Lexicon Studio Core2 Service Manual
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Lexicon Studio Core2 Service Manual

Lexicon Studio Core2 Service Manual

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  • Page 1 Lexicon Studio Core2 Desktop Audio System Service Manual...
  • Page 2 Copyright © 1999 Lexicon, Inc. All Rights Reserved Lexicon Inc. ● 3 Oak Park ● Bedford, MA 01730-1441 ● Tel (781) 280-0300 ● Customer Service Fax (781) 280-0499 Lexicon Part # 070-14394 Rev 0 Printed in the United States of America...
  • Page 3 Lexicon...
  • Page 4 Lexicon Studio Core2 Service Manual...

  • Page 5: Table Of Contents

    Installation ..............................5-1 Lexicon Studio Installation Troubleshooting..................5-1 Lexicon Studio Core2: Complete Uninstall and re-installation directions..........5-1 Lexicon Studio Core2: sharing IRQ or no resources assigned. Change BIOS ........5-3 V1.20 Release Notes ..........................5-3 Addendum #1: NEW USER INTERFACE FEATURES................. 5-4 Addendum #2: AUXILIARY SENDS AND RETURNS................
  • Page 6 Lexicon Studio Core2: Update patch v120-P1 won't unzip properly............5-9 C2V120P2.reg - Update..........................5-9 Lexicon Studio Core2: In Cubase®, the LexPanel does not get properly shut down from the task bar... 5-9 Chapter 6 Theory of Operation ..............6-1 Architectural Overview ..........................6-1 Core2 Block Diagram ..........................

  • Page 7: Chapter 1 Reference Documents, Required Equipment

    A personal PC (PC) with an Intel Pentium CPU of at least 200Mhz. 64meg memory, Windows95®. A monitor, keyboard and mouse. Lexicon Studio Core2 system consisting of a Core2 PCI card, Connector Box and the proprietary Lexicon cable to connect the Core2 and Connector Box (provided with the system). Amplifier with speakers or headphones.

  • Page 9: Chapter 2 General Information

    Return Authorization from Lexicon. If Lexicon recommends that a Lexicon Studio Core2 be returned for repair and you choose to return the unit to Lexicon for service, Lexicon assumes no responsibility for the unit in shipment from the customer to the factory, whether the unit is in or out of warranty.

  • Page 11: Chapter 3 Specifications

    Internal Interface Option board connector Power Requirements +5v ±5% Clock Range 44.1 kHz ±2%, 48 kHz ±2% FCC Rating Class B Operating Temperature 30°-100°F (0°-40°C) Bundled Software Lexicon Drivers and Control Panel, Syntrillium Cool Edit Pro Specifications subject to change without notice.

  • Page 13: Chapter 4 Performance Verification

    Chapter 4 Performance Ver i fication This section describes a quick verification of the operation of the Lexicon Core2 system and the integrity of its analog and digital audio signal paths. These tests should be performed without any programs running on the PC.

  • Page 14: Clock Source Page

    Lexicon Studio Core2 Service Manual IMPORTANT: The LexPanel MUST be the focused (active) application in order for any audio to pass through the Core2 hardware. Clock Source Page: The Clock Source page is used for selecting the internal Sample Rate and audio Clock Source.

  • Page 15: Core2 Page

    Lexicon Core2 Page: The Core2 page is used for configuring audio routing. The example below shows the Analog Inputs, Outputs 1-4 & Outputs 5-8 and S/PDIF In & S/PDIF Out are enabled. The “Core2” page (above) is also used for changing the settings of the Analog Input Level faders.

  • Page 16: I/O Tests

    Be sure to turn the volume down on the amplifier. 3. Open the LexPanel by double clicking on the Lexicon Studio Icon. 4. Click on the Core2 tab to bring it forward. In the Routing area, activate the Analog Inputs, Analog Outputs 1-4, and Analog Outputs 5-8 buttons by clicking on each of them.

  • Page 17: Digital In To Digital Out Audio Listening Test

    4. Open the LexPanel by double clicking on the Lexicon Studio Icon. 5. Click on the Core2 tab to bring it forward. In the Routing area, activate the S/PDIF In and S/PDIF Out buttons by clicking on each of them.

