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NEC VERSA MEDIADOCK Service Manual

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PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is
the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its licen-
sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu-
ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except
to the extent said rights are expressly granted to others.
The NEC product(s) discussed in this document are warranted in accordance with the terms
of the Warranty Statement accompanying each product. However, actual performance of
each such product is dependent upon factors such as system configuration, customer data,
and operator control. Since implementation by customers of each product may vary, the
suitability of specific product configurations and applications must be determined by the
customer and is not warranted by NEC.
To allow for design and specification improvements, the information in this document is
subject to change at any time, without notice. Reproduction of this document or portions
thereof without prior written approval of NEC is prohibited.
FastFacts, and NEC SVGA, are U.S. trademarks of NEC Technologies, Inc.
All other product, brand, or trade names used in this publication are the trademarks or registered
trademarks of their respective trademark owners.
Copyright 1995
NEC Technologies, Inc.
1414 Massachusetts Avenue
Boxborough, MA 01719
All Rights Reserved
First Printing — March 1995
Copyright 1995
NEC Corporation
7-1 Shiba 5-Chome, Minato-Ku
Tokyo 108-01, Japan
All Rights Reserved

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  Summary of Contents for NEC VERSA MEDIADOCK

  • Page 1 The information disclosed in this document, including all designs and related materials, is the valuable property of NEC Corporation (NEC) and/or its licensors. NEC and/or its licen- sors, as appropriate, reserve all patent, copyright and other proprietary rights to this docu- ment, including all design, manufacturing, reproduction, use, and sales rights thereto, except to the extent said rights are expressly granted to others.
  • Page 2: Preface

    NEC service and spare parts ordering information is also provided. Included is a list of NEC service and informa- tion telephone numbers that provide access to the NEC Bulletin Board System (BBS), FASTFACTS, and Technical Information Bulletins.
  • Page 3: Abbreviations

    Abbreviations ampere DMAC DMA controller alternating current disk operating system advanced technology DRAM dynamic RAM (IBM PC) docking station automatic configuration utility EPROM erasable and programmable amplifier Bulletin Board System Fahrenheit binary-coded decimal facsimile transmission BIOS Customized Utility Federal Communications Commission BIOS basic input/output system...
  • Page 4 Abbreviations kilo (1024) quad flat pack kilo (1000) random-access memory kilobyte RAMDAC RAM digital-to-analog kilogram row address strobe kilohertz red green blue kilovolt read pound real-time clock light-emitting diode read/write mega slave milliamps SIMM single inline memory module maximum silver package megabyte silver package modified frequency modulation...
  • Page 5: Table Of Contents

    Contents Preface ........................Abbreviations ......................Section 1 Technical Information Hardware Overview..................... 1-2 Chassis ......................... 1-2 Sound Board ......................1-4 Power Amplifier Board..................1-6 Speakers....................... 1-6 CD-ROM Reader....................1-7 Cables........................1-7 MediaDock Chipset ..................... 1-7 Digital Interface......................1-8 Analog Interface ......................1-9 I/O Address Map ......................
  • Page 6 Product Information ..................... 4-2 Ordering Information from FastFacts ..............4-3 Maintenance ........................ 4-4 Cleaning the System's Exterior................4-4 Cleaning the System's Interior................4-4 Precautions....................4-4 Troubleshooting ......................4-6 Diagnosing and Solving Problems ................. 4-6 Remote Technical Support..................4-7 NEC Communications Assistant ................4-7...
  • Page 7 Contents Disassembly and Reassembly ..................4-8 Top Cover Assembly .................... 4-9 Sound Board ......................4-12 Power Amplifier Board..................4-14 Assembly Handle, Right Latch, Left Latch ............4-16 CD ROM Reader....................4-18 High-Range Speakers ................... 4-20 Mid-Range Speakers..................... 4-23 Illustrated Parts Breakdown..................4-24 Appendix A Software Setup for Customized Disks System File Modification .....................
  • Page 8 Contents 2-10 Locking Latch During Release ............... 2-9 2-11 Versa M Audio Switcher Welcome Screen............. 2-17 2-12 Audio Switcher Dialog Box ................2-18 2-13 MediaDock Controls..................2-21 2-14 MediaDock I/O Connectors ................2-22 2-15 CD-ROM Reader Controls and Indicators............2-24 2-16 Pressing the Stop/Eject Button...............
  • Page 9 I/O Address Map ................... 1-9 Interrupt Level Assignments ................1-10 MediaDock Specifications................1-12 I/O Connector Descriptions ................2-22 NEC Service and Information Telephone Numbers ........4-1 Problems and Solutions.................. 4-6 MediaDock Disassembly Sequence ..............4-8 Versa Series MediaDock Field-Replaceable Parts*......... 4-24...
  • Page 10: Section 1 Technical Information

