. Fig. 001A)
R **ON A/C 051-099, 106-149, 201-299,
C. The boarding music section (BGM Channel) has:
- an LED display (a row of LEDs indicate volume control), - an ON/OFF membrane switch, - a SEL membrane switch (channel select), - a ( - ) membrane switch (volume decrease), - a ( + ) membrane switch (volume increase).
Boarding music control keys are as follows:
(1) ON/OFF When the ON/OFF membrane switch is pushed, the light in the membrane switch comes on. The channel 1 is automatically displayed on the BGM channel display. When the ON/OFF membrane switch is pushed again, the light goes off.
(2) SEL When the SEL membrane switch is pushed, the system selects one of the available channels. These are displayed in a numerical ascending code (four channels in the mono mode, two in the stereo mode).
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