4. In the logic testing mode, the measured voltage is
displayed in the LCD.
Battery and Fuse Replacement
NOTE: Do not operate the instrument or connect the test
lead or probe to any circuit with the rear cover open.
1. Remove the screw and open the battery door. Replace
the old batteries or the blown fuse with the same type.
Fuse: 800mA/250V fast blow type
Battery: Two 1.5V AAA or UM-4 type