Option problems Action
An IBM option that
previously worked does not
work now.
Verify that all option hardware and cable connections are
secure.
If the option comes with its own test instructions, use
those instructions to test the option.
If the failing option is a SCSI option, verify that:
1. The cables for all external SCSI options are connected
correctly.
2. The last option in each SCSI chain, or the end of the
SCSI cable, is terminated correctly.
3. All external SCSI options are turned on. External SCSI
options must be turned on before the system is
turned on.
For more information, see your SCSI documentation.
If you cannot correct the problem, have the computer
serviced.
Parallel-port problems
Parallel-port problems Action
Parallel port cannot be
accessed.
Verify that:
1. Each port is assigned a unique address.
2. The parallel-port adapter, if you added one, is
properly installed and firmly seated. See “Chapter 5.
Installing options” on page 43 for instructions on
adding adapters.
If you cannot correct the problem, have the computer
serviced.
Serial-port problems
Serial-port problems Action
Serial port cannot be
accessed.
Verify that:
1. Each port is assigned a unique address.
2. The serial-port adapter, if you added one, is properly
installed and firmly seated. See “Installing adapters”
on page 53 for instructions on adding adapters.
If you cannot correct the problem, have the computer
serviced.
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