Sonnet Crescendo G3 NuBus Installation Manual
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Sonnet Crescendo G3 NuBus Installation Manual

Processor upgrade card for nubus power macintosh
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Summary of Contents for Sonnet Crescendo G3 NuBus

  • Page 1 Processor Upgrade Card for NuBus Power Macintosh...
  • Page 2 Sonnet Technologies, Inc. Your rights to software distributed by Sonnet is governed by its accompanying software license agreement. Sonnet has made every effort to ensure the accuracy of this manual. Product specifications are subject to change without notice.

  • Page 3: Table Of Contents

    Power Computing 100 and 120 Installation Radius System 100 and 81/110 Installation Upgrading to Mac OS 9 and a G4 Learning About the Software Sonnet Processor Upgrade Extension Sonnet G4 Enabler 9 Nonvolatile RAM Patch G4 Firmware Patch G4 Firmware Patch Remover...
  • Page 4 This manual explains how to install the hardware and software for Crescendo NuBus processor upgrade cards so that you can accelerate your Power Macintosh ® This documentation assumes you have a working knowledge of the Macintosh ® and its operating conventions. If you are unfamiliar with the Macintosh, see your computer’s documentation.
  • Page 5 If you feel you are unable to install the computer hardware, contact a qualified computer technician. As you read the instructions you may notice that your Sonnet processor upgrade card may differ from those pictured. Support Note: If you are installing a G4 upgrade card, please refer to Chapter 8, “Upgrading to a Mac OS 9 and a G4”...
  • Page 7 7) Install Crescendo card into PDS slot 8) Replace case cover onto computer 9) Affix the Powered by Sonnet label to front of computer 10) Turn on your newly upgraded computer 11) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.

  • Page 8: Power Macintosh 6100, Performa 611X

    Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.
  • Page 9 Power Macintosh 6100, Performa 611X, and Workgroup Server 6150 Installation Shut Down and Open Computer 1. Shut down your Power Macintosh. If the computer has been on for any length of time, wait a few minutes for it to cool before beginning the installation.
  • Page 10 Chapter 1 Remove PDS Card Locate the PDS slot (Figure 3) located next to the ROM card. If there is a PDS card already installed (such as the 6100 DOS card), remove it. PDS slot ROM card CPU (with heatsink) Figure 3: Remove PDS card from PDS slot Remove Level 2 Cache Card If your computer contains a Level 2 cache card, remove it.
  • Page 11 1. Replace the case cover onto your computer (Figure 6). Figure 6: Replace case cover onto computer 2. Return the computer to your computing area and reconnect the power and peripheral cables. 3. Affix the Powered by Sonnet label to the front of your computer.
  • Page 12 Chapter 1 Turn On Computer 1. Turn on your Power Macintosh. Your newly accelerated machine should boot as normal. 2. If you are installing a Crescendo G4, see Chapter 8, “Upgrading to Mac OS 9 and a G4” for information about enabling AltiVec extensions in Mac OS and application software.
  • Page 13 10) Install bracket (with Crescendo and AV cards) into PDS slot 11) Replace case cover onto computer 12) Affix the Powered by Sonnet label to front of computer 13) Turn on your newly upgraded computer 14) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.
  • Page 14 Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.

