HP Omnibook Xt1500 Service Manual

							Technology Code ID)  Product Information  1-15 
Table 1-6. Functional Structure 
Function  Components Used  Component Roles 
Bootup CPU module 
Motherboard 
Hard disk drive 
CD/DVD drive module Main processor. 
Primary system circuitry. 
First source of disk-based startup code. 
Second source of disk-based startup code. 
Processor CPU module 
Motherboard Main processor, numeric data processor, L1 and L2 cache. 
Primary system circuitry. 
Memory SDRAM module  Video RAM (shared). 
Changeable RAM (2 slots). 
Power Battery 
Motherboard 
 
Keyboard cover switch PCA 
AC adapter Power storage. 
Power control circuitry, AC adapter socket, lid switch, reset 
switch, power supply. 
Power button. 
AC-to-DC converter. 
Display Motherboard 
 
Display assembly Video controller, display drivers, LVDS processing, 
display/graphics controller. 
Display output, backlight, power converter for backlight. 
Hard disk Motherboard 
Hard disk drive Hard disk controller. 
Hard disk mechanism. 
Keyboard Motherboard 
Keyboard 
Keyboard cover 
CD player PCA Keyboard controller, keyboard BIOS. 
Key switches. 
One-Touch buttons. 
CD player buttons. 
Touch pad Motherboard 
Top case Keyboard BIOS. 
Touch/scroll pad sensors, click buttons. 
Audio Motherboard 
 
Display assembly 
USB PCA 
Volume control PCA 
Speakers Audio controller, audio decoder, speaker amplifier, external 
microphone jack. 
Microphone. 
Headphone jack. 
Volume control. 
Sound output. 
Status Motherboard 
Top case 
Keyboard cover switch PCA 
CD player PCA LED circuitry, keyboard controller. 
Status LEDs.  
Status LEDs. 
CD/DVD status display. 
Parallel Motherboard  I/O controller, parallel connector. 
USB Motherboard 
USB PCA Bus controller, USB connectors. 
USB connectors. 
PCMCIA Motherboard 
PCMCIA sockets PCMCIA controller. 
PCMCIA connectors. 
SD-MMC Motherboard SD/MMC controller 
SD/MMC connector 
Infrared Motherboard 
CD player PCA I/O controller. 
Infrared transmitter/receiver. 
Wireless Display assembly 
Motherboard 
Mini-PCI PCA 
Bluetooth PCA 
USB PCA Antennas, on-off button, indicator light. 
I/O controller. 
Radio PCA circuitry. 
Radio PCA circuitry. 
On-off button, indicator light. 
Docking Motherboard  Docking logic, docking connector. 
PC card Motherboard  PC card controller, PC card connector. 
  
						

							Technology Code ID)  Removal and Replacement  2-1 
2 
Removal and Replacement 
This chapter shows how to remove and replace the notebook’s components, listed in the following 
table. The items marked by 
• are user-replaceable. 
  Table 2-1. Removal Cross-Reference 
  
Antenna, Bluetooth (page 2-20). 
Antenna, wireless (page 2-20). 
• Battery (page 2-4). 
Bezel, display (page 2-20). 
Card, mini-PCI (page 2-16). 
Case, bottom (page 2-32). 
Case, top (page 2-27). 
• Cover, expansion SDRAM (page 2-15). 
• Cover, keyboard (page 2-9). 
• Cover, mini-PCI (page 2-15). 
• Covers, screw (page 2-15). 
Display assembly (page 2-18). 
Doors, docking (page 2-35). 
Doors, PCMCIA (page 2-35). 
• Drive, hard disk (page 2-6). 
Fan (page 2-22). 
• Feet, rubber (page 2-15). 
   
Guide, hard disk drive (page 2-38). 
Heatsink (page 2-22). 
• Keyboard (page 2-11). 
Module, CPU (page 2-25). 
• Module, plug-in (page 2-5). 
• Module, expansion SDRAM (page 2-13). 
• Module, system SDRAM (page 2-14). 
PCA, audio (page 2-37) 
PCA, inverter (page 2-20) 
PCA, motherboard (page 2-32). 
PCA, volume control (page 2-39). 
Saddles, hinge (page 2-30). 
Socket, PCMCIA (page 2-39). 
Speaker, left (page 2-39). 
Speaker, right (page 2-39). 
• Tray, hard disk drive (page 2-7). 
 
 
 
Caution 
Always provide proper grounding when performing repairs. W ithout proper  
grounding, an electrostatic discharge can damage the notebook and its  
components. 
   
 
 
Notes 
To reassemble a component, perform the removal procedure in reverse order. Any special notes 
required for reassembly are included at the end of each section. 
Symbols like this are used throughout this chapter to show approximate full-size screw 
outlines. Use these to verify the sizes of screws before you install them. Installing a wrong-size 
screw can damage the notebook. (The symbol shown represents an M2.5×5mm T-head screw.)  
						

							2-2  Removal and Replacement  Technology Code ID) 
Disassembly Flowchart 
The following diagram shows the general “paths” you will use in disassembling the notebook to access 
any particular component. 
 
