Sharp JW-20CM User Manual page 166

Other cases
• Check the switches of the JW-20CM (see check item)
• Check optional cable of PC (The JW-20CM does not operate normally without an optional cable.)
• Check cable and connector (see check item)
• Check error code
[Switches required check in the JW-20CM]
① Station number (STA NO.)
② Mode switch (MODE)
③ Termination resistance switch (LT)
④ Shield ground switch (LG)
If there are errors in the station number and the mode switch, change the setting with the power
OFF, and then turn ON the power.
[Check items of cables and connectors]
① No looseness or removal of connectors (turn the connector right until it completely locks).
② Connectors are appropriately fixed on the cables (When any faults such as extrusion of pins or
connector being easily removed by pulling, reinstall these connectors.)
③ Wiring conditions are appropriate (See chapters 6 and 7).
④ Not too long branch lines (shorter than 400 mm).
⑤ Termination resistance are correctly connected.
(Turn "ON" the termination resistance switch of the termination stations or install a termination
tool.)
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