Sun Microsystems SPARC classic X Service Manual Download

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Chapter 11

Main Logic Board and Component Replacement

11-21

FIGURE 11-14

Main Logic Board Layout—SPARCstation LX (Part 270-2474)

11.4.2

Before Replacing the Main Logic Board

This section explains what steps to perform before removing and replacing the main
logic board.

I/O board

Hard drive
data connector

LED/speaker

connector

Keyboard soft

power-on

connector

Diskette drive
data connector

Power supply
connector

SIMM slot U0304

SIMM slot U0301

SIMM slot U0402

SIMM slot U0303

SIMM slot U0302

SIMM slot U0401

Bank 1

Bank 2

Bank 3

Bank 1

Bank 2

Bank 3

Video SIMM slot

SBus slot 0

SBus slot 1

NVRAM

Boot PROM

edge connector

ISDN
Jumpers

SCSI terminator
PTC

Keyboard/

mouse PTC

AUI PTC

Audio power
PTC

Summary of Contents for SPARC classic X

Page 1: ... com SPARCclassic SPARCclassic X SPARCstation LX Service Manual Part No 801 2176 13 Revision A November 1993 Sun Microsystems Computer Company A Sun Microsystems Inc Business 901 San Antonio Road Palo Alto CA 94303 4900 USA 650 960 1300 fax 650 969 9131 ...

Page 2: ...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...

Page 3: ... 3 Nonvolatile RAM NVRAM 1 6 1 1 4 Internal Hard Disk Drive 1 7 1 1 5 Internal Diskette Drive 1 7 1 1 6 Power Supply 1 7 1 2 Monitors Keyboard and Mouse 1 7 1 3 External Storage Devices 1 8 1 4 System Interconnections 1 8 2 Troubleshooting Overview 2 1 2 1 Default Boot Mode 2 1 2 2 Boot PROM Diagnostics 2 1 2 3 Low Level POST Code 2 4 2 4 Diagnostic Tools and When to Use Them 2 7 ...

Page 4: ... Connection to Another Workstation 3 5 3 5 Tests the POST Runs 3 6 3 6 POST Error Messages 3 8 3 7 Status Lights LEDs and Indicators 3 8 4 Troubleshooting Procedures 4 1 4 1 No Video Output on the System Monitor 4 2 4 2 Power On Does Not Succeed 4 2 4 2 1 Power Supply Test 4 3 4 2 2 System Board Test 4 5 4 2 2 1 Caps Lock Key Fails to Flash On and Off During POST 4 5 4 3 Disk Drive Errors 4 6 4 3 ...

Page 5: ...ystem Unit 7 4 7 5 Reconnecting the External Cables 7 7 8 Major Subassemblies 8 1 8 1 Power Supply 8 1 8 1 1 Removing the Power Supply 8 1 8 1 2 Replacing the Power Supply 8 3 8 2 Speaker Power LED Assembly 8 4 8 2 1 Removing the Speaker Power LED Assembly 8 4 8 2 2 Replacing the Speaker Power LED Assembly 8 6 8 3 System I O Board 8 7 8 3 1 Removing the System I O Board 8 7 8 3 2 Replacing the Sys...

Page 6: ...0 4 Main Logic Board Layouts 10 4 10 5 Identifying Replaceable System Board Components 10 6 11 Main Logic Board and Component Replacement 11 1 11 1 SBus Cards 11 1 11 1 1 Removing SBus Cards 11 1 11 1 2 Replacing SBus Cards 11 4 11 2 Video SIMM VSIMM 11 6 11 2 1 Removing the VSIMM 11 7 11 2 2 Replacing the VSIMM 11 9 11 3 DRAM Single In line Memory Modules DSIMMs 11 10 11 3 1 DSIMM Configurations ...

Page 7: ...tions A 3 A 4 Regulatory Compliance A 3 B System Connectors B 1 B 1 Attachment Unit Interface AUI Connector B 2 B 2 Twisted Pair Ethernet Connector B 3 B 3 ISDN Terminal Endpoint Connector B 3 B 4 ISDN Network Termination Connector B 4 B 5 Keyboard Mouse Connector B 5 B 6 SCSI Connector External B 6 B 7 Serial Connector B 7 B 8 Parallel Connector B 8 B 9 13W3 Video Connector B 9 B 10 Audio Ports a...

Page 8: ...15 Power Connector Internal B 14 C On Board Diagnostics C 1 C 1 Running the On Board Diagnostics C 1 C 1 1 Test alias name Test device path C 3 C 1 2 Test all C 4 C 1 3 Watch clock C 4 C 1 4 Watch net Watch aui Watch tpe and Watch net all C 4 C 1 5 Probe scsi Probe scsi all C 7 C 1 6 Test memory C 7 C 2 Returning to the Monitor Prompt C 8 Glossary Glossary 1 ...

Page 9: ...ngement of Type 5 Keyboard Diagnostic LEDs 3 2 FIGURE 3 2 SPARCstation System Banner 3 3 FIGURE 3 3 System Power LED on Front of System 3 8 FIGURE 3 4 Arrangement of the Type 5 Keyboard LEDs 3 9 FIGURE 4 1 Power Supply Connector 4 4 FIGURE 4 2 DSIMM Slot Locations 4 8 FIGURE 7 1 Opening the System Unit 7 3 FIGURE 7 2 Attaching the Wrist Strap 7 4 FIGURE 7 3 Closing the System Unit 7 6 FIGURE 7 4 R...

Page 10: ...Jumper Settings for Seagate 535 Mbyte Drive 9 8 FIGURE 9 7 Jumper Settings for 1 0 Gbyte Drive Part 370 1546 9 10 FIGURE 9 8 Jumper Settings for Seagate 1 0 Gbyte Drive 9 11 FIGURE 9 9 Jumper Settings for Connor 1 0 Gbyte Drive 9 12 FIGURE 9 10 Installing a Hard Disk Drive 9 14 FIGURE 9 11 Main Logic Board 9 15 FIGURE 9 12 Open View of System Unit 9 17 FIGURE 9 13 Removing the Disk Drive Mounting ...

Page 11: ...xtracting the Main Logic Board 11 27 FIGURE 11 16 Raising the Speaker LED Assembly 11 27 FIGURE 11 17 Removing and Replacing the Main Logic Board 11 28 FIGURE 11 18 Plugging in the Main Logic Board 11 30 FIGURE 11 19 Locating the NVRAM 11 32 FIGURE 11 20 Removing the NVRAM 11 32 FIGURE 11 21 Default SPARCstation LX ISDN Jumper Settings 11 33 FIGURE 12 1 Exploded View of the Unit Top 12 2 FIGURE 12...

Page 12: ...8 Parallel Connector B 8 FIGURE B 9 13W3 Video Connector B 9 FIGURE B 10 Audio Ports B 10 FIGURE B 11 Audio Line out Connector B 10 FIGURE B 12 Audio Line in Connector B 10 FIGURE B 13 Internal SCSI Connector B 11 FIGURE B 14 Diskette Drive Connector B 12 FIGURE B 15 SBus Connector B 13 FIGURE B 16 Power Connector B 14 ...

Page 13: ...3 Troubleshooting Disk Drive Errors 4 6 TABLE 4 4 Physical Memory Address Ranges for 4 Mbyte and 16 Mbyte SIMMs 4 8 TABLE 4 5 Physical Memory Address Ranges for 1 Mbyte and 2 Mbyte SIMMs 4 9 TABLE 4 6 Determining the Defective DSIMM 4 9 TABLE 5 1 Safety Precautions 5 2 TABLE 9 1 535 Mbyte Conner Drive Configuration Jumpers 9 7 TABLE 9 2 535 Mbyte Seagate Drive Configuration Jumpers 9 9 TABLE 9 3 1...

Page 14: ...l Specifications A 3 TABLE A 4 Regulatory Compliance Information A 3 TABLE B 1 Pinout for Attachment Unit Interface AUI Connector B 2 TABLE B 2 Pinout for Twisted Pair Ethernet Connector B 3 TABLE B 3 Pinout for ISDN Terminal Endpoint Connector B 3 TABLE B 4 Pinout for ISDN Network Termination Connector B 4 TABLE B 5 Pinout for Keyboard Mouse Connector B 5 TABLE B 6 Pinout for External SCSI Connec...

Page 15: ...RCstation product line s standard features and its external options Part 2 Troubleshooting provides a troubleshooting overview explains how to run the Power On Self Test POST and other system diagnostics and gives troubleshooting procedures for some frequently encountered problems Part 3 Preparing for Service explains safety requirements the symbols used in this book the tools required for replaci...

Page 16: ...mbol Meaning Example AaBbCc123 The names of commands files and directories on screen computer output Edit your login file Use ls a to list all files system You have mail Return In text key names are capitalized Press the Return key Stop a Press and hold the Stop key then type the second character Press Stop a AaBbCc123 What you type contrasted with on screen computer output system su Password AaBb...

Page 17: ...pherals Sundiag User s Guide Addendum for SMCC Hardware covers Sundiag topics that are specific to SPARCstation systems Desktop SPARC Hardware Owner s Guide provides step by step instructions on how to install the system s hardware and software Using a SPARCclassic X Terminal contains instructions on how to install the SPARCclassic X hardware Installing SPARCclassic SPARCclassic X SPARCstation LX ...

