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File No.
960-010
2.4 SYSTEM BOARD PROBLEM ISOLATION PROCEDURES
CAUTION:
Before carrying out any of these procedures, make
sure that the FDD is empty.
Performing these procedures
with a floppy disk in the FDD may result in loss of data.
This section describes how to determine whether or not the
system board is defective.
Start with PROCEDURE 1 and
continue with other procedures as instructed.
The
procedures described in this section are:
PROCEDURE 1:
Message Check
PROCEDURE 2:
Printer Port LED Check
PROCEDURE 3:
Test Program Execution
PROCEDURE
4:
System Board Replacement
2-9
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