Figure 2-1. Disassembly Flow 
Start 
Battery, AC adapter, secondary 
SDRAM module, mini-PCI card, 
hard disk drive, DVD/CD-RW drive 
Keyboard cover 
Keyboard 
B 
Left speaker 
Right speaker 
 Docking doors 
 PCMCIA doors 
 PCMCIA socket
 
A 
Display assy 
Heatsink 
CPU module Modules on 
path A 
If removing 
motherboard or 
bottom case, 
modules on 
path B  Top case 
Hinge saddles 
Motherboard or 
bottom case  Audio PCA 
 Volume control PCA 
   CD player PCA 
 Infrared PCA  
 Hard disk drive guide 
 Optical disk drive guides  Primary SDRAM 
Fan  
						

							Technology Code ID)  Removal and Replacement  2-3 
Table 2-2. Required Equipment 
• #0 Phillips screwdriver, preferably magnetized. 
• Small flat-blade screwdriver. 
• .5 mm hex driver. 
 
Table 2-3. Recommended Screw Torques 
Screw Thread Size Torque (cm-kgf) Torque (in-lbf) 
M2.5 (2–11 mm long)  3.0 – 3.5  2.6 – 3.0 
M3 3.0 – 3.5  2.6 – 3.0 
 
 
NOTES  
						

							2-4  Removal and Replacement  Technology Code ID) 
Removing the Battery 
(User-Replaceable) 
Required Equipment 
• None. 
Removal Procedure 
• Slide the battery’s release latch in the direction of the arrow on the latch, then lift the battery out of 
its compartment. 
 
Figure 2-2. Removing the Battery 
Reassembly Notes 
• Insert the front end of the battery into the battery compartment, then press the back end in until the 
battery clicks into place.  
						

							Technology Code ID)  Removal and Replacement  2-5 
Removing a Plug-In Module 
(User-Replaceable) 
Required Equipment 
• None. 
Removal Procedure 
• Slide the module release latch in the direction shown by the arrow on the latch, and remove the 
module. 
  
 
 
 
Figure 2-3. Releasing the Plug-in Module  
						

							2-6  Removal and Replacement  Technology Code ID) 
Removing the Hard Disk Drive 
(User-Replaceable) 
Required Equipment 
• #0 Phillips screwdriver. 
Removal Procedure 
1.  Unplug the AC adapter, if present, and remove the battery. 
2.  On the bottom of the unit, remove both hard drive retaining screws. 
  
 
 
 
Figure 2-4. Removing the Hard Disk Drive 
3.  Carefully pull the hard drive out of the notebook. 
4.  Remove all four screws from the hard drive tray and drive case, then lift the drive out of the tray. 
Screws, 
M2.5×4mm  
						

							Technology Code ID)  Removal and Replacement  2-7 
  
 
 
 
Figure 2-5. Removing the Hard Disk Tray 
Reassembly Notes 
• Insert the connector end of the drive through the opening in the tray, then lower the drive into 
place. 
• Carefully slide the hard drive assembly into its compartment. Press firmly to make sure the 
connector seats properly. 
 
Important 
If you are installing a new hard disk drive, install the factory software and operating system on the 
drive before loading any additional software—see “Recovering and Reinstalling Software,” below. 
 
Screws, 
M2.5x4mm (2) 
Screws, 
M2.5x4mm (2)  
						

							2-8  Removal and Replacement  Technology Code ID) 
Recovering and Reinstalling Software 
Use the Recovery CDs to reinstall the original factory software and operating system. The Recovery 
CDs also provide all HP notebook–specific Windows drivers, which are available in the following 
locations: 
• On the hard drive, under c:\hp\drivers. 
• On the Recovery CDs, under \hp\drivers. 
• On the HP Business Support Web site (www.hp.com/go/bizsupport). This Web site contains the 
latest updates of software drivers for various operating systems. 
To recover the factory software installation 
The following procedure describes how to recover the notebook’s original software and operating 
system. This process can take up to 15 minutes to complete. (For more information about recovering 
the factory software installation, see the file readme.txt in the root directory of the Recovery CDs.) 
 
Caution 
Be sure to back up the hard disk before proceeding. This procedure formats the hard disk, which 
erases all data on the disk. After formatting, you must reinstall any applications. 
 
Do not interrupt the following process or unplug the AC adapter until the process is complete. 
 
1.  Back up all data from the hard disk. 
2.  Connect the AC adapter to the notebook. This is necessary to provide an uninterrupted power 
source: the notebook’s battery alone is not adequate. 
3. Insert Recovery CD disk 1 into the notebook’s CD/DVD drive. If the notebook is turned off, use a 
pin or straightened paper clip to press the release switch on the drive door to open it. 
4.  Turn on or restart the notebook. 
5.  When the HP logo appears, press Esc to display the Boot menu. 
6.  Use the arrow keys to select the CD/DVD drive as the first boot device, then press Enter. 
7. When the Recovery CD dialog box appears, follow the displayed instructions. If prompted, accept 
the recommended partition size. 
To create the Utility partition without installing the factory software, click Advanced and select not 
to install the operating system. 
If the hard disk is partitioned into several drives, you can install the factory software on drive C 
without affecting other drives. Click Advanced and select to restore only the C partition. 
8.  When prompted to reboot the notebook, press Ctrl+Alt+Del and follow any instructions that 
appear. 
 
Note 
W indows XP supports the NTFS file system.