  • Page 18: Gain Tests

    2. Connect the digital output marked S/PDIF of the Core2 Connector Box to the Digital Distortion Analyzer 3. Open the LexPanel by double clicking on the Lexicon Studio Icon. 4. Click on the Core2 tab to bring it forward. In the Routing area, activate the Analog Inputs and S/PDIF Out buttons by clicking on it.

  • Page 19: Frequency Response

    2. Connect the digital output marked S/PDIF on the Core2 Connector Box to the Digital Distortion Analyzer. 3. Open the LexPanel by double clicking on the Lexicon Studio Icon. 4. Click on the Core2 tab to bring it forward. In the Routing area, activate the Analog Inputs and S/PDIF Out buttons by clicking on them.

  • Page 20: Thd+N Measurement

    2. Connect the digital output marked S/PDIF on the Core2 Connector Box to the Digital Distortion Analyzer set to measure THD+N. 3. Open the LexPanel by double clicking on the Lexicon Studio Icon. 4. Click on the Core2 tab to bring it forward. In the Routing area activate the Analog Inputs and S/PDIF Out buttons by clicking on them.

  • Page 21: Digital In To Analog Out Thd+N Test

    3. On the Analyzer, engage the 20Hz to 20kHz audio bandpass filters. 4. Open the LexPanel by double clicking on the Lexicon Studio Icon. 5. Click on the Core2 tab to bring it forward. In the Routing area, activate the S/PDIF In, Analog Outputs 1- 4, and Output 5-8 buttons by clicking on each of them.

  • Page 22: Digital In To Analog Out Crosstalk Test

    3. On the Analyzer, engage the 20Hz to 20kHz audio bandpass filters. 4. Open the LexPanel by double clicking on the Lexicon Studio Icon. 5. Click on the Core2 tab to bring it forward. In the Routing area, activate the S/PDIF In, Analog Outputs 1- 4, and Output 5-8 buttons by clicking on each of them.

  • Page 23: Digital In To Analog Out Signal To Noise Test

    3. On the Analyzer engage the 20Hz to 20kHz audio bandpass filters. 4. Open the LexPanel by double clicking on the Lexicon Studio Icon. 5. Click on the Core2 tab to bring it forward. In the Routing area, activate the S/PDIF In, Analog Outputs 1- 4, and Output 5-8 buttons by clicking on each of them.

  • Page 24: Dbx Thd+N Tests

    2. Connect the digital output marked S/PDIF of the Core2 Connector Box to the Digital Distortion Analyzer set to measure THD+N. 3. Open the LexPanel by double clicking on the Lexicon Studio Icon. 4. Click on the Core2 tab to bring it forward. In the Routing area, activate the Analog Inputs and S/PDIF Out buttons by clicking on them.

  • Page 25: Lexicon Audio Precision Ate Summary

    Lexicon Lexicon Audio Precision ATE Summary 4-13...

  • Page 27: Chapter 5 Troubleshooting

    C2V120P2.reg. Double click on the file, let it run, then restart your computer. 1. Make sure Lexicon is not sharing an IRQ with anything other than IRQ Holder for PCI Steering. If it is, try moving the Lexicon card to another PCI slot. To check for IRQ sharing, go to the Start menu and select Settings, Control Panel.
  • Page 28 16. Then click on the box next to MEDIA. There you will see a folder or folders with a series of 4 numbers. Click on each folder until you find the one (or ones) for Lexicon IDS Sound System (in right hand pane).

  • Page 29: Lexicon Studio Core2: Sharing Irq Or No Resources Assigned. Change Bios

    2. Then a dialog box will appear telling you that, "Windows found the following updated driver for this device, Lexicon IDS Sound System". Click on Finish. Windows will usually have trouble copying the first file. If this happens, click Browse and browse to the correct location (the CDROM). Then click OK and Windows will continue copying the files.

  • Page 30: Addendum #1: New User Interface Features

    Lexicon Studio Core2 Service Manual Cubase issues: Addendum #5: ROUTING IN CUBASE Addendum #6: PUNCH ROUTING IN CUBASE Addendum #7: CLOCK SOURCE CONSISTENCY IN CUBASE Wave (Multimedia I/O) issues: Addendum #8: THE EFFECT OF ROUTING CHANGES ON WAVE DRIVERS Addendum #9: SELECTION OF WINDOWS SOUNDS...