    Section 1 Technical Information The NEC Versa™ MediaDock™ offers the user the finest quality sound system available for laptop multimedia presentations. The MediaDock works with the following NEC Versa laptop models, providing an excellent way to integrate sound with video:...
  • Page 11: Hardware Overview

    Versa notebook computers via a 198-pin docking connector. The MediaDock’s design in- cludes a protective hood to cover the connector. Additional front and side features include NEC’s double-speed CD-ROM reader (CDR-250), system locking latches and release but- tons, and four Altec Lansing stereo speakers.
  • Page 12 Technical Information Rear and side MediaDock components are shown in Figure Section 1-3. These include the Volume Control lever, and Tone Control lever. For information on using these controls, see Section 2, Setup and Operation. Standard I/O connectors also shown here include the head- phone port, microphone port, line in and line out ports, and the power port.
  • Page 13: Sound Board

    Technical Information Sound Board The sound board (G8SEA) is installed in the rear section of the MediaDock chassis. Sound board connectors include the docking cable connector (J4), IDE cable connector (J5), line- out cable connector (J7), and the power amplifier cable connector (J9). Figure Section 1-4 Locating Sound Board Connectors...
  • Page 14 Technical Information ® The board integrates the ESS AudioDrive ES688S sound chip. The chip provides 16-bit stereo, a 5 channel mixer and stereo inputs for line in, CD-ROM, and music synthesis. The sound board includes a Yamaha OPL3 musical instrument digital interface synthesizer (MIDI) and offers up to 44 Khz sampling frequency.
  • Page 15: Power Amplifier Board

    Technical Information Power Amplifier Board The power amplifier board is installed in front of the CD ROM reader in the chassis. The board supplies dynamic sound power to the high-range and mid-range speakers. It connects to the speakers via a red and black dual sound cable. The power amplifier board houses the tone and volume controls, as well as the headphone and microphone ports.
  • Page 16: Cd-Rom Reader

    Technical Information CD-ROM Reader The sound system contains a standard NEC CDR-250 dual-speed CD-ROM reader. The CD-ROM reader lets the user access data and play audio CDs. It uses an IDE interface and is assigned to the next available drive letter. The CD-ROM reader is compatible with Kodak Multisession Photo CDs™...
  • Page 17: Digital Interface

    Technical Information Table Section 1-1 MediaDock Chip Types and Technologies Chip Manufacturer Description Technology YAC512-M Yamaha FM Digital to Analog 16-pin SOP Converter (DAC) TDA7284 SGS-Thomson Mic in Amp 14-pin DIP/SO DIGITAL INTERFACE Refer to Table Section 1-2 for a list of digital interface specifications. Table Section 1-2 Digital I/F Specifications Item Media Dock...
  • Page 18: Analog Interface

    Technical Information ANALOG INTERFACE Refer to Table Section 1-3 for a list of analog interface specifications. Table Section 1-3 Analog I/F Specifications Output Parameter Specification Internal Speaker Output Level 4 Watts Per Channel Output Impedance 8 Ohms Frequency Response 20 Hz to 20 KHz Headphone Output Level 4 Watts Per Channel...
  • Page 19: Interrupt Level Assignments

