Dell® PowerEdge® 2100/180 and 2100/200 Systems SERVICE MANUAL ® Model MMM
Dell® PowerEdge® 2100/180 and 2100/200 Systems SERVICE MANUAL ®
Information in this document is subject to change without notice. 1996 Dell Computer Corporation. All rights reserved. Reproduction in any manner whatsoever without the written permission of Dell Computer Corporation is strictly forbidden.
Index B D battery, removal, 4-18 DC power distribution diagram, 1-13 beep codes, 3-1 DIMMs ECC, 1-6 installation, 4-15 removal, 4-15 socket population rules, 1-6 bezel, removal, 4-4 boot routine, observing when troubleshooting, 2-3 bracket, hard-disk drive, removal, 4-10 diskette drive access indicator location, 1-3 location, 1-4, 4-7 removal, 4-8 C diskette-based diagnostics, 2-6 cables, DC power, 1-12 DREQ line assignments, list of, 1-18 CD-ROM drive access indicator location, 1-3 location, 1
expansion-card slots, 1-6 expansion-cards, removal, 4-11 J externally-accessible drives, removal, 4-8 jumpers list of, 1-16 location on system board, 1-15 F M front bezel features, 1-3 insert removal, 4-5 removal, 4-4 memory, system, 1-6 H P hard-disk SCSI drives bracket removal, 4-10 location, 4-7 PCI expansion cards, 1-6 external visual inspection, 2-2 hard-disk drives, SCSI configurations, 1-7 messages, error, 3-3 microprocessor removal, 4-16 Plug and Play ISA expansion cards, 1-6 POST bee
S T SCSI controller, integrated, 1-7 technical specifications, 1-19 SCSI devices, ID numbers, 1-8 termination jumpers SCSI drives, 1-8 SCSI hard-disk drives.
Figures Figure 1-1. Figure 1-2. Figure 1-3. Figure 1-4. Figure 1-5. Figure 1-6. Figure 1-7. Figure 1-8. Figure 1-9. Figure 1-10. Figure 1-11. Figure 1-12. Figure 4-1. Figure 4-2. Figure 4-3. Figure 4-4. Figure 4-5. Figure 4-6. Figure 4-7. Figure 4-8. Figure 4-9. Figure 4-10. Figure 4-11. Figure 4-12. Figure 4-13. Figure 4-14. Figure 4-15. Figure 4-16. Figure 4-17. Figure 4-18. Figure 4-19. Figure A-1. Computer Orientation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure A-2. Figure A-3. Figure A-4. Figure A-5. Boot Options Submenu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-5 Advanced Menu. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-6 Security Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-8 Exit Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Tables Table 1-1. Table 1-2. Table 1-3. Table 1-4. Table 1-5. Table 3-1. Table 3-2. Table A-1. Table A-2. Table A-3. Table A-4. Table A-5. DC Voltage Ranges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10 Jumper Descriptions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16 Interrupt Assignments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17 DREQ Line Assignments. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DELL CONFIDENTIAL xiv Preliminary 4/19/00
Contents Chapter 1 System Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 System Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 System Memory . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Advanced Expansion Subsystem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6 Integrated Server Management . . . . . . . . . . . . . . . . . . . . . . . . . .
Chapter 2 Basic Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1 Initial User Contact . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . External Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Observing the Boot Routine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Internal Visual Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Appendix A System Setup Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 System Setup Screens . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Screen Conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-1 Key Function Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A-2 Screen Color Combinations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Figure 4-7. Figure 4-8. Figure 4-9. Figure 4-10. Figure 4-11. Figure 4-12. Figure 4-13. Figure 4-14. Figure 4-15. Figure 4-16. Figure 4-17. Figure 4-18. Figure 4-19. Figure A-1. Figure A-2. Figure A-3. Figure A-4. Figure A-5. Drive-Mounting Rails and Extensions Removal . . . . . . . . . . . . . 4-9 Hard-Disk Drive Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10 Expansion Card Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11 Power Supply Removal . . . . . . . .
ix
Read This First A prerequisite for using this manual to service Dell computer systems is a basic knowledge of IBM®-compatible PCs and prior training in IBMcompatible PC troubleshooting techniques. In addition to information provided in this manual and the User’s Guide that came with the system, Dell provides the Diagnostics and Troubleshooting Guide for troubleshooting procedures and instructions on using the Dell diagnostics to test the computer system.
