Modem Module - HP 321 - Notebook PC Maintenance And Service Manual

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
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
5. Remove the service door (see
6. Remove the hard drive (see
7. Remove the optical drive (see
8. Remove the fan (see
9. Remove the palm rest (see
10. Remove the keyboard (see
11. Remove the top cover (see
12. Remove the system board
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.
Battery on page 49).
Service door on page
Hard drive on page
Optical drive on page
Fan on page 60).
Palm rest on page
Keyboard on page
Top cover on page
(seeSystem board on page
49).
52).
58).
64).
69).
73).
92).
Component replacement procedures
Spare part number
510100-001
510100-011
99