compaq presario 1100 series mobile pc User Manual

							 
 
 Caution 
 Do not spin the fan blades with your finger, or you could damage the fan’s bearings. 
 
Reassembly Notes 
• If the thermal pad is damaged, use a sharp knife or scraper to carefully remove it from the heat 
sink, then attach a new thermal pad. 
• Install the heatsink screws in this order: 
1. Install all three screws lightly. 
2. Fully tighten the screws in the order marked on the heatsink. 
Service Manual Removal and Replacement 2-27  
						

							 
Removing the CPU Module 
(Authorized Service Providers Only) 
Required Equipment 
• Small flat-blade screwdriver. 
Removal Procedure 
1. 
2. 
Unplug the AC adapter, if present, and remove the battery. 
Remove these additional assemblies: 
• Hard disk drive (page 2-6). 
• Keyboard cover (page 2-10). 
• Switchboard PCA (page 2-13). 
• Keyboard (page 2-13). 
• Display assembly (page 2-17). 
• Top case (page 2-20). 
• Heatsink (page 2-16). 
2-28 Removal and Replacement Service Manual  
						

							 
3. Turn the lock screw one-half turn counterclockwise to release the CPU module (you should hear a 
light snap). Carefully lift the CPU module off of its socket on the motherboard. 
  
 
IMPORTANT: See th
Caution on the nex
page before 
reinstalling the CPU 
module! 
e 
t 
Figure 2-17. Removing the CPU Module 
Reassembly Notes 
 
Caution 
Each time you install a new CPU module, you must also replace the heat sink’s thermal pad to 
maintain optimum heat transfer. Use a sharp knife or scraper to carefully remove the old thermal 
pad from the heat sink, then attach the new thermal pad. 
 
• The CPU module is keyed for installation, and can be inserted only one way. 
• Carefully insert the CPU module into the motherboard, and turn the lock screw one-half turn 
clockwise to secure the CPU module. 
• Be sure to replace the thermal pad on the heatsink, as described in the reassembly notes on  
page 2-27. 
Service Manual Removal and Replacement 2-29  
						

							 
Removing the Motherboard 
(Authorized Service Providers Only) 
Required Equipment 
• #1 Phillips screwdriver. 
Removal Procedure 
 
Note: Before Replacing the Motherboard 
If possible, record the computer’s electronic serial number before you replace the motherboard. 
You will then store the electronic serial number in the EEPROM on the new motherboard using the 
Service Utility floppy disk. 
1. Download the notebook service package from the Partnership Web site (see page vi), and 
create a Service Utilities floppy disk as described in the package’s Readme file. 
2. Plug in an AC adapter. 
3. Insert the Service Utilities floppy disk in the floppy drive. 
4. Turn on the notebook. When the HP logo appears (on either the built-in display or the external 
monitor), press Esc to display the boot menu, then choose Removable Device and boot from 
the floppy disk.  
5. Select the Serial Number option from the boot menu. 
6. When prompted, type A for the automatic update option. This stores the current system data 
from the old motherboard on the floppy disk. 
 
1. 
2. 
Unplug the AC adapter, if present, and remove the battery. 
Remove these additional assemblies: 
• Hard disk drive (page 2-6). 
• Keyboard cover (page 2-10). 
• Keyboard (page 2-13). 
• CD/DVD drive (page 2-16). 
• Display assembly (page 2-17). 
• Top case (page 2-20). 
• Heatsink (page 2-16). 
• Floppy drive (page 2-17). 
2-30 Removal and Replacement Service Manual  
						

							 
Caution: Wireless Models 
Be careful when removing and attaching antenna cables. Damage to cables or connectors can 
degrade performance. 
 
Wireless models only: Remove the mini-PCI door and unplug the two antenna cables from the 
mini-PCI card. Do not remove the mini-PCI card at this time. 
3. 
4. 
5. 
6. 
7. 
8. 
Remove the four screws that attach the motherboard to the bottom case. 
From the back of the notebook, remove the six standoffs (two each from the external monitor port, 
serial port, and parallel port). 
Remove the antenna cable from the metal holder on the motherboard. 
Carefully lift the motherboard out of the bottom case. 
If present, remove the modem port cover. 
 
  
 
Standoff, 5mm (6)
Screw, 
M2.5×4mm (4) 
Figure 2-18. Removing the Motherboard 
Service Manual Removal and Replacement 2-31  
						

							 
Reassembly Notes 
 
Important 
After replacing the display assembly or motherboard, you must use the Service Utilities floppy disk 
to reprogram the EEPROM on the motherboard for the new display. 
1. Download the notebook Series service package from the Partnership Web site (see page vi), 
and create a Service Utilities floppy disk as described in the package’s Readme file. 
2. Plug in an AC adapter. 
3. Insert the Service Utilities floppy disk in the floppy drive. If the unit has no internal floppy drive, 
connect a USB floppy drive. 
4. Turn on the notebook. 
5. When you see the HP logo, press ESC to display the boot menu, then boot from the floppy 
drive. 
6. Select the option to update the display/LCD identification stored on the motherboard. 
 
• If you are replacing the CPU module, you must also replace the thermal pad on the heat sink (see 
page 2-28). 
Wireless Models Only 
• Before installing the motherboard, make sure the round coaxial cables from the antenna PCAs are 
held in place by the clips in the bottom case. 
• Make sure there is sufficient length to the front antenna PCA cables so they can easily be 
connected to the mini-PCI card. 
Reassembly Procedure 
 
Caution 
Be extremely careful when replacing the motherboard. The motherboard has EMI springs attached 
to it that can bend very easily. Bending any EMI spring could cause a motherboard short. 
 