Chapter 1 System Overview The Dell ® PowerEdge® 2100/180 and 2100/200 systems, covered in this manual are high-speed, upgradable, server systems, which use the Intel® Pentium® Pro family of microprocessors. PowerEdge 2100 systems incorporate the highperformance peripheral component interconnect (PCI) local bus as well as the extended industry-standard architecture (EISA) expansion bus.
System Features In addition to the standard features found in a traditional personal computer, Dell PowerEdge 2100 systems include the following new and/or advanced features: • 256 KB of cache memory internal to the Pentium Pro module • 16 MB of 72-bit wide, buffered, extended-data output (EDO)-type main memory, upgradable to 256 MB • Memory error correction code (ECC) feature is built into the memory controller on the system board • Advanced combination EISA and PCI expansion subsystem • Three EISA and
When following the text in this manual, assume that the location or direction relative to the computer is as shown in Figure 1-1. back of computer left side right side front of computer Figure 1-1. Computer Orientation 3.5-inch diskette drive diskette-drive access indicator CD-ROM drive CD-ROM–drive access indicator (BUSY) power button power indicator hard-disk-drive access indicator third drive bay reset button Figure 1-2.
diskette controller cable system power supply power cables control panel assembly control panel cable diskette drive SCSI cable CD-ROM drive system cooling fan third drive bay internal hard-disk drive cage Figure 1-3.
voltage selection switch externally-accessible drive bays (3) AC power input connector SCSI hard-disk drive cage SCSI cable I/O panel connectors hard-disk-drive power cables system board Figure 1-4.
System Memory System memory has a minimum of 16 MB of 72-bit wide, buffered, EDO-type memory. The system memory capacity can be expanded up to 256 MB by using combinations of 16-, 32-, and 128-MB buffered, EDO-type dual in-line memory modules (DIMMs). The system board has four, 168-pin DIMM sockets. The DIMMs can be mixed. The socket population rules are as follows: • Populate the DIMM sockets in order from DIMM_A (lower) to DIMM_D (upper). • The DIMMs should be rated at 60 nanoseconds (ns) or faster.
Video Controller The video subsystem is built into the system board and consists of a high-speed, high-resolution VGA-compatible video subsystem. The video controller is connected to the PCI local bus. The standard video subsystem contains 1 MB of video memory (the video memory size is not upgradable). Maximum noninterlaced resolutions are 640 x 480 pixels with 16.7 million colors or 800 x 600 pixels with 65,536 colors. Maximum interlaced resolution is 1024 x 768 pixels with 256 colors.
SCSI ID Numbers Each device attached to the SCSI host adapter must have a unique SCSI ID number from 0 to 15. See Chapter 9, “Installing Drives in the Internal Bays” in the User’s Guide for additional SCSI addressing information. NOTE: Any narrow SCSI devices installed in the external drive bays will require SCSI ID numbers less than 7.
• If you install an optional SCSI controller card to control the CD-ROM drive and any other SCSI device in the externally-accessible drive bays, you must enable termination for the SCSI controller card and the SCSI device at the end of the SCSI interface cable (preferably the CD-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.
System Unit The following subsections provide service-related information about the computer. System Power Supply The 230-W system power supply can operate from an AC power source of 115 VAC at 60 Hz or 230 VAC at 50 Hz. The system power supply provides the DC operating voltages and currents listed in Table 1-1. NOTE: The power supply produces DC voltages only under its loaded condition.
–5 VDC (white) +5 VDC (red) common (black) +5 VDC (red) common (black) +5 VDC (red) not used (brown) common (black) PSON# 1 (grey) +5 VDC (red) 11 12 13 14 15 16 17 18 19 20 4 8 P1 1 2 3 5 6 7 9 10 common (black) +5 VDC (red) common (black) common (black) –12 VDC (blue) +5 VDC (red) +12 VDC (yellow) common (black) +5 VFP (purple) PWRGOOD 2 (orange) 1 Pin 11 — PSON# should measure between +4 and +5 VDC except when the power button on the front panel is pressed, taking PSON# to
P7 1 2 3 4 5 6 +3.3 VDC (blue/white) +3.3 VDC (blue/white) +3.3 VDC (blue/white) common (black) common (black) common (black) Figure 1-8. DC Power Connectors P7 DC Power Distribution Figures 1-9 and 1-10 provide the following information 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 P1 P4 P5 P7 P6 P3 P2 Figure 1-9.
system board keyboard controller +3 VDC battery P1 POWER power management logic RTC/ NVRAM PWRGOOD system power supply optional drive CD-ROM drive PSON# +5 VFP +5 VDC –5 VDC +12 VDC –12 VDC PSON# +5 VFP +5 VDC –5 VDC +12 VDC –12 VDC P7 +3.3 VDC POWER3V P2 3.5-inch diskette drive +5 VDC –5 VDC +12 VDC –12 VDC EISA1 through EISA3 battery (+3 VDC) +3.