  • Page 15: Power Macintosh 6100 Av Installation

    Power Macintosh 6100 AV Installation Shut Down and Open Computer 1. Shut down your Power Macintosh. If the computer has been on for any length of time, wait a few minutes for it to cool before beginning the installation. 2. Disconnect the power and peripheral cables from the back of the computer.
  • Page 16 Chapter 2 5. Move the computer to an area where you can freely work. 6. Open your Power Macintosh by unlatching the case cover (Figure 3) and set it aside. Figure 3: Unlatch and lift case cover from computer Remove AV Card Bracket 1.
  • Page 17 Power Macintosh 6100 AV Installation Disassemble AV Card from Bracket 1. Using a medium Phillips screwdriver, remove the screw that secures the AV card to the bracket (Figure 5). Set the screw aside. Unplug the AV card from the AV adapter. Figure 5: Remove screw that secures AV card to bracket Remove the Two Screws that Secure the Adapter Using a medium Phillips screwdriver, remove the two screws that secure...
  • Page 18 Chapter 2 Install Crescendo NuBus Processor Upgrade Card 1. Remove the Crescendo card from the anti-static package, making sure to handle the card by the edges (Figure 7). Your card may differ from what is pictured below. Figure 7: Remove Crescendo card from packaging 2.
  • Page 19 Power Macintosh 6100 AV Installation 4. Assemble the Crescendo with attached AV card onto the bracket. Hook the AV card onto the outer prong of the bracket as you slide the Crescendo card in between the metal runners (Figure 9). Verify that the inner prong of the bracket lines up and protrudes through the corner cutout on the AV card.
  • Page 20 Chapter 2 6. With the Crescendo and AV cards securely mounted onto the bracket, align the bracket over the PDS slot. Make certain the metal tab on the bracket slides into the inner slot on the side of the computer’s case (Figure 11).
  • Page 21 AV card (Figure 14). Figure 14: Reconnect video cable(s) to AV card 4. Reconnect the power and peripheral cables to the back of the computer. 5. Affix the Powered by Sonnet label to the front of your computer.
  • Page 22 Chapter 2 Turn On Computer 1. Turn on your Power Macintosh. Your newly accelerated machine should boot as normal. 2. If you are installing a Crescendo G4, see Chapter 8, “Upgrading to Mac OS 9 and a G4” for information about enabling AltiVec extensions in Mac OS and application software.
  • Page 23 Crescendo card into AV or HPV card 6) Replace case cover onto computer 7) Affix the Powered by Sonnet label to front of computer 8) Turn on your newly upgraded computer 9) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.
  • Page 24 PDS slot (Figure 1-Label A), you have an AV or HPV card. Since the Crescendo card installs into the PDS slot, you will need the AV/HPV Card Video Adapter Kit (Sonnet part number C61A-7181) to preserve the use of the AV or HPV card. If you purchased a video adapter kit, continue with the installation on the following page;...

  • Page 25: Power Macintosh 7100 Installation

    Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.
  • Page 26 Chapter 3 3. Open your Power Macintosh by first loosening the security screw (Figure 2, inset) on the back of the case with a large flatblade screwdriver; then, gently slide the case cover off the computer (Figure 2). Security screw Figure 2: Remove case cover from computer 4.
  • Page 27 Figure 4: Remove PDS card from PDS slot 2. To preserve the use of your AV or HPV card, you need the AV/HPV Card Video Adapter Kit (Sonnet part number C61A-7181). If you have the video adapter kit, continue with the installation instructions.
  • Page 28 Chapter 3 Install Crescendo NuBus Processor Upgrade Card Remove the Crescendo card from the anti-static package, making sure to handle the card by the edges (Figure 5). Your card may differ from what is pictured below. Figure 5: Remove Crescendo card from packaging •...
  • Page 29 Power Macintosh 7100 Installation AV/HPV Card Video Adapter Installation Adapter Kit Inventory Before installing the Crescendo NuBus processor upgrade card with the AV or HPV card, you will require the following items (Figure 7): Included with adapter kit: 1) Video adapter board 2) Video flex cable 3) Two 4-40 nuts 4) Support stand-off (required for 7100 only)
  • Page 30 Chapter 3 Temporarily Remove NuBus Cards from Computer Locate the NuBus slots (Figure 8). If any NuBus cards are installed, temporarily remove them so you have better clearance for installing the video adapter board. If you have three NuBus cards in your computer, you will only be able to reinstall two of them.
  • Page 31 Power Macintosh 7100 Installation • HPV Card – The HPV (High Performance Video) card has a single 15-pin monitor connector for a monitor and four onboard Video RAM (VRAM) slots (Figure 10). If you have the HPV card, continue with the instructions below. Four VRAM slots 15-pin monitor connector Figure 10: HPV card...
  • Page 32 Chapter 3 2. Orient the video adapter board in front of you as shown in Figure 12. Using a small Phillips screwdriver, remove the upper left stand-off from the adapter board (Figure 12). standoff Figure 12: Remove upper left standoff from video adapter board 3.
  • Page 33 Power Macintosh 7100 Installation 4. Secure the HPV card to the video adapter board with the two nuts (Figure 14) supplied with the adapter kit. Figure 14: Secure HPV card to video adapter board with nuts 5. Continue with the installation in the the section entitled, “Install Support Stand-Off Onto Crescendo Card”...
  • Page 34 Chapter 3 Affix AV Card to Video Adapter Board 1. Before attaching the AV card to the video adapter board, you need to bend the metal tab 90° at the end of the card with a small flatblade screwdriver (Figure 15) so it fits in its new location. bend tab from original position here 90°...
  • Page 35 Power Macintosh 7100 Installation 3. Secure the AV card to the video adapter board with the two nuts (Figure 17) supplied with the adapter kit. Figure 17: Secure AV card to video adapter board with nuts Install Support Stand-Off Onto Crescendo Card Place the Crescendo card in front of you with the pass-through slot facing upward.

