Kyocera FS1750 - Manual (Page 112)

C.2. RS-232C/RS-422A Interface
C-5
RS-422A interface
The serial interface of this printer was set to RS-232C mode before leaving the factory. However, by changing
the jumper connector on the main circuit board, the interface can be changed to RS-422A mode.
In RS-232C mode, the printer can be connected to a personal computer (or similar device) equipped
with an RS-232C serial interface. (The serial interface is set to RS-232C before leaving the factory.)
In RS-422A mode, the printer can be connected to a personal computer (or similar device) equipped
with an RS-422A serial interface.
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The changing of the main circuit board jumper connector should be carried out only by a Kyocera
authorized dealer or Kyocera certified technician. Kyocera shall not be liable for damage due to
improper changing of this main circuit board jumper connector.
Removing the Main Circuit Board
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The following instructions are intended for the technician only.
Notes on Handling the Main Circuit Board
Protect the electronics by taking these precautions:
❒ Before touching the main circuit board, touch a water pipe or other large metal object to discharge yourself
of static electricity. While doing the work, it is recommended that you wear an antistatic wrist strap.
❒ Touch the main circuit board only by the edge.
Withdrawing the Main Circuit Board from the Printer
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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.
Power OFF (O)