General Checkout (3550-002)
Overall Procedures
1. Test the computer alone, to make sure there is not a
problem with the computer before testing it with the
3550 Expansion Unit. If there is a problem with the
computer, solve it by referring to the information
supplied with the computer, then test the computer
with the 3550 Expansion Unit.
2. Have the external keyboard, mouse, parallel and
serial devices connected to the computer and test the
computer. If no problem exists, connect them to the
3550 Expansion Unit and test the 3550 Expansion
Unit with the computer installed.
3. When testing the 3550 Expansion Unit, use the
Diagnostic Diskette supplied with the 3550 Expansion
Unit.
a. Because the serial and parallel ports on the
computer are covered by the 3550 Expansion
Unit when the computer is installed on the 3550
Expansion Unit, answer “No” when you are
asked if a wrap plug is used.
b. Test the status indicators on the 3550 Expansion
Unit by using the system status indicator test of
the computer. The corresponding indicators on
the 3550 Expansion Unit turn on and off in the
test, except for the power-on indicator. This
power-on indicator does not turn off due to
hardware restriction.
4. If the user did not bring the computer with the 3550
Expansion Unit, use a properly working computer with
the 3550 Expansion Unit.
5. If the docking station serial number is below
97-C0001, and the computer has intermittent
problems that seem to go away when the computer is
reseated in the docking station, install the cover kit
(part number 66G9433).
Note: To check if the cover kit has already been
installed, look at the plug toward the left side
of the docking station (this plug connects to
the AC adapter port at the left-rear of the
computer). If the plug has a one-eighth inch
deep shoulder, the cover kit has already been
installed. If the plug has a one-quarter inch
deep shoulder, the cover kit has not yet been
installed.
6. If the diagnostics of the following SCSI devices fail or
stop, suspect that the diagnostic programs are down
level before replacing SCSI devices.
SCSI Tape Drive
(error code = 0211XXXX)
SCSI CD-ROM Drive
(error code = 0215XXXX)
322 IBM Mobile Systems HMM - Volume 1
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