· The receive data (RD) line receives the characters.
· The message buffer stores the characters.
· The data prints.
· The test runs until the SELECT switch is pressed or the printer is powered OFF.
· To restore the printer to normal operation, power OFF the printer.
· Press and hold the MODE switch while powering ON the printer. The printer will be in Menu Mode.
· Press GROUP until you access the desired group (Serial Interface). Each time you press GROUP, the
printer will print the current group.
· Press ITEM until you access the desired item (Diagnostic Test).
· Press SET until you access the desired setting (NO).
· Press MODE to record the changes and return to Print Mode. The MENU lamp will go out and the SEL
lamp will light.
Serial Loopback Plug Diagram
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
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