Audio international MCD-102-CH (-x) User manual

7300 Industry Drive, North Little Rock, AR 72117
Phone: [phone] Fax: [phone]
www.audiointl.com
Installation Manual
Model #’s: MCD-102-CH (-x)
MCD-102-RU (-x)
MCD-103-CH (-x)
MCD-102-CP-x
MCD-104-01-x
10 Disc CD Player/Changer
Document #540031

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 2 of 18
Document Revision History
Rev. Level Date Description
IR 12/1997 Initial Release
A 5/1998 ECN #2214
B 4/2000 ECN #4854
Reference Documents
Document # Drawing # Description
N/A 521906 MCD-102-CH-x Outline Drawing
N/A 521887 MCD-102-RU-x Outline Drawing
N/A 521923 MCD-103-CH-x Outline Drawing
N/A 521922 MCD-102-CP-x Outline Drawing
N/A 522146 MCD-104-01-x Outline Drawing
560015 N/A Guide to Operations-MCD
Service Bulletin List
Service
Bulletin # Subject Manual Revision Revision Date
Table of Illustrations
Illustration # Description Page #
1 Reference Drawings 14
PROPRIETARY 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.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 3 of 18
Table of Contents
Section Description Page
1.0 General Information ……………………………………………. 4
1.1 Introduction ……………………………………………………….. 4
1.2 Purpose of the Equipment ………………………………………. 4
1.3 Operational Features …………………………………………….. 5
1.4 Optional Equipment ……………………………………………… 5
2.0 Application ……………………………………………………….. 5
2.1 Introduction ……………………………………………………….. 5
2.2 Data Bus…………………………………………………………… 5
2.3 Potentiometer Setting…………………………………………….. 5
3.0 Installation ……………………………………………………….. 6
3.1 Prior to Installation ……………………………………………….. 6
3.2 Unpacking and Inspection ………………………………………. 6
3.3 Cautions & Warnings …………………………………………….. 7
3.4 Wiring Requirements …………………………………………….. 7
3.5 Physical Characteristics………………………………………….. 8
3.6 Electrical Characteristics…………………………………………. 8
3.7 Mating Connector Information ……………..……………………. 9
3.8 Pinout Assignment Descriptions ………………………………... 10
3.9 Post-Installation Test …………………………………………….. 11
4.0 Troubleshooting Guide………………………………………… 12
4.1 General Troubleshooting Procedures…………………………... 12
4.2 Troubleshooting Chart……………………………………………. 13
5.0 Specifications …………………………………………………… 13
5.1 Unit Specifications-MCD-102-CH (-x), MCD-102-RU (-x)
MCD-103-CH (-x), MCD-104-01-x……….. 13
5.2 Unit Specifications-MCD-102-CP (-x)…………………………... 13
6.0 Reference Drawings ……………………………………………. 14
6.1 MCD-102-CH (-x)…………………………………………………. 14
6.2 MCD-102-RU (-x)…………………………………………………. 15
6.3 MCD-103-CH (-x)…………………………………………………. 16
6.4 MCD-102-CP (-x)…………………………………………………. 17
6.5 MCD-104-01-x…………………………………………………….. 18