System Board Layout The subsections that follow provide service-related information about the system board components.
System Board Jumper 200 MHZ 180 MHZ PASSWD EISA VGA CARDBIOS jumpered unjumpered Figure 1-12.
Table 1-2. Jumper Descriptions Jumper Description Settings 200MHZ Microprocessor speed Installed if the microprocessor’s internal speed is 200 MHz, otherwise, not installed. 180MHZ Microprocessor speed Installed if the microprocessor’s internal speed is 180 MHz, otherwise, not 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 configuration settings.
Interrupt Assignments Table 1-3. Interrupt Assignments IRQ Line Used By/Available IRQ0 Generated by system timer. IRQ1 Generated by keyboard controller to indicate that keyboard’s output buffer is full. IRQ2 Generated internally by interrupt controller to enable IRQ8 through IRQ15. IRQ3 and IRQ4 Generated by super I/O controller to indicate that device connected to corresponding serial port requires service (IRQ3 for COM2 or COM4; IRQ4 for COM1 or COM3).
DMA Channel Assignments Table 1-4.
Technical Specifications Table 1-5. Technical Specifications Microprocessor Microprocessor type . . . Intel Pentium Pro microprocessor Microprocessor speed . . 200 or 180 MHz Internal cache . . . . . . . . 256 KB Math coprocessor . . . . . internal to the microprocessor System Information System chip set . . . . . . . Intel 440FX controller chip set Data bus width . . . . . . . 64 bits Address bus width. . . . . 32 bits Expansion Bus Bus types. . . . . . . . . . . . PCI and EISA Bus speed .
Table 1-5. Technical Specifications (Continued) Integrated SCSI Controller Type . . . . . . . . . . . . . . . Adaptec AIC-7880 ultra wide SCSI controller with integrated 68-pin SCSI connector on the system board Drives Externally accessible bays. . . . . . . . . . . . . . . . Internally accessible bays. . . . . . . . . . . . . . . . one 5.25-inch bay (upper bay) dedicated to a 3.5-inch diskette drive; one 5.25-inch bay (middle bay) containing a CD-ROM drive; one 5.
Table 1-5. Technical Specifications (Continued) Video Video type . . . . . . . . . . . Video memory (standard) . . . . . . . . . . . ATI mach64 (264VT) PCI video controller with integrated VGA connector 1 MB (not upgradable) Power DC power supply: Wattage . . . . . . . . . . 230 W Voltage . . . . . . . . . . 90 to 135 V at 60 Hz; 180 to 265 V at 50 Hz Backup battery . . . . . . . 3.0-V CR2032 lithium coin cell Physical Height . . . . . . . . . . . . . . 44.45 cm (17.5 inches) Width. . . . . . . .
1-22 Dell PowerEdge 2100/180 and 2100/200 Systems Service Manual
Chapter 2 Basic Troubleshooting T his chapter describes basic troubleshooting procedures that can help you diagnose a computer system problem. These procedures can often reveal the source of a problem or indicate the correct starting point for troubleshooting the system. A brief explanation of how to load and start the diskette-based diagnostics is located at the end of the chapter. Dell recommends that you perform the following procedures in the order they are presented in this manual.
External Visual Inspection The external visual inspection is a quick inspection of the exterior of the system unit, the monitor, the keyboard, any peripherals, and cables. While performing the visual inspection, make any necessary corrections. To perform the external visual inspection, follow these steps: 1. Turn off the system unit, the monitor, and all peripherals. 2. Verify that all power cables are properly connected to the system unit, the monitor and peripherals, and their power sources. 3.
9. Inspect the exterior of the system unit, including all controls and indicators, and all user-accessible data storage devices for any signs of physical damage. Does the inspection reveal any problems? Yes. Proceed to the appropriate procedure in Chapter 4, “Removing and Replacing Parts.” No. Proceed to the next section, “Observing the Boot Routine.
4. During the boot routine, observe the system for any of the following: • Diskette-drive and hard-disk drive access indicators: These indicators light up in response to data being transferred to or from the drives. If either of these indicators fails to light up during the boot routine, troubleshoot the diskette drive or hard-disk drive subsystem, as appropriate. • System error messages: These messages can indicate problems or provide status information.