Page 18: ...t needs to be replaced Sun ISDN BRI SBI Hardware Configuration Guide explains about configuring ISDN jumpers Notes Cautions and Warnings Caution Improper handling by unqualified personnel can cause serious damage to this equipment Unqualified personnel who tamper with this equipment may be held liable for any resultant damage to the equipment Individuals who remove any outer panels to access this ...

Page 19: ... System Interconnections The SPARCclassic or the SPARCstation LX systems also can have an external storage device or other small computer system interface SCSI serial or parallel port devices attached The SPARCclassic X terminal software does not currently support external devices 1 1 System Unit The heart of the SPARCclassic and SPARCstation LX systems is the system unit which contains the follow...

Page 20: ...are either not available or are inactive and are consequently covered by connector covers Diskette drive slot SCSI port Audio port Parallel port Internally the SPARCclassic X terminal differs from the basic SPARCclassic system by the absence of the disk drive and diskette drive The annotations to FIGURE 1 2 and FIGURE 1 3 indicate the differences among the SPARCclassic system the SPARCstation LX s...

Page 21: ... port Twisted pair Ethernet port ISDN network termination port ISDN terminal endpoint port SBus card connector openings AC power switch System unit AC power receptacle Courtesy AC power outlet Lock block SCSI port B B A A Serial ports A B 13W3 video port monitor Inactive and covered on the SPARCclassic X terminal Note Shaded items on SPARCstation LX only ...

Page 22: ...lassic and the SPARCclassic X main logic board while FIGURE 10 2 and FIGURE 10 3 show the SPARCstation LX main logic boards Customer replaceable units CRUs residing on the main logic board include Memory modules Video single in line memory modules VSIMMs SPARCstation LX only SBus cards Nonvolatile random access memory NVRAM UNIT BOTTOM Main logic board SBus slots SBus card Speaker Power LED assemb...

Page 23: ...te DSIMMs You can combine different types of DSIMMs in the same system however you must add DSIMMs in identical pairs That is you can add a pair of 4 megabyte DSIMMs or a pair of 16 megabyte DSIMMs but you can t add a single DSIMM or add one of each type FIGURE 1 4 Typical DSIMM 1 1 2 1 Video SIMM SPARCstation LX systems can accommodate an optional 1 megabyte video SIMM VSIMM The VSIMM plugs into ...

Page 24: ...rovides you with an extra Ethernet port The Ethernet card is used in applications in which your SPARCstation acts as a gateway between two physically distinct Ethernet networks This card has two connectors standard thick Ethernet and twisted pair Ethernet It occupies one SBus slot Video Frame Capture Card This card occupies one SBus slot This card takes video input and displays it on color or mono...

Page 25: ...drive is optional on both SPARCclassic and SPARCstation LX systems It is not available for the SPARCclassic X terminal 1 1 6 Power Supply The 70 watt power supply is housed in the unit top It connects to the main logic board via a 12 pin connector and provides 5 12 and 12 volts DC The power supply also supplies the power on reset signal Some of the power supply s features include the following Aut...

Page 26: ...bytes hard disk drive only Desktop Storage Module 2 3 Gbytes tape drive only Desktop Storage Module 5 0 Gbytes tape drive only See the external storage device installation guide that comes with the device for installation procedures and for information about daisy chaining external drive units External storage devices are not available for the SPARCclassic X terminal 1 4 System Interconnections FI...

Page 27: ...l External drive AC power cable AC power cable system unit Monitor External drive SCSI cable Monitor power cable 13W3 video cable Keyboard cable Keyboard Mouse and cable Thick Ethernet via adapter cable ISDN connectors SPARCstation LX only Serial connectors Parallel connector Twisted pair Ethernet Audio input output jacks ...

Page 28: ...1 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 29: ... and When to Use Them Section 2 5 Power On Self Test Section 2 6 Selected On Board Tests Section 2 7 Sundiag System Exerciser Section 2 8 Forth Toolkit Section 2 9 SunDiagnostic Executive 2 1 Default Boot Mode The flowchart in FIGURE 2 1 outlines the roles played by various diagnostics during the default boot mode s operation Note The operating system diagnostic tools as indicated in FIGURE 2 1 do...

Page 30: ...o Ethernet SCSI memory and diskette drive tests See Appendix C On Board Diagnostics for more information Note The SCSI and diskette drive controller tests do not apply to the SPARCclassic X terminal The following sections describe the relationship between the various diagnostic tools and the role each tool plays during the default boot mode A graphical depiction is provided by the flowchart in FIG...

Page 31: ...ystem banner appears on screen Auto boot Diag switch Boot from device alias net Boot user specified device and program Normal operating system Sundiag System Exerciser True False True False default Press Stop a to get to the ok prompt Boot command at ok prompt Low level POST On board diagnostics ok prompt No Yes default and serial port A POST passed Yes No Stop d keys Yes No Diag switch True False...

Page 32: ...er On Self Test POST for more information If the low level POST passes the system probes for SBus devices and interprets their drivers Next a system banner appears on the screen and the high level testing begins During this time the screen displays a series of messages that start with the word Testing Any problems detected during this phase of testing are indicated with error messages on the scree...

Page 33: ...T and Boot Sequence NVRAM Parameter Description selftest megs Default 1 This parameter determines how many megabytes of memory to test during high level POST The minimum is zero the maximum is the amount actually installed in the system diag switch Default False When set to True this parameter forces the system to test automatically all available memory It also enables diagnostic message output to...

Page 34: ...cutive Refer to Section 2 9 SunDiagnostic Executive on page 2 10 for further information To boot user specified programs such as the SunDiagnostic Executive you must be at the prompt or ok prompt See Appendix C On Board Diagnostics for a detailed procedure on how to access the or ok prompt Note Remember that the System Exerciser and the SunDiagnostic Executive do not run on the SPARCclassic X term...

Page 35: ...undiag System Exerciser Runs under the operating system It displays real time use of the system resources and peripherals The Sundiag System Exerciser tells you if your system is functioning correctly 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 This test is...

Page 36: ...net port and to an Ethernet tap or the test will fail the external loopback phase test net tpe Performs internal and external loopback tests on the twisted pair Ethernet TPE interface A cable must be connected to the system TPE port and to a TPE hub or the test will fail the external loopback phase If the tpe link test parameter is False disabled the external loopback test will appear to pass even...

Page 37: ...oolkit The Forth Toolkit is a basic diagnostic utility and system interface If there is any problem with your operating system the Forth Toolkit automatically starts as indicated by the appearance of the ok prompt You can also choose to access the Forth Toolkit by halting the system For information on how to access the Forth Toolkit see Appendix C On Board Diagnostics test tape test tape0 test tap...

Page 38: ... operating system It runs exhaustive subsystem tests that are independent of the normal operating system Run the SunDiagnostic Executive if all POSTs pass but your system still has a problem For information about POST see Section 3 1 Power On Self Test POST on page 3 1 The SunDiagnostic Executive is described in the SunDiagnostic Executive User s Guide for the SPARCstations Note The SunDiagnostic ...

Page 39: ... in the Open Boot PROM located on the system board There are two POST modes Normal and Diagnostic 3 1 Power On Self Test POST The Power On Self Test POST runs when you turn on the system unit power switch and any of the following conditions apply Keyboard is disconnected Stop d keys are held down when you turn on the power diag switch NVRAM parameter is set to true The POST comprises a sequence of...

Page 40: ...ion of the POST FIGURE 3 1 Arrangement of Type 5 Keyboard Diagnostic LEDs If the system fails any POST one of the LEDs will light to indicate the nature of the problem The LED may be lit continuously or for just a few seconds TABLE 3 1 provides the meaning of each diagnostic LED TABLE 3 1 Interpreting the Keyboard Diagnostic LEDs Diagnostic LED Failed Part Num Lock LED is lit Main logic board Scro...

Page 41: ...r interpret the LEDs as diagnostic error indicators FIGURE 3 2 SPARCstation System Banner Following the system s successful initialization the operating system is booted automatically unless the NVRAM configuration options specify otherwise You can retrieve more detailed POST failure information by connecting a terminal to the ttya serial port If you connect a terminal you must set the NVRAM param...

Page 42: ... you set the diag switch NVRAM parameter to true in the Open Boot PROM Note POST does not perform extensive testing on any system board component POST detects only major failures To view error messages returned by POST connect a terminal to serial port A or use a tip connection to another workstation If you do not connect a terminal to serial port A or use a tip connection the screen will be blank...

Page 43: ...ect the system s serial port ttya to another Sun workstation ttya serial port using a serial connection cable This connection is made with a 3 wire null modem cable Connect wires 3 2 2 3 and 7 7 2 At the other Sun workstation add the following lines to the file etc remote 3 In a Shell Tool window on the Sun workstation type tip hardwire Some commands will not work properly in a Command Tool window...