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 4 of 18
MODEL #’s: MCD-102-CH (-x)
MCD-102-RU (-x)
MCD-103-RU (-x)
MCD-102-CP (-x)
MCD-104-01-x
10 Disc CD Player/Changer
1.0 General Information
1.1 Introduction
This manual contains information for the installation of Audio International,
Inc. (AI) 10 Disc CD Player/Changer, Model number MCD-102-CH (-x)
control head, model number MCD-102-RU (-x) remote unit, model number
MCD-103-RU (-x) remote unit, model number MCD-103-RU (-x) remote
unit, and model number MCD-102-CP (-x) control panel. Also included in
this manual is model number MCD-104-01-x. This unit combines the
MCD-102-CH (-x) and the MCD-102-RU (-x) units into one compact
enclosure.
The “-x”suffix included in the model number designates the type of
connector utilized. Refer to Section 3.7 for details. Information contained
within this publication includes physical and electrical characteristics with
additional references needed for installation.
1.2 Purpose of the Equipment
The MCD 10 Disc CD Player/Changer is a high quality CD player/changer
specifically designed to meet the special requirements of aircraft use.
This CD player/changer has the capability of storing up to ten, 5.0 inch CD
discs and can be mounted at various angles in the aircraft. Each CD
player/changer includes a control head and a remote unit where the CD’s
are stored.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 5 of 18
1.3 Operational Features
Listed below are key features of the MCD units:
q DO-160C tested
q Operates directly from +28 VDC
q Compact, lightweight package
q Backlit LCD indicator (green) with front panel controls
q Optional infrared remote control capability
q AI proprietary RS-485 digital data bus compatible
q Frequency response of 20 Hz to 20 kHz (+/-1dB)
q Adjustable audio output level of 1V to 5V RMS
q Standard plating options for front bezel
q No cooling requirements
q Specially designed to meet aircraft standards
1.4 Optional Equipment
The front bezel of the units can be customized to match the interior style
of any aircraft. They can be plated or painted to match any interior.
Stacking units are available from AI to house multiple source equipment
units.
Contact your AI representative for details.
2.0 Application
2.1 Introduction
The MCD 10 Disc CD Changer/Player is a compact disc changer system
comprised of the remote unit and a CD changer. The remote unit
modulates the audio signal from the CD changer into a frequency signal
so that it can be received by the aircraft audio.
2.2 Data Bus
The MCD units are designed to interface with other Audio International
equipment via AI’s proprietary RS-485 serial data bus.
2.3 Potentiometer Settings
Right and left output level adjustments are located on the rear of the unit.
The adjustment potentiometers allow the user to adjust the output
between 1 volt and 5 volts RMS. To increase the level, turn the
potentiometer screw clockwise; to decrease turn the screw
counterclockwise.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 6 of 18
3.0 Installation
3.1 Prior to Installation
Prior to installation, the following items should be considered:
3.1.1 During the design and layout of the aircraft cabin, careful
consideration of the location of this module is necessary. Some of
the items to be considered include:
• Space
• Available power supply
• Environmental conditions (temperature, humidity, etc.)
• Length of cable runs
3.1.2 The MCD unit 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.
3.1.3 Mounting screws are required to secure the unit. Refer to
Section 6.0, Reference Drawings, for mounting hole diameters and
configuration.
3.1.4 The CD control head and CD remote units cannot function properly
if they are more than 15 feet away from each other.
3.2 Unpacking and Inspection
Carefully open the packaging and remove the unit. Verify that all
components have been included in the package per the packing list.
Inspect the unit for damage. Retain the packing materials and packing
list.
If damage has occurred during shipping, a claim must be filed with AI
within 24 hours and a “Return Request Authorization Number”must be
obtained from AI. Refer to the front cover of this manual for address and
telephone number of Audio International. 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
materials for storage or reshipment if necessary.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 7 of 18
3.3 Cautions and Warnings
3.3.1 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.
3.3.2 DO NOT connect or disconnect the unit while power is applied.
3.3.3 DO NOT remove any factory-installed screws. Damage to the units
may result and void any warranties.
3.3.4 DO NOT touch the liquid crystal fluid if the LCD case is damaged or
broken. It may be dangerous and cause serious harm. If your
body or clothing come in contact with the fluid, wash immediately
with soap and water.
3.3.4 ESD (Electro Static Discharge) guidelines shall be followed.
3.4 Wiring Requirements
3.4.1 Introduction
The installing agency shall supply and fabricate all external cables
and mating connectors. The length and routing of external cables
must 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.
3.4.2 Power Wires
All power and ground wires shall be 22 AWG (minimum). Power
ground wires shall be grounded within twelve (12) inches of the
unit. All wires shall be in accordance with MIL-W-22759 or
equivalent. Protect power wires with circuit breakers or fuses
located close to the electrical power source bus.
3.4.3 Audio Lines
All audio lines are 24 AWG (minimum) twisted shielded pair with
the cable shields properly grounded. Twisted, shielded cable shall
be in accordance with MIL-W-27500 or equivalent.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 8 of 18
3.4.4 Data Bus Lines
All data bus connections require twisted shielded cable with the
cable shields properly grounded. Twisted, shielded cable must be
in accordance with MIL-W-27500 or equivalent. The wire size for
the conductors in this cable is to be 22 AWG (minimum). The
shield is to be connected wherever a shield pin is provided. Shield
terminations are to be made as close to the connector pin as
possible. In the event shield pins are not provided, the data bus
shield must be terminated per AI’s proprietary RS-485 specification.
All equipment on the RS-485 data bus shall be connected in a
“daisy-chain”configuration. AI’s proprietary RS-485 serial data bus
specification is available upon request.
3.5 Physical Characteristics
3.5.1 Refer to Section 5.0 for unit dimensions.
3.5.2 Refer to Section 6.0 for attachment points.
3.5.3 When mounting the unit, allow sufficient space for mating
connectors.
3.6 Electrical Characteristics
3.6.1 Refer to Section 5.0 for electrical specifications.
3.6.2 Standard configuration requires no infrared strap pins to be
connected. Each different type of AI source equipment can be
configured to accept one of four different sets of infrared codes. To
change the code settings, connect one of the strap pins to the strap
common (never connect more than one strap pin to the strap
common). Three strap pins are available to allow the infrared
codes to be configured.
3.6.3 The MCD-102-CH control head unit utilizes two 15-pin connectors
for electrical connections. P1 connector provides +28 VDC,
left/right audio output, data bus control, infrared input, and four (4)
strapping pins for alternate configuration of infrared digital
command codes. P2 connects to the changer unit MCD-102-RU.
P2 provides +12 VDC power, control lines 1 through 4, and audio
input.
Maximum wire length between the control head and remote unit is
15 feet.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 9 of 18
3.6.4 The MCD-102-RU remote unit utilizes one 15-pin connector for
electrical connections. This connector provides +12 VDC power
input, control lines 1 through 4, and audio output. Up to ten 5-inch
CD disc may be placed in the magazine.
3.6.5 The MCD-103-CH control head is identical to the MCD-102-Ch
control head with an additional pigtail connector. This connector is
to be connected to the MCD-102-CP control panel. P3 of this unit
provides IMH, data input, ground, chip enable, clock, VDD power
and switching through the control panel. The maximum wire length
between the CH and CP units is 15 feet.
3.6.6 The MCD-104-01-x has been designed to combine the control head
unit and the remote unit into one enclosure. The unit requires on
15-pin connector for electrical connections. P1 provides +28 VDC
power, ground, left/right audio output, data bus control, infrared
input, and four strapping pins for alternate configuration of the
infrared digital command codes.
3.7 Mating Connector Information
All wiring harnesses to the unit are supplied and fabricated by the
installing agency.
Model # Pin # Connector Mating Connector
MCD-102-CH-1 P1 RD15M10JV30 RD15F10JVL0
P2 RD15F10JVL0 RD15M10JV30
MCD-102-CH-2 P1 DAMA-15P
D20418-2 Female Screwlock DAMA-15S
P2 DAMA-15S
D20419-18 Male Screwlock DAMA-15P
MCD-102-RU-1 (-3) RD15M10JV30 RD15F10JVL0
MCD-102-RU-2 (-4) DAMA-15P
D20418-2 Female Screwlock DAMA-15S
MCD-102-CP-1 RD9M10JVL0 RD9F10JVL30
MCD-102-CP-2 DEMA-9P
D20418-2 Female Screwlock DEMA-9S
MCD-103-CH-1 P1 RD15M10JV30 RD15F10JVL0
P2 RD15F10JVL0 RD15M10JV30
P3 RD9F10JV30 RD9M10JVL0
MCD-103-CH-2 P1 DAMA-15P
D20418-2 Female Screwlock DAMA15S
P2 DAMA-15S
D20419-18 Male Screwlock DAMA-15P
P3 DEMA-9S
D20419-21 Male Screwlock DEMA-9P
MCD-104-01-1 P1 RD15M10JV30 RD15F10JVL0
MCD-104-01-2 P1 DAMA-15P
D20418-2 Female Screwlock DAMA-15S

