Important Note: The Digi SM320 is a legacy (discontinued) industrial cellular terminal/server. Digi International no longer produces this model. Official service manuals are proprietary and not publicly hosted on Digi’s main site. This guide teaches you how to work with the manual, where to find remnants, and what procedures it contains.
While I couldn't find an official service manual, you can try searching for the following:
- 3 1/2-digit LCD display
- Measures DC voltage (200mV to 200V), AC voltage (200V to 750V)
- Measures DC current (200μA to 10A)
- Measures resistance (200Ω to 20MΩ)
- Continuity testing
- Diode testing
Securely connect the serial cables between the scale and the pole, ensuring the latches click.
- Exploded Views: The parts breakdown diagrams are fantastic. They clearly label every screw, spring, and seal, making reassembly easy if you have taken the unit apart.
- Schematics: For the SM-320 (which is an older, robust model), the circuit board schematics are usually included. This is vital if you are diagnosing power issues or sensor failures at the component level.
- Test Mode Instructions: The most valuable section for most users is the entry into the Test/Service Mode. The manual clearly explains how to jump specific pins or hold specific keys to enter calibration mode, which is impossible to guess without the document.
Common SM320 Issues Solved by the Service Manual
Let’s look at real-world scenarios where the Digi SM320 Service Manual saves the day.
uses the same thermal print head as the SM-100CS Plus and SM-5100, and its motherboard is compatible with the SM-5100 series, which may help when sourcing spare parts. servplus.ru Official Support