    1-10 Technical Information Table Section 1-4 I/O Address Map Address Function 0376H Alternate HDD, Control and Status (Secondary) 0377H Alternate HDD, Digital Input Register (Secondary) 0388 - 038BH FM Synthesizer 0C10H Docking Station Control Register 0C11H Reserved 0C18H ISA Function/Slot Control Register 0C19H Serial EPROM Control 1C10H...
  • Page 20 Technical Information 1-11 Table Section 1-5 Interrupt Level Assignments Interrupt Assignment IRQ14 IRQ15...
  • Page 21: Specifications

    1-12 Technical Information SPECIFICATIONS Table Section 1-6 provides a complete list of the MediaDock specifications. Table Section 1-6 MediaDock Specifications Item Specification Chassis Configuration (Size) Width: 11.6 in. (88.9 mm) Depth: 13 in. (330.2 mm) Height: 3.5 in. (88.9 mm) Weight: 6.3 lb (2.85 kg) Sound System Features —...
  • Page 22 Technical Information 1-13 Table Section 1-6 MediaDock Specifications Item Specification CDR-250 Dual-Speed CD-ROM Reader Data Capacity — 680 MB Total Number of Blocks — 333,000 blocks/disc Data Blocks — 2048 bytes/blocks Data Transfer Rate — 300 kilobytes (KB) per second Burst Transfer Rate —...
  • Page 23: Section 2 Setup And Operation

    Section 2 Setup and Operation This section provides setup and operation information for the MediaDock. This includes ca- bling, power-on verification and using the Automatic Configuration Utility (ACU). UNPACKING THE SYSTEM Find an area away from devices that generate strong magnetic fields (electric motors, transformers, etc.).
  • Page 24: Connecting The Versa

    Setup and Operation Attach the other end to a wall outlet. Figure Section 2-1 Connecting the AC Adapter CAUTION: Disconnecting the plug, the AC adapter, or the power cord while the MediaDock and Versa are running, results in a system crash. Use the procedure that follows to connect the Versa to the MediaDock.
  • Page 25 Setup and Operation Verify that the AC adapter that came with the MediaDock is connected to the MediaDock and AC power. On the back of the Versa, open the expansion port cover and slide it underneath the expansion port. Figure Section 2-2 Opening the Versa Expansion Port Cover Figure Section 2-3 Stowing the Expansion Port Cover Push the MediaDock docking lever all the way to the back of the unit.
  • Page 26 Setup and Operation Align the Versa over the MediaDock and lower it into place. Press down on the Versa until the locking latches click to secure the Versa in position. Figure Section 2-4 Aligning the Versa and the MediaDock Pull the docking lever to the front of the MediaDock. Check that the lever is as far to the front as it can go.
  • Page 27: Powering On

    Setup and Operation To verify that the connection is made, open the Versa LCD panel and check the battery status LCD. The LCD should show that the battery is charging. If it does not, verify that the AC adapter and power cable are connected properly to the MediaDock. Then pull the docking lever forward again.
  • Page 28: Disconnecting The Versa

    Setup and Operation Slide the power button towards the front of the unit, hold it briefly, and release it. (For details, see the NEC Versa series Service and Reference Manual.) Figure Section 2-6 Turning Power On Disconnecting the Versa Disconnect the Versa and MediaDock as follows.
  • Page 29 Setup and Operation Turn power off as follows: Locate the power button on the Versa. Slide the power button towards the front of the unit, hold it briefly, and release it. Figure Section 2-7 Turning Power Off Remove the Versa from the MediaDock as follows. CAUTION: Turn off Versa power before dis- connecting the Versa and MediaDock.
  • Page 30 Setup and Operation Push the docking lever all the way to the back of the MediaDock. Figure Section 2-8 Releasing the Docking Lever Press both release buttons to unlock the locking latches on the front of the unit. Once the latches are released, the Versa pops up a little. Figure Section 2-9 Pressing the Release Buttons...
  • Page 31: Software Setup

    Setup and Operation The following figure shows the mechanics of the locking latch. Figure Section 2-10 Locking Latch During Release Lift the Versa up and off the MediaDock. SOFTWARE SETUP The first time the MediaDock is used with the Versa, the Versa’s software needs to be re- configured to recognize the MediaDock.
  • Page 32: Running The Acu

