North Star DIMENSION Service Manual page 149

DIAGNOSTICS
(cont.) Error Screens and Codes
Error Code The error code matrix indicates possible causes for the
Matrix
appearance of an error code. There will usually be at least
two items that you should investigate. The items will
normally be DIMENSION hardware subsystems, but problems
may also be caused by printer errors or misuse of system
commands by one or more operators. Read the following
list for a complete description of each error causing
subsystem before you begin to troubleshoot an error code.
y"r Central Board - the problem may be located in the
central board hardware. This may include a failure of
circuit board components or failure of interfaces between
the central board and other central module subassemblies.
Workstation Board - the problem may be located in the
workstation board hardware. This may include a failure
of circuit board components, incorrect thumbwheel switch
settings, or failure of interfaces (including the
workstation cable and its connector box) between the
workstation board and other subassemblies.
^r Bus Board - the problem may be located in the bus PCB
hardware. This may include a failure of circuit board
components or failure of interfaces between the bus PCB
and other circuit boards.
^Y Diskette Drive - the problem may be located in the
diskette drive hardware. This may include failures of the
diskette drive read/write head, the controller board, etc.
^r Diskette Media - the problem may be located on the
diskette. This may include flaws on or loss of data from
the diskette or use of an improper diskette.
Fixed Drive - the problem may be located in the fixed
disk drive hardware. This may include failures of the
fixed disk drive read/write heads, the controller board,
etc.
DIMENSION Service Manual 3-37