DEC DECpc 433 Service Manual Download Page 128

Summary of Contents for DECpc 433

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Page 2: ...DECpc 433 Workstation Service Guide Order Number ER PCW10 SV 001 digital equipment corporation maynard massachusetts...

Page 3: ...re by the U S Govemml nt is subject to restrictions as set forth in subparagraph c 1 ii of the Rights in Technical Data and Computer Software clause at DFARS 252 227 7013 DECpc 433 Workstation Service...

Page 4: ...t to Part 15 of the FCC Rules These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment This equipment generate...

Page 5: ...nic Office Machines aimed at preventing radio interference in commercial and or industrial areas Consequently when used in a residential area or nan adjacent area thereto radio interference may be cau...

Page 6: ...to Importer We hereby certify that th DECpc 433 Workstation is in compliance with vfg 1046 and is RF1 suppressed The marketing and sale of the equipment was reportPd to the German Postal Service The...

Page 7: ...3 Workstation in Ubereinstimmung mit den Bestimmungen der vfg 1046 funk entstOrt ist Der Deutschen Bundespost wurde das im erkehrbringen diesPs Gerates angezeigt und die Berechtigung zur Uherpriifung...

Page 8: ...1 4 Battery 1 5 SCSI Expansion Box 1 5 Monitors 1 5 Keyboard 1 6 Muuse 1 6 2 Troubleshooting Introduction 2 1 Special Tools 2 1 POST 2 3 System Board Hardware Tests 2 3 Peripheral Hardware Tests 2 4...

Page 9: ...roller 3 25 External Cache 3 29 Power Supply 3 31 SIMMS 3 34 System Board 3 37 4 SCSI Expansion Box FRU Replacement Introduction 4 1 SCSI Expansion Box FRUs 4 1 Before You Begin 4 2 Cover 4 3 Removing...

Page 10: ...or B 5 SCSI Connector B 6 C ROM Based Setup Introduction C 1 Running Setup C 2 Changing Configuration Settings C 5 Configwation Setting Descriptions C 6 Time C 6 Date C 6 Language C 6 Diskette C 6 IDE...

Page 11: ...Contents LAN Boot C 8 LAN Timeout C 8 Shadow C 9 Cache C 9 Password C 9 System Information Menu C 9 Exiting Setup C 9 D Device Mapping Introduction 0 1 iv DECpc 433 Workstation Service Manual...

Page 12: ...he Intelligent Graphics Controller 3 26 Installing th Intelligent Graphics Controller 3 28 Removing and Repiacing the External Cache 3 30 Removing the Power Supply 3 32 Replacing the Power Supply 3 33...

Page 13: ...shooting 2 19 2 9 SCSI Expansion Box Troubleshooting 2 20 3 1 System Box FRUs 3 1 4 1 SCSI Expansion Box FRUs 4 1 A 1 Power Reqt irements A 1 A 2 Current Requirements A 2 B 1 Serial Port Pinouts J2A J...

Page 14: ...red in separate service documentation Audience Th s guide is written specifically for an authorized repair technician It also assumes a familiarity with the general terminology associated with persona...

Page 15: ...guide information Notational Conventions Notational conventions used throughout this guide include H Kb KB Mb viii In connector pinout listings the asterisk indicates an active low signal for example...

Page 16: ...able or to lend emphasis in textual descriptions File names p th names and directories are also italicized Three kinds of special notices are used throughout this guide to emphasize specific inform ti...

Page 17: ...l Equipment Corporation P O Box CS2008 Nashua NH 03061 Related Documentation The following documents are available as supplements to the infonnation provided in this service guide Document Part Number...

Page 18: ...uments with part numbers beginning with AA from Digital Equipment Corporation Digital Drive Westminster MA 01473 0471 Attn Order Administration Digital self maintenance customers can order documents w...

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Page 20: ...es the number of service actions that can be done in the fkld In general service actions are removing and replacing field replaceable units FRUs The remainder of this chapter briefly describes the FRU...

Page 21: ...System Description I Ot 1 00596 Figure 1 1 DECpc 433 Workstation 1 2 DECpc 433 Workstation Service Guide...

