RA DIO CON S OLE P RODUCTS MARC-15 Broadcast Console family Technical Manual January 20, 2015 ARRAKIS a d va n c e d r a d io 1.
IN TRODUCTION Thank you from Arrakis Systems inc. Thank you for purchasing this product by Arrakis Systems inc. Our company has provided professional audio equipment to the broadcast, commercial audio, and consumer audio markets for more than 30 years. Our products are sold worldwide and are well known for leading edge technology, quality, and reliability.
S A FETY Safety Instructions 1. Read All Instructions. All safety and operating instructions must be read before operating the product. 2. Retain All Instructions. All safety and operating instructions must be retained for future reference. 3. Heed All Warnings. All warnings on the product and those listed in the operating instructions must be adhered to. 4. Follow All Instructions. All operating and product usage instructions must be followed. 5. Heat.
S A FETY Hazard / Warning Label Identification C AU T I O N RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING: SHOCK HAZARD - DO NOT OPEN AVIS: RISQUE DE CHOC ELECTRIQUE - NE PAS OUVRIR CAUTION : TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE ANY COVER OR PANEL. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. WARNING : TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THE CONSOLE TO RAIN OR MOISTURE.
W A RRA N TY Warranty This console carries a manufacturer‘s warranty subject to the following guidelines and limitations: A) Except as expressly excluded herein, Arrakis Systems inc. (“Seller”) warrants equipment of its own manufacture against faulty workmanship or the use of defective materials for a period of one (1) year from date of shipment to Buyer.
S OFTW A RE Software End User License Agreement This product contains software licensed from Arrakis Systems inc. and possibly from other software companies. Ownership of this product constitutes acceptance of this agreement. 1- This product contains intellectual property (i.e. software programs) that are licensed for use by the end user customer (hereinafter “End user”).
Table of Contents Section One Introduction Section Two Product Description Section Three Operation Instructions Section Four Installation Instructions Getting Started: Mainframe: Power Supply: Cabling Gorunding Output Module wiring: Input Module wiring: PC Setup for USB module: ARC-16SW: Basic Calibration: Output Board Calibration: Module Jumper setup: Summary wiring pages: Balanced & Unbalanced: Ground loops 4.1 - 4.4 4.5 4.6 4.7 4.8 4.9 - 4.14 4.15 - 4.19 4.20 4.21 - 4.23 4.24 4.25 4.26 4.27 - 4.
P RODUCT DES CRIP TION PRODUCT DESCRIPTION 2.
P RODUCT DES CRIP TION Product Description MARC-15 Modular Advanced Radio Console (MARC) Three stereo Program output mixes (with mono mixdowns) plus Monitor, Headphone, and Cue systems 15 channel modular mainframe supports many types of input modules (all with LED illumination) High performance mic modules with 48V phantom power (A/B inputs), (turret control logic & tally for ‘A’ inputs) Balanced, stereo line level input modules (A/B inputs), (isolated relay source logic for ‘A’ inputs) Powerful Phone mo
P RODUCT DES CRIP TION The modular mainframe... The MARC-15 is available in a single 15 channel mainframe. The mainframe is a fully enclosed metal cabinet with a rear hinging meter panel. The power supply is an external, autosensing 110-220VAC module. The meter panel contains meters for all three buses, a digital timer, and a built in cue/talkback speaker.
P RODUCT DES CRIP TION Many modules to choose from... The ‘Output’ module comes standard with the console. The 8, 12, and 15 channel base models can then be configured with any combination of input modules that you choose. There can be a maximum of one ‘PC USB’ module per PC, two ‘Phone modules’, and one ‘Studio monitor’ module per mainframe. Any number of mic or stereo line modules can be added until the 15 open modules in the mainframe are full.
P RODUCT DES CRIP TION Software features the optional PC USB module contains a built-in, Windows compatible, USB sound card for USB connection to a PC. (maximum of one module per PC) ‘Free’ DHD-Live software for ‘Live On Air’ with the MARC-15 Arrakis DHD-Live software will recognize the PC-USB module in the MARC-15 console and operate in the ‘free’ mode to provide ’Live On Air’ features that are ideal for broadcast, internet, or podcast style radio applications.