3. Verify that the microprocessor, DIMMs, and expansion cards, are fully seated in their sockets or connectors. WARNING: The microprocessor can get extremely hot. Be sure the chip has had sufficient time to cool before you touch it. While reseating the microprocessor, wear a wrist grounding strap or maintain contact with a metal surface on the chassis. To reseat the microprocessor, remove it from its socket and reinstall it as described in “Microprocessor/Heat Sink Assembly” in Chapter 4.
Running the Diskette-Based Diagnostics The diskette-based diagnostics (included with the system) contain tests that aid in troubleshooting all major components of the computer system. CAUTION: To prevent damage to the original diagnostics diskette, always use a backup copy of the diagnostics diskette when servicing a user’s system. Dell recommends that users make several copies of this diskette to ensure that one is always available.
Chapter 3 Beep Codes and Error Messages T his chapter describes beep codes and system error messages that can occur during POST or, in the case of some failures, during normal system operation. The tables in this chapter list faults that can cause a beep code or system error message to occur and the probable causes of the fault in each case.
Table 3-1. POST Beep Codes (Continued) 3-2 Beep Code Error Probable Causes 1-3-1-3 Keyboard controller error Defective DIMMs or system board. Reseat the DIMMs or replace the system board. 1-3-3-1 No DIMM memory installed Defective DIMMs or system board. Reseat the DIMMs or replace the system board. 1-3-4-1 DRAM failure Defective DIMMs or system board. Reseat the DIMMs or replace the system board. 1-3-4-3 DRAM failure Defective DIMMs or system board.
System Error Messages Table 3-2 lists (in alphabetical order) system error messages that can appear on the monitor screen. These messages can help you find the source of a problem. Some of these error messages indicate fatal errors. When a fatal error occurs, the system cannot usually be rebooted until an appropriate hardware change has been made. Table 3-2. System Error Messages Message Definition Probable Causes System battery is dead - Replace and run Setup The system battery is dead.
Table 3-2. System Error Messages (Continued) 3-4 Message Definition Probable Causes Operating system not found The system did not find a bootable operating system. Use a diskette with a bootable operating system on it in drive A, or load a bootable operating system from the hard-disk drive. System cache error - Cache disabled The microprocessor chip malfunctioned. Defective microprocessor or system board. System timer error A chip on the system board malfunctioned.
Table 3-2. System Error Messages (Continued) Message Definition Probable Causes Resource conflict The BIOS detected a resource conflict while configuring a Plug and Play ISA or PCI expansion card. See “Eliminating Resource Conflicts” in Chapter 2. Warning: IRQ 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.
3-6 Dell PowerEdge 2100/180 and 2100/200 Systems Service Manual
Chapter 4 Removing and Replacing Parts T his chapter provides procedures for removing the components, assemblies, and subassemblies in the computer. Unless otherwise noted, each procedure assumes the following: • You have performed the steps in “Precautionary Measures” found later in this chapter. • 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.
Precautionary Measures Before you perform any of the procedures in this chapter, take a few moments to read the following warning for your personal safety and to prevent damage to the computer from ESD. WARNING FOR YOUR PERSONAL SAFETY AND PROTECTION OF THE EQUIPMENT: Before you start to work on the computer, perform the following steps in the sequence listed. 1. Turn off the computer and any attached peripherals. 2.
Computer Cover handle cover-mounting screws (4) Figure 4-1. Computer Cover Removal To remove the 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.
Front Bezel retaining holes (6) retaining clips (6) alignment holes (5) alignment pins (5) Figure 4-2. Front Bezel Removal To remove the front bezel, follow these steps: 1. Remove the computer 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.
Front-Bezel Inserts latch tab front-bezel insert Figure 4-3. Front-Bezel Insert Removal To remove a front-bezel insert, follow these steps: 1. Remove the front bezel. 2. With the inside of the front bezel facing you; grasp the front bezel 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 frontbezel insert is released.
Control Panel Assembly top of computer right side of computer screw control panel assembly chassis tabs (2) Figure 4-4. Control-Panel Assembly Removal To remove the control panel assembly, follow these steps: 1. Disconnect the control-panel assembly cable from the PANEL connector 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.