  • Page 31: Addendum #2: Auxiliary Sends And Returns

    When a song or arrangement is saved in Cubase, all bus and FX settings are also stored. If changes are made to the Routing tab in the Lexicon control panel, Cubase will see the ASIO driver as a new device and clear all the bus and FX settings that were saved.

  • Page 32: Addendum #7: Clock Source Consistency In Cubase

    Addendum #8: THE EFFECT OF ROUTING CHANGES ON WAVE DRIVERS If you are using the Wave drivers and make any changes to the Routing Tab in the Lexicon control panel, you MUST restart Windows in order to have these changes take effect. If the ASIO drivers are being used, it is not necessary to restart Windows.

  • Page 33: Addendum #9: Selection Of Windows Sounds

    Lexicon Addendum #9: SELECTION OF WINDOWS SOUNDS As a high-performance audio card, the Core2 is designed for use with sample rates of 44.1 kHz and 48.0 kHz frequencies. Because most wave files that are installed with the Windows operating system are formatted at the 22 kHz or 11 kHz sampling rate, the Core2 may not play such wave files in a desirable fashion.

  • Page 34: Core2 User's Guide Errata

    Installing this update is very simple. Just follow the instructions below or contact Lexicon customer support for assistance. 1. Right click on the Lexicon Studio icon at the task bar and select. Shut down LexPanel. 2. Next, invoke Close Program by simultaneously pressing Ctrl/Alt/Delete on the keyboard. Select ASERVICE and click on "End Task".

  • Page 35: Lexicon Studio Core2: Update Patch V120-P1 Won't Unzip Properly

    A: When attempting to Launch the LexPanel from the task bar, the hour glass appears briefly then disappears with no resulting action. Q: What is the cause? A: This is a result of hitting Cancel at the "Lexicon Studio Control Panel Selection" prompt. Q: What is the solution?
  • Page 36 Lexicon Studio Core2 Service Manual A: While running in ASIO mode, always select the LexPanel from the Cubase system dialog. If you have encountered this problem, the remedy is to invoke "CLOSE PROGRAM" by pressing Cntrl/Alt/Delete simultaneously on the keyboard. Next, select Lexpanel and click on end task.

  • Page 37: Chapter 6 Theory Of Operation

    Lexicon Chapter 6 Theory of Operat i on Architectural Overview The Core2 is a 28 channel hard disk recorder card for PCI-bus based PC/Windows and Macintosh computers. It is capable of 44.1K, 48K, 88.2K, and 96K sample rates, but only 44.1K and 48K will be supported at first customer ship.

  • Page 38: Core2 Block Diagram

    Lexicon Studio Core2 Service Manual Core2 Block Diagram Analog In Input CH 1 Level AK5383 AD_CH12 Control DBX Type-4 96K-S/s SDATA CS3310 24bits CH 2 DBX Type-4 SampleClk FPGA MasterClk XCS10 RefClk ADAT IN ADAT OUT SPDIF RCA IN SPDIF RCA OUT...

  • Page 39: Startup Sequence

    Lexicon Startup Sequence At power-up the DSP56301 (U23, sheet 1) is held in the reset state by the RC network comprised of R122 and C129. Once the voltage across C129 reaches 2V the DSP56301 will exit the reset state and read its bootup program from the Boot PROM (U24, sheet 2).

  • Page 40: Dsp 56301 Expansion Port Memory Map (Aa0 Chip Select, 48K/44.1K Mode)

    Lexicon Studio Core2 Service Manual $000000 - $CFFFFF not used DSP 56301 Expansion Port Memory Map (AA0 chip select, 48K/44.1K mode) Chip Select Address Resource $100027-100029 SPDIF Right Channel sample #2 (DMA only) not used $100024-100026 SPDIF Left Channel sample #2 (DMA only) not...

  • Page 41: Dsp 56301 Expansion Port Memory Map (Aa0 Chip Select, 96K/88.2K Mode 3)

    This device is programmed with one of several programs that are chosen by the user, depending on the I/O configuration that is selected through the Lexicon Control Panel which runs on the host computer. The FPGA may be programmed at any time by the DSP56301 to accommodate different I/O configurations.