Page 22: ...r 1 MB x 9 or 4 MB x 9 SIMMs can be installed in each socket Both SIMM sizes can be used at the same time however SIMM types w thin a bank must be identical The system also requires SIMMs having an ac...

Page 23: ...IDE hard disk drive can be installed 2 5 lnch IDE Disk Drive The 2 5 inch IDE hard disk drive is optional Intelligent Graphics Controller The intelligent graphics controller supports both m01 ochrome...

Page 24: ...eripheral device bays that accept 5 2 5 inch peripheral devices and one 3 5 inch peripheral bay that accepts 3 5 inch peripheral devices The internal supply provides 63 Watts of power Monitors The DEC...

Page 25: ...1280 x 1024 66Hz VRT16 17inch Color 1280 x 1024 66Hz ISMt Color 1280 x 1024 60Hz t Industry Standard Monitor ISM represents most common 1280 x 1024 monitors Mitsubishi Model 6905 NEC 50 etc Keyboard I...

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Page 27: ...llowing sections Specal tools Power on Self Test POS1 lnitia troubleshooting System box troubleshooting Disk drives Monitor SCSI expansion box Special Tools A standard field service tool kit and the s...

Page 28: ...n serial ports and I 25 pin parallel ports MS DOS Supplemental PCWXQ XA This software kit Kit contains MS DOS SCSI device drivers base video drivers and graphics application drivers needed for the DEC...

Page 29: ...ess from the lowest level of hardware to the initialization of external peripherals e g disk drives keyboard monitor etc There are two types ot POST tests system board hardware and peripheral harU war...

Page 30: ...M matches the hardwart present Then the procedures continue to test and initialize other peripheral hardware Atest failure generally results in an error message on the monitor screen The following lis...

Page 31: ...o not enter Setup the system attempts to boot the operating system in about 10 seconds When POST completes a message similar to the following appears Phoenix 80486 ROM BIOS PLUS Version 1 10 31 POF Co...

Page 32: ...initialized POST displays an error message on the monitor screen and beeps the system board speaker twice Uan error occurs before the monitor is initialized a beep code sounds refer to Beep Code lists...

Page 33: ...Keyboard stuck Check the keyboard key connection Look for Keyboard stuck key Replace controller keyboard Keyboard clock line Keyboard data line Keyboard failure 170 0041 Pointing device Check mouse fa...

Page 34: ...ace hard disk failure 080 0016 Hard diskO Check all connections failure Replace hard disk 070 43 No SCSI BIOS Check all SCSI found at xxxx connections Replace system board 215 Target 0 disk Non standa...

Page 35: ...r SCSI Expansion Box Installation Guide 211 Target 0 target SCSI hard disk drive connected but failure Replace SCSI has a fault drive 210 Target 0 target SCSI expansion box not not connected connected...

Page 36: ...failure 84 81 74 73 71 86 LAN 1 0 failure Replace system board 88 LAN inte Tl pt Replace system board failure 72 LAN mouse Replace system board interrupt failure 050 0019 T me of day not Run Setup an...

Page 37: ...he system to attempt a boot For example if the speaker emits a 2 1 4 beep code a burst of two beeps a single beep and a burst of four beeps bit three of the first 64 KB of DRAM failed its test Table 2...

Page 38: ...rification failure 08H 1 3 3 1st 64 KB DRAM chip or data line failure OAH 1 3 4 1st 64 KB DRAM odd even logic failure OBH 1 4 1 1st 64 KB DRAM address line failure OCH 1 4 2 lst 64 KB DRAM parity test...

Page 39: ...1CH 2 4 2 Bit D 1st 64 KB DRAM failure 1DH 2 4 3 Bit E 1st 64 KB DFAi 1 failure 1EH 2 4 4 Bit F 1st 64 KB DRAM failure iFH 3 1 1 Slave DMA register failure 20H 3 1 2 Master DMA register ilure 21H 3 1...

Page 40: ...1 6 Xilinx Xilinx components failed programming 2 1 Program freq SC22318 failed to program synth a R W test performs 2 2 BT459 RAMDAC Register R W test failed 2 3 GSPPOST GSP self test failed to time...

