Compaq LTE Elite Maintenance And Service Manual page 211

---------------------------------------------------------------------------
The motor does not
engage but a beep is
emitted one second
after attempt to
dock.
---------------------------------------------------------------------------
* The keylock switch is integrated into the eject switch cable harness.
** The voltage outputs for the motor cable's red and white wires vary
according to the state of the motor, as follows:
When the motor is turning forward, the red wire is + 18V and the white
wire is 0V.
When the motor is turning backward, the red wire is 0V and the white
wire is + 18V.
When the motor is not turning, the red wire is + 18V and the white
wire is + 18.
===========================================================================
Problem
===========================================================================
The motor starts to
engage, but the
computer does not
completely dock and a
beep is emitted.
to dock in a non-Windows
environment (Section D.1).
The motor cable is loose
or disconnected.
--------------------------------------------------
The motor is bad.
--------------------------------------------------
The motor circuitry is
defective on the
expansion base system
board.
Probable Cause
There is physical
interference.
1. Verify that the
motor cable is
tightly connected
to the motor. If
not, tighten the
quick connects on
the cable with a
pair of pliers and
reconnect them.
2. Verify that the
motor cable is
connected firmly to
the expansion base
system board. If
the cable does not
connect firmly,
replace it.
Replace the docking
mechanism.
Verify that the
voltage outputs for
the motor cable are
proper. ** If the
outputs are not
proper, replace the
expansion base system
board.
Recommended Action(s)
Undock the computer
by pressing the eject
button. If the
computer does not
undock, remove the
computer using the
manual eject override
method (Section D.1),
and complete the
following steps as
required: