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Caution -

A DSIMM is made of delicate electronic components that are extremely

sensitive to static electricity. Ordinary amounts of static from your clothes or work
environment can destroy a DSIMM. Handle a DSIMM only by the edges. Do not
touch the components on the DSIMM or any metal parts. Wear a grounding strap
before unpacking and during handling of a DSIMM. Do not disconnect the power cord
from the system unit’s power receptacle. The power cord should be left plugged in to a
grounded power outlet. This connection provides the ground path necessary so that
you can safely remove and install DSIMMs and other components. Be sure that the
system unit power is turned off by observing that the green light-emitting diode
(LED) at the front of the chassis is not lit.

1. Remove the system unit cover.

Refer to “Removing the System Unit Cover” on page 32 in Chapter 4.

2. Attach the wrist strap.

Refer to “Attaching the Wrist Strap” on page 34 in Chapter 4.

3. Locate the DSIMM slots on the main logic board (MLB). See Figure 8–1.

Note the slot location of the DSIMM to be removed.

Figure 8–1

Location of DSIMMs on the MLB

90

SPARCstation 10 Service Manual

♦

Revision A, July 1993

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Страница 1: ...SPARCstation 10 Service Manual A Sun Microsystems Inc Business 901 San Antonio Road Palo Alto CA 94303 4900 Part No 800 6358 11 Revision A July 1993 ...

Страница 2: ...USA 650 960 1300 fax 650 969 9131 ...

Страница 3: ...SPARCstation 10 Service Manual Part No 800 6358 11 Revision A July 1993 ...

Страница 4: ...PARTICULAR PURPOSE OR NON INFRINGEMENT Copyright 1997 Sun Microsystems Inc 901 San Antonio Road Palo Alto Californie 94303 4900 U S A Tous droits réservés Ce produit ou document est protégé par un copyright et distribué avec des licences qui en restreignent l utilisation la copie et la décompilation Aucune partie de ce produit ou de sa documentation associée ne peut être reproduite sous aucune for...

Страница 5: ...ostics Overview 9 How It Fits Together 11 When to Use Diagnostics 12 Boot PROM Diagnostics 13 Power On Self Test POST 13 Power On Self Test Detailed Description 14 On Board Diagnostics 14 SunDiag System Exerciser 20 SunDiagnostic Executive 21 Forth Toolkit 21 3 Troubleshooting 23 Power On Does Not Succeed 23 Symptom 23 Contents iv ...

Страница 6: ...at is Hung 30 Tools Needed 31 Antistatic Surface 32 Disconnecting External SCSI Peripherals 32 Removing the System Unit Cover 32 Attaching the Wrist Strap 34 Replacing the Cover 36 5 Main Logic Board 39 Tools Needed 39 Preparing Your System 39 Removing an SBus Card 40 Removing an MBus Module 44 Disconnecting the Internal Cables 46 Removing the MLB 47 Preparing the MLB 49 v SPARCstation 10 Service ...

Страница 7: ...e NVRAM Chip 60 Installing MBus Modules 61 Installing an SBus Card 63 Replacing DSIMMs 66 DSIMM Insertion Tool 68 6 Open Boot PROM 73 Tools Needed 73 Removing the Open Boot PROM 73 Installing the Open Boot PROM 78 7 Non Volatile RAM NVRAM 81 Tools Needed 81 Removing the NVRAM 81 Installing the NVRAM 85 8 DSIMMs 89 Tools Needed 89 Removing a DSIMM 89 Installing the DSIMM 91 9 MBus Modules 97 Tools ...

Страница 8: ... Removing a Disk Drive 119 Installing a Hard Disk Drive 122 Drive Locations 123 Supported Hard Disk Drives 123 Checking and Setting SCSI Jumpers 124 424 Mbyte Jumper Settings 124 Installing a 424 Mbyte Drive 125 Installing a 1 05 Gbyte Drive 126 13 Diskette Drive 135 Tools Needed 135 Removing the Diskette Drive 135 Preparing the Diskette Drive 137 Installing the Diskette Drive 138 14 DC Power Harn...

Страница 9: ... Connecting a Desktop Storage Pack 171 Connecting an External Storage Module 171 Connecting a Video Monitor 172 Connecting a Mouse 172 Connecting a Keyboard 172 Turn On the Power 172 A System Specifications 175 Power Input Requirements 175 Environmental Requirements 175 System Placement Requirement 177 Physical Dimensions 177 Packaging Dimensions 178 Regulatory Compliance 178 B Replacement Parts L...

Страница 10: ...escriptions 189 Keyboard Mouse and Serial Ports A B 191 Keyboard Mouse 191 Serial Ports A B 191 Keyboard Mouse and Serial Ports A B Signal Descriptions 192 Twisted Pair Ethernet 194 Twisted Pair Ethernet Signal Description 194 SCSI 195 SCSI Signal Description 196 Glossary 199 Index 205 ix SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 11: ...of 17 chapters and 4 appendixes in addition to a glossary and an index 4 Chapter 1 System Overview describes the major components of the SPARCstation 10 computer system 4 Chapter 2 Diagnostics Overview describes the different types of diagnostic firmware and software and discusses various tests supported by the SPARCstation 10 4 Chapter 3 Troubleshooting gives pointers for diagnosing a problem or ...

Страница 12: ...d install the SPARCstation 10 DC power harness 4 Chapter 15 Internal Disk Cable explains how to remove and install the internal disk cable 4 Chapter 16 LED explains how to remove and install the light emitting diode LED for the SPARCstation 10 system 4 Chapter 17 Powering On the System explains precautions steps to perform before and after replacing a part and connecting peripherals to the system ...

Страница 13: ...rve all safety precautions and ensure compliance with skill level requirements certification and all applicable local and national laws Procedures contained in this document must be performed by trained maintenance providers Only people who have been trained by the Sun Microsystems training facilities or by Sun Microsystems affiliates and have been certified as required by local and national laws ...

Страница 14: ...be emphasized Read Chapter 6 in User s Guide These are called class options You must be root to do this Related Books The following books provide additional information and are referenced in this manual 4 System administration manual for the computer system 4 Operating system documentation for the operating system release the system is running 4 OpenBoot 2 0 Command Reference provides information ...

Страница 15: ... by step information on how to install DSIMMs in the SPARCstation 10 system 4 424 Mbyte Disk Drive Installation Guide provides information on how to install 424MB drives in the SPARCstation 10 system 4 1 05 Gbyte Disk Drive Installation Guide provides information on how to install 1 05GB drives in the SPARCstation 10 system 4 Desktop Storage Pack Installation Guide explains how to install and dais...

Страница 16: ...xv SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 17: ...icing and maintaining hardware equipment The system major components usually consist of the following 4 System unit 4 Video monitor or a terminal 4 Keyboard 4 Mouse 4 Speaker box 4 External storage modules optional Figure 1 1 shows how to connect the system major components with an external drive 1 ...

Страница 18: ...rds up to 4 cards 4 Internal 3 1 2 inch 88 9 mm hard disk drive units up to 2 units 4 Internal 3 1 2 inch 88 9 mm diskette drive unit 4 140W power supply with 3 fans The following figures and tables illustrate the system unit 4 Figure 1 2 shows the front view of a SPARCstation 10 system 4 Figure 1 3 shows the rear view of the system 4 Figure 1 4 presents the top view of the system with the cover r...

Страница 19: ... the SPARCstation 10 assembly 4 Table 1 1 lists the acronyms used for certain parts and their full expressions 4 Table 1 2 describes video monitors Figure 1 2 Front View of the System Figure 1 3 Rear View of the System Figure 1 4 Top View of the SPARCstation 10 System without Cover System Overview 3 ...

Страница 20: ...oard TABLE 1 1 List of Acronyms Acronyms Full Expression NVRAM Non volatile Random Access Memory EPROM Erasable Programmable Read Only Memory PTC Temperature DSIMM Single 4 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 21: ...Figure 1 6 Exploded View of the SPARCstation 10 System MLB System Overview 5 ...

Страница 22: ... video output from the system unit and accelerates the generation of graphic images 4 Color Frame Buffer Card This card occupies one SBus slot This card controls the video output from the system unit to a color monitor 4 GS Graphics Accelerator Card This option consists of two cards that are plugged into each other on their component sides These triple width SBus cards are installed in the top SBu...

Страница 23: ...and one of several types of video monitors Table 1 2 lists the monitors supported TABLE 1 2 Video Monitor Types Monitor Type Voltage 16 inch color monitor 407 mm 115V 16 inch color monitor 407 mm 240V 19 inch standard grayscale monitor 483 mm 90 240V 19 inch high resolution monochrome monitor 483 mm 115V 19 inch high resolution monochrome monitor 483 mm 240V 17 inch grayscale 432 mm 90 240V 19 inc...