    If the user plans to operate the Versa M with a docking station that has other op- tions but no IDE drive or diskette drive, start with step 2. If the user does not plan to use the Versa M with an NEC Docking Station or Docking Station II, start with step 2.
  • Page 33: Running The Acu For The Versa V

    Setup and Operation 2-11 Shut off system power after boot up. Restart the system and press when the cursor changes to a blinking block to go back into the ACU. From the main ACU screen, press to access the time and date screen. Enter the appropriate time and date.
  • Page 34: Running The Acu For The Ultralite Versa, Versa E, And Versa P

    2-12 Setup and Operation CAUTION: Disable power management through the ACU when using the Versa V. If power man- agement features are enabled and the system is not used for the established time-out periods, the Versa V goes into Sleep mode. When the Versa V is docked on the MediaDock and enters Sleep mode, the system locks up.
  • Page 35: Creating A Start-Up Diskette

    Setup and Operation 2-13 Creating a Start-Up Diskette A start-up diskette lets you boot your computer with your current configuration. Errors in system files can sometimes keep the system from booting up. Create a start-up diskette as follows. (For details, see the MS-DOS user’s guide that came with the Versa.) If your system is in Windows, exit Windows.
  • Page 36: Running The Mediadock Setup Utility

    2-14 Setup and Operation Running the MediaDock Setup Utility This section describes how to use the MediaDock Setup utility. While running the utility, use the following options: To stop the installation, press To accept default settings, press Enter click “OK,” or click “Continue” at the prompts.
  • Page 37: Software Use

    Setup and Operation 2-15 The first audio screen tells you to close any applications that are running. If you followed the instructions given here, you already closed open applica- tions. Just click “Continue” to proceed. If you did not follow these instructions, click “Exit.” Go back to the beginning of this section, “MediaDock Setup Utility,”...
  • Page 38: Choosing A Configuration

    Mobile — Use this configuration to use the Versa by itself. Docked — Pick this configuration to use the Versa docked on an NEC Docking Station or NEC Docking Station II. (This option may not appear, depending on your system configuration.) Using the Audio Switcher Utility Follow these steps to use the Versa M Audio Switcher utility.
  • Page 39: Versa M Audio Switcher Welcome Screen

    Setup and Operation 2-17 Double click on the audio switcher icon. A Versa M Audio Switcher Welcome screen similar to the following appears. Versa M Audio Switcher Welcome to the Versa M Audio Switcher! This application will re-configure your Versa M Windows setup to use either the internal sound chip, or the sound chip in the MediaDock.
  • Page 40: Audio Switcher Dialog Box

    2-18 Setup and Operation A dialog box similar to the following appears and identifies the sound system se- lected. Versa M Audio Configuration The Versa M Audio is selected. Restart Windows You may select one of the bottom on the left side to (1) Restart the Win- Save Configuration dows to install the appropriate sound driver.
  • Page 41: Using Dos-Based Programs

    Setup and Operation 2-19 Using DOS-Based Programs Two sound control utilities are stored on your hard disk drive when you run the MediaDock Setup utility. When using applications that run from MS-DOS, you may need to change these sound settings. The following two utilities adjust the speaker volume and change the DMA and IRQ ad- dresses.
  • Page 42: Changing Irq And Dma Settings

    2-20 Setup and Operation The following example decreases the master volume to 3 and increases the wave volume to 14: ESSVOL /V:3 /W:14 When you finish using the DOS-based application, you do not need to reset the volume set- tings for Windows. At boot up, Windows specifies its own settings. Changing IRQ and DMA Settings Before changing these settings, check the documentation that came with the MS-DOS based application.
  • Page 43: Mediadock Controls

    Setup and Operation 2-21 MEDIADOCK CONTROLS The following describes MediaDock controls, see Figure Section 2-13. Volume Control — Controls the volume of the sound produced by the Medi- aDock. Pull the lever towards the front of the MediaDock to decrease sound; back to increase sound.
  • Page 44: Mediadock Connectors

