"backplane board") and the system board (also known as the "interconnect
board") each have a printed description of where the drive cables connect.
Each drive cable also has a printed description, a Compaq spare part
number, and a Compaq assembly part number. Refer to Section 9.15 for more
information on drive cable locations.
Power Switch Cable Harness
The power switch cable harness [7] (Figure 6-15) runs from the power switch
[8] to the harness extension cable on the system board [1] and includes the
following:
o Power switch and its soldered cable
o Cables for the computer status sensor
o Connectors for the PCMCIA card sensor (emitter and receiver)
o Power and hard drive LEDs (integrated into the power switch board)
Power Switch
The momentary type power switch [8] (Figure 6-15) provides power to the
main expansion base circuits if it is pressed after a computer is docked
(refer to "Power Supply" in this section).
The power switch is connected to the power switch cable harness and is
composed of the power switch board and small mechanical parts. The small
mechanical parts (button, spring, frame, and light pipes) can also be
replaced separately using parts from the Miscellaneous Small Mechanical
Parts Kit (Table 8-8).
NOTE: The power switch board is integrated into the power switch cable
harness. To replace the power switch board, the power switch cable
harness must be replaced (refer to Section 9.17).
Eject Switch Cable Harness
The eject switch cable harness [3] runs from the eject switch [4] to the
harness extension cable on the system board [1] (Figure 6-15) and includes
the following:
o Eject switch and its soldered cable
o Keylock switch and its soldered cable
o Battery charger LED (integrated into the eject switch board)
Eject Switch
The momentary type eject switch [4] (Figure 6-15) undocks the computer from
the expansion base after certain conditions are met (Appendix D).
The eject switch is connected to the eject switch cable harness and is
composed of the eject switch board and small mechanical parts. The small
mechanical parts (button, spring, frame, and light pipes) can also be
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