Page 44: ...r Reg Test MMU TLB RAM NTA Pattern Test MMU TLB CAM NTA Pattern Test IOMMU SBUS Config Regs Test IOMMU Control Reg Test IOMMU Base Address Reg Test IOMMU TLB Flush Entry Test IOMMU TLB Flush All Test SBus Read Time out Test EBus Read Time out Test D Cache RAM NTA Test D Cache TAG NTA Test I Cache RAM NTA Test I Cache TAG NTA Test Memory Address Pattern Test FPU Register File Test FPU Misaligned Re...

Page 45: ...rupt Regs Tests Soft Interrupts OFF Test Soft Interrupts ON Test PROC0 User Timer Test PROC0 Counter Timer Test DMA2 E_CSR Register Test LANCE Address Port Tests LANCE Data Port Tests DMA2 D_CSR Register Test DMA2 D_ADDR Register Test DMA2 D_BCNT Register Test DMA2 D_NADDR Register Test ESP Registers Tests DMA2 P_CSR Register Test DMA2 P_ADDR Register Test DMA2 P_BCNT Register Test PPORT Registers...

Page 46: ...ooting Procedures shows flow diagrams of actions to take when the system LED is not lit FIGURE 3 3 System Power LED on Front of System This section describes the keyboard LED sequences displayed at power up when POST fails If a failure occurs in POST the keyboard displays a specific LED pattern See FIGURE 3 4 and TABLE 3 1 During normal system operation the LEDs should not be interpreted as diagno...

Page 47: ... the Caps Lock key fails to flash on and off after you have pressed and held the Stop d keys when you power on the system POST failed See Section 4 2 2 System Board Test for troubleshooting information Scroll Lock LED Num Lock LED Caps Lock LED UNIX keyboard Caps Lock U S keyboard Compose LED ...

Page 48: ...3 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 49: ... connected the power supply is defective Replace the power supply See Chapter 8 Major Subassemblies Disk drive fails to boot or does not respond Shut down the system The SCSI controller may be defective See Section 4 3 1 Verifying the Built In SCSI Controller If the SCSI controller is OK verify that SCSI ID jumpers are set correctly and that every disk drive on the SCSI bus is set to a different S...

Page 50: ...Slow disk drive response If many SCSI devices are connected to the same SCSI bus and if some of these devices are fast SCSI devices you can install an FSBE S SBus card to the fast SCSI devices to speed up performance Read write or parity error reported by the operating system or applications Replace the disk drive indicated by the failure message The operating system identifies the internal disk d...

Page 51: ...yboard but the system still fails to initialize see Section 4 2 2 System Board Test 5 If the system power supply is internally fused check the fuse The fuse could be blown If the power supply is working you should hear the fans humming 4 2 1 Power Supply Test 1 Use a VOM Volt Ohmmeter to check the power supply output voltages Place the VOM negative probe on one of the logic ground pins in the conn...

Page 52: ... Supply Connector TABLE 4 2 shows the pin assignments on the power supply connector TABLE 4 2 Power Supply Connector Pin Assignments Pin Description Pin Description 1 5 Vdc 7 5 Vdc 2 5 Vdc 8 5 Vdc 3 Ground 9 Ground 4 Ground 10 Ground 5 12 Vdc 11 12 Vdc 6 POK 12 12 Vdc 1 2 3 4 5 6 7 8 9 10 11 12 ...

Page 53: ...POST If the Caps Lock key fails to flash on and off after you have pressed and held the Stop d keys POST failed b To further troubleshoot the system board see Section 4 2 2 1 Caps Lock Key Fails to Flash On and Off During POST 3 Observe the keyboard LEDs If a failure occurs during POST an LED may light up TABLE 3 1 in Chapter 3 Power On Self Test POST describes types of problems that occur when an...

Page 54: ...ndicated by the failure message The operating system identifies the internal disk drive 0 SCSI target ID 3 as sd0 and internal disk drive 1 SCSI target ID 1 as sd1 Drive fails to boot or does not respond to commands SCSI controller may be defective See Section 4 3 1 Verifying the Built In SCSI Controller If SCSI controller is OK the SCSI ID jumpers or configuration jumpers may be set incorrectly R...

Page 55: ...ations The Sundiag System Exerciser SunDiagnostic Executive and POST diagnostics can report memory errors encountered during program execution For general information about diagnostics see Chapter 2 Troubleshooting Overview Memory error messages on the video monitor usually indicate a physical memory address where the error was detected Depending on the diagnostic program you are running a DSIMM l...

Page 56: ...ons in Section 11 3 3 Replacing a DSIMM on page 11 15 FIGURE 4 2 DSIMM Slot Locations TABLE 4 4 Physical Memory Address Ranges for 4 Mbyte and 16 Mbyte SIMMs Physical Memory Address Ranges Bank SIMM 4 Mbyte SIMMs 16 Mbyte SIMMs 1 U0304 0000000 through 07FFFFF 0000000 through 1FFFFFF 1 U0303 0000000 through 07FFFFF 0000000 through 1FFFFFF 2 U0301 2000000 through 27FFFFF 2000000 through 3FFFFFF 2 U0...

Page 57: ...k SIMM 1 Mbyte SIMMs 2 Mbyte SIMMs 1 U0304 0000000 through 01FFFFF 0000000 through 01FFFFF 1 U0303 0000000 through 01FFFFF 0400000 through 05FFFFF 2 U0301 2000000 through 21FFFFF 2000000 through 21FFFFF 2 U0302 2000000 through 21FFFFF 2400000 through 25FFFFF 3 U0402 4000000 through 41FFFFF 4000000 through 41FFFFF 3 U0401 4000000 through 41FFFFF 4400000 through 45FFFFF TABLE 4 6 Determining the Def...

Page 58: ...4 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 59: ... 5 1 Safety Requirements Section 5 2 Symbols Section 5 3 System Precautions Section 5 4 Tools Required 5 1 Safety Requirements For your protection observe the following safety requirements Follow all cautions warnings and instructions marked on the equipment Ensure that the voltage and frequency rating of the power outlet to be used matches the electrical rating labels on the system Use properly g...

Page 60: ... Leaving the AC power cord plugged into the wall outlet provides a grounding path for the wrist strap which must be attached Wrist strap Electrostatic Discharge ESD Wear a wrist strap when handling printed circuit boards drives or other components such as SIMMs ESD mat ESD An approved antistatic mat provides protection from static damage when used with a wrist strap The mat also cushions and prote...

Page 61: ...ument must be performed by trained maintenance providers Only people who have been trained at the Sun Microsystems training facilities or at Sun Microsystems affiliates and have been certified as required by local and national laws are considered qualified Caution Before you begin carefully read each of the procedures in this manual If you have not performed similar operations on comparable equipm...

Page 62: ...n you need to place a part on an antistatic surface The following items can be used as antistatic surfaces Bag that is used to wrap a Sun replacement part Shipping container that is used to package a Sun replacement part Inner surface of the system unit cover Sun electrical static discharge ESD mat with Sun logo Contact your Sun sales representative to purchase it Disposable ESD mat You can purcha...

Page 63: ...is working normally or not as described in the next sections Caution When the operating system or any other standalone program has already booted do not use the Stop a keys to halt the system Using the Stop a keys to abort program execution can damage data files 6 1 1 Powering Off When the System Is Working Normally To halt your system when it is working normally 1 Save all your work Consult your ...

Page 64: ... and press Return 4 To inform other system users of your intentions and to then halt the system use Step 3 5 To halt the system immediately continue with Step 3 a Type usr sbin shutdown 5 and press Return The example above uses 5 minutes for a warning period to other system users Use appropriately chosen switch settings to inform other system users of your intentions see shutdown 1 Continue with S...

Page 65: ...system does not respond to the mouse and keyboard pressing Stop a will not be effective You may have to turn the power off wait at least 10 seconds and turn the power on again Then try pressing Stop a once more Note Steps 3 through 6 are not necessary for the SPARCclassic X terminal When the ok or prompt appears boot the operating system Enter boot at the ok prompt or b at the prompt 3 When you se...

Page 66: ... power to your system be sure to close the system unit It is not safe to operate your SPARCstation while the system unit is open Caution These devices are equipped with a 3 wire grounded power cord To reduce the risk of electrical shock always plug the power cord into a properly grounded power outlet Caution Always allow 10 seconds between turning off the power and turning it back on again This pa...

Page 67: ...if you turned it off 3 Desktop SPARCstation system unit 3 Boot the operating system The operating system may start to boot automatically or you may need to enter a command at the system prompt What you do next depends on the operating system software you are using Consult the documentation supplied with your operating system for instructions on booting and logging in to your system ...

Page 68: ...6 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 69: ...stem Unit Section 7 5 Reconnecting the External Cables 7 1 Disconnecting the External Cables Detach all cables connected to the rear of the system unit Take care to remember where each cable attaches to the system unit Note Do not disconnect the power cord from the system unit s power receptacle The power cord should remain connected to a grounded power outlet To disconnect the SCSI cable 1 Press ...

Page 70: ...pen the system unit and gain access to the CRUs inside it 1 Make sure that the system power switch is in the Standby position The green LED on the front of the system unit should not be lit and the fan should not be running Leave the AC power cord connected to both the system unit and wall outlet 2 Position the system on the table with the rear panel facing you Leave enough space to lay the unit t...