    Line out port on the other audio system to record or play. Docking This 198-pin connector provides an interface for the optional NEC Versa Series Docking Station II or optional port replicator. Power This connector provides an interface for the AC adapter. The AC adapter is then connected to a wall outlet via the AC power cord.
  • Page 45: Versa Battery Charging

    AC power, and Versa power is turned off. CD-ROM USE The MediaDock ships with the CDR-250, NEC’s dual-Speed CD-ROM reader. The CD- ROM reader is assigned the next available drive letter. NOTE: The CD-ROM reader only works when the MediaDock is connected to AC power, the Versa is docked, and the Versa is powered on.
  • Page 46: Cd-Rom Reader Controls And Indicators

    2-24 Setup and Operation Dual-Speed CD-ROM features are shown in Figure Section 2-15. Descriptions of these features follow. Figure Section 2-15 CD-ROM Reader Controls and Indicators 2X speed lamp — shows that the reader is reading data at double speed. CD busy lamp —...
  • Page 47: Cd Loading

    Setup and Operation 2-25 CD Loading To insert a CD into the Dual-Speed reader, follow these steps. Press the stop/eject button. A CD tray emerges from the reader door. Figure Section 2-16 Pressing the Stop/Eject Button Put the CD, printed side up, into the circular impression in the tray. Figure Section 2-17 Loading a CD into the Reader...
  • Page 48: Audio Cds

    2-26 Setup and Operation Press the stop/eject button again. The reader automatically pulls in the tray. To remove a CD, simply press the stop/eject button and remove the CD when the tray slides out. Press the stop/eject button again to close the reader door. Audio CDs Before playing audio CDs for the first time, add the drivers as an audio option instructed in the next section “Adding the CD Audio Option.”...
  • Page 49: Playing Audio Cds

    Setup and Operation 2-27 Playing Audio CDs Follow these instructions to play audio CDs. (For more details, see the Windows user’s guide.) Insert a CD into the tray. Press the Stop/Eject button to open and close the tray. From Windows, double click on the Accessories program group. In Accessories, highlight and double click on the Media Player icon.
  • Page 50: Emergency Eject

    2-28 Setup and Operation Emergency Eject Use the following procedure to manually remove a disc from the CD-ROM reader if the eject function is disabled by software or a power failure occurs. Turn off Versa power and unplug the MediaDock. Manually open the dust door.
  • Page 51 Setup and Operation 2-29...
  • Page 52: Section 3 Options

    Section 3 Options This section provides installation procedures for the following MediaDock optional equip- ment: headphones external speakers microphone. NOTE: Use the ports on the MediaDock when connecting these options. MediaDock ports are easy to access. Headphones or External Speakers Follow these steps to connect headphones or external speakers to the MediaDock.
  • Page 53: Connecting Headphones

    Options Connecting Headphones Connect headphones as follows. Locate the headphone port on the MediaDock base. Figure Section 3-1 Headphone Port on the MediaDock Base Insert the headphone jack into the port. Connecting External Speakers Connect external speakers as follows. Check the instructions that came with the speakers to set up the speaker cables. Locate the headphone port on the MediaDock and plug in the speaker cable.
  • Page 54: Microphone Port

    Options Figure Section 3-2 Microphone Port Insert the microphone jack into the port. Turn on Versa power if it is not already on. NOTE: You can record only mono sound when using a microphone for recording with the Medi- aDock. If you experience audio feedback during use, move the microphone away from the Medi- aDock.
  • Page 55: Section 4 Troubleshooting And Repair

    Troubleshooting and Repair This section provides information on maintaining, troubleshooting and repairing the NEC Versa series MediaDock. SERVICE NEC service and information telephone numbers are listed in Table Section 4-1. Table Section 4-1 NEC Service and Information Telephone Numbers Service Call To order NEC spare parts In the U.S., call 1(800) 632-4525...
  • Page 56: Technical Support

