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Replacing the Power Supply and Fuses

12-3

014–002091

Unlatched

Pull out to unlatch.

Power supply latch

Computer unit

(top and left side covers removed)

Power supply

Figure 12-3 Releasing the Power Supply from the Computer Unit

4.

Lift the powersupply up and then out of the computerunit as shown in
Figure 12Ć4.

Computer unit

(top and left side covers removed)

Power supply

Figure 12-4 Removing the Power Supply

Return the failed power supply to Data General. Contact the Customer Support
Center, as described in the Preface, for information on returning the faulty part. To
install the new powersupply, continue to the next section, Installing the Power
Supply."

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Summary of Contents for AViiON 530 Series

Page 1: ...Customer Documentation P R O D U C T L I N E...

Page 2: ......

Page 3: ...xpanding and Maintaining AViiON 530 and 4600 Series Computers 014 002091 01 Copyright Data General Corporation 1991 1992 All Rights Reserved Printed in the United States of America Rev 01 June 1992 Or...

Page 4: ...Drawing Board CEO DXA CEO Light CEO MAILI CEO Object Office CEO PXA CEO Wordview CEOwrite COBOL SMART COMPUCALC CSMAGIC DASHER One DASHER 286 DASHER 286 12c DASHER 286 12j DASHER 386 DASHER 386 16c DA...

Page 5: ...WARNING Changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user s authority to operate the equipment This device complies with Part 15...

Page 6: ......

Page 7: ...nstructions for using the System Control Monitor SCM and suggestions for solving powerup problems NOTE This manual does not describe how to set up or install VMEbus option boards or the devices that c...

Page 8: ...should follow each time you add or replace an internal system component and describes how to respond to hardware problems Explains how to review system configuration parameters and provides instructi...

Page 9: ...nnected to the system board whose operating parameters conflict with the defaults listed in Chapter 2 and which are required for the first powerup read the appropriate instructions in Chapter 5 before...

Page 10: ...cted to your system refer to Setting Up and Installing VMEbus Options in AViiON Systems Internal CRUs An internal CRU Customer Replaceable Unit is any component you can replace that is housed inside t...

Page 11: ...the power supply line cord fan and provides general instructions for replacing a drive Lists physical electrical and environmental specifications of the subsystem Installing and Operating the Model 1...

Page 12: ...which provides operating system support to client computers across a local area network Some computers function as both stand alone and network servers The term client refers to any computer that rece...

Page 13: ...DG HELPS Lines are open from 8 00 a m to 5 00 p m your time Monday through Friday The center will put you in touch with a member of Data General s telephone assistance staff who can answer your questi...

Page 14: ...Preface xii 014 002091...

Page 15: ...es 2 3 Connecting the Keyboard AViiON 530 Series 2 5 Connecting the Mouse AViiON 530 Series 2 6 Connecting a Local Area Network Cable 2 8 Connecting Asynchronous Devices 2 10 Connecting Synchronous De...

Page 16: ...nging the Keyboard Language 5 12 Changing the Screen Saver Timeout 5 14 Changing Modem Port Parameters 5 15 Changing the Modem Port Baud Rate 5 16 Changing the Modem Port Character Size 5 17 Changing...

Page 17: ...ory Modules 8 6 Chapter 9 Adding or Replacing a CPU Complex and System Board Options Adding or Replacing a CPU Complex Board 9 2 Removing a CPU Complex Board 9 2 Specifying CPU Configurations 9 4 Inst...

Page 18: ...s Storage Options A 5 Power Subsystem Specifications A 6 Workstation Peripherals Specifications AViiON 530 Series A 8 Integrated I O Connectors and Signals A 11 Appendix B Using the System Control Mon...

Page 19: ...2 SCSI Device Identification Numbers 7 8 8 1 Valid Memory Configurations 8 4 A 1 Internal Component Current Requirements for AViiON 530 and 4600 A 7 B 1 SCM Line Editing Features and Keyboard Control...

Page 20: ...ecting Devices to the Computer Unit Serial Ports 2 11 2 10 Connecting a Synchronous Device to the Computer Unit 2 12 2 11 Connecting a Parallel Printer to the Computer Unit 2 13 2 12 AViiON 530 and 46...

Page 21: ...5 7 6 Removing Brackets from Drives 7 6 7 7 Example of Recommended SCSI ID Settings 7 8 7 8 Bracket Mounting Holes for Drives 7 9 7 9 Attaching Brackets to Drives 7 10 7 10 Removing or Replacing a Fil...

Page 22: ...9 15 9 19 Releasing the Graphics Monitor Connectors from the Computer Bulkhead 9 16 9 20 Removing the Board Retaining Screws 9 17 9 21 Separating the Interboard Connectors 9 17 9 22 Removing the Grap...

Page 23: ...r Unit 12 3 12 4 Removing the Power Supply 12 3 12 5 Setting the Voltage Selection Switch 12 4 12 6 Inserting the Power Supply into the Computer Unit 12 5 12 7 Securing the Power Supply to the Compute...

Page 24: ...Contents xxii 014 002091...

Page 25: ...ms support a variety of configurations AViiON 4600 series computers function primarily as the basis of multiuser or server systems AViiON 530 computers add graphics options to the same basic system to...

Page 26: ...ver not included One integrated NCR small computer system interface SCSI controller for internal maximum of four and external bus maximum of seven SCSI mass storage devices One central processing unit...

Page 27: ...roller One 24 bit Z buffer board for enhanced graphics performance AViiON 530 series Mass Storage Devices Maximum of four total of the following Removable media devices maximum of two 1 4 inch cartrid...

Page 28: ...88 6589 reel to reel SCSI tape drives 3 synchronous devices per VSC 3 controller 16 asynchronous devices per VAC 16 controller 255 asynchronous devices per VDA 255 adapter AViiON 4600 series Controlle...

Page 29: ...l and Connectors About the System Console AViiON 4600 Series The term system console refers to a terminal with a keyboard that receives powerup diagnostic test messages and from which you bring up you...

Page 30: ...torted pressing the Degauss switch demagnetizes the monitor screen and clears any associated distortion If you did not order Data General s Model G6487 graphics monitor you can use another graphics mo...

Page 31: ...LAN VME LAN Controller with a connector for a second Ethernet LAN transceiver Supplements the Ethernet connection managed by the integrated LAN controller s on the system board and optional I O expans...