Page 71: ...st strap or grounding strap provides grounding for static electricity between your body and the chassis of the system unit Electric current and voltage do not pass through the wrist strap Before you handle any components inside the system unit attach the wrist strap to your wrist and to the metal casing of the power supply Caution Boards and modules can be damaged by harmful electrical charges if ...

Page 72: ...st Strap To detach a wrist strap 1 Unwrap the grounding strap from your wrist 2 Detach the end with the adhesive copper strip from the metal casing of the power supply in the top of the system unit 7 4 Closing the System Unit To close the system unit 1 Preparation a Check that there are no loose tools or screws in the unit b Check that all SBus cards and SIMMs are seated properly c Check that all ...

Page 73: ... angle Continue to hold the cover with your hands 4 Reconnect the unit top and bottom see FIGURE 7 3 a Rest the front edges together to connect the interlock hooks by pushing gently toward the back of the unit b As you lower the unit top continue to push back to secure the connection The unit top will rest slightly forward c Gently push the unit top back a few millimeters until the unit top and bo...

Page 74: ... 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 FIGURE 7 3 Closing the System Unit Align hooks push top toward rear and close Interlock hooks Reattach lock block to back panel ...

Page 75: ...nents Monitor Monitor power cable External drive optional External drive AC power cable External drive SCSI cable 13W3 video cable Keyboard cable Mouse and cable Keyboard AC power cable system unit SCSI terminator Audio input output jacks Serial connector Parallel connector ISDN connectors SPARCstation LX Twisted pair Ethernet Thick Ethernet via adapter ...

Page 76: ...Cstation LX Service Manual November 1993 See the Desktop SPARC Hardware Owner s Guide or Using a SPARCclassic X Terminal for complete details about cabling To turn on power to the system See Section 6 2 Powering On the System on page 6 4 ...

Page 77: ...holds the top and bottom halves of the unit together also retains the power supply The power supply wiring harness branches into four separate power cables A 12 pin power cable connects to the main logic board in its right front corner see FIGURE 9 13 Nearby a 3 pin cable provides the keyboard soft power on signal from the main logic board to the power supply Two 4 pin power cables supply power to...

Page 78: ...6 for removing the disk drive mounting bracket ignore step 1 and the Caution that follows it 4 Make sure that you disconnected the power supply wiring harness from the diskette drive hard disk drive and main logic board 5 Disconnect the system unit AC power cord and detach the wrist strap from the power supply For this procedure the power cord must not bee connected between the system unit and the...

Page 79: ...on 2 Install the new power supply 1 Align the holes in the bottom of the power supply with the hooks in the system unit top see FIGURE 8 1 2 Lower the power supply into the unit top as shown 3 Properly position the power supply by pushing it firmly toward the rear of the unit about 0 25 inch until it engages with the hooks 3 Reattach the wrist strap to the metal casing of the new power supply Remo...

Page 80: ...o perform the following procedures Detaching the wrist strap Closing the system unit Reconnecting system components 8 Refer to Chapter 6 Power Off and On to turn the power on After turning the power back on check for proper operation of the system unit and the newly installed power supply If the newly installed power supply still does not work properly a problem may exist in the system unit such a...

Page 81: ... switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard ...

Page 82: ...FIGURE 8 2 and slide it down into its channel guides until it snaps into place Caution Do not touch or press on the speaker cone You may damage the speaker or the sound quality 3 Reconnect the speaker LED cable to its connector on the main logic board The connector is keyed to fit only one way For the connector location see Chapter 11 Main Logic Board and Component Replacement 4 Refer to Chapter 7...

Page 83: ... the metal casing of the power supply at the rear of the unit top 8 3 1 Removing the System I O Board To remove the system I O board 1 Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit detach all peripherals and attach a wrist st...

Page 84: ... conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard FIGURE 8 3 System I O Board and Unit Bottom 2 Place an antistatic mat shiny side down next to the system unit 3 Remove any SBus cards installed in the system unit See Section 11 1 SBus Cards on page 11 1 for remov...

Page 85: ...main logic board 4 Disconnect the diskette drive and hard disk drive data cables from their connectors at the front of the main logic board 5 Remove the main logic board 1 Pull the main logic board extractor lever toward the front of the system unit to disconnect the main logic board from the system I O board see FIGURE 8 4 2 Raise the speaker assembly to allow removal of the main logic board see ...

Page 86: ...November 1993 FIGURE 8 4 Extracting the Main Logic Board FIGURE 8 5 Raising the Speaker LED Assembly System I O board Main logic board Speaker power LED assembly Main logic board extractor Squeeze the two levers at the base of the assembly and slide the assembly up ...

Page 87: ...e Main Logic Board 6 Remove the system I O board 1 On the SPARCclassic X terminal pull the plastic connector covers off the inactive ports to gain access to the screws System I O board Main logic board Main logic board extractor lever Speaker power LED assembly UNIT BOTTOM ...

Page 88: ...m I O board a Position the system I O board so that its connectors protrude through their respective openings in the system unit chassis b Align the screw holes in the chassis with the holes in the system I O board and secure the board with the 10 screws provided see FIGURE 8 7 Replace the plastic connector covers if necessary 2 Reinstall the main logic board a Grasp the board by the SBus connecto...

Page 89: ...ion 3 Reconnect all cables that attach to the main logic board Each connector is keyed to fit only one way For connector locations see Chapter 11 Main Logic Board and Component Replacement a Connect the 12 pin connector from the power supply harness to its mating connector on the main logic board b Connect the 3 pin connector from the power supply harness to the keyboard soft power on connector on...

Page 90: ...n 11 1 2 Replacing SBus Cards on page 11 4 for installation details 5 Refer to Chapter 7 Internal Access to perform the following procedures Detaching the wrist strap Closing the system unit Reconnecting system components 6 Refer to Chapter 6 Power Off and On to turn the power on System I O board Main logic board Main logic board Speaker power LED assembly extractor lever ...

Page 91: ...hard disk drive and diskette drive contain electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the components Do not touch the components themselves or any metal parts Always wear a grounding strap when handling these drives Attach the strap to your wrist and to the metal casing of the power supply Ca...

Page 92: ... 1 Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 2 Place an antistatic mat shiny side up next to the system unit 3 Disconnect the hard driv...

Page 93: ... After you are satisfied that the SCSI ID jumpers are correct follow the directions later in the chapter for installing the hard drive Hard drive power cable Hard disk drive Drive screw holes Pull tab Diskette drive Main logic Keyboard soft power on cable Cable Power supply UNIT TOP data cable power cable management guides Pull tab Disk drive bracket without grommet Disk drive bracket with grommet...

Page 94: ...strations applies to your hard drive To verify the jumper settings on the hard drive 1 Remove the replacement drive from its protective packaging and set it with the component side up on the antistatic mat You now have access to the drive controller board 2 Inspect the jumper settings a Determine which illustration among FIGURE 9 2 through FIGURE 9 7 matches your drive b Compare the jumper setting...

Page 95: ...Devices 9 5 FIGURE 9 3 Jumper Settings for 207 Mbyte Drive With Jumpers on the Right Hand Side A0 A1 SS enable self seek A2 EP enable parity checking WS enable wait spin SCSI device address Power Data connector connector ...

Page 96: ...classic X SPARCstation LX Service Manual November 1993 FIGURE 9 4 Jumper Settings for 424 Mbyte Drive A0 A1 A2 Internal term power Term power to Bus Delay spin up Parity EN Remote spin up Factory default SCSI device address ...

Page 97: ...uration Jumpers Pin Pair Description Factory Set E1 SCSI ID address Yes E2 SCSI ID address Yes E3 SCSI ID address No E5 E4 E3 E2 E1 Power connector SCSI device E1 and E2 jumpered address jumpers SCSI power E5 jumpered SCSI address 3 terminator Data connector SCSI power terminator E6 not jumpered A0 E1 0 or 1 when jumpered A1 E2 2 when jumpered A2 E3 4 when jumpered Serial port jumpers not jumpered...

Page 98: ...sabled No E5 Disk power termination Yes E6 SCSI bus power termination No TABLE 9 1 535 Mbyte Conner Drive Configuration Jumpers Continued Pin Pair Description Factory Set TP SS PE WP ME DS RS TP A1 A0 A2 Power Data connector connector SCSI address 3 A0 and A1 jumpered Manufacturing header pins Motor enabled Parity disabled ME jumpered PE jumpered ...

Page 99: ...ve Configuration Jumpers Abbreviation Description Factory Set RS Reserved No DS Motor start delay No ME Motor start is enabled at unit s start command Yes WP Write protect disabled No PE Parity disabled Yes SS Reserved No TP Drive does not supply power termination to itself No TP Drive does not supply power termination to the SCSI bus No ...

Page 100: ...lassic X SPARCstation LX Service Manual November 1993 FIGURE 9 7 Jumper Settings for 1 0 Gbyte Drive Part 370 1546 A0 A1 A2 A0 A1 A2 Power Data connector Power and data connectors connector SCSI ID jumpers SCSI device address ...

