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2.4 SYSTBII PCB ISOLATION PROCEDURES
This section describes how to determine whether the system PCB
is defective or not.
The procedures below are outlined in the
following
pages.
They
should
be
performed
in
the
order
indicated.
PROCEDURE 1:
Message Check
PROCEDURE
2:
Printer Port LED Check
PROCEDURE
3:
Jumper Straps Check
PROCEDURE
4:
Test Program Execution
PROCEDURE 5:
System PCB Replacement
NO'l'E:
Before carrying out any of
these procedures,
make sure
that there is not a floppy disk in the FDD and the HOD
switch is off.
2-10
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