P RODUCT DES CRIP TION Technical features The MARC-15 console by Arrakis Systems inc. is the culmination of > 25 years of leadership in the design of analog and digital Radio consoles and > 15 years as the leader in hard disk automation for Radio.
P RODUCT DES CRIP TION Electronic Specifications Stereo Line Input Freq ResponseS/NTHDCMRRMax InputMono Mic Input Freq ResponseEINTHDCMRRImpedances Mic InputLine InputOutputsSystem Max OutputStereo SeparationPgm to Aud XTalkCue to Pgm XTalkOn Air Light Logic: +(-).5dB 20-20kHz -82dB typ, +8dBu in, +8 dBu out .01% typ, +8dBu in, +8 dBu out -75dB typ 1kHz +23dBu, balanced +(-).5dB 20-20kHz -115dBu typ, -50dBu in, +8 dBu out .
P RODUCT DES CRIP TION Physical Specifications Arrakis Systems inc.
OP ERA TIN G IN S TRUCTION S OPERATING INSTRUCTIONS 3.
OP ERA TIN G IN S TRUCTION S Basic Operation The MARC-15 console is designed to be very easy to use. The three sets of VU meters follow the Program and Audition and Utility buses. The phone system is very easy to use for off line talking to the caller as well as supporting a Live call in show or Off-line contest call application.
OP ERA TIN G IN S TRUCTION S Mono mic level Input Modules A/B INPUT SELECTOR The module can select between two microphones. The ‘A’ input is activated when the button is NOT lit. The ‘B’ input is active when the module is lit. CHANNEL ON AND OFF To turn a channel on, simply push the green ON switch at the bottom of the fader. When the channel is on, the switch will be lighted. To turn the channel off, simply push the yellow OFF button.
OP ERA TIN G IN S TRUCTION S Stereo Line Level Input Module A/B INPUT SELECTOR The module can select between two stereo input sources. The ‘A’ input is activated when the button is NOT lit. The ‘B’ input is active when the module is lit. CHANNEL ON AND OFF To turn a channel on, simply push the red ON switch at the bottom of the fader. When the channel is on, the switch will be lighted. To turn the channel off, simply push the yellow OFF button.
OP ERA TIN G IN S TRUCTION S The PC-USB input Module CHANNEL ON AND OFF To turn a channel on, simply push the red ON switch at the bottom of the fader. When the channel is on, the switch will be lighted. To turn the channel off, simply push the yellow OFF button. Record button Program Bus Assignment CHANNEL ON AND OFF LOGIC When the module is controlling Arrakis Xtreme software, the channel on will start the playlist on the PC to playing. When the channel is turned off, the playlist will stop playing.
OP ERA TIN G IN S TRUCTION S The Telephone Input Module OFF-LINE ASSIGNMENT SWITCH This switch will connect the control room mic to the caller and feed the caller to the console cue system. The caller will be automatically removed from the Pgm, Aud, and Utlk buses so he will not be on air. This allows the caller and the console operator to speak ‘off-line’. CHANNEL ON AND OFF To turn a channel on, simply push the red ON switch at the bottom of the fader. When the channel is on, the switch will be lighted.
OP ERA TIN G IN S TRUCTION S The Control Room Monitor system The Control Room Monitor system is the main audio monitoring system for the studio. It features an input selector switch and a volume level control. The output of the monitor system is connected to an external audio power amplifier and speakers. The level control on the external amplifier should be set for the maximum sound level desired in the studio.
OP ERA TIN G IN S TRUCTION S The Headphone system The Headphone (earphone) system in the MARC-15 console is provided so that audio can be listened to while the microphone is active and the monitor speakers are muted. The Headphone system receives the same audio feed as the Monitor system but does not mute when the microphone channel is turned on.
OP ERA TIN G IN S TRUCTION S The Cue system The cue system is designed for monitoring an audio source without placing it on air. This feature is useful for listening to a network feed before bringing it to air, listening to a CD to be certain it is the correct song, etc. ACTIVATING CUE To activate cue, click on the CUE button on an input source channel. To exit the cue mode, click on the CUE button again.
OP ERA TIN G IN S TRUCTION S The Timer The MARC-15 console features a 60 minute up timer. The timer is controlled by four buttons on the output module. MANUAL MODE When the Auto button light is lit, the timer is in the manual mode and will respond to the Start, Stop, and Reset buttons. The manual mode is active when the console is first powered up. AUTO MODE When the Auto button is NOT lit, the timer is in auto mode.
