HP ProBook 4320s Notebook PC HP ProBook 4321s ... - Warranty Life

Modem module cableNOTE: The modem module cable with RJ11 connector is included in the Cable kit on page 34, partnumber 599525-001.Before removing the modem module cable, follow these steps:1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turnthe 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 outletand then unplugging the AC adapter from the computer.4. Remove the battery (see Battery on page 51).5. Remove the following components:a. Switch cover (see Switch cover on page 53)b. Keyboard (see Keyboard on page 55)c. Optical drive (see Optical drive on page 59)d. Speakers (see Speakers on page 62)e. Palm rest (see Palm rest on page 66)f. Hard drive (see Hard drive on page 68)g. Display assembly (see Display assembly on page 83)h. Top cover (see Top cover on page 91)i. System board (see System board on page 95)j. USB connector board and cable (see USB connector board on page 97)Remove the modem cable.1. Position the computer right-side up with the front toward you.2. Release the modem RJ11 connector from the base enclosure clips (1).Component replacement procedures 99