  • Page 36: Install Crescendo Card

    Chapter 3 Install Video Flex Cable Onto Crescendo Card Install the video flex cable into the pass-through slot of the Crescendo card (note the notch in the cable for orientation). Press down on the outer edges of the cable until it is firmly seated (Figure 19). notch in cable pass-through slot Figure 19: Attach video flex cable to Crescendo card...
  • Page 37 Power Macintosh 7100 Installation Remove Access Port Cover From Middle NuBus Port 1. Remove the access port cover (if installed) from the middle NuBus port located at the back of the computer (Figure 21). Use your finger or a small flatblade screwdriver to push it out from the port as shown in Figure 21.
  • Page 38 Chapter 3 Install Video Adapter Board Into Middle NuBus Slot Support Note: IMPORTANT! – The video adapter board installs into the middle NuBus slot since it aligns with the proper clearance in the support framing of the computer's case. The video adapter board uses the middle NuBus slot as a holder;...
  • Page 39 Power Macintosh 7100 Installation Attach Video Flex Cable 1. Attach the connector on the video flex cable to the AV or HPV card (Figure 24). Gently press down on the outer edges of the connector to avoid pricking your fingers on the series of pins on top of the connector.
  • Page 40 Chapter 3 Replace Case Cover Onto Computer 1. Turn over the cover and locate the large cutout in the support framing (Figure 26). This cutout provides the necessary clearance required for the video adapter board to fit inside the computer. Take care when removing and replacing the cover onto your computer to prevent damaging the adapter’s video flex cable.
  • Page 41 Power Macintosh 7100 Installation 3. Make certain the cover lines up with the support runner of the computer’s case (Figure 28). The video adapter board should be firmly in place and not misaligned with the access port slot. If the video adapter board appears “tweaked”...
  • Page 42 1. Once the cover is in place, tighten the security screw on the back of computer’s case. 2. Reconnect the power and peripheral cables to the computer. 3. Affix the Powered by Sonnet label to the front of your computer. Turn On Computer 1. Turn on your Power Macintosh. Your newly accelerated machine should boot as normal.

  • Page 43: Av/Hpv Card Video Adapter Kit

    Crescendo card to AV or HPV card 6) Replace case cover onto computer 7) Affix the Powered by Sonnet label to front of computer 8) Turn on your newly upgraded Power Macintosh 9) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.

