OPERATION EXPLANATION OF COMPONENTS 4-SYSTEM (1) Electric System (5) Depth Mode Indicator (2) Mode Selector Switch (6) Height Mode Indicator (3) Setting Switch (7) Offset Mode Indicator (4) Depth Display (8) Emergency Work Equipment Actuation Switch ELECTRIC SYSTEM If there is any abnormality in the 4-system line (interference prevention system and automatic work equipment control sys- tem), a warning signal is emitted, so stop the engine. The cause of the abnormality is displayed as an error code on the depth display, so check the condition. For details of the method of checking, see "OTHER TROUBLE (PAGE 3-133)".
When the engine is started or stopped with the starting switch at the ON position, the buzzer may sound and this lamp may light up momentarily, but this does not indicate any abnormality. MODE SELECTOR SWITCH This switch (2) is used to select the depth display 0 set mode, depth mode, height mode, or offset mode. 3-9