Страница 24: ...ck 207 Mbytes hard disk drive 4 Desktop Disk Pack 424 Mbytes hard disk drive 4 Desktop Disk Pack 535 Mbytes hard disk drive 4 Desktop SunCD Pack compact disc drive 4 Desktop SunCD compact disc drive 4 Desktop Storage Pack 1 05 Gbytes hard disk drive 4 Desktop Storage Module 1 3 Gbytes hard disk drive 4 Desktop Storage Module 2 3 Gbytes tape drive 4 Desktop Storage Module 5 0 Gbytes tape drive 4 SC...

Страница 25: ...e to you and how they are related The main categories of diagnostics are 4 Boot PROM diagnostics 4 Power On Self Test POST 4 On Board Diagnostics 4 SunDiag System Exerciser 4 SunDiagnostic Executive 4 Forth Toolkit Figure 2 1 is a flowchart that outlines the roles played by various diagnostics during the default boot mode 9 ...

Страница 26: ...Figure 2 1 Default Boot Mode Flowchart 10 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 27: ...nt to enter the Forth Toolkit indicated by the ok prompt press the Stop L1 a keys simultaneously When the autoboot switch parameter is set to false not the default the ok prompt appears Table 2 1 gives the results of various combinations of the autoboot an diagnostic switch settings The ok prompt is the default prompt To change to the Monitor prompt see the Open Boot 2 0 Command Reference If the a...

Страница 28: ...stem Exerciser Runs under SunOS It displays real time use of the system resources and peripherals The SunDiag System Exerciser tells you if your system is functioning correctly or not If SunDiag fails run the Power On Self Test If all power on self tests pass then run the SunDiagnostic Executive to identify the problem See the SunDiag User s Guide for more information SunDiagnostic Executive Runs ...

Страница 29: ...The POST code which resides in the boot PROM is executed by the CPU IU when the Pok signal is received from the power supply The POST consists of a sequence of tests designed to test the major hardware components of the MLB in the short time before SunOS is booted POST does not perform extensive testing on any component of the MLB Only major failures can be detected by POST If a failure occurs in ...

Страница 30: ...odule in slot 0 fails Compose is ON DSIMM in slot J0201 fails If all POST tests pass run the SunDiagnostic Executive with the cache disabled The SunDiagnostic Executive is an independent operating system It runs exhaustive subsystem tests independent of SunOS See the latest version of SunDiagnostic Executive User s Guide for the SPARCstations On Board Diagnostics You have access to a number of tes...

Страница 31: ...ollowing example summarizes the steps you need to take to halt the system enter the Forth Toolkit and list the diagnostic tests hostname usr etc halt ok help diag Category Diag diagnostic routines test device specifier run selftest method for specified device Examples test iommu sbus ledma f 400010 le test net test net test net device specifier is an alias test scsi test scsi device specifier is a...

Страница 32: ...oppy Tests the floppy drive ability to respond to commands Requires a formatted diskette to be inserted into the drive test scsi Tests the SCSI interface logic on the MLB The diag switch NVRAM parameter must be set true for the test to run test net aui Performs an internal and external loopback test on the AUI thick Ethernet interface A cable must be connected to the system AUI Ethernet port and t...

Страница 33: ...serted or the test will fail test tape Tests the SCSI tape drive by executing the drive selftest program test tape0 test tape1 tape and tape0 SCSI target 4 tape 1 SCSI target 5 test ttya Outputs an alphanumeric test pattern on the system serial test ttyb ports ttya serial port A ttyb serial port B You must attach a terminal to the tested port to observe the output test keyboard Executes the keyboa...

Страница 34: ...External loopback test Auto selecting Ethernet cable I F Trying AUI Received packet on AUI Select cable AUI succeeded Looking for Ethernet packets is a good packet X is a bad packet Type any key to stop The SPARCstation 10 system has two types of on board Ethernet interfaces 10BaseT also called twisted pair Ethernet or TPE and 10Base5 also called thick Ethernet or AUI Only one on board interface m...

Страница 35: ...ce by pressing any key watch net all then goes on to test the next Ethernet interface it finds in the system For example ok watch net all iommu f e0000000 sbus f e0001000 lebuffer 1 40000 le 1 60000 Internal loopback test succeeded External loopback test succeeded Looking for Ethernet packets is a good packet X is a bad packet Type any key to stop keyboard key pressed h iommu f e0000000 sbus f e00...

Страница 36: ... main memory will be tested if the system diag switch parameter is true If the diag switch parameter is false this test uses the selftest megs parameter in NVRAM to determine how much memory to test The default for the selftest megs parameter is 1 so only 1 megabyte of memory is tested To change the amount of memory tested using the selftest megs parameter type this command ok setenv selftest megs...

Страница 37: ...ailed If the error messages are not descriptive enough you may need to run POST or the Sun Diagnostic Executive SunDiagnostic Executive The SunDiagnostic Executive is an independent operating system It runs exhaustive subsystem tests independent of SunOS Run the SunDiagnostic Executive if all POST tests pass in order to determine which field replaceable unit FRU needs to be replaced For informatio...

Страница 38: ... 1 3 enter usr etc halt The system syncs and halts the file systems and then displays the ok prompt 3 The system automatically enters the Forth Toolkit The ok prompt shows that you are in the Forth Toolkit For extensive information on tests you can run from the Forth Toolkit see Open Boot 2 0 Command Reference 22 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 39: ... product knowledge is required to troubleshoot and repair a SPARCstation 10 system Power On Does Not Succeed Symptom No video output on the system monitor Actions 1 Make sure that the power cord is connected to the monitor and to the wall outlet 2 Use a Volt Ohm Meter VOM to verify that the wall outlet is supplying AC power to the monitor 3 Make sure that the video cable connection between the mon...

Страница 40: ... may be defective Refer to the procedure Power Supply Test on page 24 later in this chapter If you hear a tone and see lights on the keyboard but the system still fails to initialize refer to the procedure MLB Test on page 26 later in this chapter Power Supply Test Before you start make sure that the power supply is turned on You need to remove the system unit cover to be able to test the power su...

Страница 41: ...ic Ground 3 5 1V 12 Logic Ground 4 5 1V 13 Logic Ground 5 5 1V 14 Logic Ground 6 5 1V 15 Logic Ground 7 5 1V 16 Logic Ground 8 Power On 17 Power OK reset 9 Power Off 18 No Connection Replace the power supply assembly if any of the voltages are not present Refer to Chapter 11 for instructions to replace the power supply assembly Troubleshooting 25 ...

Страница 42: ...DSIMM in slot J0201 fails If a failure code appears replace the defective part indicated by the LEDs The POST failed if the Caps Lock key fails to flash on and off after you have pressed and held the Stop L1 d keys The most probable cause of this type of failure is the MBus module Other optional parts in the system could cause POST to fail this way Remove any optional SBus cards and memory and run...

Страница 43: ...rive responds correctly to this command a message appears similar to the following ok probe scsi Target 1 Unit 0 Disk SEAGATE ST1480 SUN0424 Copyright c 1991 Target 3 Unit 0 Disk SEAGATE ST1480 SUN0424 Copyright c 1991 If the disk drive responds and a message is displayed the system SCSI controller has successfully probed the devices This is an indication that the MLB is working correctly If one d...

Страница 44: ...f ffff J0304 bank 3 0c00 0000 0fff ffff J0202 bank 4 1000 0000 13ff ffff J0301 bank 5 1400 0000 17ff ffff J0303 bank 6 1800 0000 1bff ffff J0305 bank 7 1c00 0000 1fff ffff Note The physical order of the DSIMM slots on the MLB is not the same as the order of the banks listed in the table The physical order of the slots is based on an alternating bank pattern bank 0 bank 4 bank 1 bank 5 bank 2 bank ...

Страница 45: ...e System Before you remove a replaceable part you must halt the system according to the following procedure Caution When the operating system or any other stand alone program has already booted do not use the Stop L1 a keys to halt the system Using the Stop L1 a keys to abort program execution can cause damage to data files 1 Save any files you are presently editing 2 Quit from any applications th...

Страница 46: ...rder 4 External drive unit s if you have any 4 SPARCstation 10 system unit 4 Monitor Caution Make sure your system is shut off The green LED at the front of the system unit should not be lit Do not disconnect the power cord from the system unit power outlet or the wall socket This connection provides the ground path necessary to safely remove and install the printed circuit boards and components H...

Страница 47: ...op L1 a Type help for more information ok sync System panic and boot messages tutorial login For additional information on the halt procedure see Chapter 1 of the Sun System Network Manager s Guide and also the System Network Administration manual Caution Make sure power to your system is shut off The green LED at the front of the system unit should not be lit Do not disconnect the power cord from...

