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C.2. RS-232C/RS-422A Interface
C-7
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 reconnect
to the pin position shown in the diagram.
2. After completion of the above, return the main circuit board to the printer by reversing the
procedure followed when removing it.
Power OFF
(O)
Jumper Connector
Jumper Connector