OP ERA TIN G IN S TRUCTION S The VU meters The MARC-15 console features a set of VU meters for all of the console mixing buses (Pgm and Aud and UTL). This simplifies operation and reduces operator error. Program Meters Arrakis Systems inc. Program Audition Meters Audition 3.
IN S TA LLA TION IN S TRUCTION S INSTALLATION INSTRUCTIONS Getting Started: Mainframe: Power Supply: Cabling Gorunding Output Module wiring: Input Module wiring: PC Setup for USB module: ARC-16SW: Basic Calibration: Output Board Calibration: Module Jumper setup: Summary wiring pages: Balanced & Unbalanced: Ground loops 4.0 4.1 - 4.4 4.5 4.6 4.7 4.8 4.9 - 4.14 4.15 - 4.19 4.20 4.21 - 4.23 4.24 4.25 4.26 4.27 - 4.28 4.29 - 4.33 4.34 - 4.
IN S TA LLA TION IN S TRUCTION S Basic Description Standard cables (supplied) Fast & easy installation All IO is by World standard RJ45 connectors Cables with RJ45s on one end are supplied standard with the MARC-15 Optional cables are available with XLR and RCA on one end for convenience The MARC-15 is quick and easy to install. The meter panel hinges up and back to provide fast access to the RJ45 IO connectors and trimpots.
IN S TA LLA TION IN S TRUCTION S Unpacking a) PACKING SLIPS- do you have everything? Check the Packing Slips that come with the shipment to be certain that all packages have been received. b) CHECK FOR DAMAGE Check all packages and equipment for damage IMMEDIATELY upon receipt. If damage is found, contact Arrakis Systems immediately to report the damage. (refer to inside cover of this manual for contact information) c) CAREFULLY GO THROUGH EACH BOX Arrakis inspects every shipment for accuracy.
IN S TA LLA TION IN S TRUCTION S Before you start a) PHYSICAL SPACE It is important to install the console with sufficient space around it to operate and service the console easily. b) AREA IN FRONT OF THE CONSOLE It is normal to have 8-10" between the front of the console and the front of the table so that a piece of paper may be laid on the table in front of the console. c) SCRIPT OR COPY BOARD Are you going to use a copy bridge that span the top of the console for paper or other objects.
IN S TA LLA TION IN S TRUCTION S Getting started... a MUST Read ! a) CONSUMER SOURCE EQUIPMENT The MARC-15 console is designed to be used with balanced professional & unbalanced consumer type audio source equipment such as CD players, MDs, DAT machines, cassette machines, etc. Unbalanced consumer equipment is designed to perform well in compact studios where audio cables are short. Balanced audio is required when connecting multiple studios or with long audio cable runs ( > 10 feet).
IN S TA LLA TION IN S TRUCTION S The Mainframe a) MOUNTING The mainframe is tabletop mounted. It does not require screwing down to the table surface. b) CABLE INGRESS AND EGRESS All cables enter and exit the console at the rear of the mainframe. c) ACCESS TO THE CONSOLE CONNECTORS The mainframe VU meter panel hinges back to provide access to the console wiring area. The motion of the VU meter panel is NOT limited so be careful to not scratch the paint or drop the panel.
IN S TA LLA TION IN S TRUCTION S Power Supply Main Power Supply The power supply is an external regulated supply as illustrated below. The DC power connector plugs into the hole in the rear of the mainframe as shown. The indented key tab on the DC power connector faces up. The connector is recessed a couple of inches into the frame. NOTE: the recessing of the connector can make it difficult to plug in. It is much easier to plug the connector in from the rear of the console than from the front.
IN S TA LLA TION IN S TRUCTION S Cabling The cables supplied with the MARC-15 are #24 gauge, stranded, CAT5, 20-25 feet long, with RJ45 connectors on both ends. Each cable is intended to be cut into two cables with an RJ45 connector at one end and for the other end to be wired to the specific connector for the equipment on the other end. Shield ground The RJ45 cables supplied with the MARC-15 are shielded. They have a shield drain wire.
