replaced separately using parts from the Miscellaneous Small Mechanical
Parts Kit (Table 8-8).
NOTE: The eject switch board is integrated into the eject switch cable
harness. To replace the eject switch board, the eject switch cable
harness must be replaced (Section 9.17).
Keylock Switch
The keylock switch [2] (Figure 6-15) is connected to the eject switch cable
harness. The keylock switch is actuated by the keylock assembly and is
closed when the keylock is in the locked position (refer to "Keylock
Assembly and Override Blocker" in this section). When the microcontroller
detects a closed keylock switch, it prevents power from being connected to
the docking mechanism, thus preventing the computer from docking or
undocking.
The keylock switch is integrated into the eject switch cable harness. To
replace the keylock switch, the eject switch cable harness must be
replaced.
PCMCIA Card Sensor (Emitter and Receiver)
The PCMCIA card sensor is a light curtain type, with two parts: an emitter
board [5] and a receiver board [6] (Figure 6-15). The card sensor detects
the presence of a PCMCIA card or card cable that extends beyond the safe
limits of the PCMCIA slot. When the sensor detects that the spring-loaded
PCMCIA door is open, it does not allow the computer to undock, thereby
preventing damage to the PCMCIA card and connector.
Refer to Appendix D for more information on undocking.
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