Page 41: ...wer on Self Test for a listing of POST messages and beep codes Take corrective action 5 Seek assistance Contact your system administrator or network coordinator for LAN related problems 6 Seek assista...

Page 42: ...then tum it back on again No power at the wall Use another wall outlet outlet Power is on but there Video select switch is Check video select is no monitor disolav th m _ e wrong pos1Lmn svvitch posit...

Page 43: ...not Format the IDE hard properly formatted or disk drive or correctly the requested partition partition the IDE hard I does not exist disk drive using the operating system IDE hard disk drive R1 fer...

Page 44: ...2 7 Disk Drive Trr ableshooling Problem Possible Cause Action IDE hard disk drive Incorrect jumper Refer to the supplied cannot read or write settings vendor documentation information IDE hard disk dr...

Page 45: ...heck the video switch wrong position position Configuration error Run Setup Screen displays Video select switch is Check video switch partially highlighted in the wrong position position characters Di...

Page 46: ...tum it back on again SCSI expansion box Tum off the system power cord is not box plug in the SCSI plugged into the expansion box and system box then tum the system box back on No power at the wall Use...

Page 47: ...ad the operating system SCSI hard disk drive Refer to the device jumpers incorrect installation kit instructions SCSI ID conflicts Refer to the device installation kit instructions on setting SCSIIO s...

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Page 49: ...r FRU DigitalPN Top cover plastic 74 43364 01 Front bezel plastic 74 43363 01 Bottom cover plastic 74 43361 01 3 5 filler panel plastic 74 43362 01 Stand off metal 74 43545 01 Chassis base metal 74 43...

Page 50: ...d disk drive 105 MB 3 5 inch PCWXR BB IDE hard disk drive 40 MB 2 5 inc h PC TXR CA External cache module 64 KB PCWXM M External cache module 128 KB PCWXM AB Ribbon cable IDE 40 pin to 40 pin 17 03151...

Page 51: ...ectrical shock Failure to disconnect the source of power before opening the covers can result in personal injury CAUTION Equipment damage Electrostatic discharge ESD can damage disk drives other penph...

Page 52: ...Tag and disconnect all cables connected to external devices 4 Disconnect all system box power cords 5 Unlock the system box outside cover 6 Locate the two locking tabs below the outside cover lock Pus...

Page 53: ...System Box FRU Replacement Locking Tab Locking Tab Figure 3 1 Removing the System Box Cover DECpc 433 Workstation Service Guide 3 5...

Page 54: ...the safety loop fits between the power supply and the rear panel until it engages the locking tabs see Figure 3 3 4 Push down on the outside cover until you hear the locking tabs snap into place 5 Pus...

Page 55: ...System Box FRU Replacement OM 00668 3 Figure 3 2 Replacing the System Box Cover DECpc 4 33 Workstation Service Guide 3 7...

Page 56: ...System Box FRU Replacement OM 00701 Figure 3 3 Power Cord Safety Loop Location DECpc 433 Workstation Service Guide...

Page 57: ...g 1 Remove the system box cover 2 Remove the five screws that secure the chassis inner cover to the intelligent graphics controller 3 Lift the locking tab and then pull the inner cover toward the powe...

Page 58: ...System Box FRU Replacement OM 00669 2 Figure 3 4 Removing the Chassis Inner Cover 3 10 DECpc 433 Workstation Service Guide...

Page 59: ...inner cover over the front and back locking tab openings and then slide the cover away from the power supply to 1 1ate locking tabs 2 Secure the chassis inner cover to the intelligent graphics contro...

Page 60: ...System Box FRU Replacement Locking Tab OM 00669 3 figure 3 5 Replacing the Inner Cover 3 U DECpc 433 Workstation Service Guide...

Page 61: ...ystem box outside cover 2 Remove the chassis inner cover 3 Tag and disconnect the interface cable to the 2 5 inch hard disk drive Note pin I locations and the red cabie stripe location see Figure 3 6...

