HP Omnibook Xe4500 Service Manual
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HP Omnibook XE4100/XE4500 Product Information 1-13 Table 1-8. Omnibook XE4100, XE4500 Accessories AccessoryDescriptionOmnibook XE4500 Omnibook XE4100 Memory F4694-60901128MB DDR266B • F4695-60901256MB DDR266B • F4696-60901512MB DDR266B • 1818-8504SDRAM module, 128MB PC133 SODIMM (X16) • 1818-8635SDRAM module, 256MB PC133 SODIMM (X16) • 1818-8604SDRAM module, 512MB PC133 SODIMM (X8) • Hard Drives 0950-4288HDD-40GB 9.5mm, Toshiba ATA100 •• 0950-4320HDD-40.0GB 9.5mm, IBM ATA100 FDB •• Power Options 0950-3988 AC-Adapter-Ultraslim 60W , 19V Output • F4600-60901 AC-Adapter-Ultraslim Delta 75W s/PFC • F4809-60901 Battery, LiIon 4.4AHr 8 Cell Li-Ion •• 8120-6312Cord, Pwr, Austr #ABG (2w) •• 8120-8373Cord, Pwr, China #AB2 (2w) •• 8120-8373Cord, Pwr, China #AB2 (2w) •• 8120-6314Cord, Pwr, Europe #ABB (2w) •• 8120-6316Cord, Pwr, Japan #ABJ (2w) •• 8120-6317Cord, Pwr, S.Afr #ACQ (2w) •• 8120-8699 Cord, Pwr, UK (EPSR) For Hong Kong (2w) •• 8120-6313 Cord, Pwr, US #ABA (2w) •• PC Cards F4640-60978Card, mini-PCI-802.11B France •• F4640-60977Card, mini-PCI-802.11B worldwide •• Docking F4808-60901 Port Replicator Assy• Adapter F1469A PS/2 Y adapter••
1-14 Product Information HP Omnibook XE4100/XE4500 Internal Design The motherboard PCA is the central component of the notebook’s design. It plays a role in virtually all system functions. The CPU module and most other subsystems connect to the motherboard. The following figure shows the connections among the notebook’s replaceable electronic modules. Table 1-9 on page 1-15 lists the roles that these modules play in the notebook’s functional subsystems. Figure 1-5. Replaceable Module Diagram
HP Omnibook XE4100/XE4500 Product Information 1-15 Table 1-9. Functional Structure Description BootupCPU module Motherboard Hard disk drive Floppy driveMain processor (MMO). Primary system circuitry, system BIOS. First source of disk-based startup code. Second source of disk-based startup code. ProcessorCPU module MotherboardMain processor, numeric data processor, L1 and L2 cache. Primary system circuitry. MemoryMotherboard SDRAM moduleVideo RAM (XE4500). Changeable SDRAM (2 slots), video RAM (XE4100). no onboard SDRAM (XE4100/XE4500) PowerBattery Motherboard Switchboard PCA AC adapterPower storage. AC adapter socket, reset button, lid switch, power supply, power control circuitry. Power button AC-to-DC converter. DisplayMotherboard SDRAM module Display assemblyGraphics controller, video RAM (XE4500) Shared video RAM (XE4100). Display output, backlight, power converter for backlight. Hard diskMotherboard Hard disk driveHard disk controller. Hard disk mechanism. Floppy driveMotherboard Floppy driveI/O controller, floppy connector. Floppy drive mechanism. KeyboardMotherboard Switchboard PCA KeyboardKeyboard BIOS, keyboard controller. Power switch, one-touch buttons Key switches. PS/2 TouchpadMotherboard Top caseKeyboard circuitry, keyboard controller, keyboard BIOS. Touch pad sensor, click buttons, controller (PS/2 output). AudioMotherboard Speaker assemblyAudio controller, audio decoder, speaker amplifier, microphone, external audio jacks, headphone amplifier, audio-off switch. Speakers. StatusMotherboard Switchboard PCA Top caseLED circuitry, keyboard controller. Keyboard LEDs. Main status LEDs. SerialMotherboard I/O controller, serial connector. ParallelMotherboard I/O controller, parallel connector. InfraredMotherboard IR PCAI/O controller. Infrared transmitter/receiver. PS/2 portMotherboard PS/2 connector, keyboard controller. USBMotherboard Bus controller (South Bridge), USB connector. S-VideoMotherboard I/O controller, S-video connector (certain models). Port ReplicatorMotherboard Port replicator logic, port replicator connector (certain models). PCMCIAMotherboard PCMCIA socketPCMCIA controller. PCMCIA connectors. Wireless LAN (certain models)Mini-PCI Antenna PCAs IR PCAI/O controller, radio, radio frequency circuitry. Transmit/receive antennas. On/off switch, indicator light. LANMotherboard LAN circuitry, bus controller, LAN connector. ModemMotherboard Modem circuitry (certain models), modem connector.