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 10 of 18
3.8 Pinout Assignment Descriptions
3.8.1 The MCD-102-CH (-x) pinout is as follows:
P1 P2
Pin # Description Pin # Description
1 +28 VDC Power In 1 +12 VDC Power Output
2 Ground 2 Ground
3 R+ Audio Output 3 Control 1
4 R- Audio Output 4 Control 1
5 L+ Audio Output 5 Control 3
6 L- Audio Output 6 Control 4
7 Data Bus (A) 7 Reserved
8 Data Bus (B) 8 Reserved
9 Infrared Input + 9 R+ Audio Input
10 Infrared Input - 10 R- Audio Input
11 IR Strap 2 11 L+ Audio Input
12 IR Strap 3 12 L- Audio Input
13 IR Strap 4 13 Reserved
14 IR Strap Common 14 Reserved
15 Reserved 15 Reserved
3.8.2 The MCD-103-CH* (-x) pinout is as follows:
P1 P2 P3
Pin # Description Pin # Description Pin # Description
1 +28 VDC Power 1 +12 VDC Out 1 IMH
2 Ground 2 Ground Out 2 DATA
3 R+ Audio Output 3 Control 1 3 Ground
4 R- Audio Output 4 Control 2 4 CE
5 L+ Audio Output 5 Control 3 5 CLK
6 L- Audio Output 6 Control 4 6 VDD
7 Data Bus (A) 7 Reserved 7 Switch
8 Data Bus (B) 8 Reserved 8 Reserved
9 Infrared Input + 9 R+ Audio Input 9 Reserved
10 Infrared Input - 10 R- Audio Input
11 IR Strap 2 11 L+ Audio Input
12 IR Strap 3 12 L- Audio Input
13 IR Strap 4 13 Reserved
14 IR Strap Common 14 Reserved
15 Reserved 15 Reserved
*The MCD-103-CH (-x) utilizes the MCD-102-RU (-x) remote unit.
3.8.3 The MCD-102-CP (-x) remote control panel pinout is as follows:
Pin # Description
1 IMH
2 Data
3 Shield (Ground)
4 CE
5 CLK
6 VDD
7 Switch
8 Reserved
9 Reserved

