Audio international SCD-012-01-x User manual

7300 Industry Drive, North Little Rock, AR 72117
Phone: [phone] Fax: [phone]
www.audiointl.com
Installation and Operation
Manual
SCD-012-01-x
Single Compact Disc Player
Document # 540106
a DeCrane Aircraft Company

Audio International, Inc. SCD-012-01-x Installation & Operation Manual
Document # 540106, Rev B, 06/2001 Page 1 of 16
Document Revision History
Rev. Level Date Description
IR 4/1998 Initial Release
A 10/2000 Overall Update to conform with redesign
B 06/2001 Corrected REPEAT MODE button references
Reference Documents
Document # Description
522143 Rev B SCD-012-01-x Outline Drawing
Service Bulletin List
Service
Bulletin # Subject Manual Revision Revision Date
Table of Illustrations
Section # Illustration # Description Page #
I 6.2 Typical Application 6
II 9.0 Reference Drawings 14
III 1.0 Front Panel 15
PROPRIETARY INFORMATION NOTICE: Despite any other copyright notice, this document
and information disclosed herein contains confidential, proprietary designs owned by Audio
International, Inc. Neither this document nor the data contained herein shall be reproduced,
used, or disclosed to anyone without the written authorization of Audio International, Inc.

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Table of Contents
Section Description Page
I General Information………………………………………….. 4
1.0 Introduction……………………………………………………... 4
2.0 Purpose of the Equipment……………………………………. 4
3.0 Operational Features………………………………………….. 4
4.0 Optional Equipment……………………………………………. 5
5.0 Technical Specifications………………………………………. 5
6.0 Application……………………………………………………… 5
7.0 CD Player Care………………………………………………… 7
8.0 Handling Compact Discs……………………………………… 7
II Installation…….………………………………………………. 8
1.0 Prior to Installation…………………………………………….. 8
2.0 Unpacking and Inspection…………………………………….. 8
3.0 Cautions & Warnings………………………………………….. 9
4.0 Wiring Requirements………………………………………….. 10
5.0 Physical Characteristics………………………………………. 10
6.0 Electrical Characteristics……………………………………… 11
7.0 Post-Installation Test………………………………………….. 12
8.0 Troubleshooting Guide………………………………………... 12
9.0 Reference Drawings…………………………………………… 14
III Operation….…………………………………………………… 15
1.0 General Information…………………………………………… 15
2.0 To Load a CD into the CD Slot……………………………….. 15
3.0 Operating Instructions…………………………………………. 16

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SCD-012-01-x
Single Compact Disc Player

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Document # 540106, Rev B, 06/2001 Page 4 of 16
SECTION I – GENERAL INFORMATION
1.0 Introduction
This manual contains information for the proper installation and operation of
Audio International’s (AI) Single Compact Disc Player, SCD-012-01-x. The “-x” in
the model number designates the type of connector utilized; “-1” = Positronic and
“-2” = D-Subminiature. Also included are mechanical and electrical
characteristics of the unit.
2.0 Purpose of the Equipment
2.1 The SCD-012-01-x is a compact disc player specifically designed to meet
the special requirements of aircraft use. This unit allows complete control
of track selection. The unit has a high quality output and a full range
frequency response of 20Hz to 20kHz (±1 db). A removable cover bezel
allows customization of the unit to other décor.
2.2 The SCD-012-01-x can be mounted in a cabinet or bulkhead. A unique
strapping feature allows up to four (4) similar devices to be used in the
same system at the same time while maintaining independent control.
3.0 Operational Features
Key features of the SCD-012-01-x:
! DO-160C tested
! Operates directly from +28 VDC
! Digital display
! Gain potentiometers for audio output level control
! Standard “line out” audio output (no volume control)
! Front panel controls
! Full range frequency response of 20 Hz to 20 kHz (±1 db)
! AI proprietary RS-485 serial data bus compatible
! Optional infrared remote controllable
! Adjustable audio output level of 1 to 5VRMS
! Standard plating options for front bezel
! No cooling requirements
! Easy to mount and connect
! Compact, lightweight package
! Allows complete control of track selection

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4.0 Optional Equipment
The SCD-012-01-x can be optionally controlled by infrared remote or AI’s touch
screen panel. Digital codes allow the unit to interface with an infrared handheld
remote via an infrared receiver, IFR-9A or IFR-485. Multiple units can be
controlled independently using available programming pins. Playback options
with remote or touch screen include stop/eject, fast-forward, rewind, track repeat,
and pause.
The optional cover bezel may be customized to match the interior style of any
aircraft. This option includes plating or painting to match aircraft décor.
Contact your AI representative for details.
5.0 Technical Specifications
Physical Specifications
Housing Aluminum
Weight 4.0 lb / 1.81 kg
Dimensions
(lxwxh) 7.84” x 7.38” x 2.30” 19.91 cm x 18.75 cm x 5.84 cm
6.0 Application
6.1 Introduction
The SCD-012-01-x is a single compact disc player that will accept a
+5 VDC infrared digital input and AI’s proprietary RS-485 two-wire serial
data bus input.

