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Withdrawing the Main Circuit Board from the Printer
Be sure to remove the memory card first if inserted in the printer’s memory
card slot.
Withdraw the main circuit board completely from the printer as follows:
1.
Turn the printer’s power off. Unplug the
printer’s power cable and disconnect the
printer from the host computer.
2.
Remove the three screws from the
printer’s rear cover.
3.
Pull the main circuit board all the way out
of the printer.
Before pulling the main board out,
clean an area on the table, etc., at the
back of the printer’s rear panel. For-
eign objects, accidentally sticking to
the back of the main board, can
cause serious damage to the printer.
Changing the Jumper Connector
1.
Carefully remove the jumper connector
from the main circuit board, and recon-
nect to the pin position shown in the dia-
gram.
2.
After completion of the above, return the main circuit board to the printer by reversing
the procedure followed when removing it.
Jumper Connector
Power OFF ( )
Jumper Connector
C.2. RS-232C/RS-422A Interface
C-7