HP ProBook 6455b, 6555b, 6450b and 6550b Notebook PCs Maintenance and Service Guide

Modem module cable
NOTE: The modem module cable is included in the Cable Kit, spare part numbers 613352-001.
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, 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 74).
5. Remove the following components:
a. Bluetooth module (see
Bluetooth module on page 76)
b. Mass storage device (see
Mass storage device on page 78)
c. Optical drive (see
Optical drive on page 88)
d. Keyboard (see
Keyboard on page 90)
e. Switch cover (see
Switch cover on page 97)
f. Fan (see
Fan on page 102)
g. Heat sink (see
Heat sink on page 104)
h. Palm rest (see
Palm rest on page 100)
i. Display assembly (see
Display assembly on page 108)
j. Top cover (see
Top cover on page 120)
k. ExpressCard assembly (see
ExpressCard assembly on page 125)
l. Speaker assembly (see
Speaker assembly on page 129)
m. Card reader/USB board (see
Flash media/1394 board on page 132)
n. System board (see
System board on page 134)
Remove the modem module cable:
1. Release the RJ-11 connector (1) from the clip built into the base enclosure.
2. Release the modem module cable from the clips (2) and routing channel built into the base
enclosure.
Component replacement procedures 141