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6.2 Typical Application
6.2.1 This system is fully compatible with Audio International’s proprietary
RS-485 digital data bus system. It can be configured for IR remote
control utilizing AI’s remote control unit AI-RC1-17xxxx and
IFR-485.
6.2.2 The unit can also be configured for IR remote control utilizing AI’s
remote control unit AI-RC1-17xxxx and IFR-9A. This following
configuration utilizes a +5 VDC digital logic level for activation of
infrared commands.
6.2.3 The unit can also be configured for Touch Screen or remote panel
control (i.e. entertainment control panels). The panels are on AI’s
proprietary RS-485 digital data bus system and configured to
control the operational features of the SCD-012-01-x.

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7.0 CD Player Care
Cleaning the CD Player
• If the front panel gets dirty, turn off the power and wipe the panel with a
dry silicon cloth or soft cloth.
• As dust tends to accumulate in the CD slot, clean it every once in a
while. Your CD’s can get scratched if you put them in a dusty CD slot.
8.0 Handling Compact Discs
Playing a CD that is dirty, scratched, or warped can cause the sound to
skip and the unit to operate incorrectly resulting in worsened sound
quality. Take the following precautions to prevent your CDs from getting
scratched or damaged.
• Do not touch the recorded side of the CD (the side opposite the label)
when holding the CD.
• Do not stick tape on either side of the CD.
• Do not store CDs in areas exposed to direct sunlight.
• Remove CDs from the unit when not listening to them.
• If a CD has gotten dirty, wipe it off gently using a commercially
available cleaning cloth or a soft cotton cloth, starting from the center
of the disc and moving outward. Do not clean CDs with conventional
record cleaners, anti-static formulas, or chemicals such as paint
thinner or benzene.
• When playing a new CD for the first time, check that no burrs are stuck
to the perimeter of the disc or in the central hole. CDs with burrs stuck
on them may not load properly or may skip while playing. Remove
burrs using a ballpoint pen or a similar utensil.
• Do not load 3-inch CDs in the CD slot. If you try to load a 3-inch CD
with its adapter into the unit, the adapter might separate from the CD
and damage the unit.

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SECTION II - INSTALLATION
1.0 Prior to Installation
1.1 During the design and layout of the aircraft cabin, careful consideration of
the location of this and all other audio/visual modules is necessary. Some
of the items to be considered include:
• Space
• Proximity to other devices (i.e. source equipment)
• Available power supply
• Length of cable runs
• Environmental conditions (temperature, humidity, etc.)
• Location of other aircraft systems (i.e. oxygen delivery)
• Access for service repair (if applicable)
• Convenience for user interface (if applicable)
1.2 The SCD-012-01-x shall be installed to conform to the standards
designated by the customer, installing agency, and existing conditions as
to the unit location and type of installation.
1.3 Mounting screws are required to secure the unit. The unit shall be
mounted in a horizontal position (not on unit’s side). Long low-level audio
runs may introduce noise into the audio signal. Refer to Section II, 9.0 for
mounting hole diameters and configurations.
1.4 All headphone amplifiers and line level amplifiers should be located no
more than three (3) feet away from the SCD-012-01-x.
1.5 Avoid installing the unit where it will be exposed to excessive heat,
moisture, splashing liquids, dusty areas, direct sunlight, or angled/inclined
installations.
1.6 A minimum of five (5) inches clearance is required in front of the CD slot.
When the CD is ejected, it will project approximately 2.25 (5.72 cm)
inches.
2.0 Unpacking and Inspection
2.1 Carefully open the packaging and remove the SCD-012-01-x. Verify that
all components have been included in the package per the packing list.
Inspect the unit for shipping damage.