Page 32: ...ou complete the Installation Checklist Figure 1 9 at the end of this chapter before proceeding with any of these installation procedures Before You Start Before setting up your system you need to prep...

Page 33: ...one by one and remove the equipment As you do so inspect the equipment carefully for visible damage CAUTION Handle your computer equipment carefully do not drop or jar it Lift by grasping firm surface...

Page 34: ...hown Pivot edge Figure 1 5 Positioning the Computer Unit Upright Tilt the computer unit on the packing tray edge opposite the shipping tray Slide the shipping tray out from under the foam and cardboar...

Page 35: ...one side and balance the stand legs beside the cut outs on the packing tray foam A Push down Pull up Pull out Repeat the process illustrated in A on the opposite side to release the entire computer u...

Page 36: ...uffixes Table 1 1 lists voltage suffixes by country for your computer unit power cord and for graphics monitor power cords Verify that the voltage for both is appropriate for your site Table 1 1 Volta...

Page 37: ...packaged separately with the device Use Table 1 2 to record the cables you received for integrated system components With the exception of the asynchronous adapter cables you receive only those cables...

Page 38: ...78E005 10 ft 3 05 m cable 005 037724 15378E010 15 ft 4 6 m cable 005 036625 15378E015 Asynchronous 9 to 25 pin Adapter Cables 005 038420 N A Synchronous Devices 6 ft 1 83 m EIA RS 232 cable 005 032917...

Page 39: ...ap outlines the path we recommend that you follow through the installation documentation The Installation Checklist on the following page summarizes the hardware and software installation manuals you...

Page 40: ...grated LAN s DG Token Ring Local Area Network Installation Guide for information about installing token ring network hardware Using AViiON System Diagnostics for information about using the hardware a...

Page 41: ...an overview of the computer system hardware components refer to Chapter 1 CAUTION Do not apply power to the computer unit while setting up your computer system Refer to Chapter 3 in this manual for p...

Page 42: ...ll need a small flat head screwdriver to complete these steps Refer to Figure 2 1 as you perform the first three steps 1 Align the holes in the 9 pin end of the asynchronous adapter cable to the pins...

Page 43: ...supports different terminal characteristics refer to Chapter 5 for information about changing the console port parameters after your first powerup NOTE SCM menus refer to the port labeled RS232 A as t...

Page 44: ...trips near the connector ends Connect the red cable to the R monitor connector the green cable to the G MONO connector and the blue cable to the B connector as shown in Figure 2 3 Turn the ends of the...

Page 45: ...4 illustrates how to connect the monitor cord R G B H V FUSE Monitor rear view Figure 2 4 Connecting the Color Monitor Power Cord Connecting the Keyboard AViiON 530 Series Follow these steps to conne...

Page 46: ...steps to connect the mouse device to the computer unit Reverse the order of these instructions to remove a faulty mouse in order to replace it CAUTION Do not try to remove or replace your mouse while...

Page 47: ...he left for left handed use 3 Attach the female end of the mouse extension cable to the end of the mouse cable then plug the other end of the extended mouse cable into the rear panel of the computer u...

Page 48: ...t installing VMEbus options AViiON 530 or 4600 series systems use the following cables to connect an integrated Ethernet LAN to the rear panel connector s Cable Cable Cable type part number model numb...

Page 49: ...clip mounts on the cable can pass through then push the cable firmly into the connector 3 Once the cable and clip mounts are secured to the connector slide the clip using your screwdriver or a compar...

Page 50: ...driver or similar tool to complete these steps Refer to Figure 2 9 as you perform the first three steps 1 Plug the 9 pin female end of the asynchronous adapter cable into one of the three male connect...

Page 51: ...to ports RS232 A RS232 B and RS232 C have the following characteristics 9600 baud 8 data bits No parity ANSI character set Enabled flow control NOTE These default settings are applied to all three as...

Page 52: ...ft Synchronous modem 005 032917 15290E006 6 005 032918 15290E015 15 005 032919 15290E025 25 1 Plug one end of the synchronous communication cable into the COM A or COM B connector on the back of the...

Page 53: ...LPT1 005 033762 15293E030 30 interface 1 Plug the 25 pin end of the printer cable into the parallel printer connector on the back of the computer unit as shown in Figure 2 11 Attach the printer cable...

Page 54: ...led If a large black plug occupies the rear panel connector s labeled SCSI and you have no external SCSI devices you can skip this section and continue with the next section Connecting the Computer Un...

Page 55: ...aight down or straight up into the brackets on the terminator plug as shown in Figure 2 14 Your vertical pressure will push the clips into place do not squeeze or pull the clips out of shape 4 Push th...

Page 56: ...Country 120 volt 109 996 US 100 volt 109 996 1 US Canada 240 volt 109 813 5 UK1 240 volt 109 809 6 Australia 220 volt 109 812 7 Europe2 220 volt 109 811 8 Italy 220 volt 109 815 9 Denmark 220 volt 10...

Page 57: ...ystem hardware continue with the steps in Chapter 3 to ensure that the computer system starts properly to become familiar with powerup procedures and to verify that the computer system hardware passes...

Page 58: ...Setting Up Your Computer System 2 18 014 002091...

Page 59: ...p your system and describe what you should do the first time you start up your AViiON 530 or 4600 series computer Once you install and customize your operating system the sequence of events and displa...

Page 60: ...l Figure 3 1 Monitor Power Switch 2 If you have a Peripheral Housing Unit PHU a combined storage subsystem CSS2 DC or another external peripheral unit connected to your computer system turn on power t...

Page 61: ...Chassis Front Panel Diagnostic LED Power off O Power on l AViiON Figure 3 3 Computer Unit Power Switch and LED Power On Indicator 5 Watch the system console or graphics display monitor on an AViiON 5...

Page 62: ...AViiON 530 series If your display does not appear as described turn power off to the computer unit to the graphics or nongraphics console and to all connected peripherals wait approximately one minut...

Page 63: ...up testing completes Your screen display indicates the disk and file that your computer system is attempting to boot as follows Booting sd ncsc 0 root dgux installer i What happens next depends on whe...

Page 64: ...o the way you set up your system hardware Then try to boot the DG UX installer operating system manually by typing the following command line at the SCM prompt SCM If the DG UX installer operating sys...

Page 65: ...your system has simply failed to boot the DG UX installer operating system Proceed now to your operating system documentation for installation instructions For information about the SCM configuration...