  • Page 44: Power Macintosh 8100, 8115, And Workgroup

    PDS slot (Figure 1-Label B), you have an AV or HPV card. Since the Crescendo card installs into the PDS slot, you will need the AV/HPV Card Video Adapter Kit (Sonnet part number C61A-7181) to preserve the use of the AV or HPV card. If you purchased a video adapter kit, continue with the installation on the following page;...
  • Page 45 Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.
  • Page 46 Chapter 4 3. Open your Power Macintosh by first loosening the four security screws on the back of the case with a large flatblade screwdriver and then gently slide the case cover off the computer (Figure 2). Figure 2: Slide case cover off computer 4.
  • Page 47 Video Adapter Kit (Sonnet part number C61A-7181). If you have the video adapter kit, continue with the installation instructions. If you do not have the video adapter kit, please contact Sonnet to obtain one. Remove Level 2 Cache Card If your computer contains a Level 2 cache card, remove it. If you are uncertain about whether you have a Level 2 cache card, or where it might be located, consult your computer’s documentation or see...
  • Page 48 Chapter 4 Install Crescendo NuBus Processor Upgrade Card Remove the Crescendo card from the anti-static package, making sure to handle the card by the edges (Figure 5). Your card may differ from what is pictured below. Figure 5: Remove Crescendo card from packaging •...
  • Page 49 Power Macintosh 8100, 8115, and Workgroup Server 8150 Installation AV/HPV Card Video Adapter Installation Adapter Kit Inventory Before installing the Crescendo NuBus processor upgrade card with the AV or HPV card, you will require the following items (Figure 7): Included with adapter kit: 1) Video adapter board 2) Video flex cable 3) Two 4-40 nuts...
  • Page 50 Chapter 4 Temporarily Remove NuBus Cards from Computer Locate the NuBus slots (Figure 8). If any NuBus cards are installed, temporarily remove them so you have better clearance for installing the video adapter board. If you have three NuBus cards in your computer, you will only be able to reinstall two of them.
  • Page 51 Power Macintosh 8100, 8115, and Workgroup Server 8150 Installation • HPV Card – The HPV (High Performance Video) card has a single 15-pin monitor connector for a monitor and four onboard Video RAM (VRAM) slots (Figure 10). If you have the HPV card, continue with the instructions below.
  • Page 52 Chapter 4 2. Using a small Phillips screwdriver, remove the three standoffs from the video adapter board. Locate the two subassembly standoffs from the video adapter packaging. Assemble and secure one subassembly standoff to the upper right corner of the board, and the other subassembly standoff to the lower left corner (Figure 12).
  • Page 53 Power Macintosh 8100, 8115, and Workgroup Server 8150 Installation Affix AV Card to Video Adapter Board 1. Before attaching the AV card to the video adapter board, you need to bend the metal tab 90° at the end of the card with a small flatblade screwdriver (Figure 14) so it fits in its new location.
  • Page 54 Chapter 4 3. Align the AV card directly over the video adapter board with the connector of the AV card facing upward (Figure 17). The holes on the AV card should align directly with the standoffs on the adapter board. Secure the AV card to the video adapter board with the two nuts (Figure 17) supplied with the adapter kit.

  • Page 55: Install Crescendo Card

    Power Macintosh 8100, 8115, and Workgroup Server 8150 Installation Install Crescendo Card Into PDS Slot Align the Crescendo card over the PDS slot on the logic board with the card’s heatsink facing toward the power supply (Figure 19). Gently press down until the card is firmly seated in the PDS slot.
  • Page 56 Chapter 4 2. Insert the access port cover into the PDS port (Figure 21). Figure 21: Insert access port cover into PDS port Install Video Adapter Board Into Middle NuBus Slot Support Note: IMPORTANT! – The video adapter board installs into the middle NuBus slot since it aligns with the proper clearance in the support framing of the computer's case.
  • Page 57 Power Macintosh 8100, 8115, and Workgroup Server 8150 Installation middle NuBus slot video adapter board (with attached AV or HPV card) Figure 22: Install video adapter board into middle NuBus slot Attach Video Flex Cable 1. Attach the connector on the video flex cable to the AV or HPV card (Figure 23).
  • Page 58 Chapter 4 3. IMPORTANT! – Before replacing the cover onto your computer, attach your monitor’s video cable to the AV or HPV card 15-pin monitor connector (Figure 24). Secure the cable by tightening the thumbscrews on the cable’s connector. Connecting the cable anchors the card in place while replacing the cover.
  • Page 59 2. Reconnect the power and peripheral cables to the computer. 3. Affix the Powered by Sonnet label to the front of your computer. Turn On Computer 1. Turn on your Power Macintosh. Your newly accelerated machine should boot as normal.
  • Page 61 7) Install Crescendo card into PDS slot 8) Replace case cover onto computer 9) Affix the Powered by Sonnet label to front of computer 10) Turn on your newly upgraded computer 11) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.
  • Page 62 Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.