    NEC Technologies Technical Support Center (TSC) provides an E-mail service for Internet users besides the support listed in Table Section 4-1. Technical questions regarding NEC Technologies products can be sent over the Internet system to TSC. The Internet address is as follows: tech-support@nectech.com.
  • Page 57: Ordering Information From Fastfacts

    Troubleshooting and Repair Ordering Information from FastFacts Order information from FastFacts as follows. Check that the fax machine is on. Locate the document part number. Using a touch-tone telephone, call 1-800-366-0476 (U.S. and Canada only). For international use, enter the international long distance access number, the U.S. country code, the U.S.
  • Page 58: Maintenance

    Troubleshooting and Repair MAINTENANCE This subsection contains general information for cleaning and checking the MediaDock. The unit requires cleaning and checking at least once a year and more often if operating in a dusty environment. No other scheduled maintenance is required. WARNING: Disconnect the AC adapter before performing any maintenance.
  • Page 59 Troubleshooting and Repair Do not use or store the MediaDock near chemicals. Avoid excessive vibration and shock. Dropping the MediaDock or knocking it over can cause serious damage. Keep the MediaDock away from machinery that generates strong electric or mag- netic fields.
  • Page 60: Troubleshooting

    Troubleshooting and Repair TROUBLESHOOTING This subsection provides information that helps isolate and repair system malfunctions at the field level. Step-by-step instructions on diagnosing and solving system hardware problems are provided first. Diagnosing and Solving Problems Table Section 4-2 summarizes problems that may develop during MediaDock operation and lists (in sequential order) suggested corrective actions.
  • Page 61: Remote Technical Support

    Follow these steps to prepare the system for remote support. A modem must be installed in the system and connected to a telephone line. With the system power off, insert the NEC Hardware Utilities diskette into the diskette drive. Turn on system power. A menu appears.
  • Page 62: Disassembly And Reassembly

    Troubleshooting and Repair DISASSEMBLY AND REASSEMBLY This subsection contains step-by-step disassembly procedures for the system. Reassembly is the reverse of disassembly. Each procedure is supported by a simplified disassembly illus- tration to facilitate removal. The detailed exploded-view diagram and parts lists for the sys- tem unit are shown later in this subsection.
  • Page 63: Top Cover Assembly

    Troubleshooting and Repair Top Cover Assembly The top cover assembly includes two plungers, and the docking cable. Remove the top cover assembly as follows. Orient the MediaDock in the working position (with the top cover assembly fac- ing you). Remove the four screws on the top cover assembly. Figure Section 4-1 Removing Top Cover Screws...
  • Page 64: Removing Bottom Screws

    4-10 Troubleshooting and Repair Turn the MediaDock over to access the bottom of the unit. Remove the five screws securing the top cover to the bottom of the chassis. Figure Section 4-2 Removing Bottom Screws Lift up the top cover assembly. Note that the docking cable attaches the top cover assembly to the sound board.
  • Page 65: Removing Docking Cable Screw

    Troubleshooting and Repair 4-11 Remove the screw securing the docking cable to the sound board (G8SEA). Figure Section 4-3 Removing Docking Cable Screw Lift off and remove the MediaDock top cover assembly.
  • Page 66: Locating Sound Board Connectors

    4-12 Troubleshooting and Repair Sound Board Remove the sound board (G8SEA) as follows. Remove the top cover assembly as previously described. Disconnect the following cables from the sound board. IDE cable (from connector J5 on the sound board) Line-out cable (from connector J7 on the sound board) power cable (from connector J9 on the sound board).
  • Page 67: Removing The Sound Board Screws

    Troubleshooting and Repair 4-13 Remove the seven screws that secure the sound board to the chassis. Lift out the sound board and remove it. Figure Section 4-5 Removing the Sound Board Screws...
  • Page 68: Power Amplifier Board

    4-14 Troubleshooting and Repair Power Amplifier Board Remove the power amplifier board as follows. Remove the following as previously described: top cover assembly sound board. Unplug the speaker cable from the red connectors on the power amplifier board. Figure Section 4-6 Unplugging the Red/Black Speaker Cable...
  • Page 69: Removing The Power Amplifier Board Screws