IN S TA LLA TION IN S TRUCTION S Grounding THE BASICS OF GROUND SYSTEMS (IMPORTANT) 1) MANY TYPES OF GROUNDS Because there are several electrical systems in a broadcast facility, there are also several ground systems in the facility. Each ground system fulfills a different function. Understanding these ground systems is important to be able to properly design and debug an audio facility. 2) AC POWER GROUND AC power wiring has a “hot” wire (typically 110VAC) and a “ground” wire.
IN S TA LLA TION IN S TRUCTION S Grounding (continued) GROUNDING THE MARC-15 CONSOLE 1) CONSOLE CHASSIS GROUND The chassis of the MARC-15 is floating. It is NOT connected to ground at all. This is because the power for the console is provided by an external power supply and only low voltages exist in the console. However, to maximize safety, minimize static shock problems, as well as for RF shielding reasons, the console chassis should be grounded.
IN S TA LLA TION IN S TRUCTION S Monitor amp & Speaker Wiring The console has a balanced, line level monitor audio output that is designed to connect to an external audio power amplifier. The console output will not directly drive speakers. Connect the audio amplifier input to the console Monitor Output on the back of the output module as shown below. Follow the amplifier’s instructions and connect speakers to the amplifier. Set the volume control on the monitor amplifier to 1/2.
IN S TA LLA TION IN S TRUCTION S Headphone Wiring The console has a built in headphone amplifier that will drive hi impedance headphones and 8 ohm headphones. The headphone jack for the amplifier is located at the bottom right of the output module (front right corner of the console). The console also has a balanced line level output for use with an external headphone amplifier. The balanced output is located on the output module on an RJ45 connector. WARNING- do NOT have all levels controls at maximum.
IN S TA LLA TION IN S TRUCTION S External Monitor Input Wiring The console has an external audio input for the monitor system. It is usually connected to an off air signal for the radio station from a radio tuner or modulation monitor. The external input has input for both stereo balanced (+4dBU) and stereo unbalanced (-10dBu) inputs. The balanced input has level trim pots. The unbalanced input is fixed for -10dBu consumer levels.
IN S TA LLA TION IN S TRUCTION S On Air Light Wiring The console features a sustained reed relay closure for activating an on air light. The reed relay has a maximum current of 50 milliamps and should be used to drive an external relay or other AC devices to drive the on air light.
IN S TA LLA TION IN S TRUCTION S Talkback (intercom) Wiring The console has two audio inputs for use in talkback: (1) The console has a balanced, line level audio input that feeds the control room monitor speakers (unless muted by a mic) and in the earphones (whether muted or unmuted). (2) The console has a second -10dBu unbalanced line level input into the cue system for talkback.
IN S TA LLA TION IN S TRUCTION S Program Output Wiring These outputs are active, balanced with < 100 ohms output impedance. They are factory calibrated for +4dBu balanced levels.
IN S TA LLA TION IN S TRUCTION S Mono mic level Input Module Wiring Connectors Logic ‘B’ ‘A’ Channel Control Logic (Turrets) The pins on the ‘Logic’ connector are used to remote control the module for applications such as studio talk turrets. Controls include Channel On, Off, Tally LED driver for on-off status, Talk to Console, and momentary Cough logic. All control is by dry closure to ground. The tally LED should be connected through a 510 ohm resistor to ground.
IN S TA LLA TION IN S TRUCTION S Stereo Line Level Input Module Wiring Channel Control Logic (Turrets) The pins on the ‘Logic’ connector are used to remote control the module for applications such as studio talk turrets. Controls include Channel On, Off, Tally LED driver for on-off status, Talk to Console, and momentary Cough logic. All control is by dry closure to ground. The tally LED should be connected through a 510 ohm resistor to ground.