Page 66: ...sks You may also want to power down if your computer system is experiencing intermittent errors often the process of restoring hardware components to the powerup state resolves temporary problems or i...

Page 67: ...operating system is running may result in lost data Always try to shut down your operating system before resetting your computer system Computer Unit Chassis Rear Panel RESET ABORT Figure 3 4 Computer...

Page 68: ...witch by using the SCM RESET command while at the SCM prompt as follows SCM or SCM Restarting Your System Each time you turn power on your system goes through powerup testing and its automatic boot se...

Page 69: ...systems housed outside the computer unit you will need the information in the Connecting an External SCSI Bus to the Computer Unit Rear Panel section of this chapter to connect those devices to your c...

Page 70: ...ed as Controller 1 The second controller supports a bus extending from the connector marked SCSI B on the rear panel Each SCSI bus in your system can support a total of seven devices housed internally...

Page 71: ...installed devices mounted either inside the computer unit or mounted inside a mass storage housing unit the SCSI ID numbers are already set If you add or replace devices anywhere on the SCSI bus you m...

Page 72: ...operating system allows the configuration of any SCSI device at any unique and valid SCSI device ID number However other software such as device drivers could limit the use of certain device ID numbe...

Page 73: ...ge drives Before you connect the SCSI bus cable to your computer unit make certain each device on the bus has a unique SCSI ID if you notice a conflict you will need to reassign device identifications...

Page 74: ...roller and a bus connector SCSI B that supports an external SCSI bus with a cable maximum of 18 6 feet Only 1 foot of the 19 6 foot cable maximum resides within the AViiON 530 or 4600 series computer...

Page 75: ...y an external terminator plug to terminate the SCSI bus if your drive does not have an external terminator and will be physically positioned as the last drive on the SCSI bus you must install bus term...

Page 76: ...A Slot Device SCSI Adapter Board half height left half height right full height half height left half height right Cable Length 4 75 feet Total Cable Length 19 6 feet maximum full height External Mas...

Page 77: ...h 4 75 feet Total Cable Length 19 6 feet maximum full height External Mass Storage Devices external connector port B Drive Type SCSI ID Device Total Cable Length 19 6 feet maximum Cable Length x x x 3...

Page 78: ...ore you begin physically installing your SCSI bus and SCSI devices plan your cabling scheme s and assign SCSI ID numbers to each device according to the rules described in the preceding sections of th...

Page 79: ...licts with your SCSI bus plan NOTE Each SCSI drive or SCSI adapter board located in a mass storage subsystem must have its own unique ID number 3 Refer to the device specific documentation for each dr...

Page 80: ...I cable Refer to your device specific documentation for instructions and then install each device along the bus Terminating the SCSI Bus Make certain to properly terminate each SCSI bus on your system...

Page 81: ...slot marked SCSI B will not contain a connector Figure 4 7 AViiON 530 and 4600 Series External SCSI Connectors After you verify that the cable lengths and SCSI IDs in your configuration adhere to the...

Page 82: ...shaped connector and gently insert the cable in the rear panel connector as shown in Figure 4 9 Connector lines pins 1 50 Rear panel connector female SCSI bus cable Bus connector male Figure 4 9 Plugg...

Page 83: ...o complete your installation and connect the ac power cord Then continue with Chapter 3 Starting and Stopping Your Computer System for instructions on powering up a system with external peripherals If...

Page 84: ...Setting Up and Installing a SCSI Bus 4 16 014 002091...

Page 85: ...enus and information about using them The rest of this chapter describes how to use menu items to accomplish common tasks Summary of Menus and Menu Conventions You access all SCM menus from the View o...

Page 86: ...n 1 Change default system boot path 2 Change console parameters 3 Change modem port parameters 4 Change mouse parameters 5 View system configuration 6 Change VME A24 configuration 7 Return to previous...

Page 87: ...he SCM begins an automatic boot sequence after powerup testing completes The SCM uses the default system boot path to find the automatic boot device It uses this same default system boot path whenever...

Page 88: ...k name dir file Boot device specification first stage boot File path second stage boot Figure 5 2 Full Boot Path Format NOTE The syntax for booting over a LAN is slightly different refer to the sectio...

Page 89: ...ating system You can use this second stage or file path argument to specify any executable file or program parameter such as run level Refer to Appendix B for details For example the file path refers...

Page 90: ...ally specify the Internet address of the server system For example the following boot path specifies the server at Internet address on the integrated Ethernet LAN Examples of Valid Boot Paths NOTE The...

Page 91: ...ifferent LANs managed by an integrated and a VME Ethernet controller SCM b hken 128 111 5 6 Using the Change Default System Boot Path Menu To view initialize change and optionally boot the default boo...

Page 92: ...boot path 6 To boot type and press New Line Do you want to boot N Y The next message you see is from the program you booted Changing Console Parameters Items on the Change Console Parameters menu allo...

Page 93: ...ion of keyboard control sequences Changing the System Console Baud Rate While in the View or Change System Configuration menu type and press New Line to select item 2 Change console parameters The sys...

Page 94: ...s the Change Console Parameters menu with the current value in brackets next to item 2 Change character length Use item 2 to change the default character size for your system console port The default...

Page 95: ...nt value in brackets next to item 3 on the Change Console Parameters menu Use item 3 Change async console mode to change the default character code setting for the system console port The default char...

Page 96: ...you can use item 4 Change flow control to enable or disable the default flow control setting while in the SCM The system displays the current value in brackets on the Change Console Parameters menu Ch...

Page 97: ...lish 2 Type and press New Line to select item 5 Change console language The system displays the Change Console Language menu as follows Change console language 1 U S English 2 German 3 U K English 4 F...

Page 98: ...e Danish Norwegian Portuguese NOTE When you initialize a keyboard language using item 10 Other the console language remains U S English within the SCM however the SCM passes the alternate language typ...

Page 99: ...a new prompt where you enter the number of minutes you want the monitor screen to remain on before it goes blank Enter new timeout value 5 You return to the Change Console Parameters menu with the new...

Page 100: ...the appropriate section below Changing the Modem Port Baud Rate The default baud rate for the modem port is 1200 baud The system displays the current baud rate in brackets Refer to the documentation t...

Page 101: ...2 7 bit even parity 3 7 bit odd parity 4 7 bit mark parity 5 7 bit no parity 6 Return to previous screen Current character size is 8 bit no parity Enter choice s The next time you reset or restart you...