  • Page 63: Workgroup Server 9150 Installation

    Workgroup Server 9150 Installation Shut Down and Open Computer 1. Shut down your Power Macintosh. If the computer has been on for any length of time, wait a few minutes for it to cool before beginning the installation. 2. Disconnect the power and peripheral cables from the back of the computer and move it to an area where you can freely work.
  • Page 64 Chapter 5 4. Lay the computer on a flat surface and touch the metal housing (Figure 2) of the drive sled to discharge any potential damaging static electricity. metal shielding of drive sled Figure 2: Internal components of Workgroup Server 9150 Remove Level 2 Cache Card If your computer contains a Level 2 cache card, remove it.
  • Page 65 1. Replace the cover and security screw onto your computer (Figure 5). Return your computer to your computing area and reconnect the power and peripheral cables. security screw Figure 5: Replace case cover onto computer 2. Affix the Powered by Sonnet label to the front of your computer.
  • Page 66 Chapter 5 Turn On Computer 1. Turn on your Power Macintosh. Your newly accelerated machine should boot as normal. 2. If you are installing a Crescendo G4/NuBus, see Chapter 8, “Upgrading to Mac OS 9 and a G4” for information about enabling AltiVec extensions in Mac OS and application software.
  • Page 67 6) Install Crescendo card into PDS slot 7) Replace case cover onto computer 8) Affix the Powered by Sonnet label to front of computer 9) Turn on your newly upgraded computer 10) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure outlined in the pages that follow.
  • Page 68 Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.

  • Page 69: Power Computing 100 And 120 Installation

    Power Computing 100 and 120 Installation Shut Down and Open Computer 1. Shut down your Power Computing 100 or 120. If the computer has been on for any length of time, wait a few minutes for it to cool before beginning the installation. 2.
  • Page 70 Chapter 6 Remove Level 2 Cache Card If your computer contains a Level 2 cache card, remove it. If you are uncertain about whether you have a Level 2 cache card, or where it might be located, consult your computer’s documentation or see Chapter 10, “Removing a Level 2 Cache Card.”...
  • Page 71 2. Return the computer to your computing area and reconnect the power and peripheral cables. 3. Affix the Powered by Sonnet label to the front of your computer. Turn On Computer 1. Turn on your Power Computing 100 or 120. Your newly accelerated machine should boot as normal.
  • Page 73 8) Install Crescendo card into PDS slot 9) Replace power supply brace 10) Replace case cover onto computer 11) Affix the Powered by Sonnet label to front of computer 12) To upgrade to AltiVec-enhanced software, see Chapter 8 For more complete instructions, follow the installation procedure...
  • Page 74 Install Software 1. If you are upgrading to Mac OS 9 as part of this installation, do so now. Sonnet recommends a clean/universal install of the Mac OS. Start up your computer from the Mac OS CD and double click the Mac OS Install application. In the Select Destination window, click the Options button and click the Perform Clean Installation check box that appears in the subsequent screen.

  • Page 75: Radius System 100 And 81/110 Installation

    Radius System 100 and 81/100 Installation 3. Open your computer by first removing the four security screws on the back of the computer (Figure 1) with a medium Phillips screwdriver; then, carefully remove the side panel. security screw security screw security screw security screw Figure 1: Remove case cover from computer...
  • Page 76 Chapter 7 Remove Level 2 Cache Card If your computer contains a Level 2 cache card, remove it. If you are uncertain about whether you have a Level 2 cache card, or where it might be located, consult your computer’s documentation or see Chapter 10, “Removing a Level 2 Cache Card.”...
  • Page 77 Radius System 100 and 81/100 Installation 3. Carefully install the Crescendo by first aligning the card over the PDS slot, lining the notch in the card with the corresponding notch in the PDS slot (Figure 5). notch in PDS slot Figure 5: Align notch in Crescendo card with notch in PDS slot 4.
  • Page 78 1. Replace the case cover and security screws onto your computer (Figure 8). Figure 8: Replace case cover onto computer 2. Return the computer to your computing area and reconnect the power and peripheral cables. 3. Affix the Powered by Sonnet label to the front of your computer.
  • Page 79 Radius System 100 and 81/100 Installation Turn On Computer 1. Turn on your Radius System 100 or 81/110. Your newly accelerated machine should boot as normal. 2. If you are installing a Crescendo G4, see Chapter 8, “Upgrading to Mac OS 9 and a G4” for information about enabling AltiVec extensions in Mac OS and application software.
  • Page 81 AltiVec-enhanced software. To correctly install the AltiVec libraries, make sure you perform the installation upgrade in the following order (if you have already installed Mac OS 9, the Sonnet software, and the Crescendo G4/NuBus processor upgrade card, skip to step 4).
  • Page 82 Chapter 8 3. Install Crescendo G4/NuBus – If you have a Power Macintosh 7100 or 8100 with an AV or HPV card along with the AV/HPV Card Video Adapter Kit, install it first; otherwise, install the Crescendo G4/NuBus into your computer’s PDS slot. 4.