Page 101: ...ration Jumpers Abbreviation Description Factory Set SS Reserved No DS Delayed start No ME Motor enable Yes WP Write protect No PE Parity enable Yes TP SS PE WP ME DS RS TP A1 A0 A2 Power Data connector connector SCSI ID jumpers SCSI address set to 3 Drive configuration jumpers Manufacturing header pins TP TP TE PE WP ME DS SS Motor enable Parity enable ME jumpered PE jumpered A0 and A1 jumpered no...

Page 102: ...nation power to SCSI bus No TABLE 9 3 1 0 Gbyte Seagate Drive Configuration Jumpers Continued Abbreviation Description Factory Set E5 E4 E3 E2 E1 E6 E7 Power Data connector connector SCSI ID device E0 and E1 jumpered address jumpers SCSI ID address 3 A0 E1 0 or 1 when jumpered A1 E2 2 when jumpered A2 E3 4 when jumpered Serial port pins SCSI power terminator E8 not jumpered Motor Enable E5 jumpere...

Page 103: ...ing screws into the drive screw holes Use the holes that are closest to the corners of the drive Now skip ahead to Step 5 4 If the drive bracket has grommets insert a shoulder screw into each grommet leaving enough clearance for the drive to be lowered into the bracket 5 Lower the hard drive into the bracket and tighten the four screws Note The drive may not sit perfectly flat until it is complete...

Page 104: ...d to fit only one way Caution Carefully align the connector pins with the socket to avoid damaging the pins Do not force the connection Hard drive data cable Hard drive power cable Hard disk drive Disk drive mounting bracket Disk drive screw holes Main logic Keyboard soft power on cable Cable Power supply UNIT TOP power cable management guides If the mounting bracket has no grommets follow step 3 ...

Page 105: ...nector s location The connector is keyed to fit only one way FIGURE 9 11 Main Logic Board This completes the procedure for installing the disk drive 9 2 Disk Drive Bracket The disk drive bracket resides in the top part of the system unit in front of the power supply see FIGURE 9 13 It houses both the diskette drive and the hard disk drive The hard drive may be removed independently of the disk dri...

Page 106: ...t be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the A...

Page 107: ... you loosen the screw until the bracket disengages from the unit top UNIT BOTTOM Main logic board SBus slots SBus card Speaker Power LED assembly Diskette drive data cable optional Main logic power cable Diskette drive Power supply DSIMMs Hard drive data cable Hard drive UNIT TOP VSIMM module option on SPARCstation LX only System Hard drive power cable optional system option fully populated I O bo...

Page 108: ...removed without snagging or cutting the cables b Tilt the bracket up and away from the power supply see FIGURE 9 13 c Lift the bracket out of the system unit and place it on an antistatic mat Hard drive Hard drive Hard disk drive Drive bracket Drive mounting Pull tab Diskette drive Main logic Diskette drive Power supply UNIT TOP data cable power cable screw holes bracket power cable data cable pow...

Page 109: ...the bracket Tilt the disk drive bracket toward the front of the unit Gently lower the bracket into position in front of the power supply see FIGURE 9 15 Note The disk drive bracket must engage a securing ridge at the inside front of the unit top If the bracket is installed incorrectly you will not be able to insert diskettes into the diskette drive 3 Tighten the captive screw Tighten the captive P...

Page 110: ...drive see FIGURE 9 12 c Connect the hard disk data cable and the diskette drive data cable if present to their respective connectors on the main logic board see FIGURE 9 15 d Connect the internal power cable and the keyboard soft power on cable to their respective connectors on the main logic board 5 Refer to Chapter 7 Internal Access to perform the following procedures Detaching the wrist strap C...

Page 111: ...r a grounding strap when handling these drives Attach the strap to your wrist and to the metal casing of the power supply Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness ...

Page 112: ...racket see FIGURE 9 16 3 Remove the diskette drive from the bracket Slide the diskette drive out of the bracket as shown in FIGURE 9 16 and place it on an antistatic mat FIGURE 9 16 Disk Drive Mounting Bracket 4 Detach the diskette drive data cable Detach the data cable from the diskette drive and set it aside for use with the replacement drive Screw holes Diskette drive Diskette drive power cable...

Page 113: ... 16 Use the end of the cable that has no pull tab The connector is keyed so it will fit only one way 4 Install the diskette drive see FIGURE 9 16 a Slide the diskette drive and attached cable into the cavity in the disk drive mounting bracket Make sure the drive s printed circuit board is facing up b Thread the data cable through the opening on top of the drive mounting bracket c Align the four sc...

Page 114: ...9 24 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 115: ...re You Begin Section 10 2 Damage Prevention Section 10 3 Handling System Boards and Assemblies Section 10 4 Main Logic Board Layouts Section 10 5 Identifying Replaceable System Board Components 10 1 Before You Begin Before you begin to replace CRUs make sure you do the following Halt your system Gather the proper tools Disconnect external peripherals if any Open the system unit Attach a wrist stra...

Page 116: ...wer supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from ha...

Page 117: ... Make sure that the power cord connects the system to a grounded electrical outlet The power cord provides a ground path for the system unit Electric shock Make sure that the system power switch is in the standby position before opening the system for service Wrist strap ESD Wear a wrist strap when handling printed circuit boards ESD mat ESD Use the antistatic mat see Chapter 12 Illustrated Parts ...

Page 118: ...Logic Board Layout SPARCclassic SPARCclassic X Systems FIGURE 10 2 and FIGURE 10 3 illustrate the SPARCstation LX main logic boards I O board Hard drive data connector LED speaker AUI PTC SCSI terminator PTC Keyboard Audio power PTC Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 S...

Page 119: ...eyboard Audio power PTC Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 SIMM slot U0401 Bank 1 Bank 2 Bank 3 Bank 1 Bank 2 Bank 3 Video SIMM slot SBus slot 0 SBus slot 1 NVRAM Boot PROM Monitor control connectors used by SBus frame buffer cards mouse PTC edge connector ISDN Jumpers...

Page 120: ... LX board or subassembly make sure that you have the right unit I O board Hard drive data connector LED speaker connector SCSI terminator PTC Keyboard Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 SIMM slot U0401 Bank 1 Bank 2 Bank 3 Bank 1 Bank 2 Bank 3 Video SIMM slot SBus slot...

Page 121: ...al cables Diskette drive data cable Not applicable to SPARCclassic X terminal Hard disk drive data cable Not applicable to SPARCclassic X terminal Note As noted in the part labels shown in FIGURE 10 4 some items are not applicable to the SPARCclassic X terminal TABLE 10 2 Acronyms for Components of the Main Logic Board Acronym Abbreviation Full Expression NVRAM Nonvolatile Random Access Memory PRO...

Page 122: ...ogic board SBus slots SBus card Speaker Power LED assembly Main logic power cable DSIMMs Hard drive data cable UNIT TOP VSIMM module option on SPARCstation LX only System system option fully populated I O board Keyboard soft power on cable Hard drive power cable Diskette drive data cable Not applicable to the SPARCclassic X terminal ...

Page 123: ...ion 11 3 DRAM Single In line Memory Modules DSIMMs Section 11 4 Main Logic Board Section 11 5 Nonvolatile RAM NVRAM Section 11 6 SPARCstation LX ISDN Jumper Settings 11 1 SBus Cards This section describes the procedures for removing and replacing a faulty SBus card If you are adding a new SBus card and not replacing one refer instead to the Desktop SPARC Hardware Owner s Guide and the documentatio...

Page 124: ...ower switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety haz...

Page 125: ... If you will not be installing a replacement SBus card install the filler panel before closing the system unit FIGURE 11 2 Failure to do so can cause cooling problems inside the system unit FIGURE 11 2 SBus Slot Filler Panels SBus card retainer Lift card at front corners Do not use plastic SBus card retainer as a handle SBus slot filler panels ...

Page 126: ... Section 11 1 1 Removing SBus Cards on page 11 1 Make sure you use the wrist strap and antistatic mat Be sure to remember which slot contained the faulty SBus card 2 Read the manual supplied with the replacement SBus card Pay particular attention to the section describing the jumper or switch settings slot requirements and tools needed 3 Remove the replacement card from its antistatic bag Hold the...

Page 127: ...11 4 Do not force the card Caution Do not press down on the SBus card retainer as this can cause it to break Using excessive force to secure the connection may bend or damage the connector pins 7 Refer to the manual supplied with the replacement card for instructions on any additional hardware setup 8 Attach any internal cables leading from the SBus card to the main logic board if applicable 9 Att...

Page 128: ...ower on 12 Refer to the guide for your SBus product to complete any required software installation configuration or additional setup procedures 11 2 Video SIMM VSIMM This section describes the procedures for removing and replacing a faulty Video SIMM The VSIMM is an option on SPARCstation LX systems only Complete installation procedures can be found in Installing SPARCclassic SPARCclassic X SPARCs...

Page 129: ...described in Section 7 3 Attaching the Wrist Strap Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Ver...

Page 130: ...atic mat shiny side up next to the system unit The mat is supplied with the replacement VSIMM 4 Remove the faulty VSIMM Grasp the VSIMM at its top corners and carefully wiggle it free from its connector see FIGURE 11 6 Be careful not to touch any of the components on the VSIMM 5 Place the VSIMM on the antistatic mat VSIMM slot ...

