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Table
4-2.
Operator Troubleshooting Chart
(cont'd)
TROUBLE
PROBABLE CAUSE
REMEDY
Power applied/data
sent -printer does
not print.
Cable between input de-
vice and printer not
connected
Check that connectors at
both ends of data input
cable are properly
connected to mating
connectors.
ONLINE/OFFLINE switch
in
OFFLINE position.
Place switch
in
ONLINE
position.
4.4
FUSE REPLACEMENT
4.4.1
REMOVAL OF COVERS
In
order to replace fuse
F1,
and to troubleshoot and repair the
printer,
it is
necessary to remove
the covers.
Refer to Figure
4-1
and
proceed
as follows:
1
Place POWER ON/OFF switch
in
OFF position and disconnect
ac input
plug from power source.
Disconnect data input connector.
2.
Remove top cover by lifting rear edge until latches are clear of
body cover and then slide cover towards rear
of printer to
dis-
engage front clips.
3.
Unthread the ribbon from the print head carriage assembly, then
take up slack in ribbon by turning ribbon drive roller knob
clockwise.
4.
Release the two Phillips-head screws
at the
front of the printer
and the three
Phillips-head screws
at the rear of the
printer.
5.
Gradually raise
the
body cover until there
is
enough room to reach
under the front of the cover.
6.
Reach under the body cover and disconnect the ribbon drive motor
cable connector from connector J002 on the logic PC board.
7.
Keep
the
body cover level to prevent ribbon from unthreading and
set cover to one side.
8.
To reassemble printer, reverse procedure.
4-4
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