Kyocera FS-6900 User Manual page 146

C.2. RS-232C/RS-422A Interface
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 five 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. Foreign objects, acci-
dentally 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 figure.
2.
After completion of the above, return the
main circuit board to the printer by revers-
ing the procedure followed when removing
it.
C-6
Jumper Connector
Jumper Connector
Power OFF (O)