HP Pavilion Zt1100 Xz100 Service Manual

							HP Pavilion zt1100/xz100 Omnibook xt1000  Removal and Replacement  2-29 
  
 
 
Figure 2-21. Removing the Top Case 
Reassembly Notes 
• Make sure the touch pad cable and CD player PCA cable are securely connected. 
• If present, reinsert the wireless cables into their slot in the top case. 
• Make sure the tabs along the edges of the case snap shut. 
Screw, M2×4mm 
Screws, 
M2.5x6mm (2) Screws, 
M2×4mm (2) 
Screws, 
M2×4mm (2)  
						

							2-30  Removal and Replacement  HP Pavilion zt1100/xz100 Omnibook xt1000 
Removing the Hinge Saddles 
(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 these additional assemblies: 
• Keyboard cover (page 2-9). 
• Keyboard (page 2-11). 
• Display assembly (page 2-18). 
• Top case (page 2-27). 
3.  Remove the two retaining screws from the right hinge saddle, and lift the hinge saddle out of the 
notebook. 
4.  Remove the three retaining screws from the left hinge saddle, and lift the hinge saddle out of the 
notebook.  
						

							HP Pavilion zt1100/xz100 Omnibook xt1000  Removal and Replacement  2-31 
  
 
 
Figure 2-22. Removing the Hinge Saddles 
Reassembly Notes 
• Make sure the posts on the underside of the hinge saddles line up with the openings in the bottom 
case, and that the holes in the front ends of the saddle fit over the alignment posts in the bottom 
case. 
Screw, M2×4mm 
Screws, 
M2.5x6mm (3) Screws, 
M2.5x6mm (2)  
						

							2-32  Removal and Replacement  HP Pavilion zt1100/xz100 Omnibook xt1000 
Removing the Motherboard or Bottom Case 
(HP Authorized Service Providers Only) 
Required Equipment 
• #0 Phillips screwdriver. 
When Installing a New Motherboard 
Before replacing the motherboard, you must (if possible) electronically store the motherboard’s serial 
number and service ID for transfer to the new motherboard. 
1.  Exit Windows and boot to a DOS prompt. 
2.  Run ESN.EXE from one of these sources: 
• On a factory software installation, change to the \hp\drivers\hputils directory and type esn at 
the prompt. 
• Otherwise, copy \hp\drivers\hputils\ESN.EXE from the Recovery CD, then run it on the 
notebook. 
3.  Store the serial number and service ID as directed. 
Removal Procedure 
1.  Unplug the AC adapter, if present, and remove the battery.  
2.  Remove these additional assemblies: 
• Battery (page 2-4). 
• Plug-in module (page 2-5). 
• Hard disk drive (page 2-6). 
• Keyboard cover (page 2-9). 
• Keyboard (page 2-11). 
• SDRAM modules (page 2-13). 
• Mini-PCI card (page 2-16). 
• Display assembly (page 2-18). 
• Fan and heatsink (page 2-22). 
• CPU module (page 2-25). 
• Top case (page 2-27). 
• Hinge saddles (page 2-30). 
3.  Remove the retaining screws from the hard disk drive guide, and lift the guide off of the 
motherboard. 
4.  Remove both retaining screws from the motherboard.  
						

							HP Pavilion zt1100/xz100 Omnibook xt1000  Removal and Replacement  2-33 
5.  Lift the front edge of the motherboard slightly, then carefully lift the motherboard forward and out 
of the bottom case. 
  
 
 
Figure 2-23. Removing the Motherboard 
Reassembly Procedure 
• When reinstalling the motherboard, see “Reinstalling the Motherboard” on page 2-34. 
• When reinstalling the bottom case, see “Replacing the Bottom Case” on page 2-35. 
Screws, M2×4mm (2) 
Screws, 
M2.5x6mm (2) 
Screws, 
M2.5x6mm (2)  
						

							2-34  Removal and Replacement  HP Pavilion zt1100/xz100 Omnibook xt1000 
Reinstalling the Motherboard 
Reassembly Procedure 
1.  Insert the I/O connectors through their openings in the bottom case, then lower the motherboard 
into place. 
2.  Make sure the PC card eject button fits into its slot in the bottom case. 
3.  Make sure the alignment posts in the bottom case—near the CPU module and PC card guide—fit 
through the corresponding openings in the motherboard. 
When Installing a New Motherboard 
After installing a new motherboard, you must electronically transfer to it the serial number and service 
ID from the previous motherboard. 
1.  Exit Windows and boot to a DOS prompt. 
2.  Run ESN.EXE from the same source you used when saving the serial number and service ID from 
the previous motherboard: 
• On a factory software installation, change to the \hp\drivers\hputils directory and type esn at 
the prompt. 
• Otherwise, copy \hp\drivers\hputils\ESN.EXE from the Recovery CD, then run it on the 
notebook. 
3.  Install the serial number and service ID. 
• If you are prompted for the serial number, type the serial number shown on the bottom of the 
case. 
• If a serial number has already been stored, you must call an HP support center to change it (see 
page vi).  
						