Drives Figure 4-5 shows an example of drive hardware that can be installed in the computer. Refer to this figure when you perform any of the procedures in the following subsections. diskette drive interface cable diskette drive interface connector (FLOPPY) 3.5-inch diskette drive CD-ROM drive SCSI connector (SCSI) lower externally accessible drive bay (optional drive) DC power cables SCSI interface cable SCSI hard-disk drives Figure 4-5.
Externally Accessible Drives 3.5-inch diskette drive in top bay CD-ROM drive in middle bay lower-bay drive position for optional drive drive-release tab (2) Figure 4-6. Externally Accessible Drives Removal All of the externally accessible drives have drive-mounting rails. The 3.5-inch drives also have drive-mounting extensions between the drive and the drivemounting rails. To remove a drive assembly from one of the externallyaccessible drive bays, follow these steps: 1.
4. If the drive is a SCSI drive, record the setting of the SCSI address jumpers and SCSI bus termination jumper. 5. If present, remove the 50-pin to 68-pin adapter from the SCSI connector on the back of the drive. Some drives 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.
Hard-Disk Drives hard-disk drive left alignment tab hard-disk drive bracket alignment rails hard-disk-drive mounting screws (4) right alignment tab (on outside of bracket) mounting screws (4) Figure 4-8. Hard-Disk Drive Removal The hard-disk drives are mounted inside a hard-disk drive bracket. The harddisk drive bracket must be removed before a hard-disk drive can be removed. To remove a hard-disk drive, follow these steps: 1. Lay the computer on its right side. 2.
Expansion Cards expansion-card retaining screw expansion card card-guide slots (inside front of computer) Figure 4-9. Expansion Card Removal 1. Lay the computer on its right side. 2. Disconnect any cables attached 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.
System Power Supply power supply power-supply mounting screws (4) AC power connector Figure 4-10. Power Supply Removal To remove the system power supply, follow these steps: 1. Disconnect the AC power cable from the AC power connector on the back of the power supply. 2. Disconnect the DC power cables from the system board (see 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.
System Cooling Fan system cooling-fan mounting pushfasteners (4) system cooling fan system cooling-fan connector (FAN) push-fastener removed push-fastener installed new push-fastener plunger plunger barrel back wall of chassis system cooling fan Figure 4-11. System Cooling-Fan Removal To remove the system cooling fan, follow these steps: 1. Lay the computer on its right side. 2. Disconnect the system cooling-fan cable from the FAN connector on the system board (see Figure 4-12). 3.
System Board Components The subsections that follow contain procedures for removing system board components.
DIMMs DIMM 2. securing clip (2) 1. Figure 4-13. DIMM Removal To remove a DIMM, push outward on the DIMM socket’s securing clips until the DIMM is released from its socket. Then lift the DIMM away from the socket. DIMM securing clip (2) 2. 1. 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.
Microprocessor/Heat Sink Assembly heat sink microprocessor securing clip hooks over tabs on socket (front and back) microprocessor socket socket release lever microprocessor Figure 4-15. Microprocessor Securing Clip Removal To remove the microprocessor/heat sink assembly, follow these steps: 1. Remove the system board assembly. 2. Lay the system board assembly on a flat surface. 3. Remove the microprocessor securing clip from the microprocessor/heat sink assembly.
microprocessor securing clip heat sink thermal interface pad (attached to the heat sink) microprocessor microprocessor socket pin-1 corner of socket front tab Figure 4-16. Microprocessor/Heat Sink Assembly The heat sink and microprocessor are separate. Look at the bottom side of the heat sink and peel the thermal-pad protective cover off before attaching the heat sink to the microprocessor.
System Battery battery BATTERY socket Figure 4-17. System Battery Removal WARNING: There is a danger of the new battery exploding if it is incorrectly installed. Replace the battery only with the same or equivalent type recommended by the manufacturer. Discard used batteries according to the manufacturer’s instructions. To remove the system battery, follow these steps: 1. If possible, enter the System Setup program, and make a printed copy of the System Setup screens (see Appendix A). 2.
System Board Assembly system board assembly system-board-assembly mounting screws (4) system board cables Figure 4-18. System Board Assembly Removal To remove the system board assembly, follow these steps: 1. Disconnect all cables from their connectors at the back of the computer. Be sure to record where each cable is attached. 2. Remove all of the expansion cards. 3. Lay the computer on its left side. 4. Remove the four system-board-assembly mounting screws. 5.
System Board front of computer system-board mounting screw system-board mounting clips (10) Figure 4-19. System Board Removal To remove the system board, follow these steps: 1. Remove the system board assembly. 2. Lay the system board assembly on a flat worksurface. 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.
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