: If the current measurements aren't working, the internal fuse may be blown. Access the battery/fuse compartment by removing the screw on the back.
: The manual explicitly states that internal circuit boards are not serviceable and should not be disassembled by the user .
There are several ways to access the Equus 4320 manual PDF:
The manual provides clear instructions for device longevity, specifically regarding . For instance, a low-battery symbol on the LCD alerts the user to replace the internal 1.5V AA batteries to ensure measurement accuracy. Its handheld, rugged design often includes protective rubber guards and a built-in stand, making it a "valuable tool for professionals seeking precise test and measurement results" in industrial or home environments.
: It can measure AC/DC voltage, DC current, resistance, diodes, and continuity.
Used to test if a wire is broken, if a fuse is blown, or if a switch is functioning properly. : Connect leads to COM and .