HP Omnibook 500 Service Manual

							HP Omnibook 500 Removal and Replacement 2-15
  Note: LAN/modem models only
 
You may need to remove the system SDRAM module (page 2-12) to provide enough clearance to
disconnect all mini-PCI cables.
 4.
 Disconnect the cable (modem models only) or cables (LAN/modem models only) from the card.
 5.
 Release the latches at the sides of the card, so that its free edge pops up, and carefully pull the
card out of its connector.
 Figure 2-11. Removing the Mini-PCI Card (modem card shown)
Reassembly Notes
 
• Carefully insert the edge of the card into the connector at about a 30° angle until it is fully seated.
Then press down on both sides of the card until the latches snap closed.
 
• Route the cable (modem models) or cables (LAN/modem models) between the heatsink/fan and
mini-PCI card, so that they do not lie across or otherwise interfere with other components (see
Figure 2-12, below). Make sure the cables lie as flat as possible, or they will prevent the keyboard
from laying flat.
 Figure 2-12. Routing the Mini-PCI Cables (LAN/modem card shown) 
						

							2-16 Removal and Replacement HP Omnibook 500
Removing the Switchboard PCA
(User-Replaceable)
Required Equipment
 
• #0 Phillips screwdriver.
Removal Procedure
 1.
 Unplug the AC adapter, if present, and remove the battery.
 2.
 Remove the power button panel (page 2-9).
 3.
 Remove the retaining screw from the switchboard PCA.
  Caution: Wireless models only
 
W hen removing the switchboard PCA from the computer, be careful not to pull on the wireless
cable that connects the display assembly to the PCA.
 4.
 Insert a small flat-blade screwdriver through the narrow slot in the bottom case, and carefully pry
the switchboard PCA off of the connector underneath.
 5.
 
Wireless models only: remove the wireless cable clip, and disconnect the wireless cable from the
PCA.
 6.
 Remove the PCA from the computer.
 
 Figure 2-13. Removing the Switchboard PCA (wireless model shown)
Reassembly Notes
 
• 
Wireless models only: connect the wireless cable to the PCA, and reattach the cable clip.
 
• Insert the back end of the switchboard PCA into its opening in the top case, then press the PCA
onto its connector.
Screw, M2×3mm
W ireless cable clip
attaches here 
						

							HP Omnibook 500 Removal and Replacement 2-17
Replacing Small Parts
(User-Replaceable)
The user can replace the following small parts.
 Table 2-7. Replacing Small Parts (User-Replaceable)
PartReplacement Procedure
Cover, SDRAMFrom the bottom of the computer, remove the screw in the SDRAM module cover,
then remove the cover.
Cover, TrackpointPull the old cover off, and press the new cover into place.
Covers, display hingeUse a flat-blade screwdriver to carefully pry the covers off of the hinges.
Reassembly Notes:
 Insert the tab on the cover into the slot in the top case, and
press the cover into place. Note that the right display hinge cover has a microphone
icon on its front surface.
Covers, display screwInsert a small flat-blade screwdriver under the screw cover and pry it loose. To
replace, press the adhesive side of the cover firmly into the recess.
Feet, rubber (on
bottom of computer
and expansion base)Insert a small flat-blade screwdriver under the foot and pry it loose. To replace, firmly
press the adhesive side of the foot into the recess.
KeyboardSee page 2-10.
Tray, hard disk driveSee page 2-6. 
						

							2-18 Removal and Replacement HP Omnibook 500
Removing the Display Assembly
(HP Authorized Service Providers Only)
Required Equipment
 
• #0 Phillips screwdriver.
 
• Small flat-blade screwdriver.
Removal Procedure
 1.
 Unplug the AC adapter, if present, and remove the battery.
 2.
 Remove both screws from the back of the computer.
 3.
 Remove the power button panel (page 2-9).
 4.
 
Wireless models only: remove the switchboard PCA (page 2-16).
 5.
 Open the display so that it lays flat, and use a flat-blade screwdriver to remove the display hinge
covers.
 6.
 Remove the screw from the display cable, then use a flat-blade screwdriver to lift the display
cable off of its connector.
 7.
 From the bottom of the computer, remove both screws from the display hinges.
  Note
 
Do not remove the screws from the tops of the display hinges:
 8.
 Lift the display off of the computer.
Do NOT remove! 
						

