HP Pavilion Zt1000 Xz300 Service Manual

							Technology Code ID)  Removal and Replacement  2-19 
  
 
 
Figure 2-15. Removing the Display (2) 
Reassembly Notes 
• While installing the hinge screws, support the display so that it remains approximately flat. 
• Make sure the cable fits into its slot in the bottom case, and reinsert the cable into the retaining clip 
near the left display hinge. 
• Make sure the tabs on the left side of the left speaker fit between the corresponding tabs in the 
bottom case, and the speaker wires fit through their notch in the bottom case. 
Screw, M2×4mm 
Screws, 
M2×4mm (3)  
						

							2-20  Removal and Replacement  Technology Code ID) 
Removing Display Assembly Components 
(HP Authorized Service Providers Only) 
Note 
This procedure describes how to remove the display bezel, the inverter PCA, and (if present) the 
wireless antenna. Although these components can be replaced individually, in many cases it is 
preferable to replace the display assembly as a unit. 
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). 
• Display assembly (page 2-18). 
3.  Use a screwdriver or similar object to carefully pry the screw covers from the display bezel. 
4.  Remove the four screws from the display bezel. 
5.  Beginning at the top center of the display, carefully pry up the inner edge of the bezel with thumbs 
and fingers. Work your way around the inside edge to unsnap the latches, then remove the bezel 
from the display. 
6.  Remove the retaining screw from the inverter PCA. Carefully turn the PCA over, unplug the cable 
from the left end, and disconnect the wires extending from its right end. 
7.  If present, remove both retaining screws from the Bluetooth or 802.11b antenna, and remove the 
antenna from the display.  
						

							Technology Code ID)  Removal and Replacement  2-21 
  
 
 
Figure 2-16. Removing Display Assembly Components 
Reassembly Notes 
• Make sure the alignment hole in the inverter PCA fits over the corresponding post in the display 
case. 
• Make sure the alignment hole in the wireless antenna fits over the corresponding post in the display 
case. 
• Set the bezel in place on the display, then work your way around the bezel, firmly snapping the 
bezel latches shut. 
• The rounded screw co 
• vers go on the screws at the top of the display bezel, and the flat covers go on the screws at the 
bottom of the bezel. 
Screw, M2×4mm 
Screws,  
M2×4mm (2) 
Screws,  
M2×4mm (2) 
Screws, 
M2.5x6mm (4) 
Inverter PCA 
Bluetooth antenna 
802.11b 
antenna  
						

							2-22  Removal and Replacement  Technology Code ID) 
Removing the Fan and Heatsink 
(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). 
3.  Remove the retaining screw from the right speaker. Disconnect the speaker wires from the 
motherboard, and lift the speaker out of the notebook. 
4.  Disconnect the fan wires from the motherboard. 
5.  Remove both retaining screws from the fan. 
6.  Lift the fan out of the notebook. 
 
 Caution 
  Do not spin the fan blades with your finger, or you could damage the fan’s bearings. 
 
7.  Remove the heatsink’s four retaining screws (with springs attached).  
8.  Lift the heatsink out of the notebook.  
						

							Technology Code ID)  Removal and Replacement  2-23 
  
 
 
Figure 2-17. Removing the Fan and Heatsink 
 
Caution 
Be careful not to touch the upper surface of the CPU module, or you could damage it. 
 
 
 
 
Screws, M2×4mm (2) 
Screw, 
M2.5x6mm 
Screws, heatsink 
(with springs) (4) 
Screw, 
M2.5x8mm 
  
						

							2-24  Removal and Replacement  Technology Code ID) 
Reassembly Notes 
• Make sure the fan wires are not pinned under the fan, and is securely plugged into its socket. 
• If present, make sure the wireless cables are not trapped under or behind the fan, or beneath the 
cooling fins. 
• Insert the cooling fins into the opening in the bottom case, then set the heatsink onto its standoffs. 
• Tighten the heatsink screws in the order indicated by the numbers on the heatsink. 
• Make sure the upper surface of the heatsink is clean, and install a new thermal pad. Be careful not 
to scratch the upper surface of the pad, and make sure the pad lies flat on the heatsink. 
 
 
Figure 2-18. Installing a New Thermal Pad  
						

							Technology Code ID)  Removal and Replacement  2-25 
Removing the CPU Module 
(HP Authorized Service Providers Only) 
Required Equipment 
• #0 Phillips screwdriver. 
• Small flat-blade screwdriver. 
Removal Procedure 
 
Caution 
Be careful not to touch the upper surface of the CPU module. Handle it only by its edges, or you 
could damage it. 
 
 
 
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). 
• Fan and heatsink (page 2-22). 
3.  Carefully insert the tip of a flat-blade screwdriver in the CPU module lock mechanism, and turn the 
screwdriver a few degrees counterclockwise until the mechanism clicks into its OPEN position. 
(The CPU socket moves slightly to the left when this happens.) 
Grasp the CPU module by its edges, and carefully lift it straight up and off of its socket.  
						

							2-26  Removal and Replacement  Technology Code ID) 
  
 
 
Figure 2-19. Removing the CPU Module 
Reassembly Notes 
• Carefully reinsert the module into its socket. Make sure the module is fully seated, and that none of 
its pins are bent or otherwise damaged. 
• Carefully insert the tip of the flat-blade screwdriver in the CPU module lock mechanism, and turn 
the screwdriver a few degrees clockwise until the mechanism clicks into its LOCK position. (The 
CPU socket moves slightly to the right when this happens.)  
						

							Technology Code ID)  Removal and Replacement  2-27 
Removing the Top Case 
(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: 
• Plug-in module (page 2-5). 
• Hard disk drive (page 2-6). 
• Keyboard cover (page 2-9). 
• Keyboard (page 2-11). 
• Display assembly (page 2-18). 
3.  Remove the retaining screws from the bottom of the notebook. 
4.  Remove the screws from just inside the hard disk drive compartment, and just inside the plug-in 
module compartment. 
  
 
 
Figure 2-20. Removing the Top Case Retaining Screws 
Screws, 
M2×4mm (2) 
Screw, 
M2×4mm Screws, 
M2.5×6mm (2)  
  
Screws, 
M2.5x6mm (6) 
Screw, 
M2.5×6mm (1)  
   
						

							2-28  Removal and Replacement  Technology Code ID) 
5.  Disconnect the touch pad cable and the CD player PCA cable from the motherboard. 
6.  If present, remove the wireless cables from their slot in the top case. 
7.  Remove the retaining screws from the top case. 
8.  Remove the retaining screw from the right speaker, disconnect its wires from the motherboard, and 
lift the speaker out of the notebook. 
9.  Raise the back of the top case, then gradually loosen it, moving around the edges of the case 
toward the front of the notebook. 
 
Caution 
W hen removing the top case, be careful not to pull on the cable that connects the CD player PCA 
in the top case to the notebook. 
 
10.  Carefully lift the top case forward and off of the notebook. 
11.  Disconnect the volume control PCA cable from the motherboard (if present).