Страница 48: ...Inner surface of the system unit cover 4 Sun ESD mat with Sun logo Available for purchase through your Sun sales representative 4 Disposable ESD mat Available for purchase through your Sun sales representative Disconnecting External SCSI Peripherals If your system unit has external SCSI peripherals connected to it disconnect the SCSI connector from the back of the system unit 1 Press the finger cl...

Страница 49: ...rew holding the cover to the back panel The screw remains attached to the back panel after it is fully loosened from the cover See Figure 4 1 Figure 4 1 Rear Panel Captive Screw Location 3 Press the plastic retainer clip with a Phillips screwdriver as you loosen the cover from the back panel with your other hand See Figure 4 2 Figure 4 2 Plastic Retainer Clip Location 4 Face the back panel Grasp t...

Страница 50: ...een your body and the system unit chassis Electrical current and voltage do not pass through the wrist strap Attach one end of the wrist strap to your wrist and the other end to the metal case of the power supply A wrist strap is shipped with parts that require grounding Caution Boards and modules can be damaged by harmful electrical charges if you do not wear a wrist strap 1 Unwrap the first two ...

Страница 51: ...st 2 Peel the liner from the copper foil at the opposite end of the wrist strap 3 Affix the adhesive copper end of the wrist strap to the top of the metal casing of the power supply See Figure 4 5 Figure 4 5 Power Supply Location Preparing the System 35 ...

Страница 52: ... tabs into the tab slots on the front of the system unit Carefully lower the cover onto the system unit Figure 4 6 Lowering the Cover 3 Gently press down on the left and right sides of the cover Guide the cover so that the retainer clip snaps the cover to the back panel See Figure 4 7 36 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 53: ...ing the Cover 4 Tighten the captive screw at the top right side of the rear panel to the cover using a Phillips screwdriver Do not over tighten the screw Figure 4 8 Tightening the Captive Screw Preparing the System 37 ...

Страница 54: ...38 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 55: ...emove and install the MLB its major cards and components 4 Phillips screwdriver size 1 4 Phillips screwdriver size 2 4 Card extractor 4 Needle nose pliers 4 Wrist strap 4 Antistatic surface Preparing Your System 1 Shut down and power off your system 2 Remove all cables except the power cord from the back of the system Make sure that the power cord is still connected from the system unit to the wal...

Страница 56: ...e wrist strap to the metal casing of the power supply Handle boards only by the edges Do not touch the components or any metal parts Do not disconnect the power cord from the system unit power outlet or from the wall socket This connection provides the ground path necessary to safely remove and install the printed circuit boards and components Removing an SBus Card 1 Note the SBus card slot Start ...

Страница 57: ...th SBus cards have two sets of screws and washers Double width SBus cards have four sets of screws and washers Triple width SBus cards have six sets of screws and washers Save the screws and washers for future use Figure 5 2 Rear Panel Screws and Washers 3 Push back all card retainers holding an SBus card See Figure 5 3 Figure 5 3 Card Retainers Main Logic Board 41 ...

Страница 58: ... connectors and pull up on the card Go to Step 1 on page 39 Figure 5 4 SBus Card Extractor 5 Hold both ends of the card extractor and pull upwards slowly until the connector is out of the slot If your system was not shipped with an SBus card extractor place your index fingers or thumbs on the corners of the SBus card near the SBus connector Pull up on the card Figure 5 5 shows a single width SBus ...

Страница 59: ...ove the card extractor s from the SBus card a Bend one leg of the extractor slightly to the outside until the hook clears the hole in the SBus card b Remove the other side of the extractor which should come out easily without bending it Save the card extractor s for future use Main Logic Board 43 ...

Страница 60: ...remove any cards from the bottom slot s Removing an MBus Module The Main Logic Board supports one or two MBus modules Caution Hot surfaces are present Use care when opening the system chassis or handling components 1 Push back the module retainers for the MBus module If the system has two MBus modules slot 1 on top of slot 0 remove the top module first See Figure 5 7 44 SPARCstation 10 Service Man...

Страница 61: ...extractor and pull upwards slowly until the MBus module is out of the slot Note If your system was not shipped with a card extractor place your thumb and one finger on the corners of the MBus module near the module connector Pull up on both corners of the module until the connector is out of the slot Main Logic Board 45 ...

Страница 62: ...antistatic surface 6 If your system has another MBus module remove the module from slot 0 Repeat steps 1 through 6 Disconnecting the Internal Cables 1 Disconnect the internal drive connector J0101 from the MLB J0601 See Figure 5 9 2 Disconnect the DC power connector from the MLB J1501 See Figure 5 9 46 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 63: ... modules should be removed at this point The internal disk connector J0101 and DC power connector P1 should be disconnected 1 Remove the MLB a Remove the lock block Loosen the screw located at the center of the lock block Save the lock block and screw for use later See Figure 5 10 Main Logic Board 47 ...

Страница 64: ...ive retainer screws securing the MLB to the rear of the chassis Figure 5 11 Figure 5 11 MLB Retainer Screws at the Rear of the Chassis c Slide the board toward the front of the chassis See Figure 5 12 48 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 65: ...e MLB Unpack the replacement MLB Follow the instructions shipped with the board Removing Filler Panels 1 Remove each filler panel from the replacement MLB so the rear panels of the defective and the new MLB look the same a Remove the screws and washers from each filler panel to be removed Save the screws and washers for future use See Figure 5 13 Main Logic Board 49 ...

Страница 66: ... filler panel Use both hands See Figure 5 14 Figure 5 14 Removing the Filler Panel c Pull the filler panel away from the rear panel Use both hands The panel releases toward the front of the system d Put the filler panel aside 2 Repeat Step 1 a through Step 1 d for each filler panel that must be removed 50 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 67: ... in the Federal Republic of Germany and Australia or as RS 423 mode for other users If you use your SPARCstation 10 system for connection to a public X 25 network in Europe you must configure the serial ports on your system to operate in the RS232 mode Make sure the serial port jumpers are set correctly Figure 5 16 shows the correct setting for the serial port jumpers If the jumpers need to be cha...

Страница 68: ...es give the proper jumper settings See Table 5 1 if you know your system model number or see Table 5 2 to find the jumper settings based on your MBus module numbers TABLE 5 1 System Clock Speed Jumper Settings Based on SPARCstation 10 Model Number SPARCstation 10 Model Number Jumper Setting System Clock Speed MBus Clock Speed Model 20 B 66 MHz 33 MHz Model 30 B 72MHz 36 MHz Model 40 B 80 MHz 40 MH...

Страница 69: ... MHz 33 MHz SM30 501 2215 501 2239 B 72 MHz 36 MHz SM40 501 2219 501 2358 B 80 MHz 40 MHz SM41 501 2258 501 2270 501 2359 A 80 MHz 40 MHz SM51 501 2352 501 2360 A 80 MHz 40 MHz 1 SM refers to SPARC Module Three Clock Speed Jumpers The first type of board has three jumpers J1401 J1403 J1404 All three jumpers must be set for either mode A operation step one or mode B operation step two based on the ...

Страница 70: ...oard 2 Set the mode B clock speed jumpers Use a pair of needle nose pliers to move the jumpers to the correct positions See Figure 5 18 Figure 5 18 Mode B Clock Speed Jumper Speed Setting 3 Jumper Board 54 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 71: ...ble 5 1 or MBus modules installed Table 5 2 1 Set the mode A clock speed jumper Use a pair of needle nose pliers to move the jumper to the correct position See Figure 5 19 Figure 5 19 Mode A Clock Speed Jumper Speed Setting 1 Jumper Board 2 Set the mode B clock speed jumper Use a pair of needle nose pliers to move the jumper to the correct position See Figure 5 20 Main Logic Board 55 ...

Страница 72: ...apter 2 Orient the board over the chassis so the connectors are facing the rear of the chassis 3 Tilt the connector side of the board and lower it under the rear of the chassis 4 Lower the board into the chassis and slide it to the rear of the chassis The eight locating posts in the chassis should fit the eight slots on the MLB See Figure 5 21 56 SPARCstation 10 Service Manual Revision A July 1993...

Страница 73: ...Figure 5 21 Lowering the System Board into the Chassis 5 Connect the DC power to the MLB J1501 See Figure 5 22 6 Connect the internal drive connector to the MLB J0601 See Figure 5 22 Main Logic Board 57 ...

Страница 74: ... the chassis See Figure 5 23 Note Do not overtighten the captive screws or the lock block screw Figure 5 23 MLB Retainer Screws at the Rear of the Chassis 8 Install the lock block by inserting the screw through the lock block See Figure 5 24 58 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 75: ... Location NVRAM This section describes how to remove and replace the NVRAM Non Volatile Random Access Memory chip Removing the NVRAM Chip 1 Locate the NVRAM chip on the MLB in the chassis See Figure 5 25 Main Logic Board 59 ...