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 11 of 18
3.8.4 The MCD-102-RU (-x) remote unit pinout is as follows:
Pin # Description
1 +12 VDC Power Input
2 Ground Input
3 Control 1
4 Control 2
5 Control 3
6 Control 4
7 Reserved
8 Reserved
9 R+ Audio Output
10 R- Audio Output
11 L+ Audio Output
12 L- Audio Output
13 Reserved
14 Reserved
15 Reserved
3.8.5 The MCD-104-01-x pinout is as follows:
Pin # Description
1 +28 VDC Power In
2 Ground
3 R+ Audio Output
4 R- Audio Output
5 L+ Audio Output
6 L- Audio Output
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
3.9 Post-Installation Test
3.9.1 With the aircraft power “ON”, apply power to the CD control head
and remote units (if applicable). Load the CD remote unit with one
to ten 5-inch CD’s. Press the PL/ST (play/stop) button on the
control head to start playback.
3.9.2 Select a CD with the DISC ADV (disc advance) or DISC REV (disc
reverse) buttons. Select a specific track of the CD and press the
TRACK ADV (track advance) or TRACK REV (track reverse)
buttons. The LCD display will indicate the CD number and track
that has been selected for playback as well as the elapsed time.
3.9.3 Press the PL/ST button on the control head. Press EJECT on the
remote unit. Remove the CD’s from the CD magazine. If there is a
diagnostic error in the CD changer system, the LCD indicator will