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2.2 If damage has occurred during shipping, a claim should be filed with Audio
International WITHIN 24 hours and a Return Request Authorization
Number shall be obtained from AI. Refer to the front cover of this manual
for address and telephone number of Audio International, Inc. Repackage
the unit in its original packaging materials and return it to AI following
instructions given by the AI representative. If no return is necessary,
retain the packing list and the packing materials for storage.
3.0 Cautions & Warnings
3.1 It is important to do a pin-to-pin power and ground check on all
connectors. Ensure that power and ground are applied only where
specified. Damage to the unit may result if power or ground is applied to
the wrong points.
3.2 DO NOT connect or disconnect the unit while power is applied.
3.3 DO NOT drop the unit or subject it to strong shock. The unit contains
glass parts that may break or crack.
3.4 DO NOT touch the liquid crystal fluid if the LCD is damaged or broken. If
the fluid from the LCD display contacts your body or clothing, wash it off
with soap immediately.
3.5 DO NOT use commercially available CD accessories that can be loaded
into the CD slot (stabilizers, protective sheets, CD cleaning discs, etc.).
They can cause the unit to malfunction.
3.6 DO NOT use dirty CD’s or CD’s colored on the data side. If you try to play
CD’s that are colored on the recorded side (opposite the label), or CD’s
that are dirty, they may fail to slide in or out. Also, do not put tape on CD’s
and attempt to insert into the unit. This could cause failure or damage to
the unit.
3.7 NO scheduled maintenance is required to ensure continued airworthiness.
3.8 ESD (Electro Static Discharge) guidelines shall be followed.

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4.0 Wiring Requirements
4.1 Introduction
The installing agency must supply and fabricate all external cables. The
length and routing of external cables should be carefully studied and
planned before attempting installation of the equipment. Allow adequate
space for installation of cable and connectors. Avoid sharp bends and
placing cables near aircraft control cables. Maintain a minimum clearance
of three (3) inches from any control cable. If wiring is run parallel to
combustible fluid or oxygen lines, maintain a separation of six (6) inches
between the lines.
4.2 Power Wires
All power and ground wires shall be 22 AWG, MINIMUM. Power ground
wires shall be grounded within twelve inches of the unit. All wires shall be
in accordance with the standard military specification of MIL-W-22759 or
equivalent. Twisted, shielded cable shall be in accordance with the
standard military specification of MIL-DTL-27500 or equivalent. Protect
power wires with circuit breakers or fuses located close to the electrical
power source bus.
4.3 AI’s Proprietary RS-485 Data Bus
4.3.1 The SCD-012-01-x is designed to interface with other Audio
International equipment via AI’s proprietary RS-485 serial data bus.
The data bus shall be implemented using a twisted shielded pair
cable in accordance with the standard military specification of
MIL-DTL-27500 or equivalent. The wire size for the conductors in
this cable shall be 22 AWG, MINIMUM. The shield shall be
connected everywhere a shield pin is provided. Shield terminations
shall be made as close to the connector pin as possible.
4.3.2 All modules on AI’s proprietary RS-485 data bus shall be connected
in a ‘daisy-chain’ configuration. AI’s proprietary RS-485 data bus
specification is available upon request.
5.0 Physical Characteristics
5.1 Refer to Section 9.0 for unit dimensions and mounting hole sizes.
5.2 When mounting the unit, allow sufficient space for mating connectors.

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5.3 DO NOT insert any screw more than 0.25 inch into the case. Mounting
holes on the unit provide multiple anchoring points. These threaded
inserts do not have physical stops. Care should be taken to NOT
penetrate the outer casing with any screw more than 0.25 inch. This could
result in serious damage to the CD player.
6.0 Electrical Characteristics
6.1 Electrical Specifications:
Electrical Power 650 mA at +28 VDC (Playing)
750 mA at +28 VDC (Ejecting)
Frequency Response 20 Hz to 20 kHz (±1 dB)
Audio Output 1to5V
RMS (adjustable)
1kΩ, MINIMUM, load;
Factory preset to 2 VRMS
Stereo Channel
Separation <85dB
Backlighting / Digital
Display Green
IR Input Voltage +5 VDC, Digital Logic Level
Data Bus Type AI Proprietary RS-485
6.2 The SCD-012-01-x utilizes one (1) 15-pin connector for electrical
connections. This connector provides power, left/right audio output, data
bus control, infrared input, and four infrared strapping pins for alternate
configuration of infrared digital command codes.
Standard configuration requires no infrared strap pins to be connected.
Each different type of AI source equipment can be configured to accept
one (1) of four (4) different sets of infrared codes. To change the code
settings, connect one (1) of the strap pins to the strap common (never
connect more than one (1) strap pin to the strap common). Three (3)
strap pins are available to allow the infrared codes to be configured.
6.3 Mating Connector Information
Model # Mating Connector
SCD-012-01-1 RD15F10JVL0
SCD-012-01-2 DAMA-15S D20418-2 Female
Screwlock