Страница 76: ... defective system board to Sun Installing the NVRAM Chip 1 Locate the NVRAM chip and remove it from the defective system board See Figure 5 25 2 Carefully align the pins and insert the NVRAM chip into the socket on the MLB in the chassis The carrier is keyed so the NVRAM can be installed only one way 3 Push the NVRAM chip into the carrier until it sits tightly in the socket 60 SPARCstation 10 Serv...

Страница 77: ...e you can install an MBus module in slot 0 Refer to the section Removing an MBus Module in this chapter 1 Push the MBus module retainers back See Figure 5 26 Figure 5 26 Installing an MBus Module 2 Insert the first MBus module in the lower slot MBus slot 0 To insert an MBus module Insert the back edge of the module between the metal lower and plastic upper tabs on the back panel The MBus module co...

Страница 78: ...odule connector down until it is fully seated on the MLB 4 Lock the module retainers in place by pushing the arms over the edge of the MBus module See Figure 5 28 Note The MBus module must be properly seated so that the module retainers lock securely over the module edges 62 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 79: ...the card Refer to the guide for your SBus product for the proper settings 2 Make sure the card retainers for the SBus slot are out of the way 3 Slide the SBus card at an angle into the back panel of the system unit and push it against the back panel Make sure the mounting plate on the SBus card hooks upward into the back panel of the system unit See Figure 5 29 Main Logic Board 63 ...

Страница 80: ...ation 10 has 4 SBus slots SBus slot 1 is above SBus slot 0 and SBus slot 3 is above SBus slot 2 Install SBus cards in the lower SBus slots first Figure 5 30 Location of SBus Slots on Main Logic Board 64 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 81: ...e pins Figure 5 31 SBus Card Plug Socket and Retainers 5 Push the rear card retainers forward over the edge of the SBus card locking them in place 6 Install the washers and screws you removed earlier into the screw holes adjacent to the SBus card on the back panel using a Phillips screwdriver The long side of the washer should be oriented vertically See Figure 5 32 Main Logic Board 65 ...

Страница 82: ...orresponding slots on the new MLB mounted in the chassis Figure 5 33 and Figure 5 34 show the back and front views of a SPARCstation 10 DSIMM The surface with the center vertical chip should face the system unit back panel when installed Figure 5 33 SPARCstation 10 DSIMM Back Panel View 66 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 83: ...SIMM Front Panel View To replace a DSIMM 1 Locate the DSIMM slots on the main logic board See Figure 5 35 Figure 5 35 DSIMM Slot Locations on Main Logic Board 2 See Table 5 3 for the proper installation sequence Main Logic Board 67 ...

Страница 84: ...the sequence shown in Table 5 3 TABLE 5 3 DSIMM Installation Sequence Installation Sequence Slot 1 J0201 2 J0304 3 J0203 4 J0302 5 J0303 6 J0301 7 J0305 8 J0202 DSIMM Insertion Tool If your system did not come with a DSIMM Insertion Tool press the DSIMM into place with your fingers 1 Identify the insertion tool and its two surfaces See Figure 5 36 and Figure 5 37 68 SPARCstation 10 Service Manual ...

Страница 85: ... Grooved Surface 2 Holding a DSIMM at its edges place it into the DSIMM plastic guides The surface without a center vertical chip must face the system unit front panel Be sure the center vertical chip is visible and that the key notch See Figure 5 38 Main Logic Board 69 ...

Страница 86: ...a 90 degree angle on the DSIMM board upper edge 4 Place the heel of each hand on each side of the insertion tool s pushing surface and press firmly with both hands on the tool until the DSIMM snaps into place See Figure 5 39 and Figure 5 40 70 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 87: ...ol 5 Put the insertion tool away in a toolbox or other storage place Do not leave the tool inside the system 6 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system Main Logic Board 71 ...

Страница 88: ...72 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 89: ...eded To remove and install the open boot PROM you need the following tools and materials 4 Phillips screwdriver size 1 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface 4 Card extractor 4 Chip extractor Removing the Open Boot PROM Power off the system and disconnect the expansion units refer to Chapter 4 73 ...

Страница 90: ...m and the wall outlet 3 Remove the system unit cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 4 Attach the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 5 Remove any SBus cards from slot 2 and 3 If there is an SBus card in slot 2 or 3 follow steps a through g for each card starting with the top card Note the SBus card location Go to step 6 otherwise ...

Страница 91: ...ot need card extractors Go to step g 9 Install the card extractor on the SBus card See Figure 6 2 Install two card extractors on an SBus card that occupies two slots Figure 6 2 SBus Card Card Retainers and Card Extractor 10 Hold both ends of the card extractor with your fingers and pull on both corners of the SBus card until the connector is out of the slot See Figure 6 3 for a single width SBus c...

Страница 92: ...oving a Double Width SBus Card 11 Remove the card extractor from the SBus card Save the card extractor for future use 12 Place the SBus card on the antistatic surface 13 Locate the open boot PROM on the MLB 76 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 93: ...igure 6 5 Figure 6 5 Location of Open Boot PROM 14 Remove the open boot PROM Use an IC extractor or small flat bladed screwdriver to remove the open boot PROM from its socket See Figure 6 6 Open Boot PROM 77 ...

Страница 94: ...t open boot PROM 2 Hold the PROM by both edges and match the notch on the open boot PROM with the notch on the socket See Figure 6 6 Note Do not touch the pins 3 Align the pins and insert the open boot PROM in the socket Match the pin 1 indicator on the open boot PROM with the indicator on the socket 78 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 95: ...f the system unit See Figure 6 7 Make sure the mounting plate on the SBus card hooks upward into the back panel of the system unit Figure 6 7 Installing the SBus Card in Slot 2 or 3 c Align the plug with the socket of the SBus slot Insert the plug into the socket by pressing with your fingers on the corners of the SBus card Caution Excessive force may bend or damage the pins d Slide the card retai...

Страница 96: ...riple width SBus cards require screws and washers in six places The long side of the washer should be oriented vertically as shown in Figure 6 8 Figure 6 8 Rear Panel Screws and Washers 5 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect any of the expansion unit s and power on the system 80 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 97: ...ls 4 Phillips screwdriver size 1 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface 4 Card extractor Removing the NVRAM Power off the system and disconnect the expansion units refer to Chapter 4 Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment c...

Страница 98: ...emove SBus card from slot 2 and 3 If there is an SBus card in slot 2 or 3 follow steps a through g for each card starting with the top card Note the SBus card location Go to step 6 otherwise a Remove the screws and washers from the outside of the rear panel where the SBus card is See Figure 7 1 Single width SBus cards have two screws and washers Double width SBus cards have four screws and washers...

Страница 99: ...dth SBus card Go to step g d Install the card extractor on the SBus card If the SBus card occupies two slots install two card extractors e Hold both ends of the card extractor with your fingers and pull on both corners of the SBus card on both corners until the connector is out of the slot Figure 7 3 shows a single wide SBus card Figure 7 4 shows a double width SBus card Non Volatile RAM NVRAM 83 ...

Страница 100: ... Card Figure 7 4 Removing a Double Width SBus Card i Remove the card extractor from the SBus card Save the card extractor for future use ii Place the SBus card on the antistatic surface 84 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 101: ...iggle the carrier as necessary 8 Place it on the antistatic surface Installing the NVRAM 1 Unpack the replacement NVRAM chip The NVRAM comes with its chip carrier 2 Hold the NVRAM chip on both sides of the carrier 3 Carefully align the pins and insert the NVRAM chip in the socket The carrier is keyed so the NVRAM can be installed only one way Non Volatile RAM NVRAM 85 ...

Страница 102: ...e mounting plate on the SBus card hooks upward into the holes at the back panel of the system unit Figure 7 6 Installing the SBus Card in Slot 2 or 3 8 Push the SBus card against the back panel Align the plug with the socket of the SBus slot and gently press the plug into the socket by pressing with your fingers on the corners of the SBus card Caution Excessive force may bend or damage the pins 9 ...

Страница 103: ...ashers in four places Triple width SBus cards require screws and washers in six places The long side of the washer should be oriented vertically See Figure 7 7 Figure 7 7 Rear Panel Screws and Washers 11 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect any expansion unit and power on the system Non Volatile RAM NVRAM 87 ...

Страница 104: ...88 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 105: ...Memory Module DSIMM from a SPARCstation 10 Tools Needed To remove and install a DSIMM you need the following tools and materials 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface Removing a DSIMM Power off the system and disconnect the expansion units Refer to Chapter 4 89 ...

Страница 106: ... grounded power outlet This connection provides the ground path necessary so that you can safely remove and install DSIMMs and other components Be sure that the system unit power is turned off by observing that the green light emitting diode LED at the front of the chassis is not lit 1 Remove the system unit cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 2 Attach the wrist s...