Page 62: ...System Box FRU Replacement Mounting Post Red Wire OM 00721 3 Figure 3 6 Removing the 2 5 Inch Hard Disk Drive 3 14 DECpc 433 Workstation Service Guide...

Page 63: ...ement 5 Remove the mounting tray screws and then remove the 2 5 inch hard disk drive Figure 3 7 011 4 00720 Figure 3 7 Removing the 2 5 Inch Hard Disk Drive From the Mounting Tray DECpc 433 Workstatio...

Page 64: ...are correctly positioned Figure 3 6 3 Press the mounting tray into its seated position 4 Connect the interface cable Make sure pin 1 and the red cable stripe are in the position noted during removal f...

Page 65: ...g and disconnect all cables to the mass storage device Note the pin I location and the red cable stripe location Figure 3 8 Power Connector Figure 3 S Fluppy Disk Drive Re u Connections DECpc 433 Work...

Page 66: ...RU Replacement 5 Lift up on the disk drive mounting tray and remove it from the chassis Figure 3 9 Lockins Tabs OM 0067 3 Figure 3 9 Removing a 3 5 lnch Mass Storage Device 3 18 DECpc 43 Wo station Se...

Page 67: ...ement 6 Remove the mounting tray screws and then remove the mass storage device see Figure 3 10 Figure 3 10 Removing a 3 5 lnch Mass Storage Device From a Mounting Tray DECpc 433 Workstation Service G...

Page 68: ...rive ID switch to 1 see Figure 3 11 Figure 3 11 SeUing the Floppy Disk ID Select Switch 2 Attach the mass storage device to the mounting tray see Figure 3 10 3 Position the mass storage device mountin...

Page 69: ...ion noted during removal See Figure 3 8 to connect a floppy disk drive and Figure 3 12 to connect a hard disk drive 6 Replace the 2 S inch hard disk drive 7 Replace the inner chassis cover 8 Replace t...

Page 70: ...System Box FRU Replacement OM 00074 3 Figure 3 12 IDE Hard Drive Rear Connections 3 22 DECpc 433 Workstation Service Guide...

Page 71: ...Box FRU Replacement System Battery To remove the system battery see Figure 3 13 and do the following OM 00649 Figure 3 13 Removing and Replacing the System Battery DECpc 433 Workstation Service Guide...

Page 72: ...S 6 Pull the battery from its mounting pad Velcro fastener located inside the chassis front panel To replace the system battery do the following 1 Place the replacement battery on the mounting pad 2 C...

Page 73: ...lowing 1 Remove the system box outside cover 2 Remove the chassis inner cover 3 Lift up on the intelligent graphics controller until it5 connector is free of system board connector There is an interco...

Page 74: ...System Box FRU Replacement Ot 4 00723 2 Figure 3 14 Removing the Intelligent Graphics Controller 3 26 DECpc 433 Workstation Service Guide...

Page 75: ...riser card into the system ard connector 2 Position the intelligent graphics controller over mounting standoffs and interconnect board riser card 3 Gently press down on the intelligent graphics contro...

Page 76: ...System Box FRU Replacement I I I I I I I OM 00723 3 Figure 3 15 Installing the Intelligent Graphics Controller 3 28 DECpc 433 Workstation Service Guide...

Page 77: ...e the external cache do the following 1 Remove the external cache from its antistatic package being careful not to touch the pins on the chip 2 Align the external cache s pins with the socket contacts...

Page 78: ...System Box FRU Replacement OM 00648 rnal Cache _ Jue nlacinl a uc nu 11 a OVI 1a a 11 l 16 go r g 3 30 Guide kstation Service DECpc 433 Wor...

Page 79: ...all mass storage devices and the system board 5 Loosen the two securing fasteners 6 Using a flat blade screwdriver pry at the position shown in Figure 3 17 until the two fasteners are free of chassis...

Page 80: ...t OM 0 728 2 Figure 3 17 Removing the Power Supply To replace the power supply see Figure 3 18 and do the folJowing 1 Set the power supply under the tabs at the bottom of the chassis 3 32 DECpc 433 Wo...