 
Note: Reprogramming the BIOS IC 
A new BIOS IC contains only enough basic programming to enable the notebook to boot. After 
installing a new motherboard, you must reprogram the BIOS IC, preferably with the latest  
BIOS—see page 2-35. 
 
2-32 Removal and Replacement Service Manual  
						

							 
1. 
2. 
Remove the following components from the old motherboard and install onto the new 
motherboard: 
• CPU module 
• Wireless LAN mini-PCI card (if present) 
• SDRAM modules 
Follow the reassembly notes in the section entitled “Removing the Motherboard” on page 2-32. 
 
Note: After Replacing the Motherboard 
If present, insert the modem port cover into the modem port opening. Afterwards, you must use 
the Service Utility floppy disk to store the system data and display information in the EEPROM on 
the new motherboard. To do so: 
1. Plug in an AC adapter. 
2. Insert the Service Utilities floppy disk in the floppy drive. 
3. Turn on the notebook. 
4. If you hear 5 beeps, press F1 to update the display data stored on the motherboard. Let the 
notebook reboot and go to the next step. 
5. Select the Serial Number option from the boot menu. 
6. If you successfully stored system data on the floppy disk before removing the old 
motherboard, type A for the automatic update. This restores the old system data on the new 
motherboard. 
If you did not store system data, type M for the manual update option. Enter the serial number 
from the bottom of the notebook—you might have to contact an HP support center to do this. 
Service Manual Removal and Replacement 2-33  
						

							 
Replacing Components on a Bottom Case 
Reassembly Procedure 
1. 
2. 
3. 
4. 
1. 
2. 
3. 
4. 
5. 
Transfer the plastic wireless panel, and if present, the docking port cover from the old bottom case 
to the new bottom case. 
Install a new Microsoft Product ID label. 
Transfer the old serial number label and install a new overlay, or create a new serial number label 
using the steps below. 
Follow the “Reassembly Notes” on page 2-32. 
Installing a New Serial Number Label 
Download the latest version of the serial number label template (Microsoft Word format) from the 
Partnership Web site (see page vi) under Support/Service in Technical Support Information. The latest 
version includes fields for warranty period and manufacturing location. Store the template with other 
Word templates on a PC connected to a laser printer.  
Open a new document based on the serial label template. 
Enter the information from the old serial label, and print the new label on plain white paper. The 
new label does not have barcodes. 
Carefully cut out the new serial label just inside the border and place it into the inner recess in the 
bottom case. The bottom of the label goes toward the front of the case. 
Make sure all regulatory labels that were on the old bottom case are also on the new bottom case. 
While holding the paper label in place, attach a serial label overlay in\
to the outer recess. The 
overlay covers and protects the serial label. 
HP Serial Number (S)TW711A1234 1YR 
(1P) F2072 W   EA   MFG# TW711A1234 
Made in Taiwan 
Figure 2-19. Example of Serial Number Label 
2-34 Removal and Replacement Service Manual  
						

							 
Replacing the Left and Right Antennas 
If you need to remove or replace an antenna, see the figure below. 
Caution 
Handle the connector ends of the antennas carefully. Failure to do so could degrade notebook 
performance. 
Handle the antenna routing metal tabs in the bottom case carefully. These tabs can be easily 
broken. 
 
1. 
2. 
Carefully remove both antennas from the old bottom case. 
Route both antenna cables through the new bottom case as shown below. Make sure you leave 
enough room at the cable connector end to connect to the mini-PCI card. 
 
Figure 2-20. Replacing the Antennas 
  
Replacing a PCMCIA Door 
If you need to remove or replace a PCMCIA door, see the figure below. 
  
 
Figure 2-21. Removing a PCMCIA Door  
  
Service Manual Removal and Replacement 2-35  
						

							 
Repairing the BIOS IC 
(Authorized Service Providers Only) 
The notebook’s BIOS IC cannot be replaced separately. If it is defective, you must replace the 
motherboard. In some cases, however, you might be able to reprogram a malfunctioning BIOS IC using 
either e-DiagTools for Windows, a BIOS floppy disk, or a Crisis Recovery floppy disk. 
If the notebook will boot sufficiently, use e-DiagTools for Windows or a BIOS floppy disk to 
reprogram the BIOS IC. If you cannot boot the notebook adequately, use a Crisis Recovery floppy 
disk. See below for instructions for all three methods. 
Using e-DiagTools for Windows 
 
Caution 
The BIOS update completely replaces the previous BIOS, so follow these directions exactly or you 
might damage the notebook. The BIOS update also resets the configurations in the BIOS Setup 
utility—except for BIOS passwords—so record these before performing the update. 
Update the notebook’s BIOS as follows: 
1. 
2. 
3. 
4. 
5. 
6. 
7. 
In Windows, exit any programs that are running. 
Undock the notebook if it is docked, and remove any PCMCIA cards from it. 
Connect the AC adapter to the notebook. 
Connect any cables or equipment needed to connect to the Internet. 
Click Start > Programs (or All Programs) > Hewlett-Packard > Notebook > HP e-DiagTools > 
e-DiagTools for Windows. 
Click Update, select Download New and click OK. Follow the instructions that appear. Once the 
update process begins, do not interrupt it. 
The first time you make an Internet connection from this program on a particular unit, click 
Change Settings in the Connect window to define your connection settings. 
When the process completes, press the power button to reset the notebook. 
BIOS updates are available from the HP Business Support Web site (www.hp.com/go/bizsupport). 
Installation utilities and instructions for creating a BIOS floppy disk are provided with the updates. 
2-36 Removal and Replacement Service Manual