  • Page 83: Sonnet Processor Upgrade Extension

    Extensions folder. Sonnet G4 Enabler 9 The Sonnet G4 Enabler 9 is needed only for G4 upgrade cards running Mac OS 9. This system enabler activates the Velocity Engine (AltiVec instructions). It is installed into your System folder.

  • Page 84: Metronome

    Chapter 9 Metronome Metronome is a software utility that provides information about the new processor card. This utility is placed into the Apple Menu Items Folder. It provides useful information to you and our technical support staff should you need to call us for any reason.
  • Page 85 If your computer contains a Level 2 cache card, it is recommended that you remove it. Your new Sonnet Crescendo NuBus processor upgrade card includes its own backside cache architecture so removing your old cache will have no negative effect on your computing experience.
  • Page 86 For the removal of the Level 2 cache card and the installation of the Crescendo NuBus processor upgrade card into a Power Macintosh 81XX, Sonnet strongly recommends that a qualified technician performs the installation. For these models, the logic board must first be removed from the computer in order to gain access to the Level 2 cache card.

  • Page 87: Removing A Level 2 Cache Card

    Removing a Level 2 Cache Card ROM card (located behind L2 cache card L2 cache card CPU (with heatsink) Figure 3: Level 2 cache card slot Level 2 Cache Card Removal – Power Computing 100 and 120 If there is a Level 2 cache card installed in your computer, it will be in the L2 Cache Slot, located in between the ROM card and the CPU with the large heatsink (Figure 4).
  • Page 88 Chapter 10 Level 2 Cache Card Removal – Radius System 100 and 81/110 If there is a Level 2 cache card installed in your computer, it will be in the L2 Cache Slot, located underneath the power supply and next to the ROM card(Figure 5).
  • Page 89 Computer has blank screen and no tone. Problem: Possible 1) The Crescendo card and/or video adapter board may Solutions: be improperly installed. Unplug the Crescendo from the PDS slot (and if applicable, video adapter board from middle NuBus slot) and reseat them in their slots.
  • Page 90 Chapter 11 Computer freezes at extension. Problem: Possible 1) Try unplugging the Crescendo card and reseating it in Solutions: the PDS slot. 2) You may have a conflict with an extension that loads early and changes low level processor control registers. To identify which extension is causing a problem, do the following: •...

  • Page 91: Troubleshooting Guide

    Troubleshooting Guide 2) Zap the PRAM (an area of the Mac’s memory that stores such information as preference settings). Restart your Mac and hold down the Command-Option-P-R keys until the computer chimes three times. After the computer finishes booting, open the Date & Time control panel from the Control Panels Folder (located inside the Systems Folder) and reset the date and time.

  • Page 93: Warranty

    Sonnet within 30 days of authorization and paying for associated shipping and insurance costs. Sonnet will pay the cost to ship repaired or replaced product(s) back to you. This warranty shall also apply to product(s) that replace defective product(s) but only for the original warranty period.

  • Page 95: Technical Support

    Before you call Sonnet Technical Support please • Check our website for the latest updates and online support files • Check your manual for helpful information When you call Sonnet technical support, have the following information available so our technical support staff can better assist you: •...

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