Dell Inspiron 2100 Service Manual Download Page 31

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Dell PowerEdge 2100/180 and 2100/200 Systems Service Manual

System Board Layout

The subsections that follow provide service-related information about the sys-
tem board components.

Figure 1-11. System Board Components

keyboard (bottom) and
mouse (top) connec-
tors (KYBD/MOUSE)

video connector
(JVGA)

parallel port connector
(PARALLEL)

serial port 1 (bottom)
and serial port 2 (top)
connectors (SERIAL)

diskette/tape drive interface
connector (FLOPPY)

control-panel connector
(PANEL)

battery socket
(BATTERY)

top of the computer

microprocessor socket

EISA connectors (EISA1
[lower], EISA2, and EISA3)

fan connector (FAN)

power connector (POWER)

3-volt power connector
(POWER3V)

auxiliary fan connector
(AUXFAN)

DIMM connectors (DIMM_A
[lower], DIMM_B, DIMM_C,
and DIMM_D)

PCI connectors (PCI4
[lower], PCI5, and
PCI6)

server management
connector (SRV_MGT)

integrated SCSI port
connector (SCSI)

Summary of Contents for Inspiron 2100

Page 1: ...Dell PowerEdge 2100 180 and 2100 200 Systems Dell PowerEdge 2100 180 and 2100 200 Systems SERVICE MANUAL Model MMM ...

Page 2: ......

Page 3: ... Dell PowerEdge 2100 180 and 2100 200 Systems SERVICE MANUAL ...

Page 4: ...of Dell Computer Corporation MS DOS and Microsoft are registered trademarks of Microsoft Corporation IBM is a registered trademark of International Business Machines Corporation Intel LANDesk and Pentium are registered trademarks of Intel Corporation Other trademarks and trade names may be used in this document to refer to either the entities claiming the marks and names or their products Dell Com...

Page 5: ...ves 1 7 connectors locations 1 14 4 14 control panel assembly location 1 4 removal 4 6 D DC power distribution diagram 1 13 DIMMs ECC 1 6 installation 4 15 removal 4 15 socket population rules 1 6 diskette drive access indicator location 1 3 location 1 4 4 7 removal 4 8 diskette based diagnostics 2 6 DREQ line assignments list of 1 18 drives boot device 1 8 externally accessible drive bays 1 3 loc...

Page 6: ...al procedures 2 1 initialization system error messages 3 3 insert removal front bezel 4 5 integrated SCSI controller 1 7 server management 1 6 video controller 1 7 interrupt assignments list of 1 17 J jumpers list of 1 16 location on system board 1 15 M memory system 1 6 messages error 3 3 microprocessor removal 4 16 P PCI expansion cards 1 6 Plug and Play ISA expansion cards 1 6 POST beep codes 3...

Page 7: ...stem Setup program advanced menu A 6 boot options submenu A 5 exit menu A 10 key functions list of A 2 main menu A 3 menus A 1 screen color combinations A 3 screen conventions A 1 security menu A 8 starting A 1 system unit See computer T technical specifications 1 19 termination jumpers SCSI drives 1 8 troubleshooting boot routine observing 2 3 external visual inspection 2 2 initial procedures 2 1...

Page 8: ...gure 4 2 Front Bezel Removal 4 4 Figure 4 3 Front Bezel Insert Removal 4 5 Figure 4 4 Control Panel Assembly Removal 4 6 Figure 4 5 Drive Hardware 4 7 Figure 4 6 Externally Accessible Drives Removal 4 8 Figure 4 7 Drive Mounting Rails and Extensions Removal 4 9 Figure 4 8 Hard Disk Drive Removal 4 10 Figure 4 9 Expansion Card Removal 4 11 Figure 4 10 Power Supply Removal 4 12 Figure 4 11 System Co...

Page 9: ...xii DELL CONFIDENTIAL Preliminary 4 19 00 Figure A 2 Boot Options Submenu A 5 Figure A 3 Advanced Menu A 6 Figure A 4 Security Menu A 8 Figure A 5 Exit Menu A 10 ...

Page 10: ...ents 1 17 Table 1 4 DREQ Line Assignments 1 18 Table 1 5 Technical Specifications 1 19 Table 3 1 POST Beep Codes 3 2 Table 3 2 System Error Messages 3 3 Table A 1 Main Menu Categories A 4 Table A 2 Boot Options Submenu Categories A 5 Table A 3 Advanced Menu Categories A 7 Table A 4 Security Menu Categories A 9 Table A 5 Exit Menu Categories A 11 ...