Page 102: ...It shows memory module numbers for each available slot and lists whether the slot contains a memory module or not The following example shows the memory configuration display for a computer with one p...

Page 103: ...oads and verifies the MAD and VAD to default values The Change VME A24 configuration menu allows you to change this default A24 space mapping An A24 board that directs data transfers between itself an...

Page 104: ...Change VME A24 configuration 1 VME A24 Page 0 DTB Slave Mode VME to MBUS 2 VME A24 Page 1 DTB Master Mode MBUS to VME 3 VME A24 Page 2 DTB Slave Mode VME to MBUS 4 VME A24 Page 3 DTB Master Mode MBUS...

Page 105: ...this chapter explain how to open and close the computer unit NOTE For information on the periodic maintenance of individual system components such as tape disk and diskette drives refer to the device...

Page 106: ...ding Electrostatic Discharge ESD Damage so that you do not damage the replacement or add on CRU NOTE If you have determined that the problem is in the peripheral housing unit PHU refer also to the man...

Page 107: ...output If the new configuration exceeds system power limits you will need to eliminate some part of the proposed system This section explains how to calculate and compare the necessary power informati...

Page 108: ...d by each power source continue verifying your power requirements by calculating the wattage total for the planned system 4 Multiply the number of volts from each dc power source 5 12 and 12 by the co...

Page 109: ...1 5 NA 7 3 5 diskette 0 51 1 0 NA 8 VME options 9 slot 1 VSC 3 sync controller 3 4 07 07 10 slot 2 VAC 16 async controller 4 5 25 25 11 SCSI adapter board for Diskette 07 12 13 14 Power Supply Limits...

Page 110: ...te 0 51 1 0 NA 8 VME options 9 slot 1 VSC 3 sync controller 3 4 07 07 10 slot 2 VAC 16 async controller 4 5 25 25 11 SCSI adapter board for Diskette 07 12 13 14 Power Supply Limits must exceed Calcula...

Page 111: ...V Total amperes max 12 V Total amperes max 12 V Total amperes max Wattage volts x amperes drawn 5 V wattage total 5 x A W 12 V wattage total 12 x A W 12 V wattage total 12 x A W Power supply output wa...

Page 112: ...ou remove covers and panels from the equipment The chapters on adding or replacing a subassembly list required tools and materials at the beginning of the procedures After you remove a cover or panel...

Page 113: ...n you install new or replacement devices in your system you often need to specify configuration parameters by setting jumpers and or switches on the individual devices This section explains how to phy...

Page 114: ...ushing jumpers straight onto the proper pins then push the jumper completely onto the pins with your finger if necessary You should not need to force a jumper into place if you install the proper jump...

Page 115: ...driver to open the computer unit The following steps tell you how to remove the side and top covers from the computer unit s housing Removing the Side Covers 1 Power down the computer system Refer to...

Page 116: ...91 Computer unit right side Loosen fastener 1 4 turn Figure 6 5 Loosening the Side Cover Fasteners 4 While supporting the side cover lift it up and away from the computer unit as shown in Figure 6 6 C...

Page 117: ...down the computer system Refer to the Shutting Down Your Computer System section of Chapter 3 for the proper procedure to power down the computer system WARNING To avoid electrical shock or equipment...

Page 118: ...uter Unit This section tells how to reinstall the computer unit s top and side covers You must install the top cover before you install the side covers Installing the Top Cover To reinstall the top co...

Page 119: ...gure 6 9 Installing the Top Cover Installing the Side Covers After installing the top cover follow the steps below to reinstall one or both side covers You will need a coin or a large flat blade screw...

Page 120: ...re 6 11 Installing the Side Covers 4 Using a coin or screwdriver turn the two fasteners one quarter turn clockwise as shown in Figure 6 12 to lock the cover in place Computer unit right side Tighten f...

Page 121: ...ower cord into the receptacle on the back of the computer unit as shown in Figure 6 13 Power cord Computer Unit Rear Panel Figure 6 13 Connecting the Computer Unit s Power Cord 7 Plug the other end of...

Page 122: ...Expanding and Maintaining Your Computer System 6 18 014 002091...

Page 123: ...UX System Documentation lists the manuals that support the mass storage devices available in AViiON 530 and 4600 series systems NOTE Before you add or replace any mass storage device refer to Chapter...

Page 124: ...height Digital audio tape 6762 Half height 1 Some versions include 3 1 2 to 5 1 4 inch conversion brackets Mass Storage Device Locations Your computer unit has the two slots for internal SCSI drives a...

Page 125: ...eplacement drive 4 Attach the brackets to the replacement drive 5 Reinstall the drive assembly in the computer unit Removing a Drive Assembly Before you can remove a drive assembly you should remove t...

Page 126: ...el Device connectors SCSI bus internal cable SCSI device power cables Figure 7 2 SCSI Bus Ribbon Cable and Device Power Connectors I O bus cable Typical diskette drives SCSI adapter board Computer uni...

Page 127: ...drive power cable connectors Typical diskette drives Figure 7 4 Unplugging the Power Adapter Cable from a Diskette Drive 4 Remove the eight screws and washers securing the drive assembly to the comput...

Page 128: ...om the drive you are replacing follow the steps below You will need a medium 2 Phillips screwdriver 1 Remove the eight screws and washers four for each bracket that secure the drive to the brackets If...

Page 129: ...trol option jumpers or switches for sequential drive motor start The drive will then delay starting up its spindle motor a number of seconds a multiple of the SCSI ID number when you power up your sys...

Page 130: ...ond drive 5 Third drive 6 1 A CD ROM drive can have any SCSI ID except 0 or 4 2 Or as the next disk in sequence Second disk drive SCSI ID 1 Second tape drive SCSI ID 5 First tape drive SCSI ID 4 First...

Page 131: ...the bracket with the holes in the side of the drive A half height drive fills half of the bracket Figure 7 8 shows the mounting holes for for each type of drive 4 3 2 1 1 6 2 3 4 332 Mbyte disk 2 or 4...

Page 132: ...ion Completing the Drive Assembly Installation to complete the installation of the drive Completing the Drive Assembly Installation To complete the installation of the drive follow the steps below You...

Page 133: ...the screwdriver to release the plastic tab on the filler panel Once you do this the filler panel will pop out 2 Position the drive in the slot so that its back connector end faces toward the center of...

Page 134: ...information on the connector locations refer to the manual for installing the drive NOTE You can plug the cable in only one way the connector on the power cable has beveled edges to match the power co...

