.1 ARC-10 & ARC-15 Service Manual ARC-10 Arrakis Systems inc. Advanced Radio Console Pgm Pgm Pgm Pgm Pgm Pgm Pgm Pgm Pgm Pgm Aud Aud Aud Aud Aud Aud Aud Aud Aud Aud Talk Talk Cue Cue Cue Cue Cue ARC-15 Cue Cue Cue Pgm Pgm Pgm Pgm Aud Aud Aud Aud Talk Cue Cue Cue Cue Arrakis Systems inc.
1.2 How to contact Arrakis Systems Arrakis Systems inc. is located at Arrakis Systems inc 6604 Powell Street Loveland, Colorado 80538 Business Hours: 8:00am - 4:30pm mountain time Contact: 970-461-0730 970-663-1010 support@arrakis-systems.com arrakis-systems.com Voice: Fax: email: web: Having difficulty contacting Arrakis? Refer to the website at... www.arrakis-systems.
1.3 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.
1.4 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.
1.5 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.
General Repair Considerations 1.6 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 ARC series console is designed for modular replacement rather than repair. The power supply is external and plug in. The rotary faders are plug in.
1.7 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. ACCESSING THE MOTHERBOARD The motherboard is accessed from the bottom of the console. Six screws must be removed from the bottom panel to have access to the console electronics for test and IC replacement.
Replacing Slide Faders, Switches, and other parts Slide faders and switches are soldered onto the PC board and should be replaced at the factory if at all possible. The procedure requires proper tools, and it can be difficult to remove the parts without damaging traces or pads on the PC board. Also, the switches are very sensitive to temperature and duration during the soldering process and can be electronically damaged or destroyed when being soldered.
1.9 Replacing Rotary Faders REMOVING THE KNOB KNOB COVER 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. Pry cover from top of the Knob to reveal a lock nut. Unscrew the lock nut to remove the knob To remove a rotary fader (1) Remove the knob cover as illustrated (2) Remove the nut and nut plate. (3) The pot will now remove from the rear of the front panel.
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 PC board 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 be found to not be damaged. 1.
Factory Service 1.11 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.
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.
1.
ARC-10 Parts Layout DC Power CN10 CN11 Meter Housing Cable Conn Cue CH 9 In In Air In VU meter drivers RS232 Cable CN12 Monitor Select FET Sw (CD4052) Phone SW amp Headphone Autocue FET Sw (CD4053) Phone Talkback FET Sw (CD4053) -5V led Air PGM Out Phone Logic A / Q +12V led Monitor Out Mono Mix Out AUD unbal Out CH 10 P-A-Q Lgc (CD4049) Phone Out PGM Out (R) PGM Out (L) Phone In USB Ch 9 In Unbal/USB LL RR Phone Out PGM unbal Out USB REC IN A P A P Phone In PGM L out PGM R o
ARC-10 Motherboard IDC Connector Diagrams CN12- RS232 IDC Conn. 1 2 3 4 5 6 7 8 9 10 Not connected Data Set Ready (DSR) Not connected Request to Send (RTS) Not connected Clear to Send (CTS) Not connected Not connected In Ground Not connected CN10- VU Meter IDC Conn. 1 2 3 4 5 6 7 8 9 10 Not connected Not connected Pgm Left VU Pgm Right VU +5VDC +5VDC Ground Ground Not connected Control Room Mute Logic Note: connects thru ribbon cable to top VU meter panel 1.
ARC-15 Electronic Block Diagram MIC CHANNELS ON PGM Logic Logic 1.
ARC-15 Parts Layout (10 channel main board) DC Power CN10 Cue CH 9 In In Mon Out CN11 -12V led RS232 Cable Monitor Select FET Sw (CD4052) Phone SW amp PGM mix amp A / Q Talk CN14 Cue Speaker Amp (LM386) -5V led Phone Talkback FET Sw (CD4053) CN15 Headphone Cable Conn Headphone Amp Right (LM386) +5V led Phone Out +12V led Phone Out Mono Mix Out AUD unbal Out CH 15 P-A-Q Lgc (CD4049) PGM unbal Out USB REC IN A P A P PGM Out (R) PGM Out (L) Phone In Ch14 USB Ch 14 In Unbal/USB LL R
ARC-15 Motherboard IDC Connector Diagrams CN12- RS232 IDC Conn. 1 2 3 4 5 6 7 8 9 10 Not connected Data Set Ready (DSR) Not connected Request to Send (RTS) Not connected Clear to Send (CTS) Not connected Not connected In Ground Not connected CN 7- VU Meter IDC Conn. 1 2 3 4 5 6 7 8 9 10 Program Left Program Right Audition Left Audition Right -12VDC -12VDC +12VDC +12VDC Ground Ground Note: connects thru ribbon cable to top VU meter panel 1.
ARC-15 Parts Layout (5 channel expansion board) Stereo Line Channel Inputs CH 6 CH 5 CH 4 CH 3 CH 2 In In In In In CH 7 In 1.
1.20 ARC-15 VU Meter Driver PC Board U1 U2 10pF 32.4K 4.7K + 6 _ 7 5532 47uF 50K 2.2K CN1 5 U1B + Pgm R CN2 PL PR AL AR 10pF 32.4K 4.7K + TO MOTHER BOARD 2 _ 1 5532 47uF 50K 2.2K 3 U1A + Pgm L CN1 10pF 32.4K + 50K 4.7K 2 _ 5532 3 U2A 47uF 1 2.2K + Aud L 10pF 32.4K + 50K 47uF 4.7K 6 _ 5532 5 U2B + 7 Aud R 2.