Страница 107: ...r side B of the DSIMM 7 Pull up on both corners B and C of the DSIMM until the board clears the socket Caution DSIMMs installed in your SPARCstation 10 system must be specifically designed to operate in it Do not remove DSIMMs from a different Sun system and install them in a SPARCstation 10 8 Place the DSIMM on an antistatic surface Installing the DSIMM 1 Locate the DSIMM slots on the main logic ...

Страница 108: ...SIMM 4 Place the DSIMM on the static shielding bag 5 See Table 8 1 for the proper installation sequence Note Slot J0201 must always have a DSIMM installed in order for your system to function properly In any SPARCstation 10 system it is the first slot to be filled with a DSIMM Each additional DSIMM should be installed in the sequence shown in Table 8 1 92 SPARCstation 10 Service Manual Revision A ...

Страница 109: ...If your system did not come with a DSIMM Insertion Tool press the DSIMM into place with your fingers If your system did come with a DSIMM Insertion tool see Figure 8 4 and Figure 8 5 follow the instructions in Steps 1 through 5 6 Identify the insertion tool and its two surfaces Figure 8 4 Insertion Tool Pushing Surface DSIMMs 93 ...

Страница 110: ...nter vertical chip must face the system unit front panel Be sure the center vertical chip is visible and that the key notch See Figure 8 6 Figure 8 6 Inserting a DSIMM Front Panel View 8 Place the grooved surface of the insertion tool on the upper edge of the DSIMM board See Figure 8 7 94 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 111: ...ss the tool down firmly until the DSIMM snaps into place See Figure 8 8 Figure 8 8 Heel of Each Hand 10 Put the insertion tool in a toolbox or other storage place Do not leave the tool inside the system 11 See Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system DSIMMs 95 ...

Страница 112: ...96 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 113: ...ials 4 Phillips screwdriver size 2 4 Card extractor 4 Wrist strap 4 Antistatic surface Removing the MBus Module 1 Power off the system and disconnect the expansion units Refer to Chapter 4 Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the board...

Страница 114: ...green light emitting diode LED at the front of the chassis is not lit and the fan in the power supply is not running 1 Check that the green LED at the front of the chassis is not lit 2 Check that the system power cord remains connected to the system and the wall outlet 3 Remove the system unit s cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 4 Attach the wrist strap Refer to...

Страница 115: ...Figure 9 1 MBus Module Card Retainers and Card Extractor 6 Install the card extractor on the MBus module See Figure 9 2 MBus Modules 99 ...

Страница 116: ...ard Extractor 7 Grasp both edges of the card extractor with your fingers and pull up on both corners of the MBus module until the connector is out of the slot See Figure 9 3 100 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 117: ...face 10 Repeat steps 6 through 10 to remove the module from slot 0 if it is to be replaced Installing an MBus Module 1 Open the protective packaging and take out the MBus module Note MBus slot 0 must have a module installed or the system will not work 2 Insert the back edge of the module between the metal lower and plastic upper tabs on the back panel MBus Modules 101 ...

Страница 118: ...3 Push the MBus module connector down into the socket See Figure 9 5 a Hold the corners of the MBus module connector b Press down firmly until the module sits into place Make sure the module is fully inserted into the slot Caution Excessive force may bend or damage the pins 102 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 119: ...ive module is in slot 0 install the module in slot 0 first Follow steps 2 through 6 to replace module in slot 1 Note If the module is not fully inserted into the MBus slot connector the card retainers may not lock over the module s edge 5 Detach the wrist strap and replace the cover Refer to the procedures in Chapter 17 6 Reconnect any peripherals to the system 7 Power on the system MBus Modules 1...

Страница 120: ...104 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 121: ...ard you will need the following tools and materials 4 Phillips screwdriver size 1 4 Phillips screwdriver size 2 4 Card extractor 4 Wrist strap 4 Antistatic surface Removing an SBus Card 1 Power off the system and disconnect the expansion units Refer to Halting the System on page 29 in Chapter 4 2 Make sure that the green LED on the front of the chassis is not lit 3 Leave the power cord connected t...

Страница 122: ...t with card s mounted in the top slot first Figure 10 1 SBus Slot Locations 7 Remove the screws and washers from the outside of the rear panel where the SBus card is fastened See Figure 10 2 Single width SBus cards have two sets of fastening hardware double width SBus cards have four sets and triple width SBus cards have six sets Save the screws and washers for future use 106 SPARCstation 10 Servi...

Страница 123: ...ard See Figure 10 3 Figure 10 3 SBus Rear Card Connectors 9 Install the card extractor shipped with the system on the SBus card Insert the legs of the extractor into the holes on either side of the connector See Figure 10 4 Install two card extractors on an SBus card that occupies two slots SBus Cards 107 ...

Страница 124: ...Extractor 10 Hold both ends of the card extractor and pull upwards slowly until the connector is out of the slot See Figure 10 5 and Figure 10 6 Figure 10 5 Removing a Single Width SBus Card 108 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 125: ...SBus Card Figure 10 7 Removing a Double width SBus Card 11 Remove the card extractor s from the SBus card Save the card extractor s for future use 12 Place the SBus card on an antistatic surface Save the SBus card for reuse SBus Cards 109 ...

Страница 126: ...d was shipped in 3 If required for your card set the jumpers or switches on the card Refer to the guide for your SBus product 4 If the card you are installing has tabs on the backplate remove the adapter bracket a Remove the two screws attaching the adapter bracket to the backplate See Figure 10 8 Figure 10 8 Removing the Adapter Bracket from the SBus Card b Save the adapter bracket and the screws...

Страница 127: ...ere are filler panels where you are going to install the SBus card you must remove them See Figure 10 9 Figure 10 9 Removing a Filler Panel 6 Push both rear card retainers back See Figure 10 10 SBus Cards 111 ...

Страница 128: ...gure 10 11 a Bend one leg of the retainer slightly to the outside until the hook clears the hole in the SBus card b Remove the other side of the retainer which should come out easily without bending it Figure 10 11 Removing the SBus Card Retainer 112 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 129: ...e SBus Card 10 Align the plug with the socket Gently press the corners of the card to push the plug into the socket Do not force the card or you may damage the pins on the card Caution Excessive force may bend or damage the pins 11 Press the card retainers forward over the edge of the SBus card See Figure 10 10 12 Install the fastening hardware you removed earlier into the screw holes adjacent to ...

Страница 130: ...SBus Card 13 To install top SBus cards repeat steps 1 through 12 14 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system 114 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 131: ...erials 4 Phillips screwdriver size 2 Caution Make sure to disconnect the power cord from the back panel of the system unit before removing the power supply assembly from the system unit Removing the Power Supply Assembly 1 Power off the system and disconnect the expansion units Refer to Chapter 4 2 Turn the power switch off O position 3 Check that the green LED at the front of the chassis is not l...

Страница 132: ...onnector from the DC power harness See Figure 11 1 8 Loosen the captive screw that secures the power supply assembly to the chassis See Figure 11 1 Figure 11 1 Disconnecting the Power Supply 9 Slide the power supply assembly toward the front of the chassis Sliding the power supply assembly unlocks the power supply from the power supply mounts See Figure 11 2 116 SPARCstation 10 Service Manual Revi...

Страница 133: ...er supply assembly in the chassis 2 Slide the power supply assembly toward the rear of the chassis until it locks in the power supply mounts See Figure 11 2 3 Secure the power supply assembly to the chassis by tightening the captive screw See Figure 11 3 Caution Overtightening the captive screw may damage the chassis Power Supply Assembly 117 ...

Страница 134: ...igure 11 3 5 Connect the DC power connector to the DC power harness See Figure 11 3 6 Make sure the power switch on the system unit is in the Off position Press the side labeled O 7 Plug in the system unit power cord 8 Follow the instructions in Chapter 17 to install the cover connect any expansion unit s and power on the system 118 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 135: ...set the SCSI Device ID jumpers for the type of drive you are installing When the jumpers are properly set each drive is automatically assigned a specific and unique SCSI Device ID number Tools Needed To remove and install the disk drive you need the following tools and materials 4 Phillips screwdriver size 2 4 Needlenose pliers 4 Wrist strap 4 Antistatic surface Removing a Disk Drive Power off the...

Страница 136: ... that the power cord remains connected to the computer system and to the wall outlet or power strip 4 Remove the system unit cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 Caution Hot surfaces are present Use care when opening the system chassis or handling components 5 Attach the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 6 Determine which drive ...

Страница 137: ...Figure 12 1 Hard Disk Drive Locations 7 Slide the hard disk drive toward the rear of the chassis to free the grommets from the drive mounts See Figure 12 2 Hard Disk Drives 121 ...

Страница 138: ... drive out of the chassis Place it on the antistatic surface Installing a Hard Disk Drive To install a hard disk drive you must do the following 4 Determine the location and type of drive to be installed 4 Verify and if necessary change the SCSI address jumpers 4 Verify that the configuration jumpers are set correctly 4 Install the disk drive 122 SPARCstation 10 Service Manual Revision A July 1993...