Page 81: ...the two fastener holes line up Make sure the positioning tab is between the power supply chassis and system box chassis Also make sure no cables are being pinched OM 00728 3 Figure 3 18 Replacing the...

Page 82: ...ving and replacing the SIMMs on either the system board or the intelligent graphics controller is the same It might be necessary to remove additional SIMMs to get sufficient clearance to pull the SIMM...

Page 83: ...slot and press down firmly while maintaining the proper insertion angle 2 When the SIMM seats hold it at each end and gently push the top edge toward the retaining clips until it snaps into place 3 I...

Page 84: ...place the intelligent graphics controller 5 Repiace the chassis inner cover 6 Replace the system box outside cover Figure 3 20 Replacing a SIMM Installed Position Insertion Angle OM 006715 3 3 36 DECp...

Page 85: ...move the 2 5 inch hard disk and the 3 5 inch mass storage device if applicable 5 Remove the six standoffs 6 Tag and disconnect the power supply cable to the system board 7 Tag and disconnect the syste...

Page 86: ...System Hox FRU Replacement I Figure 3 21 Removing the System Board 3 38 I Standoff t I I I Ii i M 00725 2 DECpc 433 Workstation Service Guide...

Page 87: ...system battery and power supply C 1nectors Remove all identification tags 3 Repldce the six standoffs 4 Replace the 3 5 inch and 2 5 inch mass storage device if applicable 5 Replace the intelligent gr...

Page 88: ...System Box FRU Replacement I Standoff D I OM 00725 3 Figure 3 22 Replacing the System Board 3 40 DECpc 433 Workstation Service Guide...

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Page 90: ...ny procedure SCSI Expansion Box FRUs Table 4 1 lists the available FRUs for the SCSI expansion box Table 4 1 SCSI Expansion Box FRUs FRU Digital PN Front bezel plast 74 43560 01 Top cover plastic 74 4...

Page 91: ...International 17 00365 22 Before You Begin 4 2 WARNING Risk of electrical shock Failure to disconnect power before opening the covers can result in personal injury CAUTION Equipment damage Electrosta...

Page 92: ...the system box 3 Disconnect the intemal SCSI cable c1 nnected to the SCSI expansion box 4 Disconnect the SCSI expansion box power cord 5 Unlock the cover 6 Locate the two locking tabs below the cover...

Page 93: ...SCSI Expansion Box FRU Replacement Locking Tab OM 00689 2 Figure 4 1 Removing the SCSI Expansion Box Cover 4 4 DECpc 433 Workstation Service Guide...

Page 94: ...hinges with the chassis 3 Carefully lower the cover until it engage the locking tabs 4 Push down on the cover until you hear the locking tabs snap into place 5 Push down on the cover above the front p...

Page 95: ...SCSI Expansion Box FRU Replacement OM 006811 3 Figure 4 2 Repladng the SCSI Expansion Box Cover DECpc 433 Workstation Service Guide...

Page 96: ...h SCSI device or a 3 5 inch SCSI device The removal and replacement procedures for either is the same only the mounting position in the mounting tray is different To remove a SCSI device do the follow...

Page 97: ...SCSI Expansion Box FRU Replacement SCSI Connector Power Connector Figure 4 3 SCSI Device Rear Connections 5 25 Inch Mounting Tray OM 00694 3 4 8 DECpc 433 Workstation Service Guide...

Page 98: ...3 Remove the mounting tray s1 rt ws and then iift L le mounting tray from the chassis see Figure 4 4 I I I I I 1 j l _____ v P Figure 4 4 Removing a SCSI Device 5 25 Inch Mounting Tray DECpc 433 Works...

Page 99: ...Expansion Box FRU Replacement 4 Remove the SCSI device from the mounting tray see Figure 4 5 OM 00691 Figure 4 5 Removing a SCSI Device from a 5 25 Inch Mounting Tray DECpc 433 Workstation Service Gu...

Page 100: ...Figure 4 6 if your are mounting a 3 25 inch SCSI devi ce in a 5 25 inch tray I I I l I I I I 1 I I I I I I I I I I I I i I I 1 J 1 1 I I I I I II I I I I a a 4 4 OM 00692 Figure 4 6 Attaching a 3 5 ln...