IN S TA LLA TION IN S TRUCTION S The PC-USB input Module Wiring Connectors Logic Rec USB The RJ45 connector titled ‘RS232 Logic’ wires to a 9 pin RS232 D-sub connector as illustrated below 9 Pin RS232 1 nc 2 Pin 1 RJ45 3 nc 4 nc 5 nc 6 Pin 2 RJ45 7 nc 8 nc 9 Pin 3 RJ45 Rec ord Pgm Aud Utl Cue EIA/TIA 568B WIRING STANDARD COLORS PIN Wire Color Audio 1 White w/Orange Stripe Left (+) 2 Orange w/White Stripe Left (-) 3 White w/Green Stripe Right (+) 4 Blue w/White Stripe Ground 5 White w/Blue Stripe 6
IN S TA LLA TION IN S TRUCTION S The Telephone Input Module Wiring Connectors Logic Out In a) CONSOLE PHONE INPUT- A telephone hybrid has an audio input and an audio output. The hybrid audio output is the callers voice and is connected to the input on the phone module. Output trim b) CONSOLE MIX MINUS OUTPUT- The input to the hybrid is from the console PHONE OUT connector on the back of the module.
IN S TA LLA TION IN S TRUCTION S The Studio Monitor Module Wiring Connectors MUTE LOGIC The ‘Mute Logic’ is a dry contact sustained reed relay closure with a max current of 50 milliamps. The closure should be used to drive an external lamp driver (not drive a lamp directly).
IN S TA LLA TION IN S TRUCTION S PC Setup The MARC-15 PC-USB input modules have a built in sound card. This enables the console to play audio directly from a Windows PC using Arrakis DHD-Live software. The console can play audio from the PC, record audio to the PC, and control the start and stop of play on the PC. RECOMMENDED OPERATING SYSTEM The minimum PC operating system is Windows XP or VISTA.
IN S TA LLA TION IN S TRUCTION S ARC-16SW 16 in X 3 out Remote Selector for the MARC-15 Adding more Inputs to the MARC-15 Console For applications requiring more than the 30 inputs supported by the MARC-15, the ARC-16SW provides up to 16 more stereo inputs that can be selectable to any 3 console channels. The switcher features balanced inputs that are all trim pot adjustable from consumer levels (-10dBu) to professional levels (+4dBu).
IN S TA LLA TION IN S TRUCTION S ARC-16SW Software Push button Array for Manual Control FEATURES Client/Server network control from ANY studio Manual Pushbutton control of 16 inputs & 3 outputs Customized Labeling of all Inputs & Outputs Source lockout to prevent feedback Touchscreen size buttons One Week Source Automation play list Copy & Paste Hour and Day schedules Play log for reconciliation Emergency Silence Sensor on Main Output Programmable delay time One Week Automation Play List Automatically s
IN S TA LLA TION IN S TRUCTION S ARC-16SW 16 in X 3 out Remote Selector for the MARC-15 SWITCHER WIRING a) WHITE MOLEX CONNECTORS As viewed looking down on the switcher . Pin 7 is engraved on the connector housing. Pins are .090" NOTE: the BROADCAST AUDIO DOCKING STATION is a multipurpose product with applications that vary depending on the firmware loaded into the hardware and the PC software used to control it.
IN S TA LLA TION IN S TRUCTION S Basic Calibration WARNING The console has been calibrated at the factory to normal +4dBu levels and should not require field calibration. Usually, it is better to adjust the level out of the source device than to adjust the console trim levels. That is so that the source can be plugged into any module without requiring recalibration of the module. Field calibration should only be done with proper test equipment and by a qualified audio technician.
IN S TA LLA TION IN S TRUCTION S Output Bd Calibration Output module level adjustments are NOT provided on the front of the output module, under the meter panel. This is because these levels are critical to maintain headroom in the console and are factory set for maximum console performance. The output levels are set at the standard +4dBu balanced.
IN S TA LLA TION IN S TRUCTION S Input board Jumper Setup Source Input modules have pin jumpers on the PC board for rarely used module setup. The factory default is correct 90% of the time. The factory will set these jumpers to meet custom configurations if requested when the order is placed. a) Mic Module Phantom Power (Mic module only) Add a jumper if the mic being used is a condenser mic that requires 48VDC phantom power.