HP Omnibook XE4100/XE4500 Removal and Replacement 2-1 2 Removal and Replacement This chapter tells you how to remove and replace the notebook’s components and assemblies. The items marked by • in the following table are user-replaceable. Table 2-1. Removal Cross-Reference • Assembly, speaker (page 2-12). Battery, CMOS (page 2-37). • Battery, main (page 2-4). • Card, wireless LAN mini-PCI (page 2-6). Case, bottom (page 2-35). Case, top (page 2-20). • Cover, keyboard (page 2-10). Assembly, display (page 2-17). • Door, mini-PCI (page 2-9). • Door, SDRAM (page 2-9). Doors, PCMCIA (page 2-35). • Drive, CD/DVD (page 2-16). Drive, floppy (page 2-22). • Drive, hard disk (page 2-7). • Feet, rubber (page 2-9). Heatsink (with fan) (page 2-27). • Keyboard (page 2-13). • Module, SDRAM (page 2-5). Module, CPU (page 2-29). PCA, antennas (page 2-17). PCA, I/R (page 2-25). PCA, motherboard (page 2-31). PCA, switchboard (page 2-13). • Rubber screw plugs, display (page 2-9). Caution Always provide proper grounding when performing repairs. W ithout proper grounding, an electrostatic discharge can damage the notebook and its components. Notes Reassembly steps are the reverse of the removal steps. Reassembly notes are included at the end of each section below. Symbols like these are displayed throughout this chapter to show approximate full-size screw outlines. You can use these to verify the sizes of screws before you install them. Installing a wrong- size screw can damage the notebook. (The symbol at the left represents an M2.5 × 4 mm T-head screw.)
2-2 Removal and Replacement HP Omnibook XE4100/XE4500 Table 2-2. Required Equipment • Small Phillips screwdriver, preferably magnetized. • Small flat-blade screwdriver. • 5 mm nut driver Table 2-3. Recommended Screw Torque Values Screw Thread SizeTorque (cm-kgf)Torque (in-lbf) M2 2,0 – 2,5 1.7 – 2.2 M2.5 (hinges) 3,5 – 4,0 3.0 – 3.4 M2.5 (other) 2,5 – 3,0 2.2 – 2.6 M3 2,5 – 3,0 2.2 – 2.6 Standoff, hex 2,5 – 3,0 2.2 – 2.6
HP Omnibook XE4100/XE4500 Removal and Replacement 2-3 Disassembly Flowchart The following diagram shows the general “path” you will use when disassembling the notebook to access any particular component. Figure 2-1. Disassembly Flow
2-4 Removal and Replacement HP Omnibook XE4100/XE4500 Removing the Battery (User-Replaceable) Required Equipment • None. Removal Procedure • Slide the battery’s release latch, then pull the battery out of its compartment. Figure 2-2. Removing the Battery
HP Omnibook XE4100/XE4500 Removal and Replacement 2-5 Removing a SDRAM Module (User-Replaceable) The notebook has no system memory built into its motherboard, but has two slots for SDRAM modules. One slot contains an SDRAM module that was factory installed. Note Omnibook XE4100 models use only PC133 SDRAM modules, and Omnibook XE4500 models use only DDR266 SDRAM modules. Using the wrong type of module prevents the notebook from booting. Caution Handle the SDRAM module only by its edges and provide proper grounding, or you might damage the module through electrostatic discharge. Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the AC adapter, if present, and then remove the battery. 2. On the bottom of the notebook, loosen the captive screws holding the SDRAM door, and then remove the door. 3. Press outward on the latches at the sides of the SDRAM module to release it (the SDRAM module pops up). 4. Carefully pull the SDRAM module out of the connector. Figure 2-3. Removing an SDRAM Module Reassembly Notes • Carefully press the SDRAM module into the connector at an angle of about 30°, until it is fully inserted. Then press down on both sides of the SDRAM module until the latches snap closed.
2-6 Removal and Replacement HP Omnibook XE4100/XE4500 Removing the Wireless LAN Mini-PCI Card (User-Replaceable) Certain notebooks include a wireless LAN mini-PCI card under the mini-PCI door on the bottom of the notebook. Caution Handle the Mini-PCI card only by its edges and provide proper grounding, or you might damage the card through electrostatic discharge. Required Equipment • Small Phillips screwdriver. Removal Procedure 1. Unplug the AC adapter, if present, and then remove the battery. 2. On the bottom of the notebook, loosen the captive screws holding the Mini-PCI door, and then remove the door. Caution Be careful when connecting and disconnecting the antenna cables from the mini-PCI card. Damaged cables or connectors can degrade notebook performance. 3. Disconnect the two antenna cables from the mini-PCI card. 4. Press outward on the latches at the sides of the mini-PCI card to release it (the mini-PCI card pops up). 5. Carefully pull the mini-PCI card out of the connector. Figure 2-4. Removing the Mini-PCI Card Reassembly Notes • Carefully press the mini-PCI card into the connector at an angle of about 30°, until it is fully inserted. Then press down on both sides of the mini-PCI card until the latches snap closed.