1.21 10 Ch Motherboard Bus Block Diagram This diagram documents the basic bus tracing on the motherboard.
Fader & Bus Assignment schematic Input preamp schematic 10K Rf = trimpot + 10 ohms Rf = 10 then Av= 1000 (60dB) Rf = 1000 then Av= 10 (20dB) Nominal Input Level (-)62dBm to (-)22dBm 10 ohms 12V 6.8k +48 VDC 13 Y Mic Talkback to Studio 14 CD4053 X/Y U4C 10K 12 X inh 6 1.0k 22uF, 63V Mic Audio Input Note on CD4053 Headroom At +(-)5V Vdd and Vee, the CD4053 clips at +13dBU for 15dB of headroom above the nominal (-)2dBU level. 1.
Fader & Bus Assignment schematic Input preamp schematic 10K Note on CD4053 Headroom At +(-)5V Vdd and Vee, the CD4053 clips at +13dBU for 15dB of headroom above the nominal (-)2dBU level. 13 Y 1.23 +5V 16 Vdd ctrl 11 Cue 14 CD4053 X/Y U4C 10K 12 X inh 6 (Av = 7dB) (-10dBu) Left Unbalanced -10dBu Stereo Audio Input 10K (-2dBu) (-2dBu) 22.1K 2 _ (-2dBu = 1.
Fader & Bus Assignment schematic Input preamp schematic 10K Note on CD4053 Headroom At +(-)5V Vdd and Vee, the CD4053 clips at +13dBU for 15dB of headroom above the nominal (-)2dBU level. 10K 2 _ 12 100K 10K 10K 47uF 1 3 U1A + 10K X inh 6 10K 3 6 _ 47uF + ctrl 9 5 Aud L X Vee inh 6 7 (-)5V 3 Fader (-2dBu = 1.7VPtoP) Pgm L 6 4 CD4053 X/Y U4B 10K 7 5 U1A + Vss inh Y 10K Top 100K 3 8 +5V 9 8 10K 4334 5532 (+4dBu =3.5VPtoP) 1 5532 U2A + 10K 10pF X 40.
Fader & Bus Assignment schematic Input preamp schematic 10K Note on CD4053 Headroom At +(-)5V Vdd and Vee, the CD4053 clips at +13dBU for 15dB of headroom above the nominal (-)2dBU level. 10K 50K Cue 14 CD4053 X/Y U4C 10K 12 47uF X inh 6 Audio bus 10K 10K 3 1 5532 U2A + 47uF 9 Vss inh Pgm 6 Phone Channel 8 4.
Fader & Bus Assignment schematic Input preamp schematic 10K Note on CD4053 Headroom At +(-)5V Vdd and Vee, the CD4053 clips at +13dBU for 15dB of headroom above the nominal (-)2dBU level. 1.5K D+ D- Gnd 23.7 ohms 2 23.7 ohms 4 10uF Shell 10uF Av= -24dB + 26.7K Record in from stereo anti-aliasing filter identical to the Play filter in this drawing 1.
(-2dB) 47pF PL 10uF + 100K 10uF + 511 + 10uF + 47pF 10K PR 10uF 2 _ 5532 3 U1A + 511 1 2 _ trim adjust -15 to +18dBu unbal -9 to + 24dBu bal 1 47 ohm (Max out = +25dBu) 3 U1A + 1 +4 dBu Balanced + 47 ohm PR (+4dBu =3.5VPtoP) 47pF (-2dB) 10uF 10uF + 5532 3 U1A 2 _ 10uF 10K + 511 12.1K PL PR AL AR + 10K 1 10uF + + 511 (Av= -8dB) 8.25K 47pF 10K 10uF 2 _ 1 5532 Pgm 10uF + 3.
CR Mute Logic Bus (+)5VDC Av = (-)8dB to +10dB 16 (-2dBu = 1.7VPtoP) 47pF 50K 6.8K L (-2dBu) 22K 2 _ 2 + 15 10uF + Air Mon (-12 to +6dBu) Input 10K 1 5532 3 U1A 5 14 47pF 1 50K 6.
dBu VPtoP -50 0.0069 -20 0.22 -10 0.69 -2 1.7 0 2.2 +4 3.5 +8 5.5 +10 7.0 +13 10.0 +19 20.0 +19.8 21.5 1.29 (-2dBu = 1.7VPtoP) from Output Schematic PL PR AL AR 10K 10K OUTPUTS 10pF 10K 2 _ 3.9K 5532 3 U1A 3.29K 1 47 7 47 Pgm mono mix (-)10dBu + 10K 10K 10pF 10K 6 _ 3.9K 5532 5 U1B 3.
1.30 Balanced Inputs Input channels with balanced audio using RJ45 connectors as illustrated below. Pins 5,7,8 are not connected. The balanced inputs are > 10,000 ohm input impedance and levels are set for +4dBu signals.
Console Logic 1.31 The DB-15 connector on the rear panel of the console has the logic & audio signals required for supporting a talk studio and controlling the starting & stopping of sources. Channel Logic Channel 3,4,5,6,7,8, & 10 feature channel logic for use in talk studios or starting and stopping source devices. The logic requires an interface circuit to be built by a qualified broadcast technician.
