Led Problems - Compaq LTE Elite Maintenance And Service Manual

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The system locks up
when a backup to tape
is attempted.
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Table 7-5. LED Problems
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Problem
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An LED doesn't come on
or is dim.
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The signal and/or power
cable of the new device is
defective.
Switch 3 on the vertical
circuit board is
incorrectly set.
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The signal or power cable
is not securely connected
to the tape drive.
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The power and/or signal
cable connected to the
drive is defective.
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The tape drive is not
supported by the Compaq
internal controller.
Probable Cause
The light pipe for the LED
is not installed properly.
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The LED is defective.
Determine if the
signal and/or power
cable is defective
by connecting another
cable.
Change Switch 3 to
the tape/diskette
drive installed
position (the
on/closed position).
Ensure that the
cables are properly
and securely
connected to the tape
drive.
Determine if the
power and/or signal
cable is defective
by connecting another
cable.
Call the manufacturer
of the tape drive to
verify that it is
supported by the
Compaq controller.
Recommended Action(s)
Ensure that the light
pipe is even with the
outside surface of
the expansion base
and reinstall or
replace it if
necessary.
Determine if the LED
is defective by
completing the
following steps:
1. Remove the
appropriate switch
(power switch or
eject switch *)
from the top cover
of the expansion
base, but do not
disconnect the
cable harness.
2. Remove the switch
board from the
rest of the