Page 11: ...xiv DELL CONFIDENTIAL Preliminary 4 19 00 ...

Page 12: ... SCSI Controller 1 7 SCSI Hard Disk Drives 1 7 SCSI Configuration Guidelines 1 7 SCSI ID Numbers 1 8 Device Termination 1 8 System Unit 1 10 System Power Supply 1 10 Pin Assignments for the DC Power Connectors 1 10 DC Power Distribution 1 12 System Board Layout 1 14 System Board Jumpers 1 15 Interrupt Assignments 1 17 DMA Channel Assignments 1 18 Technical Specifications 1 19 ...

Page 13: ...T Beep Codes 3 1 System Error Messages 3 3 Chapter 4 Removing and Replacing Parts 4 1 Recommended Tools 4 1 Precautionary Measures 4 2 Computer Cover 4 3 Front Bezel 4 4 Front Bezel Inserts 4 5 Control Panel Assembly 4 6 Drives 4 7 Externally Accessible Drives 4 8 Hard Disk Drives 4 10 Expansion Cards 4 11 System Power Supply 4 12 System Cooling Fan 4 13 System Board Components 4 14 DIMMs 4 15 Mic...

Page 14: ...nternal View 1 5 Figure 1 5 SCSI Termination Jumper Examples 1 9 Figure 1 6 DC Power Connector P1 1 11 Figure 1 7 DC Power Connectors P2 P3 P4 P5 and P6 1 11 Figure 1 8 DC Power Connectors P7 1 12 Figure 1 9 DC Power Cables 1 12 Figure 1 10 DC Power Distribution 1 13 Figure 1 11 System Board Components 1 14 Figure 1 12 System Board Jumpers 1 15 Figure 4 1 Computer Cover Removal 4 3 Figure 4 2 Fron...

Page 15: ...tem Board Assembly Removal 4 19 Figure 4 19 System Board Removal 4 20 Figure A 1 Main Menu A 3 Figure A 2 Boot Options Submenu A 5 Figure A 3 Advanced Menu A 6 Figure A 4 Security Menu A 8 Figure A 5 Exit Menu A 10 Tables Table 1 1 DC Voltage Ranges 1 10 Table 1 2 Jumper Descriptions 1 16 Table 1 3 Interrupt Assignments 1 17 Table 1 4 DREQ Line Assignments 1 18 Table 1 5 Technical Specifications 1...

Page 16: ...ix ...

Page 17: ...ible PCs and prior training in IBM compatible PC troubleshooting techniques In addition to information pro vided in this manual and the User s Guide that came with the system Dell provides the Diagnostics and Troubleshooting Guide for troubleshooting pro cedures and instructions on using the Dell diagnostics to test the computer system WARNING A WARNING indicates the potential for bodily harm and ...

Page 18: ...mputer system The microprocessor module is installed in a zero insertion force ZIF socket on the system board This allows upgrading of the system board to a faster more powerful microprocessor when one becomes available Contact Dell for infor mation about Dell supported microprocessor upgrades The Pentium Pro microprocessor contains a built in clock multiplier circuit which increases the internal ...

Page 19: ...gradable flash memory attached to the EISA bus Integrated super I O controller attached to the EISA bus provides a bidirectional parallel port two serial ports and the diskette drive interface Integrated ultra fast 20 wide small computer system interface SCSI controller Integrated server management circuitry that monitors operation of the sys tem cooling fan for running or not as well as critical ...

Page 20: ... front bezel reset button should be used only when the system cannot be rebooted by pressing CTRL ALT DEL Before you use the reset button to initiate a hardware reset close any open application program and any files if possible back of computer right side left side front of computer power indicator power button reset button hard disk drive access indicator 3 5 inch diskette drive CD ROM drive CD R...

Page 21: ...e 1 3 Front Right Side Internal View system power supply diskette controller cable system board mounting plate diskette drive power cables system cooling fan control panel cable SCSI cable CD ROM drive internal hard disk drive cage third drive bay control panel assembly ...

Page 22: ...igure 1 4 Back Left Side Internal View SCSI hard disk drive cage SCSI cable hard disk drive power cables system board AC power input connector I O panel connectors externally accessible drive bays 3 voltage selection switch ...

Page 23: ...Expansion Subsystem The computer system offers advanced expansion subsystems that can support a mixture of traditional EISA expansion cards Plug and Play ISA expansion cards and PCI expansion cards The EISA Configuration Utility included with the system provides a means of avoiding resource conflicts that might arise from such an arrangement After all legacy cards have been configured with the EIS...

Page 24: ...rd disk drive cage is located under the externally accessible drive bays at the front of the computer see Figure 1 4 The SCSI hard drive cage can contain up to three 1 6 inch high SCSI hard disk drives either fast wide or ultra fast 20 wide These SCSI hard disk drives mount vertically The SCSI hard disk drive bays are populated from left to right facing the front of the computer so that the SCSI t...

Page 25: ...onfigured as SCSI ID 0 You can configure any additional hard disk drives to any of the still available SCSI ID numbers If Dell installs additional SCSI hard disk drives in the system they will be configured as SCSI ID 1 and SCSI ID 2 NOTE There is no requirement that SCSI ID numbers be assigned sequentially or that devices be attached to the cable in order by ID number Device Termination Before in...

Page 26: ...D ROM drive See the documentation that came with your SCSI controller card for instructions Figure 1 5 shows an example of a SCSI termination jumper on a CD ROM drive NOTE When you install or remove a termination jumper do not move or remove any other jumpers installed on the drives Figure 1 5 SCSI Termination Jumper Examples example CD ROM drive termination jumper example hard disk drive back vie...

Page 27: ...ut connectors on the system board or drives Pin Assignments for the DC Power Connectors The power supply output voltages can be measured at the back wire side of the connectors without disconnecting them Figures 1 6 1 7 and 1 8 show the wire side of the connectors Table 1 1 DC Voltage Ranges Voltage Range Maximum Output Current1 3 3 VDC 3 15 to 3 45 VDC 14 0 A 5 VDC 4 75 to 5 25 VDC 29 0 A 12 VDC ...

Page 28: ...ified in Table 1 1 Figure 1 6 DC Power Connector P1 Figure 1 7 DC Power Connectors P2 P3 P4 P5 and P6 11 1 PWRGOOD 2 orange 12 VDC blue 12 VDC yellow 5 VFP purple common black 2 3 4 5 6 7 8 9 10 12 13 14 15 16 17 18 19 20 P1 5 VDC red 5 VDC red 5 VDC red 5 VDC red 5 VDC red 5 VDC red common black common black common black PSON 1 grey common black common black common black 5 VDC white not used brow...

Page 29: ...ormation about DC power distribution Power supply connector identification Power cable connections for diskette tape CD ROM and hard disk drives Power distribution to sockets and connectors on the system board Figure 1 9 DC Power Cables 1 2 3 4 3 3 VDC blue white common black common black 5 P7 6 3 3 VDC blue white 3 3 VDC blue white common black P7 P6 P5 P4 P3 P2 P1 ...

Page 30: ...rocessor core regulator 12 VDC 5 VDC 5 VDC 5 VDC 5 VDC PANEL SPKR KYBD MOUSE FAN 5 VFP 5 VDC 3 5 inch diskette drive power management logic keyboard controller battery 3 VDC P1 EISA1 through EISA3 PCI4 through PCI6 MICROPROCESSOR DIMM_C DIMM_B DIMM_A P4 internal hard disk drive optional drive P5 P6 RTC NVRAM P7 3 3 VDC system board CD ROM drive internal hard disk drive system power supply Y cable ...

Page 31: ...RALLEL serial port 1 bottom and serial port 2 top connectors SERIAL diskette tape drive interface connector FLOPPY control panel connector PANEL battery socket BATTERY top of the computer microprocessor socket EISA connectors EISA1 lower EISA2 and EISA3 fan connector FAN power connector POWER 3 volt power connector POWER3V auxiliary fan connector AUXFAN DIMM connectors DIMM_A lower DIMM_B DIMM_C a...

Page 32: ...System Overview 1 15 System Board Jumper Figure 1 12 System Board Jumpers CARDBIOS VGA EISA PASSWD 180 MHZ 200 MHZ jumpered unjumpered ...

Page 33: ...t installed PASSWD Password enable disable Jumper installed to activate boot password feature EISA Clear EISA configuration settings Install the jumper and boot the system to clear the con figuration settings Remove the jumper and use the EISA Configuration Util ity to configure the system VGA Integrated VGA controller enable disable Install to enable the inte grated VGA controller CARDBIOS Used f...

Page 34: ... Available for use by expansion card unless this IRQ line is used by secondary parallel port IRQ6 Generated by super I O controller to indicate that diskette or tape drive requires service IRQ7 Generated by super I O controller to indicate that device con nected to parallel port requires service IRQ8 Generated by keyboard controller for each tick of RTC IRQ9 Available for use by expansion card IRQ...

Page 35: ... Line Assignments DREQ Line Used By Available DREQ0 Available DREQ1 Available DREQ2 Generated by super I O controller to initiate DMA cycle for attached diskette drive DREQ3 Available DREQ4 Generated by bus controller chip to activate second DMA con troller DREQ5 Available DREQ6 Available DREQ7 Available ...

Page 36: ...cessor 33 MHz with the 200 MHz microprocessor EISA 7 5MHzwiththe180MHzmicroprocessor 8 33 MHz with the 200 MHz microprocessor PCI expansion card connectors three no shared expansion card slots EISA expansion card connectors three no shared expansion card slots System Clocks System clock 60 or 66 MHz matches external processor speed Diskette communica tions ports 24 MHz from the system clock Memory...

Page 37: ...for SCSI hard disk drives up to 1 6 inch high Ports Externally accessible Serial DTE two 9 pin connectors 16550 compatible Parallel one 25 hole connector bidirectional Video one 15 hole connector VGA compatible PS 2 style key board 6 pin mini DIN PS 2 compatible mouse 6 pin mini DIN Internally accessible SCSI controller one 68 pin ultra fast 20 wide connector Diskette drive 34 pin connector Contro...

Page 38: ...th 41 91 cm 16 5 inches Weight maximum 17 68 kg 39 0 lb Environmental Temperature Operating 10 to 35 C 50 to 95 F Storage 40 to 65 C 40 to 149 F Relative humidity 8 to 80 noncondensing Maximum vibration Operating 0 25 G at 3 to 200 Hz for 30 min Storage 0 5 G at 3 to 200 Hz for 30 min Maximum shock Operating half sine wave form 50 G for 2 ms Storage half sine wave form 110 G for 2 ms square wave f...

Page 39: ...1 22 Dell PowerEdge 2100 180 and 2100 200 Systems Service Manual ...

Page 40: ... or indicate the appropriate troubleshooting procedure to use After the user describes the problem follow these steps 1 Ask the user to back up any data on the hard disk drive if the system s condition permits Appendix C Maintaining the System in the User s Guide provides infor mation about backing up data 2 Ask the user to try to duplicate the problem by repeating the operations he or she was per...

Page 41: ...t connectors and its captive screws must be secure enough to ensure a firm connection 4 If present verify that any network cables are attached properly 5 Verify that any devices attached to the serial and parallel port connec tors are properly connected Each of the serial and parallel interface cables must be firmly attached to an appropriate connector on the back of the system unit as well as to ...

Page 42: ...It may be necessary to reboot the system several times in order to complete all of these steps To observe problem indications during the boot routine follow these steps 1 Insert the diagnostics diskette into drive A Turn on all peripherals and the system unit If the system unit is already on press the reset button or CTRL ALT DEL to reboot the system 2 Check the power supply fan Does the fan run n...

Page 43: ...ppear Yes See Running the Diskette Based Diagnostics found later in this chapter No Proceed to step 6 6 Insert another copy of the diagnostics diskette into the diskette drive and reboot the system Does the Diagnostics Menu appear Yes See Running the Diskette Based Diagnostics found later in this chapter No Proceed to the next section Internal Visual Inspection Internal Visual Inspection A simple ...

Page 44: ...over 7 Reconnect the system unit and any attached peripherals to their power sources and turn them on Does the problem appear to be resolved Yes No further steps are necessary Terminate the procedure No Proceed to the next sections Eliminating Resource Conflicts Run ning the Diskette Based Diagnostics and to Getting Help Eliminating Resource Conflicts Devices within the system unit may require ded...

Page 45: ...iagnos tics Menu appears This menu lets you choose the following options or exit to the Microsoft MS DOS prompt RUN QUICK TESTS Runs selected tests from all test groups to quickly locate a failure or to indicate where further testing is needed to isolate a failure RUN ALL TESTS Runs all tests for a thorough test of the system RUN SPECIFIC TESTS Tests a particular area or subsystem Getting Help If ...

Page 46: ...e system may emit a series of beeps that identifies the problem or that can help you identify a faulty component or assembly Table 3 1 lists the beep codes that may be gener ated during the POST Most beep codes indicate a fatal error that prevents the system from completing the boot routine until the indicated condition is corrected When the system emits a beep code record the code and then find i...

Page 47: ...4 1 1 DRAM failure Defective DIMMs or sys tem board Reseat the DIMMs or replace the sys tem board 1 4 2 1 CMOS failure Defective system board 1 4 3 1 Memory controller or DIMM failure Defective DIMMs or sys tem board Reseat the DIMMs or replace the sys tem board 2 1 2 3 Invalid ROM copy right notice Defective system board 2 2 3 1 Unexpected interrupt Improperly seated expan sion card or the system...

Page 48: ...guration data is corrupted Run the System Setup program to restore your system configuration Incorrect drive A type Run Setup The diskette drive does not match the diskette drive type stored in the config uration data Run the System Setup program to restore your system configuration Incorrect drive B type Run Setup The diskette drive does not match the diskette drive type stored in the config urat...

Page 49: ...lty or the keyboard controller is defective Defective keyboard keyboard cable or system board EISA con figuration NVRAM bad The EISA jumper may have been acci dentally installed Be sure the EISA jumper is removed then reboot the sys tem and restore the EISA configuration EISA con figuration error The EISA configu ration data in NVRAM does not match the installed EISA expansion cards Be sure the EI...

Page 50: ...esource Conflicts in Chapter 2 Expansion ROM not initialized The BIOS detected a resource conflict while configuring a Plug and Play ISA or PCI expansion card See Eliminating Resource Conflicts in Chapter 2 System con figuration data write error The system board may be malfunction ing Defective system board System mem ory size has changed Run Config uration Utility A DIMM was added or removed The ...

Page 51: ...3 6 Dell PowerEdge 2100 180 and 2100 200 Systems Service Manual ...

Page 52: ...You have removed the computer cover You can replace or reinstall a part by performing the removal procedure in reverse order unless additional information is provided Recommended Tools Most of the procedures in this chapter require the use of one or more of the fol lowing tools Small flat blade screwdriver Wide flat blade screwdriver Number 1 and number 2 Phillips head screwdrivers 1 4 inch nutdri...

Page 53: ...rm the following steps in the sequence listed 1 Turn off the computer and any attached peripherals 2 Disconnect the computer and any attached peripherals from their power sources to reduce the potential for personal injury 3 Disconnect any communications cables 4 Wear a wrist grounding strap and clip it to an unpainted metal sur face such as the system power supply s fan guard on the computer chas...

Page 54: ... computer cover follow these steps 1 Remove the four cover mounting screws at the back of the computer 2 Slide the cover backward about one inch then grasp the front of the cover and the handle at the back of the cover and lift the cover straight up off the chassis cover mounting screws 4 handle ...

Page 55: ...uter cover 2 Pry the front bezel loose with your finger tips and remove it from the chassis As you pry the front bezel loose pry at different points around the bezel to keep the opening between the front bezel and the computer chassis equal on all sides to prevent damage to the bezel alignment pins alignment holes 5 retaining clips 6 retaining holes 6 alignment pins 5 ...

Page 56: ...l with both hands and place your fingers on the outside of the front bezel insert 3 Push on the outside of the front bezel insert indicated by the two arrows then twist the sides of the front bezel outward until the front bezel insert is released To replace a front bezel insert position one end of the insert in place under its latch then press the other end into place until the tab snaps under the...

Page 57: ...nnec tor on the system board see Figure 4 12 The PANEL connector is near the top of the system board on the right side of the computer chassis 2 Remove the screw holding the control panel assembly to the front of the computer chassis 3 Lift the control panel assembly out of the two chassis tabs 4 Remove the control panel assembly cable from the hole in the chassis control panel assembly screw chas...

Page 58: ...igure when you perform any of the procedures in the following subsections Figure 4 5 Drive Hardware SCSI hard disk drives SCSI interface cable CD ROM drive 3 5 inch diskette drive DC power cables diskette drive interface cable diskette drive interface connector FLOPPY lower externally accessible drive bay optional drive SCSI connector SCSI ...

Page 59: ...ternally accessible drive bays follow these steps 1 Disconnect the DC power cable and the interface cable from the back of the drive Be sure to record the power connector number and interface cable connector identification 2 Press inward toward center of drive on the two drive release tabs and slide the drive out of the bay 3 Remove the drive mounting rails and drive mounting extensions if present...

Page 60: ...s use a 50 pin to 68 pin adapter between the SCSI cable and the drive connector Check the back of the drive for an adapter if present remove it and retain it for use on the new drive Figure 4 7 Drive Mounting Rails and Extensions Removal When you reinstall a SCSI drive set the SCSI address jumpers and the SCSI bus termination jumpers to the settings you recorded drive release tabs drive mounting r...

Page 61: ...acket toward the back of the computer until the alignment tabs disengage from the alignment rails then lift it out of the computer 5 Remove the four hard disk drive mounting screws from the hard disk drive then slide the drive out of the bracket 6 Record the setting of the SCSI address jumpers and SCSI bus termina tion jumper When you reinstall a hard disk drive set the SCSI address jumpers and th...

Page 62: ...tached to the expansion card you want to remove Be sure to record the location of each cable before you disconnect it 3 Remove the expansion card retaining screw 4 Grasp the expansion card by its corners and carefully remove it from the expansion card connector expansion card expansion card retaining screw card guide slots inside front of computer ...

Page 63: ...ee Figure 4 12 the externally accessible drives and the hard disk drives see Figure 4 5 Be sure to record the connector number and plug location for each power cable 3 Remove the four power supply mounting screws 4 Slide the power supply forward about an inch to clear the retaining tabs then lift it out of the computer When you reinstall the power supply be sure the slots on the bottom of the powe...

Page 64: ...outside back of the chassis pull the plungers completely out of the push fasteners 4 Remove the system cooling fan and the push fastener barrels from the chassis To replace the system cooling fan use four new push fasteners New push fas teners have the plunger inserted part way into the barrel Align the mounting holes in the system cooling fan with the holes in back wall of the chassis Insert each...

Page 65: ...s SERIAL keyboard bottom and mouse top connectors KYBD MOUSE diskette tape drive interface connector FLOPPY control panel connector PANEL battery connector BATTERY top of the computer microprocessor socket EISA connectors EISA1 lower EISA2 and EISA3 fan connector FAN power connector POWER 3 volt power connector POWER3V auxiliary fan connector AUXFAN DIMM connectors DIMM_A lower DIMM_B DIMM_C and D...

Page 66: ...the DIMM away from the socket Figure 4 14 DIMM Installation To replace a DIMM press outward on the securing clips at each end of the socket until they snap open Orient the DIMM to the socket and press down on the outer edges of the DIMM with your thumbs while pulling up on the securing clips until they lock around the ends of the DIMM 1 securing clip 2 2 DIMM securing clip 2 1 2 DIMM ...

Page 67: ...or heat sink assembly Press down on the folded part of the clip with a small screwdriver to release the clip 4 Push outward and then upward on the release lever to rotate the lever to its fully vertical position 5 Lift the microprocessor heat sink assembly out of its socket see Figure 4 16 WARNING The microprocessor can get extremely hot during sys tem operations Be sure it has had sufficient time...

Page 68: ...ily slip into the socket When the microprocessor heat sink assembly is in place rotate the microprocessor release lever to its horizontal position NOTE Pin 1 on the microprocessor is located on the corner with the largest bevel The pin 1 hole in the microprocessor socket is located on the corner where the holes are in a diagonal pattern Hook the microprocessor securing clip over the socket tab nea...

Page 69: ...he battery out of its socket with your fingers or with a blunt nonconducting object such as a plastic screwdriver To replace the system battery orient the new battery with the facing up Insert the battery into its socket and snap it into place Compare the system con figuration information with the copy of the system configuration settings you made in step 1 Restore any system configuration informa...

Page 70: ... screws 5 Remove the system board assembly from the chassis as follows a Slide the system board assembly about a half inch toward the front of the system to free the connectors at the back of the system board b Raise the top of the system board assembly up enough to allow access to the system board cables c Disconnect the power cables the control panel cable the diskette drive interface cable syst...

Page 71: ...surface 3 Remove the system board mounting screw 4 Slide the system board toward the front of the computer to disengage the system board mounting clips 5 Lift the system board out of the system board mounting bracket If you are replacing the system board remove the DIMMs and the micro processor from the old system board and install them on the replacement board system board mounting screw system b...

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