Страница 139: ... disk drive 4 1 05 Gbyte hard disk drive Depending on the drive the jumpers are either located near the lower right corner of the drive controller board or near the lower left corner See the figure s that correspond to your drive s and verify the jumper settings for the appropriate drive position In the figures the black jumper spaces indicate a jumper is in that position The white jumper spaces i...

Страница 140: ...umper of drive 1 must be set at 1 See Table 12 1 TABLE 12 1 SCSI Drive Jumper Settings and Addresses Drive Location Target ID Jumper Settings SCSI Address Position 0 A0 Installed A1 Installed A2 Not installed 3 Position 1 A0 Installed A1 Not installed A2 Not installed 1 424 Mbyte Jumper Settings To verify the SCSI ID jumpers 1 Make sure that the drive is on an antistatic surface either an antistat...

Страница 141: ...ng a 424 Mbyte Drive 1 Complete the procedure for setting drive jumpers See the Checking and Setting SCSI Jumpers on page 124 2 Remove the drive grommets from the defective drive 3 Set the replacement hard disk drive on an antistatic mat or the antistatic bag the drive was shipped in Hard Disk Drives 125 ...

Страница 142: ...1 on page 120 of the section Installing a 1 05 Gbyte Drive on page 126 to finish installing a 424 Mbyte disk drive Installing a 1 05 Gbyte Drive 1 Put the replacement drive on the antistatic bag the drive was shipped in 2 Set the SCSI ID jumper settings according to the drive position See Table 12 2 and Figure 12 7 126 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 143: ...ess 0 middle of chassis A0 installed A1 installed A2 not installed 3 1 corner of chassis A0 installed A1 not installed A2 not installed 1 Figure 12 7 SCSI Addresses of Both Disk Drives 3 Verify that the configuration jumpers are correctly set See Figure 12 8 and Table 12 3 Hard Disk Drives 127 ...

Страница 144: ...nym Definitions Acronym Definition RS Reserved DS Delayed Start ME Motor Enable Remote Spin up WP Write Protect PE Parity Enable SS Reserved TP Term Power from Drive TP Term Power to SCSI Bus 4 Remove the drive grommets from the defective drive 128 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 145: ... front two grommets near the drive connector and go to Step 1 on page 120 in this procedure 7 If not already installed insert two one piece screw in drive grommets and split washers on each side of the replacement drive rear away from the drive connector Use a Phillips screwdriver These grommets and the two front slip on grommets slide into the drive mounts during installation See Figure 12 9 Figu...

Страница 146: ...ws on the base two on the sides Figure 12 10 Positioning the Mounting Bracket over the Drive 9 Position the bracket over the drive and align the screw slots over the drive circuit board 10 Insert one screw on each side of the bracket to fasten the bracket sides to the drive sides 130 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 147: ...so they will be in position for connecting to the drive See Figure 12 11 Figure 12 11 DC Power Harness and Internal Cable Routing and Connectors 13 Hold the drive in one hand and attach the internal disk cable connector and the power harness connector to the drive with your other hand 14 Lower the drive into the chassis Align the four grommets on the drive mounts See Figure 12 12 Note Do not seat ...

Страница 148: ...ach the connector labeled P4 on the power harness to the drive 16 Connect the internal disk data connector to the disk drive The connectors are keyed so you can only connect them one way See Figure 12 11 a To connect drive 0 attach the internal disk data connector labeled J0107 on the system board to the drive b To connect drive 1 attach the internal disk data connector labeled J0106 on the system...

Страница 149: ...ve 1 17 Lower the drive into the chassis press the four drive grommets into the drive mounts Firmly seat the grommets by moving the drive forward toward the front of the chassis until the grommets sit tightly in the drive mounts See Figure 12 14 Hard Disk Drives 133 ...

Страница 150: ...the System Unit Cover on page 169 in Chapter 17 Note The cover will not close if the disk drive is not fully forward in the disk drive mounts 19 Connect any expansion units you previously removed to the system 20 Power on the system Perform the steps in the section Turn On the Power on page 172 in Chapter 17 134 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 151: ...s or work environment can destroy the components Wear a grounding strap when handling the drive Refer to Attaching the Wrist Strap on page 34 in Chapter 4 Do not touch the components or any metal parts Tools Needed To remove and install the diskette drive you will need the following tools and materials 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface Removing the Diskette Drive Fol...

Страница 152: ...ver on page 32 in Chapter 4 4 Attach the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 5 Remove both clips from the diskette drive mounts before you remove the diskette drive Keep the clips for future use See Figure 13 1 Figure 13 1 Removing Diskette Drive Clips 6 Slide the diskette drive toward the outer side of the chassis to free the grommets from the drive mounts See F...

Страница 153: ... diskette drive See Figure 13 2 8 Lift the diskette drive out of the chassis and put it on an antistatic surface Preparing the Diskette Drive Before installing a diskette drive you must check the diskette drive switch setting and make sure that the switch is set correctly as shown in Figure 13 3 Diskette Drive 137 ...

Страница 154: ... diskette drive in the system 1 Position the drive unit so that its data and power cables are facing the inner part of the chassis See Figure 13 4 2 Lower the drive into the chassis and align the three grommets into the drive mounts 138 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 155: ... the diskette drive The connectors are keyed so that it will fit only one way See Figure 13 4 4 Slide the diskette drive toward the center of the chassis until the three grommets sit tightly in the drive mounts 5 Insert the diskette drive clips into the drive mounts in their designated positions See Figure 13 5 Diskette Drive 139 ...

Страница 156: ...cover may not close if the diskette drive is not seated correctly in the drive mounts 6 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system 140 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 157: ...llowing tools and materials 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface Removing the DC Power Harness Power off the system and disconnect the expansion units Refer to Chapter 4 Caution The hard disk drive contains electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the components ...

Страница 158: ... chassis is not lit b Check that the system power cord remains connected to the system and the wall outlet c Remove the system unit cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 d Attach the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 e Slide the disk drive toward the rear of the chassis to free the grommets from the drive mounts See Figure 14 1 F...

Страница 159: ...e use i Note the drive location j Repeat steps e to i if a second drive is installed 2 Disconnect the DC power connector from the power supply See Figure 14 2 3 Disconnect the DC power connector from the diskette drive See Figure 14 2 4 Slide the DC power harness out of the cable clips in the base of the system and remove the DC power harness from the chassis Figure 14 2 DC Power Harness and Inter...

Страница 160: ...onnect the DC power connector to the diskette drive See Figure 14 3 3 Route the DC power harness through the cable clips See Figure 14 2 Note Make sure that the DC power harness and the internal drive cable lay flat 4 Verify that the jumper setting is correct for the drive location Figure 14 4 shows the proper jumper settings for drive 0 and drive 1 144 SPARCstation 10 Service Manual Revision A Ju...

Страница 161: ...Settings for Drive 0 and 1 5 Position the drive connectors toward the front of the chassis See Figure 14 5 6 Lower the drive into the chassis and align the grommets on the drive mounts See Figure 14 5 DC Power Harness 145 ...

Страница 162: ...drive and slide it forward toward the front of the chassis until the grommets sit tightly in the drive mounts 10 Follow steps 4 through 9 if a second drive is to be installed Note The system cover may not close correctly if the drive is not pushed forward far enough 11 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the sy...

Страница 163: ...tools and materials 4 Phillips screwdriver size 2 4 Wrist strap 4 Antistatic surface Removing the Internal Disk Cable Follow the instructions in Chapter 4 to power off the system and disconnect the expansion units Caution The hard disk drive contains electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy...

Страница 164: ...e chassis is not lit b Check that the system power cord remains connected to the system and the wall outlet c Remove the system unit cover Refer to Removing the System Unit Cover on page 32 in Chapter 4 d Attach the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 e Slide the disk drive toward the rear of the chassis to free the grommets from the drive mounts and lift the dri...

Страница 165: ...ic surface for future use i Note the disk drive location j Follow steps e through i if a second drive is installed 2 Remove the diskette drive from the system unit a Slide the diskette drive toward the outer side of the chassis to free the grommets from the drive mounts See Figure 15 2 Figure 15 2 Removing a Diskette Drive b Disconnect the DC power connector from the diskette drive See Figure 15 2...

Страница 166: ...e system unit a Disconnect the DC power connector from the power supply See Figure 15 3 Figure 15 3 DC Power Harness and Internal Disk Cable Layout b Slide the DC power harness out of the cable clips in the base of the system and remove the DC power harness from the chassis See Figure 15 3 4 Disconnect the LED connector from the LED See Figure 15 4 150 SPARCstation 10 Service Manual Revision A Jul...

Страница 167: ...he LED Connector from the LED 5 Disconnect the internal disk connector from the MLB See Figure 15 5 6 Slide the internal disk cable out of the cable clips in the system base and remove it from the chassis Internal Disk Cable 151 ...