    Troubleshooting and Repair 4-15 Remove the three screws that secure the power amplifier board to the chassis. Lift out the board and remove it. Figure Section 4-7 Removing the Power Amplifier Board Screws...
  • Page 70: Assembly Handle, Right Latch, Left Latch

    4-16 Troubleshooting and Repair Assembly Handle, Right Latch, Left Latch Remove the MediaDock handle as follows. Remove the top cover assembly as previously described. Remove the two screws that secure the assembly handle to the chassis. Lift the handle up, and remove it. Figure Section 4-8 Removing Assembly Handle Screws Remove the right and left latches situated near the assembly handle as follows.
  • Page 71: Locating The Left Latch And Torsion Spring

    Troubleshooting and Repair 4-17 Locate the left latch. Lift the left latch and torsion spring out of the plastic insert. Repeat the procedure for the right latch and torsion spring. Figure Section 4-9 Locating the Left Latch and Torsion Spring...
  • Page 72: Cd Rom Reader

    4-18 Troubleshooting and Repair CD ROM Reader Remove the CD ROM reader as follows. Remove the top cover assembly as previously described. Disconnect the following cables from the CD ROM and the sound board: IDE cable (from connector J5 on the sound board) Line out cable (from connector J7 on the sound board) power cable (from connector J9 on the sound board).
  • Page 73: Removing The Cd Rom Screws

    Troubleshooting and Repair 4-19 Remove the four screws that secure the CD ROM reader to the chassis. Lift up and remove the CD ROM reader. Figure Section 4-11 Removing the CD ROM Screws...
  • Page 74: High-Range Speakers

    4-20 Troubleshooting and Repair High-Range Speakers Remove the high-range speakers as follows. Remove the following as previously described: top cover assembly assembly handle CD ROM reader. Disconnect the red and black speaker cables from the red connectors on the power amplifier board. Figure Section 4-12 Disconnecting the Speaker Cable...
  • Page 75: Removing The Yellow Clasp Connectors

    Troubleshooting and Repair 4-21 Remove the yellow clasp connector that attaches the red and black speaker cable to the mid-range speakers. Figure Section 4-13 Removing the Yellow Clasp Connectors Remove the two screws that secure the MediaDock handle to the base assembly. Lift off the handle.
  • Page 76: Removing Mid-Range Speaker Screws

    4-22 Troubleshooting and Repair Remove the two screws that secure each high-range speaker to the MediaDock handle. Lift each high-range speaker out of the handle insert. Figure Section 4-15 Removing Mid-Range Speaker Screws...
  • Page 77: Mid-Range Speakers

    Troubleshooting and Repair 4-23 Mid-Range Speakers Remove the mid-range speakers as follows. Remove the following as previously described: top cover assembly assembly handle CD ROM Reader. Remove the yellow clasp connectors that attach the red and black speaker cables to each mid-range speaker. Figure Section 4-16 Removing Speaker Cables from Mid-Range Speakers Remove the two screws securing each mid-range speaker to the base assembly.
  • Page 78: Illustrated Parts Breakdown

    4-24 Troubleshooting and Repair ILLUSTRATED PARTS BREAKDOWN This subsection contains the illustrated parts breakdown (IPB) and NEC part numbers for the MediaDock. Table Section 4-4 lists NEC part numbers. NOTE: In the U.S., call 1(800) 632-4525 to or- der NEC spare parts. To order options in the U.S., call your local sales office.
  • Page 79 Troubleshooting and Repair 4-25 Table Section 4-4 Versa Series MediaDock Field-Replaceable Parts* Item Description Part Number MediaDock Logo Plate 158-030660-001 Assembly Handle 158-050778-003 Base Assembly 158-050778-000 *Recommended Spares.
  • Page 80: Versa Series Mediadock Parts Breakdown

