| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication terminal unit capable of easily confirming all faults and dealing the faults even when a plurality of the faults occurs when the area of a display means to display the faults cannot be assured in a large value. SOLUTION: The communication terminal unit displays the number of the faults which can be displayed on the display means 7 when all the faults detected by a fault detecting means 1 cannot be displayed on the display means 7, and displays the effect that the residual faults exist.
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