IN S TA LLA TION IN S TRUCTION S INPUT OUTPUT WIRING SUMMARY 1) Mono Mic Input module (MARC-MIC) MIC & STEREO LINE MODULES Logic ‘B’ Mono Mic Input ‘A’ Mono Mic Input 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Talk Tally Channel Off Ground Channel On Cough nc nc (+) in (-) in nc Ground nc nc nc nc (+) in (-) in nc Ground Stop Logic nc Logic common Start Logic Channel Control Logic (Turrets) The pins on the ‘Logic’ connector are used to remote control the module for applications such as studio
IN S TA LLA TION IN S TRUCTION S INPUT OUTPUT WIRING SUMMARY (continued) 5) Studio Monitor Board (MARC-STM) Earphone Output Monitor Output External Monitor In 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 Left (+) out Left (-) out Right (+) out Ground nc Right (-) out Mute Logic Mute Logic Left (+) out Left (-) out Right (+) out Ground nc Right (-) out nc nc Left (+) in Left (-) in Right (+) in Ground nc Right (-) in nc nc NOTE The ‘Mute Logic’ is a dry contact sustained reed relay closure with
IN S TA LLA TION IN S TRUCTION S 13.0 Analog Audio Wiring The following sections assume twisted pair, shielded audio cable for all analog wiring. The illustrations demonstrate how to wire balanced and unbalanced analog devices in various configurations. 13.1 Balanced Source Output to Balanced Console Input Balanced inputs and outputs are the best method to reject hum ACTIVE BALANCED AUDIO SOURCE CONSOLE INPUT (+) (+) (-) (-) SHIELD CHASSIS GROUND 13.
IN S TA LLA TION IN S TRUCTION S 13.3 Transformer Balanced Output to Balanced Console Input Transformer sources require a fixed impedance for proper performance. The console input impedance is high compared to the impedance of most transformers and will require a resistor to match the transformer. 600 ohm matching resistor TRANSFORMER BALANCED AUDIO SOURCE CONSOLE INPUT (+) (+) (-) (-) Zin > 10k ohms SHIELD CHASSIS GROUND 13.
IN S TA LLA TION IN S TRUCTION S 13.5 Use of an Isolation Transformer to convert an Unbalanced Source into a Balanced Source In some situations, an isolation transformer is required for RF or ground loop isolation where the source output is unbalanced. The isolation transformer must be impedance matched to BOTH the source and the console. To perform the matching, you must refer to the data sheet for the source device and find the output impedance. That will be Rseries as shown in the diagram.
IN S TA LLA TION IN S TRUCTION S 13.6 Console Balanced Output to Balanced Input Balanced inputs and outputs are the best method to reject hum CONSOLE OUTPUT ACTIVE BALANCED AUDIO INPUT (+) (+) (-) (-) Zin > 10k ohms SHIELD CHASSIS GROUND 13.7 Console Balanced Output to Unbalanced Input Use this wiring method for low noise connection of an unbalanced audio source to a balanced output on a console.
IN S TA LLA TION IN S TRUCTION S 13.8 Console Balanced Output to Transformer Input Transformer sources require a fixed impedance for proper performance. The console output impedance is low compared to the impedance of most transformers and will require a resistor to match the transformer.
IN S TA LLA TION IN S TRUCTION S Ground Loops a) A GROUND LOOP CAUSES 60 CYCLE HUM A ground loop exists when there is more than one ground path between two pieces of electronic equipment. The two ground paths form a large loop antenna which picks up noise currents, particularly 60 cycle AC. The resistance in the ground paths converts these currents into fluctuating noise voltage differentials between the two pieces of equipment.
IN S TA LLA TION IN S TRUCTION S Ground Loops (continued) e) BREAKING A GROUND LOOP WITH AN AUDIO ISOLATION TRANSFORMER In cases where the ground loop can not be broken due to a 3rd wire safety ground as the second part of the ground loop, an audio isolation transformer can be inserted into the audio signal line. This can be required in unbalanced audio connections with signal and ground. The use of transformers may not be desirable, but is sometimes the best solution.
DHD-LIVE FOR THE MARC CONSOLE 5.
Getting Started Included with an ARC series console (with a USB channel) is a free copy of DHD-Live. This software is the ultimate live assist tool for anyone who wants to put on a dynamic and powerful live show. It includes features that give you unprecedented customization and flexibility. We are confident that you will love this software. This software is intended only for Live Assist. This means that it will not be capable of playing unattended such as with an Automation product like Digilink-HD.
S ERVICE & M A IN TEN A N CE SERVICE & MAINTENANCE INSTRUCTIONS 6.