    4-26 Troubleshooting and Repair Figure Section 4-18 Versa Series MediaDock Parts Breakdown* ____________ This data was prepared March 1995. For an up-to-date listing of spare parts, please call FastFacts (800) 366-0476 and order document number 42181142...
  • Page 81: Appendix A Software Setup For Customized Disks

    Appendix A Software Setup for Customized Disks Use the setup procedures in this section under the following circumstances: You are using a hard disk other than the one that came with the Versa. You loaded or reloaded the operating system on the hard disk. In addition to the procedures in Section 2, software setup for customized drives requires that you modify the CONFIG.SYS and AUTOEXEC.BAT system files.
  • Page 82 Software Setup for Customized Disks MENUITEM=MEDIADOCK, MediaDock Configuration MENUDEFAULT=MOBILE,15 [MEDIADOCK] [MOBILE] NOTE: Final configuration file contents reflect the software and hardware loaded on or attached to your system. Therefore, the file will probably differ from the one shown here. Modify the CONFIG.SYS file as follows. At the DOS prompt, type the following and press Enter edit config.sys...
  • Page 83: Modifying The Autoexec.bat File

    Software Setup for Customized Disks Specify the default configuration and how many seconds the system waits be- fore using it. MENUDEFAULT=MOBILE,15 “menudefault” specifies the default configura-tion, which is Mobile. Specify the MediaDock configuration by replacing “Mobile” with “MediaDock”. “15” defines how many seconds elapse before the system activates the de- fault configuration.
  • Page 84 Software Setup for Customized Disks SET MOUSE=C:\MOUSE C:\MOUSE\NECMOUSE goto %CONFIG% :MOBILE :MEDIADOCK :END Modify the AUTOEXEC.BAT file as follows. From the DOS prompt, type the following and press Enter edit AUTOEXEC.BAT Scroll to the end of the file and position your cursor after the last line. If you lo- cate the line “:END”, position your cursor at the front of the line right before the colon.
  • Page 85: Appendix B System Files

    Appendix B System Files This appendix provides samples of a CONFIG.SYS and an AUTOEXEC.BAT file. The files shown reflect the contents of files after the MediaDock Setup utility is run. The contents of system files depend on the system’s software and hardware configuration. Because of this, the samples shown here probably differ from the one on your Versa.
  • Page 86: Autoexec.bat

    System Files rem configurations for Mobile or Docked. rem ================================================================= MENUITEM=MOBILE, Mobile Configuration MENUITEM=MEDIADOCK, MediaDock Configuration rem ================================================================= rem Change the following default value to reflect the most appropriate rem setting. The default timer is set to 0, modify this parameter to the rem appropriate value for your usage.
  • Page 87 System Files LOADHIGH C:\DOS\DOSKEY SET MOUSE=C:\MOUSE C:\MOUSE\NECMOUSE rem ==========================MENU================================== rem The following statement will obtain values from the CONFIG.SYS file rem for Mobile or MediaDock configurations. rem ================================================================= goto %CONFIG% :MOBILE rem ================================================================= rem Add any drivers, etc. to this section which are unique to the Mobile rem Configuration.
  • Page 88 Index Connecting the AC adapter, 2-1 Connecting the Mediadock, 2-3 Connecting the Versa, 2-2 Analog interface specifications, 1-9 Connector descriptions, 2-22 Audio Switcher utility, 2-16 Controls, 2-21 cancel button, 2-18 Creating a start-up diskette, 2-13 restart Windows button, 2-18 Creative labs sound blaster, 1-5 save configuration button, 2-18 use, 2-16 Diagnosing and solving problems, 4-6...
  • Page 89 Telephone numbers, 4-1 Microphone connection, 3-2 Tone control, 2-21 Mobile configuration, 2-16 Treble control, 2-21 Troubleshooting E-mail, 4-2 NEC communications assistant, 4-7 fax, 4-2 telephone numbers, 4-1 Troubleshooting and Repair, 4-1 Options, 3-1 Turning off power, 2-6 Turning on power, 2-5...
  • Page 90 Index-3 Versa P disassembly sequence, 4-8 Versa V ACU, 2-11 Volume control, 2-21 Wrist rest, 2-21...