Page 131: ...connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Caution The SIMMs installed in your system must be specifically d...

Page 132: ... to both corners push down the VSIMM until it is firmly seated in its connector 3 Refer to Chapter 7 Internal Access to perform the following procedures Detaching the wrist strap Closing the system unit Reconnecting system components 4 Refer to Chapter 6 Power Off and On to turn the power on FIGURE 11 7 Installing the VSIMM 11 3 DRAM Single In line Memory Modules DSIMMs This section describes the ...

Page 133: ...nk must be identically configured that is they should both contain the same type of DSIMM or else both should be empty FIGURE 11 8 shows a typical DSIMM If you are merely expanding memory and not repairing it refer instead to the document supplied with your memory upgrade Installing SPARCclassic SPARCclassic X SPARCstation LX SIMMs FIGURE 11 8 Typical DSIMM FIGURE 11 9 shows the DSIMM slot locatio...

Page 134: ...MB 4 MB 1 MB 1 MB 4 MB 12 MB 2 MB 4 MB 2 MB 4 MB 12 MB 2 MB 2 MB 2 MB 2 MB 2 MB 2 MB 16 MB 2 MB 2 MB 4 MB 2 MB 2 MB 4 MB 16 MB 4 MB 4 MB 4 MB 4 MB 20 MB 2 MB 4 MB 4 MB 2 MB 4 MB 4 MB 24 MB 4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 32 MB 16 MB 16 MB 36 MB 1 MB 1 MB 16 MB 1 MB 1 MB 16 MB 36 MB 2 MB 16 MB 2 MB 16 MB 40 MB 2 MB 2 MB 16 MB 2 MB 2 MB 16 MB 40 MB 4 MB 16 MB 4 MB 16 MB 44 MB 2 MB 4 MB 16 MB 2 MB 4 MB...

Page 135: ...o the metal casing of the power supply at the rear of the unit top 48 MB 4 MB 4 MB 16 MB 4 MB 4 MB 16 MB 64 MB 16 MB 16 MB 16 MB 16 MB 68 MB 2 MB 16 MB 16 MB 2 MB 16 MB 16 MB 72 MB 4 MB 16 MB 16 MB 4 MB 16 MB 16 MB 96 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB TABLE 11 2 Configuration Matrix for Memory Modules Total Slot Slot Slot Slot Slot Slot Memory U0304 U0301 U0402 U0303 U0302 U0401 16 MB 4 MB 4 ...

Page 136: ...g any other system component the AC power cord should remain connected and poses no safety hazard To remove a DSIMM 1 Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the...

Page 137: ...y need to remove adjacent DSIMMs first Keep track of which DSIMMs are installed in which slots If you are removing a defective DSIMM take care not to get it mixed up with the other DSIMMs FIGURE 11 10 Removing a DSIMM 11 3 3 Replacing a DSIMM The procedure for replacing a DSIMM is the same regardless of the type of SIMM 2 3 2 1 ...

Page 138: ...use the wrist strap and antistatic mat For any DSIMM you remove be sure to note its original slot 2 Remove the replacement DSIMM from its protective packaging and place it on the antistatic mat 3 Determine where to install the new DSIMM and any others you may have removed The replacement DSIMM should go where the faulty DSIMM was located Any other DSIMMs you removed should go in the slots where th...

Page 139: ...nnecting system components 6 Refer to Chapter 6 Power Off and On to turn the power on Caution When you are finished installing parts inside the system unit be sure to close the system unit before turning on the power It is not safe to operate the system unit while it is open See Section 7 4 Closing the System Unit on page 7 4 for instructions 11 4 Main Logic Board This section explains how to remo...

Page 140: ...ch the wrist strap to the metal casing of the power supply at the rear of the unit top Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic boar...

Page 141: ...inator PTC Keyboard Audio power PTC Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 SIMM slot U0401 Bank 1 Bank 2 Bank 3 Bank 1 Bank 2 Bank 3 SBus slot 0 SBus slot 1 NVRAM Boot PROM Monitor control connector used by SBus frame buffer cards mouse PTC edge connector connector ...

Page 142: ...I terminator PTC Keyboard Audio power PTC Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 SIMM slot U0401 Bank 1 Bank 2 Bank 3 Bank 1 Bank 2 Bank 3 Video SIMM slot SBus slot 0 SBus slot 1 NVRAM Boot PROM Monitor control connectors used by SBus frame buffer cards mouse PTC edge conn...

Page 143: ...he main logic board I O board Hard drive data connector LED speaker connector Keyboard soft power on connector Diskette drive data connector Power supply connector SIMM slot U0304 SIMM slot U0301 SIMM slot U0402 SIMM slot U0303 SIMM slot U0302 SIMM slot U0401 Bank 1 Bank 2 Bank 3 Bank 1 Bank 2 Bank 3 Video SIMM slot SBus slot 0 SBus slot 1 NVRAM Boot PROM edge connector ISDN Jumpers SCSI terminato...

Page 144: ...n logic board to complete the ground c Attach a terminal to serial port A on the system unit For details see the Desktop SPARC Hardware Owner s Guide A terminal enables you to view the output of the POST results as they are run Alternatively you can set up a tip connection to another workstation see Section 3 4 1 Setting Up a tip Connection to Another Workstation on page 3 5 for details d Disconne...

Page 145: ...th a hard drive 12V 10 2 to 13 8 without a hard drive If the voltages are correct you can rule out a defective power supply 1 Reconnect the cables and SBus cards one at a time and measure the voltages each time In this way you can determine whether one of the system components is holding down a power supply voltage 2 Close the system unit using the procedure in Section 7 4 Closing the System Unit ...

Page 146: ...ou replaced the main logic board or a DSIMM return to step 3 of this procedure 4 If you still have not identified the problem go to the next step Otherwise skip ahead to step 7 5 Run the SunDiagnostic Executive with the cache disabled The SunDiagnostic Executive is an independent operating system It runs exhaustive subsystem tests independent of your system s normal operating system See the SunDia...

Page 147: ...to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service th...

Page 148: ...able from their connectors at the front of the main logic board 7 Remove the NVRAM chip See Section 11 5 Nonvolatile RAM NVRAM on page 11 31 for details Place the NVRAM chip on the antistatic mat Save the chip for installation on the replacement main logic board 8 Remove the main logic board a Pull the MLB main logic board extractor lever toward the front of the system unit to disconnect the main ...

Page 149: ...FIGURE 11 15 Extracting the Main Logic Board FIGURE 11 16 Raising the Speaker LED Assembly System I O board Main logic board Main logic board Speaker power LED assembly extractor lever Squeeze the two levers at the base of the assembly and slide the assembly up ...

Page 150: ...PARCclassic X SPARCstation LX Service Manual November 1993 FIGURE 11 17 Removing and Replacing the Main Logic Board System I O board Main logic board Main logic board extractor lever Speaker power LED assembly UNIT BOTTOM ...

Page 151: ...1 3 3 Replacing a DSIMM on page 11 15 for installation details 4 Install the optional VSIMM if applicable See Section 11 2 2 Replacing the VSIMM on page 11 9 for installation details 5 Install the new main logic board a Grasp the board by the SBus connectors with both hands and guide the main logic board extractor lever through the rectangular cutout in the main logic board see FIGURE 11 17 Avoid ...

Page 152: ...nect the 3 pin connector from the power supply harness to the keyboard soft power on connector on the main logic board c Connect the LED speaker cable to its mating connector on the main logic board d Connect the diskette drive and hard disk drive data cables to their connectors at the front of the main logic board 7 Reinstall any SBus cards if applicable See Section 11 1 2 Replacing SBus Cards on...

Page 153: ...n and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit detach all peripherals and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path ...

Page 154: ...her system component the AC power cord should remain connected and poses no safety hazard 2 Locate the NVRAM chip carrier on the main logic board See FIGURE 11 19 3 Hold the NVRAM chip carrier on both ends and lift the chip straight up Gently wiggle the carrier as necessary see FIGURE 11 20 4 Place it on the antistatic mat FIGURE 11 19 Locating the NVRAM FIGURE 11 20 Removing the NVRAM ...

Page 155: ...7 Internal Access to perform the following procedures Detaching the wrist strap Closing the system unit Reconnecting system components 5 Refer to Chapter 6 Power Off and On to turn the power on 11 6 SPARCstation LX ISDN Jumper Settings The SPARCstation LX is configured for ISDN support Shown in FIGURE 11 21 are the default jumper settings for the main logic board addresses J1801 and J1802 respecti...

Page 156: ... LX ISDN Jumper Settings Address Jumper Pins Setting Description J1801 1 2 Jumpered ISDN termination is on the system board default 2 3 Jumpered ISDN termination is assumed set at the ISDN jack in the wall 1 2 3 Not jumpered ISDN termination is assumed set at the ISDN jack in the wall J1802 1 2 Jumpered ISDN termination is on the system board default 2 3 Jumpered ISDN termination is assumed set at...