S ERVICE & M A IN TEN A N CE General Repair Considerations WARNING The console should be repaired by qualified, professional, & experienced, audio technicians ONLY. Before beginning any type of repair or opening the console CALL Arrakis customer support for recommendations. DESIGNED FOR MODULAR PART REPLACEMENT The MARC-15 console is designed for modular replacement rather than field repair. The power supply is external and plug in. Most ICs are plug in. The rotary faders, and meters are plug in.
S ERVICE & M A IN TEN A N CE Opening the Console WARNING The console should be repaired by qualified, professional, & experienced, audio technicians ONLY. Before beginning any type of repair or opening the console CALL Arrakis customer support for recommendations. 1) ACCESSING THE MOTHERBOARDS The motherboards are accessed by removing the modules from the console. 2) ACCESSING THE INTERIOR OF THE VU METER PANEL The VU meter panel is opened by removing the screw at the left and right front of the panel.
S ERVICE & M A IN TEN A N CE Removing an Input Module The input modules have a single bus ribbon cable that connects them to the motherboard. Care should be taken when removing or reinstalling this cable.
S ERVICE & M A IN TEN A N CE Removing the Studio Monitor Module The studio monitor module has two bus ribbon cables that connects it to the motherboard. Care should be taken when removing or reinstalling these cables.
S ERVICE & M A IN TEN A N CE Removing the Output Module The output module has four cables that connect it to the motherboard and the VU meter bridge. While none of the cables are interchangeable, care should be taken when removing or reinstalling these cables.
S ERVICE & M A IN TEN A N CE Replacing Slide Faders Slide faders are soldered into the individual module PC boards. Replacement of the slide faders can be done by qualified technicians in the field or the module may be sent into Arrakis for replacement of the fader. Replacing Rotary Faders All 3 rotary faders are in a single wiring harness that plugs into the motherboard. The entire harness should be replaced with all three pots. Contact the factory for a replacement harness.
S ERVICE & M A IN TEN A N CE Replacing ICs ICs must be replaced with care. Most ICs in the console are socketed so that they can be replaced. When replacing an IC, be careful to not bend legs under the IC or outside the socket. Be extremely careful to not shock an IC or the motherboard with a static discharge. In some cases, you must use a grounded arm or anklet if there is a possibility of a static discharge. In all cases, retain the old IC because it may not be damaged. 6.
S ERVICE & M A IN TEN A N CE Electronic Block Diagram Mic module Channel On, Off, Tally Cough, Talkback Logic Trim A/B Trim ON PGM Logic Logic ‘A’ in AUD UTL ‘B’ in PL-PR-AL-AR-UL-UR-Q-TB F A D E R HEADPHONE JACK stereo, drives 8 ohm headphones PGM Pwr UTL M U T E A/B Trim AUD ON PGM Logic Logic UTL CUE F A D E R FET SW Cue Sum Logic Cue Logic -> F A D E R Trim ‘B’ in PGM Trim Monitor Selector AUD UTL SW out balanced, -20 to 10 dBu PGM PC USB module AUD Stt/Stp C
S ERVICE & M A IN TEN A N CE Mic Module Start Relay The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE Stereo Line Module The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. ‘A’ input trimpots ‘B’ input trimpots ‘A’ input preamp NE5532 For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE PC-USB module The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE Phone Module The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE Studio Monitor Module The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE Output Module The MARC-15 console is designed for modular replacement rather than component level field repair. The console is modular and modules can be replaced for immediate repair. The power supply is external and plug in. ICs are plug in. The rotary faders are plug in. For board level part replacement, this page displays a physical board layout with descriptions of the functions of each IC.
S ERVICE & M A IN TEN A N CE Factory Service Technical Questions Arrakis Systems maintains a staff of friendly broadcast engineers, design engineers, and technicians who have many years of in depth field experience in broadcasting. All of our technical resources are available to you to answer installation questions, solve problems, and repair equipment. If you have a question or problem, please feel free to call us. We can not solve every problem, but our people are here to try.
S ERVICE & M A IN TEN A N CE Factory Service (continued) Warranty Replacement of Parts To have a part replaced under warranty, you must: 1) Provide a valid product serial number that is within the warranty period 2) Contact the Arrakis customer service department and describe what parts need replacement and the circumstances of the failure. (The customer service department may require on site test by your technician to confirm the part replacement is appropriate for your problem.
