compaq notebook evo n150 series User Manual
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Removal and Replacement Procedures Maintenance and Service Guide5–25 2. Disconnect the fan cablefrom the system board (Figure 5-17). 3. Remove the modem cable from the clip in the heat sink . 4. Remove the four black M2 × 4.0 screws and the pewter M2.5 × 7.0 screw that secure the heat sink to the base enclosure. 5. Remove the heat sink. Figure 5-17. Removing the Heat Sink The fan and heat sink are spared as one assembly. Do not remove the fan from the heat sink. Reverse the above procedure to install the heat sink.
5–26Maintenance and Service Guide Removal and Replacement Procedures 5.15 Infrared Board 1. Prepare the computer for disassembly (Section 5.3) and remove the following components: a. Hinge covers (Section 5.5) b. Keyboard (Section 5.6) c. Display (Section 5.7) d. EMI shield (Section 5.8) e. Top cover (Section 5.9) Infrared Board Spare Part Number Information Infrared board 239045-001
Removal and Replacement Procedures Maintenance and Service Guide5–27 2. Disconnect the infrared board cablefrom the system board (Figure 5-18). 3. Remove the infrared board cable from the metal clip through which it is routed. 4. Remove the black M2 × 4.0 screw that secures the infrared board to the base enclosure. 5. Lift the infrared board out of the base enclosure. Figure 5-18. Removing the Infrared Board Reverse the above procedure to install the infrared board.
5–28Maintenance and Service Guide Removal and Replacement Procedures 5.16 System Board There are 11 screws and screwlocks in five different sizes that must be removed and replaced when replacing the system board. Make special note of each screw size and location when removing and replacing screws. 1. Prepare the computer for disassembly (Section 5.3) and remove the following components: a. Hinge covers (Section 5.5) b. Keyboard (Section 5.6) c. Display (Section 5.7) d. EMI shield (Section 5.8) e. Top cover (Section 5.9) f. Infrared board (Section 5.15) 2. Turn the base enclosure top side up with the rear panel facing you. System Board Spare Part Number Information System boards (includes 64 MB SDRAM) 800 MHz Intel Pentium III 700 MHz Intel Celeron239051-001 239050-001
Removal and Replacement Procedures Maintenance and Service Guide5–29 3. Remove the six 5.0-mm screwlocks from the rear panel of the computer (Figure 5-19). Figure 5-19. Removing the System Board Screwlocks
5–30Maintenance and Service Guide Removal and Replacement Procedures 4. Position the base enclosure so the front faces you. 5. Remove the following screws, as illustrated in Figure 5-20: two black M2 × 14.5 screwsthat secure the PC Card assembly to the base enclosure black M2.5 × 4.5 screwnear the USB connector that secures the system board to the base enclosure black M2.5 × 4.0 screwthat secures the modem connector/cable to the base enclosure blackM2×4.0screwnear the display connector that secures the system board to the base enclosure Figure 5-20. Removing the System Board Screws
Removal and Replacement Procedures Maintenance and Service Guide5–31 6. Lift up the front edge of the system boarduntil the board and the battery connector are clear of the base enclosure (Figure 5-21). ÄCAUTION:When removing the system board, make sure the battery connectoris carefully routed out of the openingin the base enclosure in which it rests. Failure to follow this caution can result in damage to the battery connector. Figure 5-21.Lifting the System Board
5–32Maintenance and Service Guide Removal and Replacement Procedures 7. Slide the system board out of the base enclosure at an angle (Figure 5-22). Figure 5-22. Removing the System Board Reverse the above procedure to install the system board.
Removal and Replacement Procedures Maintenance and Service Guide5–33 5.17 PC Card Assembly 1. Prepare the computer for disassembly (Section 5.3)) and remove the following components: a. Hinge covers (Section 5.5) b. Keyboard (Section 5.6) c. Display (Section 5.7) d. EMI shield (Section 5.8) e. Top cover (Section 5.9) f. Infrared board (Section 5.15) g. System board (Section 5.16) 2. Turn the system board bottom side up with the PC Card slot opening facing you. PC Card Assembly Spare Part Number Information PC Card assembly 239040-001
5–34Maintenance and Service Guide Removal and Replacement Procedures 3. Peel back the shielding tape that covers the right PC Card screw (Figure 5-23). 4. Remove the two silver M2 × 5.0 screws that secure the PC Card assembly to the system board. 5. Turn the system board top side up with the PC Card slot opening facing you. 6. Lift up the back edge of the PC Card assembly to disconnect it from the system board . 7. Remove the PC Card assembly. Figure 5-23. Removing the PC Card Assembly Reverse the above procedure to install the PC Card assembly.