Page 135: ...u are installing the first diskette drive you will not have installed the SCSI adapter board yet Figure 7 13 Plugging the I O Bus Cable into a Diskette Drive If you installed the first diskette drive...

Page 136: ...to the section Installing the SCSI Adapter Board If you are replacing the SCSI adapter board continue to the next section Removing the SCSI Adapter Board Removing the SCSI Adapter Board Before you can...

Page 137: ...e from the SCSI Adapter Board 3 Remove the two screws securing the SCSI adapter board to the front of the left side of the computer unit as shown in Figure 7 16 SCSI adapter board Computer unit top an...

Page 138: ...ives CAUTION Unless you are properly grounded you can discharge static electricity and damage components in the system To install the SCSI adapter board in the computer unit follow the steps below 1 P...

Page 139: ...side covers as described in the section Closing the Computer Unit in Chapter 6 Replacing the Terminator Plug The computer uses a SCSI bus terminator plug that ships installed in the external SCSI conn...

Page 140: ...plug the terminator plug from the SCSI bus connector Terminator plug Spring clip SCSI connector on computer unit or subsystem Spring clip Figure 7 19 Unplugging and Plugging in the SCSI Bus Terminator...

Page 141: ...7019 modules provide 16 megabytes Both models support Error Checking and Correction ECC rather than byte parity error detection Figure 8 1 shows how to identify the memory modules supported by your s...

Page 142: ...he right Never leave a connector empty between memory modules You must configure memory modules in vertical pairs on the system board Odd numbers of modules will not work in AViiON 530 or 4600 series...

Page 143: ...ple assume memory modules occupy connectors 0 through 7 You can remove the memory module in connector 3 only after connectors 5 and 7 are unoccupied To replace the module in connector 3 you must first...

Page 144: ...ve any memory modules you must remove the computer unit s right side cover and attach the ESD wrist strap as described in the Opening the Computer Unit section of Chapter 6 CAUTION Unless you are prop...

Page 145: ...Memory module System board side view Figure 8 4 Releasing the Memory Module Locking Tabs 2 With the locking tabs released raise the memory module to about a 20 30 angle as shown in Figure 8 5 then gen...

Page 146: ...stall a new memory module Installing Memory Modules Before you can install any memory modules you must remove the computer unit s right side cover and attach the ESD wrist strap as described in Chapte...

Page 147: ...emory module Insert module into connector at an angle then push left to lock in place System board Figure 8 6 Installing the Memory Module in the Connector Repeat steps 1 and 2 to install or reinstall...

Page 148: ...Adding or Replacing Memory Modules 8 8 014 002091...

Page 149: ...on restraints described in Chapter 6 your system can also include a second CPU complex an Input Output I O expansion board and an 8 bit or 24 bit graphics controller board Systems with a graphics cont...

Page 150: ...mplex board used in AViiON 530 and 4600 series systems 88100 88200 88200 AV530 4600 4620 Figure 9 2 AViiON 530 and 4600 Series CPU Complex A CPU complex board contains one Motorola 88100 central proce...

Page 151: ...unded you can discharge static electricity and damage components in the system To remove the CPU complex board use the following steps You will need a medium Phillips screwdriver 1 Remove the two scre...

Page 152: ...hapter 10 Replacing the System Board Otherwise continue to the next section Specifying CPU Configurations before installing the new CPU complex board Specifying CPU Configurations Your system uses jum...

Page 153: ...CMMUs Figure 9 6 CPU Configuration Jumpers on the System Board NOTE Incorrectly configured system and CPU complex boards will cause your system to fail powerup Two CPU complex boards within a single...

Page 154: ...only CPU complex Jumper installed 88200 88200 88200 88200 88100 88200 88200 First or only CPU complex Second CPU complex Jumper installed First or only CPU complex AV 4605 and 4625 CPU designator jum...

Page 155: ...ticular care when handling the AV4605 4625 CPU complex do not apply pressure to the clear plastic that covers the 88100 88200 components NOTE When you install two CPU complex boards attach the first c...

Page 156: ...se system includes a Small Computer System Interface SCSI controller and an Ethernet LAN controller integrated onto the system board This section describes how to add or replace an Input Output I O ex...

Page 157: ...u must prepare a worksite remove the computer unit s right side and attach the ESD wrist strap as described in Chapter 6 Expanding and Maintaining Your Computer System CAUTION Unless you are properly...

Page 158: ...02091 Computer unit top and right side cover removed System board SCSI B bus cable Figure 9 11 I O Expansion Board SCSI Ribbon Cable 3 Remove the two screws that secure your I O expansion board to the...

Page 159: ...connectors on the back of the board from the connectors on the system board as shown in Figure 9 13 CAUTION Grasp the board at its edges to avoid damaging any components on the board System board brac...

Page 160: ...g an I O Expansion Board Before you can install an I O expansion board you must prepare your worksite remove the computer unit s right side and attach the ESD wrist strap as described in Chapter 6 Exp...

Page 161: ...board CAUTION If you need to set the option board down put it back inside the antistatic shipping bag 3 Position the Ethernet LAN connector in the openings provided by the system board bracket and th...

Page 162: ...the Computer Unit Bulkhead To install a replacement I O expansion board or to reinstall one removed for access to the system board skip Step 5 through Step 7 and continue with Step 8 To install a new...

Page 163: ...es without altering the cable fold and replace the cable clamp over all three cables Figure 9 18 shows how to properly install the SCSI B ribbon cable 8 Attach the ribbon cable from the SCSI B connect...

Page 164: ...ther diagnostic utilities Adding or Replacing a Graphics or Z Buffer Board 530 series This section explains how to add a graphics or z buffer board to your computer unit and to replace a failed graphi...

Page 165: ...er boards follow the steps below You will need a medium Phillips screwdriver If you are installing a graphics controller board you might also need a flat blade screwdriver and a medium sized adjustabl...

Page 166: ...3 Separate the interboard connector on the back of the top board from the interboard connector on the board behind it as shown in Figure 9 22 CAUTION Grasp the board at its edges to avoid damaging any...

Page 167: ...replace the system board proceed to the next chapter Replacing the System Board Installing the Graphics or Z Buffer Board Before you can install a graphics board or z buffer board you must remove the...

Page 168: ...les in the computer unit bulkhead before continuing with this step Align the interboard connectors and press them together as shown in Figure 9 24 If you cannot press the connectors together make sure...