Page 101: ...ce the cover Removing S1 CSI Devices 3 5 Inch Mounting TJray The following procedures provide instructions for removing and replacing a 3 5 inch SCSI device To remove a 3 5 inch SCSI device do the fol...

Page 102: ...SCSI Expansion Box FRU Replacement llllillll _ 1111111111 S SI lntflrnal Cable Figure 4 7 SCSI Device Rear Connections 3 5 Inch Mounting Tray DECpc 433 Workstation Service Guide QM 00698 3 4 13...

Page 103: ...FRU Replacement 3 Remove the mounting tray screw and then lift the mounting tray from the chassis see Figure 4 8 Figure 4 8 Removing a SCSI Device 3 5 Inch Mounting Tray OM 00697 4 14 DECpc 433 Wod st...

Page 104: ...ove the SCSI device from the mounting tray see Figure 4 9 I I I I I I I I I I I I I 1 1 I V lr I I I I l i I I I I I I I a 4 Ot 1 00696 Figure 4 9 Removing a SCSI Device From a 3 5 lnch dounting Tray...

Page 105: ...oved see Figure4 8 7 Connect the power and internal SCSI connectors and then remove all identification tags see Figure 4 7 8 Replace the cover Power Supply To remove the power supply do the following...

Page 106: ...SCSI Expansion Box FRU Replacement OM 00126 Figure 4 10 SCSI Power Supply Mounting DECpc 433 Workstation Service Guide 4 17...

Page 107: ...following 1 Set power supply in the mounting position and replace both retaining screws see Figure 4 10 2 Cunneci the power cables and data cables to the SCSI devices and then remove all identificati...

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Page 109: ...the system board and components that obtain power from the system board Power Requirements Table A 1 lists the power requirements for the system box and the SCSI expansion box Table A 1 Power Requirem...

Page 110: ...mponents that obtain power from the system board Table A 2 Current Requirements Assemblies 5 0 V de 12 0V de 12 0 V de System board with 8 MB of system memory 5 3A 2 SA 2 SA Intelligent graphics contr...

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Page 112: ...system box has seven external connectors two 9 pin D typ serial connectors 02A J2B one 25 pin D type parallel printer connector 010 one 6 pin mini DIN keyboard connector 07 one 6 pin mini DIN mouse c...

Page 113: ...s the pin assignments for the serial ports Table 8 1 Serial Port Pinouts 02A J28 Pin No Signal Function 1 DCD Data carrier detect 2 RXD Receive data 3 TXD Transmit data 4 DTR Data terminal ready 5 GND...

Page 114: ...nter data bit one 4 PRD2R Printer data bit two 5 PRD3R Printer data bit three 6 PRD4R Printer data bit four 7 PRDSR Printer data bit five 8 PRD6R Printer data bit six 9 PRD7R Printer data bit seven 10...

Page 115: ...rs Kevboard and Mouse Table B 3 lists the pin assignments for the keyboard and mouse connectors Table B 3 Keyboard Mouse Pinouts J7 JS Pin No Signal 1 Data 2 Reserved 3 Ground I B 4 DECpc 433 Workstat...

Page 116: ...ble B 4 Monitor Connector Pinouts Pl Pin No Function 1 Red video 2 Green video 3 Blue video 4 Monitor ID bit 2 5 Ground 6 Red return ground 7 Green return ground 8 Blue return ground 9 Key position no...

Page 117: ...Signal 1 11 Ground 12 14 Not connected 15 25 Ground 26 33 Data bits 0 through 7 34 35 Data bit parity 36 Ground 37 Not connected 38 Termination power 39 Not connected 40 Ground 41 Attention 42 Ground...

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Page 119: ...e effect each time you boot the system In addition the Setup utility contains a system infonnation menu that displays L Aal J and secondary cache infonnation The configuration settings include Time an...

Page 120: ...ST numeric sequen e 100 you are prompted to enter Setup Press the appropriate function key 1 TL L f tw C r 1 11e uiSL 0 l 0 iei up SCtt ehS rtgurt J IS utsp1ayeu in the language stored in non volatile...