Страница 168: ...5 Internal Disk Cable Installing the Internal Disk Cable 1 Lay out the internal disk cable on the chassis and slide it under the cable clips See Figure 15 6 152 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 169: ...the internal disk connector to the MLB 3 Insert the LED into the LED connector The longer LED pin should be inserted into the LED connector with the red wire See Figure 15 7 Figure 15 7 Inserting the LED into the LED Connector Internal Disk Cable 153 ...

Страница 170: ...h it into the cavity until it comes in contact with the locating stop See Figure 15 8 Figure 15 8 Connecting the LED Connector to the LED 5 Lay out the DC power harness in the chassis See Figure 15 9 154 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 171: ...ct the DC power connector to the power supply See Figure 15 9 b Position the drive unit so the data and power cables face the inside of the chassis c Lower the drive into the chassis and align the three grommets into the drive mounts See Figure 15 10 Internal Disk Cable 155 ...

Страница 172: ... only one way See Figure 15 10 f Slide the diskette drive toward the center of the chassis until the three grommets sit tightly in the drive mounts Note The system cover may not close if the diskette drive is not seated correctly in the drive mounts g Insert a clip into the diskette drive mounts at two places after installing the diskette drive See Figure 15 11 156 SPARCstation 10 Service Manual R...

Страница 173: ...alling Diskette Drive Clips 7 Install the hard disk drive a Verify that the jumper setting is correct for the drive location Figure 15 12 shows the proper jumper settings for drive 0 and drive 1 Internal Disk Cable 157 ...

Страница 174: ...r Settings for Hard Disk Drive 0 and 1 b Lower the drive into the chassis The connector side of the drive should be facing the front of the chassis See Figure 15 13 158 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 175: ...rive The connector is keyed so it will fit only one way e Lower the drive and slide it forward toward the front of the chassis until the grommets sit tightly in the drive mounts See Figure 15 14 Note If the drive is not pushed forward far enough and seated properly the system cover may not close correctly f Repeat steps a through e if a second disk drive is present Internal Disk Cable 159 ...

Страница 176: ...stalling the Disk Drive 8 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system 160 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 177: ...moving the LED Follow the instructions in Chapter 4 to power off the system and disconnect the expansion units Caution The hard disk drive contains electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the components Wear a grounding strap when handling the drive Refer to Attaching the Wrist Strap on pa...

Страница 178: ...the wrist strap Refer to Attaching the Wrist Strap on page 34 in Chapter 4 4 Remove the diskette drive from the system a Slide the diskette drive toward the outer side of the chassis to free the grommets from the drive mounts See Figure 16 1 Figure 16 1 Removing a Diskette Drive b Disconnect the DC power connector from the diskette drive See Figure 16 1 162 SPARCstation 10 Service Manual Revision ...

Страница 179: ...e diskette drive out of the chassis and place it on an antistatic surface 5 Disconnect the LED connector from the LED See Figure 16 2 Figure 16 2 Disconnecting the LED from the LED Connector 6 Push the LED in by using the tip of a Phillips screwdriver See Figure 16 3 Light Emitting Diode 163 ...

Страница 180: ...the LED from the Chassis 7 Slide the LED out of the chassis Installing the LED To install the LED 1 Insert the longer LED pin into the LED connector with the red wire 164 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 181: ...D connector See Figure 16 4 Figure 16 4 Connecting the LED to the LED Connector 3 Slide the LED into the LED cavity Push it into the cavity until it comes in contact with the locating stop See Figure 16 5 Light Emitting Diode 165 ...

Страница 182: ...he diskette drive See Figure 16 6 a Position the drive unit so the data and power cables face the inside of the chassis b Lower the drive into the chassis and align the three grommets into the drive mounts 166 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 183: ...te drive The connector is keyed so that it will fit only one way e Slide the diskette drive toward the center of the chassis until the three grommets sit tightly in the drive mounts Note The system cover may not close if the diskette drive is not seated correctly in the drive mounts f Insert clips into the diskette drive mounts at two places after installing the diskette drive Light Emitting Diode...

Страница 184: ...lling Diskette Drive Clips 5 Follow the instructions in Chapter 17 to detach the wrist strap install the cover connect the expansion unit s and power on the system 168 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 185: ...er 4 Connecting peripheral s to the system 4 Turning the power on Installing the System Unit Cover Note The card retainers on the MBus module should be pushed down over the edge of the module You will not be able to close the system unit cover properly otherwise To install the system unit cover 1 Hold the cover at an angle approximately as shown and gently guide the hinge tabs on the cover into th...

Страница 186: ...ur hands on the top rear of the cover Push down on both sides of the cover See Figure 17 2 Figure 17 2 Pushing Down on the Rear Cover Edges 4 Guide the cover down so that the plastic retainer clip snaps the cover to the rear panel See Figure 17 2 170 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 187: ... connector on the SCSI cable to the SCSI port on the system unit s back panel 2 See the Desktop Storage Pack Installation Guide for additional installation information Connecting an External Storage Module To connect the External Storage Module ESM to the system unit 1 Connect the SCSI connector on the SCSI adapter cable to the SCSI port on the system unit back panel 2 See the Sun External Storage...

Страница 188: ...oard A cable connects the keyboard to the system unit The keyboard port is located at the left rear of the system unit when viewed from the front Connect the keyboard cable on either the left or right side of the keyboard then to the port on the back of the system unit Turn On the Power After turning off the power to replace a part turning the power on again is relatively simple Caution This devic...

Страница 189: ...andling components Turn the power switches on in this order 4 Monitor 4 External drive unit s if you have one 4 System unit After a minute or so you should see the login prompt system messages system messages system messages system messages system messages system messages hostname login When you see the login screen you can log in to your system For more information on logging in see Chapter 2 of ...

Страница 190: ...174 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 191: ...ated is less than or equal to 187 watts The power supply automatically selects the correct AC voltage range TABLE A 1 Power Input Requirements and Power Dissipation for the System Unit Operating Voltage Range Maximum Input Current Maximum Input Power Maximum Input Volt Amperes Thermal Dissipation Operating Frequency Range 100 240 Vac 6A 187W 200W 406 BTU 47 63 Hz Environmental Requirements Table A...

Страница 192: ...ironment per declared noise emissions in accordance with ISO 9296 Non Operating Environment Temperature between 40 to 75 degrees C or 40 to 167 degrees F Humidity 95 relative humidity Altitude 19 3 kPa 12 km or 39 370 ft Vibration 1 0G peak all axes 12 mm peak peak 1 sweep at 1 octave min 5 500 5 Hz 10m minute dwell at a maximum of 4 resonant frequencies Shock 3 5 m sec velocity change 3 msec max ...

Страница 193: ... system unit Allow at least 3 inches 76 millimeters of unobstructed space on either side of the system unit Physical Dimensions Table A 3 lists the physical specifications for the system unit the keyboard and the optical mouse TABLE A 3 Physical Specifications Component Height Width Depth Net Weight System Unit 2 8 in 71 mm 16 in 409 mm 16 0 in 409 mm 25 lb 11 kg Keyboard Type 5 1 7 in 44 mm 20 1 ...

Страница 194: ...2 0 in 559 mm 24 0 in 610 mm 10 0 in 254 mm Regulatory Compliance Table A 5 lists regulatory compliance information TABLE A 5 Regulatory Compliance Information Product Safety EMI Ergonomics X Ray Emissions UL 1950 FCC Class B German Federal DHHS PTB CSA C22 2 No 950 VDE Class B Republic ZH 1 618 IEC 380 DOC Class B EN 60950 VCCI Class 2 178 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 195: ... new or replacement parts Table B 1 lists the replacement parts and their part numbers TABLE B 1 Replacement Parts List Replacement Parts Part Number Description Main Logic Board 501 2274 Main Logic Board Model 20 501 1733 Main Logic Board Model 30 and 41 501 2259 Main Logic Board Model 30 and 41 501 2365 Main Logic Board BABT Labeled Model 30 40 and 41 MBus Module 501 2218 Super SPARC Module 33MH...

Страница 196: ...ck EPROM 525 1183 EPROM Boot PROM Frame Buffer 501 1996 GX Frame Buffer 501 2018 GX Frame Buffer 370 1407 GS Frame Buffer Power Supply Assembly 300 1081 Power Supply 140W Speakerbox 540 2220 Speakerbox Hard Disk Drive 370 1392 424 MByte SCSI Disk Drive 370 1546 1 05 GByte SCSI Disk Drive Diskette Drive 370 1420 Triple Density Floppy Drive Drive Mounting Grommet 330 1390 Drive Mounting Grommet Driv...