Page 169: ...shorter board retaining screws and replace them with the two longer board retaining screws shipped with the z buffer board 5 If you are installing a graphics controller board install the hexagonal ret...

Page 170: ...onnect a graphics display monitor mouse and keyboard to your system refer to Chapter 2 Setting Up your Computer System To test a new or replacement board you should run a diagnostics acceptance test a...

Page 171: ...System Board Before you can remove the system board you need to prepare your worksite remove the computer unit s right side cover and attach the ESD wrist strap as described in Chapter 6 Expanding and...

Page 172: ...in Figure 10 2 that secure the system board bracket to the back of the computer unit Remove seven screws Computer unit back Remove filler plate Remove seven screws Figure 10 2 Releasing the System Bo...

Page 173: ...Board 7 Using the medium Phillips screwdriver remove the eight screws shown in Figure 10 4 that secure the system board to the computer unit Remove eight screws System board Figure 10 4 Unscrewing th...

Page 174: ...9 Remove the system board by pulling its bracket away from the computer unit and then lifting the board out of the computer unit as shown in Figure 10 6 CAUTION Grasp the system board by its edges to...

Page 175: ...this original PROM on the replacement system board 13 Insert the failed system board in an antistatic bag To install the replacement system board go to the next section Installing the System Board In...

Page 176: ...Figure 10 8 Once the pins are in line on one side repeat this procedure with the other side of the component Angled pin Spread pins PROM component pin positions Straight pins Straightening PROM compo...

Page 177: ...Single CPU Two CMMUs Indicates jumper installed Indicates jumper removed CPU complex connector Dual CPUs Four CMMUs CPU Configuration jumpers System board Single CPU Two CMMUs Dual CPUs Twelve CMMUs I...

Page 178: ...eries System Board NOTE Jumpers installed at asynchronous serial port pins P17 P18 and P19 enable Data Carrier Detect operation by pulling the signal up to 12 V The DG UX operating system requires ins...

Page 179: ...and then the other Since the pins are surrounded by components you will have to press on the components 8 Using the medium Phillips screwdriver secure the system board to the computer unit with the ei...

Page 180: ...screws as shown in Figure 10 14 10 Reinstall the rear panel filler plate as shown in Figure 10 14 Computer unit back Install filler plate 2 screws Secure system board bracket 5 screws Figure 10 14 Se...

Page 181: ...nd Chapter 9 Adding or Replacing a CPU Complex and System Board Options as appropriate 13 If you removed the PROM from the replacement system board you should insert this PROM on the failed system boa...

Page 182: ...Replacing the System Board 10 12 014 002091...

Page 183: ...the computer unit before removing any cover from the housing To remove a fan assembly follow the steps below You will need a medium 2 Phillips screwdriver 1 Unplug the fan assembly power cable from t...

Page 184: ...unit back Support here Figure 11 2 Releasing the Fan Assembly from the Back of the Computer Unit 3 Still supporting the bottom pull the fan assembly out and down to disengage it from the computer uni...

Page 185: ...bly directly under the computer unit as shown in Figure 11 4 2 Pull the fan assembly power cable up through the hole in the computer unit as shown in Figure 11 4 CAUTION The hole for the fan assembly...

Page 186: ...sembly in the Computer Unit 4 Use one hand to lift and support the back of the fan assembly in position and align the assembly and computer unit screw holes as shown in Figure 11 6 NOTE The securing b...

Page 187: ...nstall the side cover as described in the section Closing the Computer Unit in Chapter 6 After closing the computer unit power up any storage subsystems peripheral housing units and other peripherals...

Page 188: ...Replacing the Fan Assembly 11 6 014 002091...

Page 189: ...Before you can remove the power supply you need to power down any peripherals and the computer unit and remove the computer unit s top and left side covers as described in the Opening the Computer Uni...

Page 190: ...mputer unit top and left side covers removed Power supply Tape disk power cable Logic power cable Push clip in to release connector Push clips in to release connector Figure 12 2 Unplugging the Tape D...

Page 191: ...Lift the power supply up and then out of the computer unit as shown in Figure 12 4 Computer unit top and left side covers removed Power supply Figure 12 4 Removing the Power Supply Return the failed p...

Page 192: ...set the voltage selection switch to 115 V if it has 220 or 240 V ac power set the switch to 230 V Most sites in the United States and Canada have 120 V ac power If you are not sure about the correct...

Page 193: ...it 4 Secure the power supply to the computer unit by pushing in the two power supply latches shown in Figure 12 7 Computer unit top and left side covers removed Power supply Power supply latch Push in...

Page 194: ...it top and left side covers removed Power supply Tape disk power cable Logic power cable Figure 12 8 Connecting the Tape Disk Power and Logic Power Cables 6 Plug the fan assembly power and the ac powe...

Page 195: ...need to power down any peripherals and the computer unit and remove the computer unit s left side cover as described in the Opening the Computer Unit section of Chapter 6 WARNING Always unplug the po...

Page 196: ...pheral housing units and other peripherals Then start the computer unit according to the instructions in Chapter 3 and your operating system software documentation Next you should test your computer s...

Page 197: ...age devices an integrated Ethernet LAN controller and a VMEbus standard backplane AV530 workstations further include a color graphics monitor an optical mouse a keyboard and one or two graphics contro...

Page 198: ...Technical Specifications A 2 014 002091 Altitude Operating 0 8000 feet 0 2438 meters Storage 0 25000 feet 0 7620 meters Noise 0 40 decibels Quiet Office rating...

Page 199: ...duplex One mouse port AViiON 530 support One keyboard port AViiON 530 support CPU Complex Board Maximum of two 5 5 x 7 68 inches stacked on system board with two 96 pin DIN connectors One 33 megahert...

Page 200: ...raphics controller board Maximum of one 3 8 x 5 9 inches stacked on graphics controller with one 96 pin DIN connector Selectable 16 or 24 plane z buffer support 256 Kbyte x 4 DRAMs Fixed internal 24 b...

Page 201: ...dapter Connected externally via RG62 coaxial cable Eight full duplex asynchronous RS 232 C lines per controller Maximum transfer rate 19 2 Kb s per line One Centronics parallel printer port Signals su...

Page 202: ...alone tower 10 half height slots supporting maximum of seven 5 25 inch SCSI devices five full height seven half height or combination totaling seven or less Model 10565 Peripheral Housing Unit PHU 12...