							HP Omnibook 500 Removal and Replacement 2-19
 
 Figure 2-14. Removing the Display
Reassembly Notes
 
• Make sure the display cable fits in its opening in the computer’s case, and lies behind the clip for
the power button panel, as shown in Figure 2-15, below. Press the cable back onto its connector.
 
 Figure 2-15. Routing the Display Cable
Screw, M2×5mm
Screws, M2×7mm (2)
Screws, M2×9mm (2)
Hinge covers
Screw, M2×3mm 
						

							2-20 Removal and Replacement HP Omnibook 500
 
• Note that the right display hinge cover has a microphone icon on its front surface.
  Important
 
After replacing the display, check the display type shown on the display’s flex cable connector.
If the new display is not the same type as the old display, you must use the Service Utilities floppy
disk to reprogram the computer’s EEPROM for the new display.
1.  Download the Omnibook 500 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.  Connect a floppy disk drive to the computer using a USB floppy cable, or dock the computer
and insert a floppy drive module into the expansion base.
3.  Connect an external monitor to the computer, so you can verify the boot process.
4.  Plug in an AC adapter.
5.  Insert the Service Utilities floppy disk in the floppy drive.
6.  Turn on the computer:
 If the HP logo appears on the computer’s built-in display, STOP. The EEPROM is
programmed correctly.
 If the HP logo appears only on the external monitor, press ESC to display the boot menu,
then boot from the floppy disk.
7.  If you hear 5 beeps, press F1 to update the display data stored on the motherboard. Remove
the floppy disk when the computer starts to reboot. 
						

							HP Omnibook 500 Removal and Replacement 2-21
Removing the Heatsink/Fan
(HP Authorized Service Providers Only)
Required Equipment
 
• #0 Phillips screwdriver.
Removal Procedure
 1.
 Unplug the AC adapter, if present, and remove the battery.
 2.
 Remove the power button panel (page 2-9).
 3.
 Open the keyboard (page 2-10, though step 4). You don’t need to disconnect the keyboard cables.
 4.
 Remove the three retaining screws from the heatsink/fan.
  Caution
 
W hen removing the heatsink/fan from the computer, be careful not to pull on the cable that
connect the heatsink/fan to the motherboard.
 5.
 Lift the heatsink/fan out of the computer.
 6.
 Carefully disconnect the fan cable from the motherboard. If the connector does not release easily,
try gently pressing down on the rear of the connector (near the wires) as you pull it out.
 
 Figure 2-16. Removing the Heatsink/Fan
  Caution
 
Do not spin the fan blades with your finger, or you could damage the fan’s bearings.
Screws, M2×3mm (3)
(M2x2mm in some
models
) 
						

							2-22 Removal and Replacement HP Omnibook 500
 7.
 To separate the fan from the heatsink, remove both connecting screws.
 
 Figure 2-17. Separating the Heatsink and Fan
Reassembly Note
 
• Make sure the fan cable is retained by the hook on the underside of the heatsink.
Screws, M2×3mm (2) 
						

							HP Omnibook 500 Removal and Replacement 2-23
Removing the Top Case
(HP Authorized Service Providers Only)
Required Equipment
 
• #0 Phillips screwdriver.
 
• Small flat-blade screwdriver.
Removal Procedure
 1.
 Unplug the AC adapter, if present, and remove the battery.
 2.
 Remove these additional assemblies:
 
• Hard disk drive (page 2-6).
 
• Power button panel (page 2-9).
 
• Keyboard (page 2-10).
 
• Switchboard PCA (page 2-15).
 
• Display assembly (page 2-18).
 3.
 Remove the screws from inside the battery compartment.
 4.
 Remove the six screws from the bottom case.
 5.
 Remove the four screws from the top case.
 6.
 Disconnect the click/scroll button flex cable.
 7.
 Disconnect the audio-off LED cable.
 8.
 Lift the top case off of the computer. 
						

							2-24 Removal and Replacement HP Omnibook 500
 
 
 
 
 
 
 
 
 
 
 
 Figure 2-18. Removing the Top Case
Screws, M2×9mm (2)
Screw, M2×7mm
Screw, M2×7mm
Screws, M2×2mm (2)
Screws, M2×5mm (4)
Screws (2):
See Note
 below.
Screw, M2×2mm
(not on all models)
Note:
 The length of the screws required for the two positions near the front of the
bottom case corresponds to the number of screws in the battery compartment:
• Models with two screws in the battery compartment: use M2×7mm
• Models with three screws in the battery compartment: use M2×9mm