Страница 197: ...ternal Disk Cable External Cables 530 1898 Video 4 5m 530 1856 AUI Audio Adapter 530 1857 Centronics Parallel Printer 5 0m 530 1861 IBM Parallel Printer 5 0m 530 1869 Serial Port Y Breakout Cable 0 5m 530 1871 ISDN Interface RJ45 4 0m Antistatic Mat 250 1088 Sun ESD Mat with Sun Logo 330 1145 Disposable ESD Mat Replacement Parts List 181 ...

Страница 198: ...182 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 199: ...c board MLB in place of fuses These devices are self healing they reset after a fault occurs and do not require replacement There are four PTCs on the MLB TABLE C 1 Positive Temperature Coefficient Devices Location on MLB For 1 F0601 Keyboard and Mouse 2 F1301 Thick Ethernet 3 F1302 Thick Ethernet 4 F1502 SCSI Termination Figure C 1 shows the location of these PTCs on the MLB 183 ...

Страница 200: ...keyboard speaker does not beep 4 The four LEDs on the keyboard do not flash when power is turned on to the system unit 4 A message is displayed on the system monitor No keyboard connected Ethernet PTC The Ethernet PTC protects the Ethernet transceiver from short circuits or overcurrent If you plug the Ethernet cable into the MLB and the Ethernet transceiver LED does not light the Ethernet PTC may ...

Страница 201: ...may be bad 4 The Ethernet cable or transceiver may have a problem such as a bad connection shorted center conductor to the shield or a broken cable segment SCSI Termination PTC The SCSI termination PTC protects an external SCSI device from short circuits or overcurrent To determine if the SCSI termination PTC is bad use a VOM and test the PTC using an open test for lack of continuity Positive Temp...

Страница 202: ...186 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 203: ... Density Connectors Figure D 1 Parallel and Audio AUI Connectors TABLE D 1 Parallel Connector Pin Assignments Pin Function I O Level Pin Function I O Level 1 DataStrobe I O 24 ma OC 14 AutoFeed O 24 ma TTL 2 Data Bit 0 I O 24 ma OC 15 Error I TTL 187 ...

Страница 204: ...ma OC 20 Shield GND 8 Data Bit 6 I O 24 ma OC 21 Shield GND 9 Data Bit 7 I O 24 ma OC 22 Shield GND 10 Ack I TTL 23 Shield GND 11 Busy I TTL 24 Shield GND 12 PE I TTL 25 Shield GND 13 Select I TTL 26 Shield GND TABLE D 2 Audio AUI Connector Pin Assignments Pin Function I O Level Pin Function I O Level 1 AUI_DO O Analog 14 AUI_DO O Analog 2 AUI_DI I Analog 15 AUI_DI_ I Analog 3 AUI_CI I Analog 16 A...

Страница 205: ...NC I O TTL 21 D C I O TTL 9 N C 22 N C 10 5 VDC O DC 23 Ground GND 11 5VDC O DC 24 Ground O GND 12 ExtPwrDn I TTL 25 N C 13 5 VDC O DC 26 Ground GND Stacked Micro High Density Connectors Signal Descriptions TABLE D 3 Parallel and Audio AUI Signal Description Signal Descriptions Parallel DataStrobe Data valid Strobe DataBit 0 7 Data Bits Ack Data Acknowledge Busy Busy PE Paper Error Select Select S...

Страница 206: ...egative AUI_DI Data In Positive Negative AUI_CI AUI Collision Positive Negative CHI_DX Digital Audio Data Transmit CHI_CLK Digital Audio Clock CHI_FS Digital Audio Frame Select CHI_DFSYNC Digital Audio Frame Sync CHI_RESET Digital Audio Reset CHI_DR Digital Audio Data Receive EMCTL External Mode Control D C Data Control Select 190 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 207: ...D 4 Keyboard Mouse Connector Pin Assignments Pin Function I O Level Pin Function I O Level 1 Ground O GND 5 KeyBd Out O TTL 2 Shield Shield 6 KeyBd In I TTL 3 5 VDC O VCC 7 PowerOn I TTL 4 Mouse In I TTL 8 5VDC O VCC Serial Ports A B Figure D 3 Serial Port A B Connectors Signal Descriptions 191 ...

Страница 208: ...232 423 6 DSR A I RS232 423 19 RTS B O RS232 423 7 Ground GND 20 DTR A O RS232 423 8 DCD A I O RS232 423 21 N C 9 N C 22 N C 10 N C 23 N C 11 DTR B I RS232 423 24 TxC A O RS232 423 12 DCD B I RS232 423 25 TxC B O RS232 423 13 CTS B I RS232 423 Keyboard Mouse and Serial Ports A B Signal Descriptions TABLE D 6 Keyboard Mouse and Serial Ports A B Signal Descriptions Signal Descriptions Mouse In Input...

Страница 209: ...TR B Data Terminal Ready Port B DCD B Data Carrier Detect Port B CTS B Clear To Send Port B XmitData B Transmit Data Port B TRxC A Transmit Clock Receive Port A RecData B Receive Data Port B RTxC A Secondary Transmit Clock Receive Port A TRxC B Receive Transmit Clock Port B Pullup RTS B Request to Send Port B DTR A Data Terminal Ready Port A TxC A Transmit Clock Port A TxC B Transmit Clock Port B ...

Страница 210: ...C 2 TPO O Analog 6 TPI I Analog 3 TPI I Analog 7 N C 4 N C 8 N C Twisted Pair Ethernet Twisted Pair Ethernet Signal Description TABLE D 8 Twisted Pair Ethernet Signal Description Signal Descriptions TPO Differential Twisted Pair Transmit Data TPI Differential Twisted Pair Receive Data 194 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 211: ...4 Ground GND 29 sd3 I O TTL 5 Ground GND 30 sd4 I O TTL 6 Ground GND 31 sd5 I O TTL 7 Ground GND 32 sd6 I O TTL 8 Ground GND 33 sd7 I O TTL 9 Ground GND 34 sdp I O TTL 10 Ground GND 35 Ground GND 11 Ground GND 36 Ground GND 12 Ground GND 37 Ground GND 13 Ground GND 38 Termpower I O TTL 14 Ground GND 39 Ground GND 15 Ground GND 40 Ground GND 16 Ground GND 41 atn O TTL Signal Descriptions 195 ...

Страница 212: ...st O TTL 21 Ground GND 46 msg O TTL 22 Ground GND 47 sel O TTL 23 Ground GND 48 cd O TTL 24 Ground GND 49 req O TTL 25 Ground GND 50 io O TTL SCSI Signal Description TABLE D 10 SCSI Signal Descriptions Signal Descriptions sd 0 7 SCSI Data Bits 0 to 7 sdp SCSI Data Parity atn Attention bsy Busy ack Acknowledge rst Reset msg Message 196 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 213: ...TABLE D 10 SCSI Signal Descriptions continued Signal Descriptions sel Select cd Control Data req Request io Input Output Termpower Termination Voltage Signal Descriptions 197 ...

Страница 214: ...198 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 215: ... PROM Refers to a specific PROM chip on the MLB This chip contains boot code and a Forth Monitor program The boot PROM is connected to the I O data bus boot PROM diagnostics The diagnostic firmware contained in the boot PROM These diagnostics include the Power On Self Test POST and on board diagnostics buffer The auxiliary data storage device which holds data temporarily and which may also perform...

Страница 216: ... or a CD ROM drive that can be connected to a SPARCstation 10 The external unit containing the tape drive is referred to as the Desktop Backup Pack The external unit containing a disk drive is specifically referred to as the Desktop Disk Pack The external unit containing a compact disc drive is specifically referred to as the Desktop SunCD Pack Desktop SunCD Pack An external unit containing a comp...

Страница 217: ...puter CPU and receives data from a computer CPU Examples of I O devices include keyboards mouses monitors and peripherals devices IU Integer Unit LANCE Local Area Network Controller for Ethernet LED Light Emitting Diode Location See address MLB Main logic board MBus module A printed circuit board installed in an MBus slot of the system unit that contained the CPU circuitry and components Monitor 1...

Страница 218: ...urs the PTC resets printed circuit board Any board with electronic wiring etched on it PROM Programmable Read Only Memory RAM Random Access Memory ROM Read Only Memory SBus card A printed circuit board installed in an SBus slot of the system unit SCC Serial Communications Controller SCSI Small Computer System Interface pronounced scuzzy SIA Serial Interface Adapter SunDiagnostic Executive An indep...

Страница 219: ...ack panel of the SPARCstation 10 system It is not the same thing as a monitor TOD Time of Day clock TPE Twisted pair Ethernet UART Universal Asynchronous Receiver Transmitter VRAM Virtual Random Access Memory wrist strap A device that provides grounding for static electricity between your body and the system unit chassis Electric current and voltage do not pass through the wrist strap Glossary 203...

Страница 220: ...Glossary 204 SPARCstation 10 Service Manual Revision A July 1993 ...

Страница 221: ...Index Index 205 ...

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