Page 203: ...data transfer rate 15 ms average seek Power Subsystem Specifications This section contains specifications for the power subsystem which includes a modular off line switching converter and cooling fan...

Page 204: ...t 3 0 0 0 Z Buffer 0 5 0 0 Keyboard 0 5 0 0 Mouse 0 0 015 0 02 Internal Mass Storage Drives 150 Mbyte QIC tape 6577 1 5 1 5 0 525 Mbyte QIC tape 6677 1 5 1 5 0 2 Gbyte tape 6590 2 4 0 65 0 Digital aud...

Page 205: ...ggle the default horizontal scan rate screen refresh rate and pixel rates to operate with a 60 hertz monitor by using the Ctrl V function described in Appendix C Solving Powerup Problems and Exiting t...

Page 206: ...ilohertz Period 14 257 milliseconds 1071 hertz Front Porch 0 013 milliseconds 1 hertz Sync Width 0 053 milliseconds 4 hertz Back Porch 0 559 milliseconds 42 hertz Blanking Time 0 626 milliseconds 47 h...

Page 207: ...dback Protocol Compatible with EIA RS 232 C interface 1200 baud asynchronous serial Power Uses power from RS 232 C interface Maximum current 15 milliamps Maximum voltage 13 2 volts ac Size Mouse 3 75...

Page 208: ...ct 2 Receive Data 3 Transmit Data 4 Data Terminal Ready 5 Signal Ground 6 Data Set Ready ports B and C only 7 Request to Send 8 Clear to Send 9 Ring Indicator ports B and C only Proper terminal operat...

Page 209: ...connect to the RS 232 C ports through one of two 25 pin female connectors located on the back of the computer unit Figure A 3 lists the signals and shows the pin numbers for these synchronous communic...

Page 210: ...25 to 36 pin conversion accomplished by the parallel printer cable Pin Signal 1 Strobe 2 Data 0 3 Data 1 4 Data 2 5 Data 3 6 Data 4 7 Data 5 8 Data 6 9 Data 7 10 Acknowledge 11 Busy 12 Paper End out o...

Page 211: ...in numbers for the single ended SCSI connector Pin Signal Pin Signal 1 25 Unused 26 Data Bus 0 27 Data Bus 1 28 Data Bus 2 29 Data Bus 3 30 Data Bus 4 31 Data Bus 5 32 Data Bus 6 33 Data Bus 7 34 Data...

Page 212: ...BROAD36 Ethernet over CATV 10BASET proposed Ethernet over twisted pair or any other 10 MHz AUI compatible MAU or MAU like device that does not require the Control Out signal specified in the AUI defin...

Page 213: ...hrough an 8 pin DIN connector located on the left side of the computer unit Figure A 8 lists the signals and shows the pin numbers for the keyboard and connector Pin Signal 1 Clock 2 Data 3 Unused 4 G...

Page 214: ...he computer unit Figure A 9 lists the signals and shows the pin numbers for the connector Pin Signal 1 Request to Send 2 Data Terminal Ready 3 Unused 4 Unused 5 Unused 6 Ground 7 Transmit Data 8 Recei...

Page 215: ...mming System Control and I O Registers for a description of additional SCM functions not described in this manual Getting to the SCM You can tell you are in the SCM when you see its command interprete...

Page 216: ...fer to your operating system documentation for information about properly shutting down before halting the system CAUTION Always try to shut down your operating system properly before attempting to ha...

Page 217: ...o AViiON 4600 Systems and AViiON 530 Workstations Programming System Control and I O Registers Using SCM Commands This section describes SCM command interpreter conventions explains how to execute com...

Page 218: ...Enter Ctrl I wait until you hear one beep then enter 1 if you have a 70 Hz monitor or enter 2 for a 60 Hz monitor Ctrl Q Resumes SCM output display that was suspended with the Ctrl S sequence Ctrl S...

Page 219: ...ands and Command Functions period Displays processor status Debugging ATTACH Specifies attached processor Program control system operation 1 BOOT Starts system from bootstrap device System operation C...

Page 220: ...the number of the attached job processor By default Jp 0 is the attached processor after powerup The system returns the currently attached processor if you use this command without an argument Argumen...

Page 221: ...system s Internet address When you omit the second argument in a LAN boot the SCM probes the LAN for any server that recognizes your computer s Ethernet address and then boots the default boot file W...

Page 222: ...able B 3 lists the mnemonic names for bootable devices and defines the optional parameters for each device Table B 3 Mnemonics and Parameters for Bootable Devices ncsc NCR SCSI adapter I O address N A...

Page 223: ...pecify this controller Mnemonic I O Address Enter one of these values The simplest device specification combines the device mnmonic with the controller parameter specification For example specifies th...

Page 224: ...cifying a Logical Unit Third Parameter The third parameter specifies a drive s logical unit number LUN You rarely use the third parameter lun it supplies additional information when the second paramet...

Page 225: ...th argument For example to boot file 1 the second file on a cartridge tape in the drive at SCSI ID 4 the full boot path is Booting over a LAN When booting as an operating system client to a DG UX serv...

Page 226: ...n can be named by the current defaults You may want to change device configurations to accommodate your operating system or to configure additional devices not supplied by Data General Without the def...

Page 227: ...ice Alternate Ethernet address For example the default specification for the first VME Ethernet controller jumpered according to its factory configuration is To specify a different Hawk Interphase Eth...

Page 228: ...on the logical disk from the default system disk SCM b sd ncsc 0 usr stand diags 8 Boot any executable file called in the root directory on the second SCSI disk SCSI ID 1 SCM b sd ncsc 1 root bootfile...

Page 229: ...asses completely to the continued program Arguments trace count The hexadecimal number of instructions you want the program to execute The system displays the address data and mnemonic in that order a...

Page 230: ...SCM Configuration Menus for further information about SCM menu items Arguments None Related Commands Boots a device or displays the Change Boot Parameters menu Related Messages None Examples Display t...

Page 231: ...cntrl unit part Boot a device C Continue D Display all registers E address Examine modify memory E register Examine modify R CR FCR F View Change System Configuration H Display help message I data beg...

Page 232: ...ou have multiple computers The greater than symbol appears after the text prefix if you change the prompt text to a null text string your prompt is simply the symbol Arguments new prompt Text string o...

Page 233: ...state Unlike a cold reset power applied to the system a warm reset initiated by software the command or a Reset switch does not initialize memory or run powerup diagnostics Arguments None Related Com...