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 12 of 18
display several different error codes. Refer to Section 4.0 for a
definition of these error codes.
4.0 Troubleshooting Guide
4.1 General Troubleshooting Procedures
Many problems can be isolated with the following general techniques:
• To verify power to the unit, recheck +28 VDC 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.
4.2 Troubleshooting Chart
Problem Possible Cause Solution
Sound skips CD remote unit is incorrectly
installed
CD is dirty or defective
Reinstall unit
Clean or replace CD
Disc magazine will
not lock in the
changer
CD magazine does not have
proper loading orientation Remove the disc magazine, press EJECT and reinsert
magazine until it is locked
securely into place
No sound Power has not been
connected
Power to external equipment
is “off”
External equipment
incorrectly connected
Verify +28 VDC power is
present
Verify source equipment is
“on”and operational. Verify
CD remote unit and control
unit are “on”
Verify all connections per unit
instructions
Poor sound quality Audio controls improperly
adjusted Adjust the volume level
Error code E-01 Disc magazine not inserted in
the CD remote unit Insert the disc magazine with CD’s into the CD changer
Error code E-02 No disc is inserted in the
magazine Remove magazine and insert a CD
Error code E-04 CD is dirty or incorrectly
oriented Clean CD, reinsert correctly
Error code E-99 CD changer cannot be
operated due to difficulties Press RESET on the CD remote unit

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 13 of 18
5.0 Specifications
5.1 Unit Specifications –MCD-102-CH (-x)
MCD-102-RU (-x)
MCD-103-CH (-x)
MCD-104-01-x
Physical Specifications
Housing Aluminum
Dimensions & Weight
MCD-102-CH (-x) &
MCD-103-CH (-x) Length 7.89”/ 20.04cm Width w/bezel 7.38”/ 18.75cm
Height 2.30”/ 5.84cm
Weight 2.06 lbs. / 0.93 kg
MCD-102-RU (-x) Length 7.30”/ 18.54cm
Width w/bracket 12.63”/ 32.00cm
Height 3.60”/ 9.14cm
Weight 5.25 lbs. / 2.38 kg
MCD-104-01-x Length 7.97”/ 20.24cm
Width w/bezel 14.00”/ 35.56cm
Height 4.22”/ 10.72cm
Weight 9.25 lbs. / 4.20 kg
Electrical Specifications
Power 1A Maximum @ +28 VDC
Operating Voltage Range +18 VDC - +30 VDC
Data Bus Type AI Proprietary RS-485
Audio Frequency Response 20 Hz to 20 kHz
Audio Output 1 V to 5 V RMS (2K-ohms minimum load)
Factory preset at 2 V RMS
Audio S/N 93 dB (nominal)
Dynamic Range 93 dB
Channel Separation 85 dB
Infrared Input +5 VDC Digital Logic Level
5.2 Unit Specifications –MCD-102-CP (-x)
Physical Specifications
MCD-102-CP (-x) Length 6.00”/ 15.24cm
Width 1.50”/ 3.81cm
Depth 0.69”/ 1.75cm
Weight 0.33 lbs. / 0.15 kg
Electrical Specifications
Power 130 mA @ +10 VDC
Wire Bundle 12 inches (+/- 1”)

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 14 of 18
6.0 Reference Drawings
6.1 The following diagrams show the MCD-102-CH (-x) control head with unit
dimensions and attachment points. All dimensions are shown in inches.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 15 of 18
6.2 The following diagrams show the MCD-102-RU (-x) remote unit with unit
dimensions and attachment points. All dimensions are shown in inches.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 16 of 18
6.3 The following diagrams show the MCD-103-CH (-x) control head unit with
unit dimensions. All dimensions are shown in inches.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 17 of 18
6.4 The following diagrams show the MCD-102-CP (-x) control head unit with
unit dimensions. All dimensions are shown in inches.

MCD-102-CH (-x), MCD-102-RU (-x)
Audio International, Inc. MCD-103-CH (-x), MCD-102-CP (-x), & MCD-104-01-x
Installation Manual
Document #540031, Rev. B, 4/2000 Page 18 of 18
6.5 The following diagrams show the MCD-104-01-x unit with dimensions. All
dimensions are shown in inches.