Page 157: ...ms and a list of customer replaceable units and their part numbers Section 12 1 Illustrations of Selected CRUs Section 12 2 Replacement Part List Note Remember that diskette drive and hard drive parts do not apply to the SPARCclassic X terminal 12 1 Illustrations of Selected CRUs FIGURE 12 1 through FIGURE 12 3 show exploded view illustrations of the SPARCclassic SPARCstation LX system unit ...

Page 158: ...E 12 1 Exploded View of the Unit Top Hard drive Hard drive Diskette drive Drive mounting Hard disk drive Diskette drive Power supply Main logic Diskette drive Hard drive Keyboard soft data cable power connect data cable power cable power cable power cable power on cable hidden bracket ...

Page 159: ...Exploded View of the Unit Bottom Security loop UNIT BOTTOM System I O board Internal speaker and Hard drive data cable Diskette drive data cable Keyboard soft NVRAM TOD Main logic board power LED assembly Main logic power cable power on cable extractor lever ...

Page 160: ... 12 1 provides the part numbers for customer replaceable units TABLE 12 2 provides part numbers for miscellaneous items and TABLE 12 3 part numbers for related documentation Screw holes Diskette drive Diskette drive power cable Diskette drive data cable Pull tab Screw holes Cable Captive screw Drive mounting bracket management guides Drive select switch hidden from view ...

Page 161: ...pply 300 1101 7 System I O Board 501 2269 8 Internal Speaker Power LED Assembly 540 2233 9 Main Logic Board 0 Mbyte SPARCclassic 501 2262 10 Main Logic Board 0 Mbyte SPARCstation LX 501 2474 11 Main Logic Board 4 Mbyte SPARCclassic X 501 2079 12 Main Logic Board 8 Mbyte SPARCclassic X 501 2313 13 Upgrade SPARCclassic X 4 Mbyte to Classic 16 Mbyte 556 1774 14 Upgrade SPARCclassic X 8 Mbyte to Class...

Page 162: ... German Type 5 Keyboard 320 1076 40 Italian Type 5 Keyboard 320 1077 41 Holland Dutch Type 5 Keyboard 320 1078 42 Norwegian Type 5 Keyboard 320 1079 43 Portuguese Type 5 Keyboard 320 1080 44 Spanish Type 5 Keyboard 320 1081 45 Swedish French Type 5 Keyboard 320 1082 46 Swiss French Type 5 Keyboard 320 1083 47 Swiss German Type 5 Keyboard 320 1084 48 U K Type 5 Keyboard 320 1085 49 Korean Type 5 Ke...

Page 163: ...dware Documentation Item Description Sun Part No 1 Desktop Storage Pack Installation Operation Manual 800 6316 2 Desktop Storage Module Installation User s Guide 800 7235 3 Desktop SPARC Hardware Owner s Guide 801 2175 4 Desktop SPARC Hardware Product Notes 801 2179 5 Sundiag User s Guide 801 5319 6 Sundiag User s Guide Addendum for SMCC Hardware 801 5497 7 Open Boot Command Reference 800 6076 8 O...

Page 164: ...1993 12 SPARCclassic X Upgrade Guide 801 4721 13 Installing SPARCclassic SPARCclassic X SPARCstation LX SIMMs 801 2211 14 Sun ISDN BRI SBIH Hardware Configuration Guide 800 6863 TABLE 12 3 Part Number List Related Hardware Documentation Continued Item Description Sun Part No ...

Page 165: ...rive Section A 1 Input Power Requirements Section A 2 Environmental Requirements Section A 3 Physical Specifications Section A 4 Regulatory Compliance A 1 Input Power Requirements TABLE A 1 lists the input power requirements for the system unit TABLE A 1 Input Power Requirements and Power Dissipation Parameter Specification Nominal Frequencies 50 Hz or 60 Hz nominal Nominal Voltage Range 100 120 V...

Page 166: ... TABLE A 2 Environmental Requirements Operating Environment Temperature 10 to 40 C 50 to 104 F Humidity 20 to 80 relative noncondensing at 40 C 104 F Wet Bulb 25 C 77 F maximum Altitude 0 to 3048 m 0 to 10 000 ft Vibration 5 22 Hz 0 01 inches p p 22 500 Hz 0 25 g p p Shock 5 g pk 10 msec 1 2 sine wave Non Operating Environment Temperature 20 to 75 C 4 to 167 F Wet Bulb 46 C 115 F maximum Vibration...

Page 167: ...s Component Height inches mm Width inches mm Depth inches mm Net Weight lbs kg System Unit 4 6 118 9 6 245 10 4 264 11 0 4 95 Keyboard Type 5 1 7 44 20 1 510 7 2 182 3 5 1 6 Mouse 2 0 50 4 0 100 3 0 80 0 3 0 14 TABLE A 4 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 950 ...

Page 168: ...A 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 ...

Page 169: ...tion B 3 ISDN Terminal Endpoint Connector Section B 4 ISDN Network Termination Connector Section B 5 Keyboard Mouse Connector Section B 6 SCSI Connector External Section B 7 Serial Connector Section B 8 Parallel Connector Section B 9 13W3 Video Connector Section B 10 Audio Ports and Audio Module Section B 12 SCSI Connector Internal Section B 13 Diskette Drive Connector Internal Section B 14 SBus C...

Page 170: ...nnector TABLE B 1 Pinout for Attachment Unit Interface AUI Connector Pin Description Pin Description 1 AUI_DO_L 14 AUI_DO 2 AUI_DI 15 AUI_DI_L 3 AUI_CI_L 16 AUI_CI 4 ENET_PWR 17 GND 5 EMCTL 18 RESET_SENSE_L 6 CHIDX 19 CHIDR 7 CHI_CLK 20 CHIDFS 8 CODFS 21 CODCK 9 N C 22 N C 10 Vcc 23 GND 11 Vcc 24 GND 12 Codec_PWR_DN_L 25 MIDI_OUT 13 MIDI_IN 26 MIDI_IN_L 1 13 26 14 ...

Page 171: ...al Endpoint Connector TABLE B 2 Pinout for Twisted Pair Ethernet Connector Pin Description Pin Description 1 Transmit Data 5 N C 2 Transmit Data 6 Receive Data 3 Receive Data 7 N C 4 N C 8 N C TABLE B 3 Pinout for ISDN Terminal Endpoint Connector Pin Description Pin Description 1 PS1 5 Receive Data 2 PS1 6 Transmit Data 3 Transmit Data 7 PS2 4 Receive Data 8 PS2 1 8 1 8 ...

Page 172: ...twork Termination Connector FIGURE B 4 ISDN Network Termination Connector Note The 5 Volt line is fuse protected TABLE B 4 Pinout for ISDN Network Termination Connector Pin Description Pin Description 1 PS1 5 Transmit Data 2 PS1 6 Receive Data 3 Receive Data 7 PS2 4 Transmit Data 8 PS2 1 8 ...

Page 173: ...board Mouse Connector Note All signals are standard TTL levels The 5V supply is fuse protected TABLE B 5 Pinout for Keyboard Mouse Connector Pin Description Pin Description 1 Ground 5 Keyboard Out 2 Ground 6 Keyboard In 3 5 Vdc 7 KBD_PWR_ON_L 4 Mouse In 8 5 Vdc 1 2 3 4 5 6 7 8 ...

Page 174: ...n Pin Description 1 Ground 26 sd0 2 Ground 27 sd1 3 Ground 28 sd2 4 Ground 29 sd3 5 Ground 30 sd4 6 Ground 31 sd5 7 Ground 32 sd6 8 Ground 33 sd7 9 Ground 34 sdp 10 Ground 35 Ground 11 Ground 36 Ground 12 N C 37 N C 13 N C 38 TermPWR 14 N C 39 N C 15 Ground 40 Ground 16 Ground 41 atn 17 Ground 42 Ground 18 Ground 43 bsy 19 Ground 44 ack 20 Ground 45 rst 21 Ground 46 msg 22 Ground 47 sel 50 25 26 1...

Page 175: ... Transmit Clock DCE source 3 A Receive Data 16 B Receive Data 4 A Request to Send 17 A Receive Clock 5 A Clear to Send 18 B Transmit Clock DCE source 6 A Data Set Ready 19 B Request to Send 7 Signal Ground 20 A Data Terminal Ready 8 A Carrier Detect 21 N C 9 N C 22 N C 10 N C 23 N C 11 B Data Terminal Ready 24 A Transmit Clock DTE source 12 B Carrier Detect 25 B Transmit Clock DTE source 13 B Clea...

Page 176: ...nnector TABLE B 8 Pinout for Parallel Connector Pin Description Pin Description 1 Strobe 14 AutoFxDt 2 Data 0 LSB 15 Error 3 Data 1 16 Init 4 Data 2 17 SlctIn 5 Data 3 18 Ground 6 Data 4 19 Ground 7 Data 5 20 Ground 8 Data 6 21 Ground 9 Data 7 22 Ground 10 Ack 23 Ground 11 Busy 24 Ground 12 PE 25 Ground 13 Slct 1 13 25 14 ...