							HP Pavilion zt1100/xz100 Omnibook xt1000  Removal and Replacement  2-35 
Replacing the Bottom Case 
Installation Procedure 
1.  Install a new Microsoft Product ID label. 
2.  Transfer the old serial number label and install a new overlay, or create a new serial number label 
using the steps on the following page. 
3.  If you need to install or replace the docking doors or PCMCIA doors, refer to the figures below. 
  
 
 
Figure 2-24. Installing the Docking Doors 
  
 
 
Figure 2-25. Installing the PCMCIA Doors  
						

							2-36  Removal and Replacement  HP Pavilion zt1100/xz100 Omnibook xt1000 
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, or from 
http://www.mcd.hp.com. Store it with other Word templates on a PC connected to a laser printer. The 
latest version includes fields for warranty period and manufacturing location. 
1.  Open a new document based on the serial label template. 
2.  Enter the information from the old serial label, and print the new label on plain white paper. The 
new label does not have barcodes. 
3.  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. 
4.  While holding the paper label in place, attach a serial label overlay into the outer recess. It covers 
and protects the serial label. 
 
HP Serial Number (S)TW711A1234  1YR 
(1P) F2072 W   EA   MFG# TW711A1234 
Made in Taiwan 
Figure 2-26. Example of Serial Number Label  
						

							HP Pavilion zt1100/xz100 Omnibook xt1000  Removal and Replacement  2-37 
Removing Notebook Components 
(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 the assemblies and follow the additional steps given in the table below. 
Table 2-5. Removing Notebook Components 
Component Removal Procedure Additional Steps 
Antenna, Bluetooth See page 2-20.   
Antenna, wireless See page 2-20. 
 
Bezel, display See page 2-20. 
 
Card, mini-PCI See page 2-16. 
 
Case, bottom See page 2-32. 
 
Case, top See page 2-27. 
 
Cover, keyboard See page 2-9.   
Display assembly See page 2-18.   
Doors, docking Plug-in module (page 2-5). 
Hard disk drive (page 2-6). 
Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
SDRAM modules  
(page 2-13). 
Mini-PCI card (page 2-16). 
Display assembly 
(page 2-18). 
Fan and heatsink 
(page 2-22). 
CPU module (page 2-25). 
Top case (page 2-27). 
Hinge saddles 
(page 2-30). 
Motherboard (page 2-32). See Figure 2-24 on page 2-35.  
						

							2-38  Removal and Replacement  HP Pavilion zt1100/xz100 Omnibook xt1000 
Component Removal Procedure Additional Steps 
Doors, PCMCIA Plug-in module (page 2-5). 
Hard disk drive (page 2-6). 
Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
SDRAM modules  
(page 2-13). 
Mini-PCI card (page 2-16). 
Display assembly 
(page 2-18). 
Fan and heatsink 
(page 2-22). 
CPU module (page 2-25). 
Top case (page 2-27). 
Hinge saddles 
(page 2-30). 
Motherboard (page 2-32). See Figure 2-25 on page 2-35. 
Fan See page 2-22. 
 
Guide, hard disk drive Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
Display assembly 
(page 2-18).  
Top case (page 2-27). Remove the retaining screws, and lift the guide off of 
the motherboard.  
Heatsink See page 2-22. 
 
Keyboard See page 2-11. 
 
Module, CPU See page 2-25. 
 
PCA, CD player Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
Display assembly 
(page 2-18).  
Top case (page 2-27). Remove both retaining screws, and lift the PCA out of 
the top case.  
Reassembly Notes: Make sure the alignment holes in 
the PCA (at the left end and above the right screw) fit 
over the corresponding posts in the top case. Make 
sure the PCA’s ribbon cable is securely connected to 
the PCA. 
PCA, inverter See page 2-20.   
PCA, motherboard See page 2-32. 
 
PCA, USB Keyboard cover 
(page 2-9). 
Keyboard (page 2-11). 
Display assembly 
(page 2-18).  
Top case (page 2-27). 
Hinge saddle, left 
(page 2-30). Carefully lift the PCA off of its connector and out of the 
notebook. 
Reassembly Notes: Make sure the headphone jack 
fits through its opening in the bottom case, and that 
the PCA is set securely on its connector.