Page 121: ...Not Installed JOE Disk Not Insta 11 ed 0 1se Memory 640 KB Lr tended Memory 7168 KB CPU Speed Fast Figure C 1 Setup Screen One DECpc 433 Worksbtion Service Guide 19 11 Page l of 2 r Disk Subsystem i C...

Page 122: ...age 2 of 2 SCSI Hard Disk Disabled User Definable Drivers 48 and 49 LAN Boot Enabled I I LAN Timeout 30 Seconds Shadow Enabled Cache Enabled Password Not installed Esc F2 I 11 p u Menu Sys Info Field_...

Page 123: ...uration settings 1 Press the Page Up and Page Down keys to display the Setup screen that contains the configuration settings you want to change 2 Press the up and down arrow keys to select the configu...

Page 124: ...seconds Date This configuration setting specifies the current system date It contains three fields date of the month month and year Language This configuration setting specifies the language in which...

Page 125: ...se Memory This configuration setting is always 640 KB unless an error is detected If an error is detected Setup determines the amount of actual base memory found and inserts this value Extended Memory...

Page 126: ...ter selecting a type return to setup screen 1 and enter the Disk Subsystem options LAN Boot This configuration setting enables or disables the LAN boot process There are two options enabled and disabl...

Page 127: ...cache and the optional external cache Enabling the caches significantly improves system performance by reducing the average number of wait states seen by the i486 microprocessor Password This configur...

Page 128: ...o correct any errors Phoenix SETUP Utility Version 1 00 J Copyright 1985 1990 Phoenix Technologies Ltd Lan Dis IDE Base t1 Extended p tj CPU Exiting SETUP Continue with SETUP Save values exit SETUP an...

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Page 130: ...System 64KB Yest Yest Yes OOOF FFFF BiOSiSCSI BIOS OOOEOOOOto System 64KB No Yest Yes OOOEFFFF BIOS Setup EMS OOOD 8000 to LAN 32KB No No No OOODFFFF BIOS RAM OOOD 0000 to LAN RAM 32KB No No No OOOD7F...

Page 131: ...C NMI 080 09F DMA page register OAO OBF Interrupt controUer two OCO ODF DMA controller two DEC 82340 configuration index register OED 82340 configuration data register DEE FastA20 OEF Fast reset OFO C...

Page 132: ...IGA graphics video 2F8 2FF COM2 340 35C SCSI registers 278 37F LPTt 3B0 3DF Video EGA VGA etc 3C0 3CF P gisters 3F0 3F7 Floppy disk controller 3F8 3FF Corona configuration port 1 COMl 800 Corona confi...

Page 133: ...1 IRQ2 Cascade interrupt 3 2 IRQ8 Real time Clock RTC d 2 IRQ9 Reserved l 4 J 5 2 IRQlO TIGAvideo 6 2 IRQll SCSI interrupt 7 2 IRQ12 Mouse interrupt 8 2 IRQ13 Numeric coprocessor 9 2 IRQ14 Hard disk...

Page 134: ...M t Read write t Byte word IFunction Dual port RAM in64KBmode Dual port RAM in32I Bmode Diagnostic remote boot DECpc 433 Workstation Service Guide Device Mapping Rj rt nnm D Address R W B W DOOOO DBFF...

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Page 136: ...nt 4 5 system box removal 3 4 DECpc 433 Workstation Service Manual Index replacement 3 6 current requirements system board A 2 D device mapping 0 1 disk drive troubleshooting 2 18 E error messages POS...

Page 137: ...I box IN 2 removal 4 1 C replacement 4 18 s system box removal 3 31 replacement 3 32 SCSI box cover removal 4 3 replacement 4 5 peripheral device removal 4 7 4 12 replacement 4 11 4 16 power requireme...

Page 138: ...3 23 rep acementl 3 24 connectors B 1 cover removal 3 4 replacement 3 6 external cache removal 3 29 replacement 3 29 graphics controller removal 3 25 replacement 3 27 inner cover removal 3 9 replaceme...

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