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6.4 Pinout Assignment and Descriptions
Pin # Description
1 + 28 VDC Power
2 Power Ground
3 R+ Audio Output
4R-AudioOutput
5 L+ Audio Output
6L-AudioOutput
7 Data Bus (A)
8 Data Bus (B)
9 Infrared Input +
10 Infrared Input -
11 IR Strap 2
12 IR Strap 3
13 IR Strap 4
14 IR Strap Common
15 Reserved
7.0 Post-Installation Test
Verify +28 VDC power has been connected to the unit. The audio signal output
of the unit is generally connected to cabin speaker systems in addition to
headphone locations. Verify all connections before supplying power to the unit.
8.0 Troubleshooting Guide
8.1 General Troubleshooting Procedures
Many problems can be isolated with the following general techniques:
• To verify power to the unit, recheck +28 VDC power is applied to
the proper pins on the unit. Use a voltmeter to verify correct level.
• Reset by removing power from the unit for at least one minute and
reapply power. Verify the problem still exists.
• Recheck all connections to the unit for security. Check all harness
runs for possible pinching. Recheck all pinouts for application
accuracy.
• To check data bus integrity, utilizing a voltmeter, “Oscilloscope” or
other voltage instrument, verify proper input voltage on the data bus
pins.
• The RS-485 data bus is a bi-directional bus that does not have a
“bus controller”. The bus uses a differential digital signal that will
transmit only when commands are entered via switch selection or
other system synchronizing commands. The “A” leg of the bus is
HI and the “B” leg LOW.

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8.2 Troubleshooting Chart
Problem Possible Cause Solution
No sound # SCD-012-01-x is
improperly
installed
# No audio material
in source unit
• Verify +28 VDC power and audio
input is present
• Insert audio material in source
unit
No power # Circuit breaker
has opened • Reset circuit breaker
CD cannot be loaded # CD is already in
slot • Eject CD in unit and load another
CD into the slot
CD ejects when
loaded # CD is dirty
# CD is loaded
upside down
• CleanCDwithsoftcloth
• Load CD with label side up
Poor sound quality # CD is scratched
or dirty • Clean CD with soft cloth if dirty
• Discard CD if scratched
Cannot control after
power down # CD is loaded in slot and power
has been
removed
• Upon power up, reject the CD and
reinsert. Operation should return
to normal.

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9.0 Reference Drawings
The following diagrams show the unit dimensions, mounting locations, and
connector locations for the SCD-012-01-x.

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SECTION III – OPERATION
1.0 General Information
1.1 The SCD-012-01-x can be operated via front panel ‘buttons’ or optionally
controlled by infrared remote or AI’s touch screen panel. Digital codes
allow the unit to interface with an infrared handheld remote via an infrared
receiver, IFR-9A or IFR-485. Multiple units can be controlled
independently using available programming pins.
1.2 Playback options with front ‘button’ control, remote or touch screen include
stop/eject, fast-forward, rewind, track repeat, and pause.
ILLUSTRATION OF SCD-012-01-x FRONT PANEL
2.0 To Load a CD into the CD Slot
2.1 Insert a CD into the CD slot. The SCD-012-01-x will gently ‘pull’ the CD
into the PLAY position. Power turns on automatically when the CD is
inserted into the CD slot.
2.2 The digital display will indicate ‘CD-IN’ and the unit will begin playing the
inserted CD.

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3.0 Operating Instructions
3.1 Button – Press the (Stop/Eject) button to stop CD playback. Press
the button a second time to eject the CD from the CD slot.
3.2 Button - Press the (play/pause) button to play a CD. Press the
button a second time to pause the CD in playback. The button can be
pressed again to return to playback.
3.3 Button – Press the (reverse track) button to locate the beginning of
the previous track.
3.4 Button – Press the (advance track) button to locate the beginning of
the next track.
3.5 Button – Press the (Repeat Mode) to toggle between off, track
repeat and CD repeat. The digital display will indicate the function
selected.
3.6 When the end of a CD is reached, the CD will automatically repeat the first
track and repeat the CD until the STOP/EJECT button is pressed.
3.7 If power is removed from the unit while a CD is playing, upon power up,
the CD will eject and must be reinserted into the CD slot.