Page 177: ... X SPARCstation LX system board on the SPARCclassic X terminal the ports are covered and inactive Section B 11 Signals for the Audio Ports gives the signals for the audio ports TABLE B 9 Pinout for 13W3 Video Connector Pin Description Pin Description A1 Video Red 5 Composite Sync A2 Video Green 6 Ground A3 Video Blue 7 Ground 1 Ground 8 Sense 1 2 Ground 9 Sense 0 3 Sense 2 10 Ground 4 Ground A1 A2...

Page 178: ...dio Line Out Connector FIGURE B 11 Audio Line out Connector This connector is used to connect the system audio output to a stereophonic amplifier and external loudspeakers B 11 2 Audio Line In Connector FIGURE B 12 Audio Line in Connector TABLE B 10 Audio Ports Line Out Line In Left Channel Left Channel Right Channel Right Channel Return Return ...

Page 179: ... TABLE B 11 Pinout for Internal SCSI Connector Pin Description Pin Description 1 Ground 26 5 VDC 2 sd0 27 N C 3 Ground 28 N C 4 sd1 29 Ground 5 Ground 30 Ground 6 sd2 31 Ground 7 Ground 32 atn 8 sd3 33 Ground 9 Ground 34 N C 10 sd4 35 Ground 11 Ground 36 bsy 12 sd5 37 Ground 13 Ground 38 ack 14 sd6 39 Ground 15 Ground 40 rst 16 sd7 41 Ground 17 Ground 42 msg 18 sdp 43 Ground 19 Ground 44 sel 20 Gr...

Page 180: ... B 12 Pinout for Diskette Drive Connector Pin Description Pin Description 1 eject 18 direction 2 N C 19 Ground 3 Ground 20 step 4 N C 21 Ground 5 Ground 22 write data 6 N C 23 Ground 7 Ground 24 write gate 8 Index 25 Ground 9 Ground 26 track 0 10 drive select 0 27 Ground 11 Ground 28 write protect 12 N C 29 Ground 13 Ground 30 read data TABLE B 11 Pinout for Internal SCSI Connector Continued Pin D...

Page 181: ...4 sb_irq1 28 sb_irq7 52 Ground 76 Ground 5 sb_d 0 29 sb_a 0 53 sb_d 1 77 sb_a 1 6 sb_d 2 30 sb_a 2 54 sb_d 3 78 sb_a 3 7 sb_d 4 31 sb_a 4 55 sb_d 5 79 sb_a 5 8 sb_irq2 32 sb_merr 56 5 VDC 80 5 VDC 9 sb_d 6 33 sb_a 6 57 sb_d 7 81 sb_a 7 10 sb_d 8 34 sb_a 8 58 sb_d 9 82 sb_a 9 11 sb_d 10 35 sb_a 10 59 sb_d 11 83 sb_a 11 12 sb_irq3 36 sb_err 60 Ground 84 Ground 13 sb_d 12 37 sb_pa 12 61 sb_d 13 85 sb...

Page 182: ...irq5 44 sb_ack32 68 Ground 92 Ground 21 sb_d 25 45 sb_pa 24 69 sb_d 24 93 sb_pa 25 22 sb_d 27 46 sb_pa 26 70 sb_d 26 94 sb_pa 27 23 sb_d 29 47 N C 71 sb_d 28 95 sb_reset 24 sb_irq6 48 12 VDC 72 5 VDC 96 12 VDC TABLE B 14 Pinout for Power Connector Pin Description Pin Description 1 5 Vdc 7 5 Vdc 2 5 Vdc 8 5 Vdc 3 Ground 9 Ground 4 Ground 10 Ground 5 12 Vdc 11 12 Vdc 6 POK 12 12 Vdc TABLE B 13 Pinou...

Page 183: ...to the Monitor Prompt You have access to a number of additional tests in the boot PROM called On Board Diagnostics To invoke these tests you must enter the Forth Toolkit Caution To run the On Board Diagnostics you must halt the system in an orderly manner When the operating system or any other standalone program has already booted do not press Stop a to halt the system Abruptly aborting program ex...

Page 184: ...ress Return The example above uses 5 minutes for a warning period to other system users Use appropriately chosen switch settings to inform other system users of your intentions see shutdown 1 Continue with Step 4 b Type usr sbin init 0 and press Return For example to halt the system immediately type See the documentation supplied with your operating system for instructions on how to halt it The sy...

Page 185: ...ethod for specified device Examples test memory test memory test iommu sbus ledma le test net test floppy test floppy disk drive test net test net device specifier is an alias test scsi test scsi device specifier is an alias watch clock show ticks of real time clock watch net monitor broadcast packets using auto selected interface watch aui monitor broadcast packets using AUI interface watch tpe m...

Page 186: ...d and displays the result as a seconds counter The counter should count from 0 to 59 repeatedly until you interrupt it by pressing any key on the keyboard The following screen gives you an example of a watch clock test C 1 4 Watch net Watch aui Watch tpe and Watch net all These tests monitor broadcast Ethernet packets on the Ethernet cable s connected to the system Good packets received by the sys...

Page 187: ...s this automatic selection to take place You may see these messages You may also control the selection of Ethernet interfaces to monitor by using specific commands Use watch tpe to monitor the 10BaseT TPE connection or watch aui to monitor the 10Base5 thicknet connection ok watch net Internal loopback test succeeded External loopback test Auto selecting Ethernet cable I F Trying AUI Received packe...

Page 188: ...rnet interface it finds in the system For example ok watch tpe 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 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 pac...

Page 189: ... followed by the SCSI device identification data For example C 1 6 Test memory All of the system 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 ok probe scsi Tar...

Page 190: ...ze of memory in megabytes installed in the system When the test memory diagnostic is running the number of megabytes being tested is displayed and counted down to zero during the test See the Open Boot Command Reference for a detailed description and step by step instructions for the available on board diagnostic tests C 2 Returning to the Monitor Prompt If you need to return to the monitor prompt...

Page 191: ...Self Test POST and On Board Diagnostics cables Wires or bundles of wires configured with connectors at each end and used to connect two or more hardware devices cache A mechanism for accelerating a microprocessor s performance A cache is a small fast memory between the microprocessor and main memory It quickens a microprocessor s access time to main memory It also stores the most recently used inf...

Page 192: ... outer jacket of the diskette is made of firm plastic that measures 3 5 inches 88 9 millimeters across diskette drive A device that reads and writes diskettes The diskette drive access is located on the front panel of the system units A diskette drive is optional on both SPARCclassic and SPARCstation LX systems DRAM Dynamic Random Access Memory DSIMM DRAM Single In line Memory Module A small print...

Page 193: ...d in the boot PROM is a series of rudimentary tests designed to verify that a viable boot path exists for loading more extensive diagnostic software such as the Diagnostic Executive PTC Positive Temperature Coefficient A self healing device that replaces a fuse After an error occurs the PTC resets printed circuit board Any board with electronic wiring etched on it PROM Programmable Read Only Memor...

Page 194: ...e ports on the back panel of the SPARCstation system unit It is not synonymous with the term monitor TOD Time of Day clock VRAM Video Random Access Memory VSIMM VRAM Single In line Memory Module A small printed circuit card that contains video random access memory VRAM chips wrist strap A device that provides grounding for static electricity between your body and the system unit s chassis Electric...

Page 195: ...board See MLB See CPU board closing system unit 7 4 color frame buffer board 1 6 connectors audio ports B 9 external audio line in B 11 audio line out B 10 internal diskette drive pinout B 12 power pinout B 14 SBus pinout B 13 parallel pinout B 8 SCSI internal B 11 serial pinout B 7 type 13W3 video pinout B 9 CPU board removing 11 24 replacing 11 29 test points 11 18 troubleshooting 11 21 CRU cust...

Page 196: ...access memory DRAM See DRAM dynamic single in line memory module DSIMM See DSIMM E Electrical Static Discharge ESD See ESD mat environmental requirements A 2 error hard disk drive 4 6 read write or parity 4 2 4 6 ESD mat 5 4 Ethernet board 1 6 external devices 1 1 F Forth Toolkit 2 7 frame buffer board 1 6 G graphics I O devices 1 7 grounding strap 7 4 GX graphics accelerator board 1 6 H halting o...

Page 197: ...2 8 net aui 2 8 net tpe 2 8 screen 2 8 scsi 2 8 tape0 2 9 ttya 2 9 ttyb 2 9 opening system unit 7 2 operating system halting 6 3 options 1 7 P part numbers listing 12 4 related documentation 12 7 physical specifications A 3 pin assignment B 1 audio ports B 9 board power supply connector 4 4 diskette drive connector B 12 parallel connector B 8 power supply internal B 14 SBus connector internal B 13...

Page 198: ...ystem components 1 1 system I O board location 8 7 removing 8 7 system overviews SPARCclassic 1 1 SPARCclassic X 1 1 SPARCstation LX 1 1 system power supply location 8 1 T test C 3 MLB 4 5 power supply 4 3 test points 11 18 test device path C 3 test all C 3 C 4 test memory C 7 thick Ethernet C 5 tip 3 5 tip window 3 5 tools needed to replace CRUs 5 3 troubleshooting 2 1 turning off power 6 2 6 4 t...

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Sun Microsystems SPARC classic X, Service Manual

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