HP 625 Compaq 325 and 326 Notebook PCs HP 425 and 625 Notebook PCs - Maintenan - Page 107
Modem module
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Reverse this procedure to install the RTC battery. Modem module Description For use in all countries and regions except Australia and New Zealand For use only in Australia and New Zealand Spare part number 510100-001 510100-011 Before removing the modem module, follow these steps: 1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the computer on, and then shut it down through the operating system. 2. Disconnect all external devices connected to the computer. 3. Disconnect the power from the computer by first unplugging the power cord from the AC outlet and then unplugging the AC adapter from the computer. 4. Remove the battery (see Battery on page 48). 5. Remove the service door (see Service door on page 49). 6. Remove the hard drive (see Hard drive on page 51). 7. Remove the optical drive (see Optical drive on page 57). 8. Remove the fan (see Fan on page 59). 9. Remove the palm rest (see Palm rest on page 64). 10. Remove the keyboard (see Keyboard on page 67). 11. Remove the top cover (see Top cover on page 71). 12. Remove the system board (seeSystem board on page 90). Remove the modem module: 1. Position the computer right-side up with the front toward you. 2. Remove the two Phillips PM2.5×3.0 screws (1) that secure the modem module to the system board. Component replacement procedures 97