Page 234: ...argument Arguments address Memory location at which the processor starts executing trace count The system displays the address data and mnemonic in that order after executing the hexadecimal number of...

Page 235: ...d at locations specified in the s record header and then verifies checksums Information appended to the last s record notifies the SCM when the entire file has been sent For this command to function y...

Page 236: ...Using the System Control Monitor B 22 014 002091...

Page 237: ...lem after consulting your operating system s manuals contact Data General as described in the Preface During a normal powerup your system displays the message Passed before it boots the DG UX operatin...

Page 238: ...a description of how to use the AViiON System Diagnostics hardware acceptance test The last section of this appendix Exiting the Installer System describes how to leave the DG UX installer system bef...

Page 239: ...ntact Data General For This Condition Try This Blank or Distorted Display Has the graphics monitor screen Rotate the Brightness dial clockwise been blank for 2 minutes Power down then 1 Test the ac po...

Page 240: ...the screen been blank for Adjust brightness control to maximum 2 minutes Turn all power off then 1 Test the ac power source with a desk lamp or other electrical device 2 Tighten power cord connection...

Page 241: ...nect your AViiON 530 series computer components together are undamaged and their connectors are secured tightly so that they make a good connection 8 Turn power on to all connected peripherals 9 Turn...

Page 242: ...they make a good connection 11 Turn power on to all connected peripherals 12 Turn power on to the computer unit again 13 If the display remains blank your system console terminal or system console ter...

Page 243: ...able 1 Make sure that the cable connection from the RS232A port to the terminal is secure 2 If the keyboard has an On Line key or indicator toggle that key If you know that the keyboard is on line and...

Page 244: ...omputer unit fan spinning inside the chassis If the LED and speaker do not signal or if the fan seems to be slow or not spinning at all contact Data General as described in the Preface the problem is...

Page 245: ...computer system signals an error during powerup Refer to this section if powerup diagnostic tests halt and display an error message or if the system console hangs during powerup testing If your screen...

Page 246: ...in the Preface Exiting the Installer System If you intend to run a hardware acceptance test or change configuration parameters before installing DG UX you must first exit the DG UX installer system F...

Page 247: ...manual Using the SCM Configuration Menus After changing parameters you will need to reset your system as described in Resetting the Computer System at the end of Chapter 3 After resetting your system...

Page 248: ...Solving Power Up Problems C 12 014 002091...

Page 249: ...AViiON System Diagnostics graphics tests C 6 hardware acceptance test C 2 shipped with computer 1 15 B Backup devices 1 8 Baud rate default setting 2 11 C 9 modem port 5 16 mouse 5 17 system console 2...

Page 250: ...console mode 5 11 graphics monitor frequency B 4 modem port parameters 5 15 5 17 mouse parameters 5 17 screen saver timeout 5 14 5 16 system console character size 5 10 system console parameters 5 8...

Page 251: ...hronous ports 2 11 keyboard 2 6 parallel printer 2 13 RS 232 C 2 10 Port A 2 2 SCSI bus 2 14 4 2 4 13 and pin alignment 4 13 serial 2 10 synchronous devices 2 12 system console 2 2 Connectors keyboard...

Page 252: ...em booting 3 5 3 10 exiting install sequence of C 10 prompt x installer system 3 6 Dial monitor brightness 1 6 C 5 contrast 1 6 C 5 Disconnecting ac power cord 2 16 2 17 graphics monitor 2 3 keyboard...

Page 253: ...ing or disabling 5 12 system console 2 3 FORMAT command SCM B 16 Fuse tape disk replacing 12 7 12 8 G German console language 5 13 Graphics board adding or replacing 9 15 9 21 installing 9 18 9 21 Gra...

Page 254: ...15 specifications A 9 Keyboard features command interpreter B 4 language 5 12 5 14 L LAN local area network Ethernet address displayed at powerup 3 4 cables 1 14 connecting 2 8 connector location 1 5...

Page 255: ...andard devices defined B 12 Norwegian keyboard BOOT command 5 7 B 14 language setting 5 14 O Opening the computer unit 6 10 6 13 Option boards memory A 2 removing 9 16 9 18 sized at powerup 3 4 Option...

Page 256: ...6 removing from system board 10 5 Prompt DG UX x SCM x PROMPT command SCM B 18 Prompt SCM changing B 18 defined B 1 entering menus from 5 1 multiprocessor B 1 R Rear panel 1 5 Related manuals ix Remo...

Page 257: ...5 1 Screen blank C 5 error display C 9 powerup messages 3 4 Screen distortion clearing 1 6 SCSI adapter board adding and replacing 7 14 cable connections 7 14 7 15 7 16 7 17 installing 7 16 7 18 remo...

Page 258: ...s removing 8 4 8 7 optional components 1 4 PROM component on installing 10 6 removing 10 5 removing 10 1 10 11 removing graphics board from 9 16 9 18 removing z buffer board from 9 16 9 18 replacing 1...

Page 259: ...Unpacking the computer 1 9 V Video parameters A 8 View or Change System Configuration Menu displaying 5 1 Viewing system configuration devices 5 18 memory 5 18 modem port parameters 5 15 5 17 mouse p...

Page 260: ...Index 12 014 002091...

Page 261: ...ty of units in your order and refer to the following chart Total Quantity Shipping Handling Charge 1 4 Items 5 00 5 10 Items 8 00 11 40 Items 10 00 41 200 Items 30 00 Over 200 Items 100 00 If overnigh...

Page 262: ......

Page 263: ...SHIP TO No P O Boxes Complete Only If Different Address COMPANY NAME ATTN ADDRESS NO PO BOXES CITY STATE ZIP TIPS ORDER FORM Mail To Data General Corporation Attn Educational Services TIPS G155 4400...

Page 264: ...ED INCLUDING BUT NOT LIMITED TO WARRANTIES OF MERCHANTABILITY AND FITNESS FOR PARTICULAR PURPOSE ON ANY OF THE PUBLICATIONS CLI MACROS OR MATERIALS SUPPLIED HEREUNDER 6 LIMITATION OF LIABILITY A CUSTO...

Page 265: ...Cut here and insert in binder spine pocket Setting Up Starting Expanding and Maintaining AViiON 530 and 4600 Series Computers 014 002091 01...

Page 266: ...Appendix Title 093 xxxxxx 2 Licensed Material Property of Data General Corporation...

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