  • Page 42: System Control Register 0

    Lexicon Studio Core2 Service Manual U25 (QS3245) is used to limit the data bus signal levels sensed by the DSP56301 to 3.3V. The diode (D23) in series with the VCC pin of U25 presents a VCC of 4.3V to the QS3245.

  • Page 43: System Status Register

    Lexicon System Status Register Register Bit Signal Function Active State Number Name not used not used not used not used ADSAT4 DBX type 4 compression is active on channels 7&8 High ADSAT3 DBX type 4 compression is active on channels 5&6...

  • Page 44: Audio I/O & Connectors (Schematic Sheet 5.)

    Lexicon Studio Core2 Service Manual Audio I/O & Connectors (schematic sheet 5.) The S/PDIF serial output signal (SPDIG_OUT) is buffered by U22 and AC coupled to become the SPDIF_OUT signal which is sent to the connector box. The AC coupled SPDIF_IN signal is buffered and amplified by U28 which presents the SPDIG_IN signal to the FPGA.

  • Page 45: Chapter 7 - Parts List

    Lexicon Chapter 7 - Parts List CORE 2 PC BOARD ASSEMBLY PART NO. DESCRIPTION REFERENCE 120-09620 ADHESIVE,LOCTITE,#430,SUPER 0.00 J1 SCREWS 202-09794 RESSM,RO,0 OHM,0805 1.00 R142 202-09795 RESSM,RO,5%,1/10W,2.2K OHM 2.00 R145,158 202-09873 RESSM,RO,5%,1/10W,10K OHM 10.00 R130-134,137-139,155 R156 202-09894 RESSM,RO,5%,1/10W,1M OHM 2.00...
  • Page 46 Lexicon Studio Core2 Service Manual PART NO. DESCRIPTION REFERENCE 245-10561 CAPSM,CER,100pF,50V,COG,5% 8.00 C78-81,88-91 245-10976 CAPSM,CER,47pF,50V,COG,5% 4.00 C1,2,123,124 245-11594 CAPSM,CER,2200pF,50V,COG,5% 4.00 C99,100,107,108 245-11625 CAPSM,CER,33pF,50V,COG,5% 4.00 C134,135,137,138 245-12316 CAPSM,CER,.0082uF,50V,X7R,10% 1.00 C128 245-12485 CAPSM,CER,.1uF,25V,Z5U,20% 90.00 BC1,2,5-8,13-16(+/-) BC22;BC23A-H,J-L BC24;BC27A-H BC28,29 C4,6-10,47,50,52,53 C56,58,59,62,64,66 C68,70,72,82,96-98 C101-106,109-111...

  • Page 47: Core2 Connector Bd Mechanical Assembly

    Lexicon CORE2 CONNECTOR BD MECHANICAL ASSEMBLY PART NO. DESCRIPTION REFERENCE 541-00781 BUMPER,FEET,.5SQX.23H,ADH,BLK 4.00 PLATE BOTTOM 641-01703 SCRW,TAP,AB,4X1/4,PNH,PH,ZN 4.00 CB TO BOTTOM PLATE 641-10989 SCRW,TAP,AB,4X3/8,PNH,PH,BZ 5.00 RCA CONN TO CVR (1); COVER TO BOTTOM (4) 700-13741 COVER,CORE2 1.00 702-13740 PLATE,BOTTOM,CORE2 1.00...

  • Page 49: Schematics

    Lexicon Chapter 8 Schematics and D r awings Schematics: 060-13719 SCHEM,MAIN BD,CORE2 060-13739 SCHEM,CONN BD,CORE2 Drawings: 080-13718 PC,ASSY DWG,MAIN BD,CORE2 080-13738 PC,ASSY DWG,CONN BD,CORE2 080-13744 ASSY DWG,CHASSIS,CORE2 080-13747 ASSY DWG,SHIPMENT,CORE2...
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  • Page 86 Lexicon, Inc. 3 Oak Park Bedford, MA 01730-1441 Tel: 781-280-0300 Customer Service Fax: 781-280-0499 Email: csupport@lexicon.com www.lexicon.com Lexicon Part No. 070-14394 Rev 0 Printed in U.S.A.

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