Digi Sm320 Service Manual

To wipe all PLUs, custom label formats, and restore factory defaults: Turn off the main power switch. Press and hold RE_ZERO and the 0 or CLEAR key.

The Digi SM-320 is a high-performance PC-based weighing error-free scale and label printer widely used in supermarkets, deli counters, and manufacturing units. Accessing and understanding the is essential for technicians and business owners to minimize downtime, maintain weighing accuracy, and extend the lifespan of the machine.

Features a high-reliability thermal head printer and a specially designed mechanism for easy paper handling without requiring cassette-style loading. Initialization & Setup:

Complete Guide to the DIGI SM-320 Service & Operation Manual digi sm320 service manual

: Open the side panel tray and flip the print head panel switch. Ensure the label roll is guided correctly through the path and secured tightly.

on the numeric keypad. This allows you to view and adjust "SPEC" (specification) settings. System Reset : For a full reset, navigate to , then hold the key and enter 3, 7, 5, 2 Hardware Compatibility DIGI SM-320

Pull outward gently on the right-hand chassis cover to access the label spindle compartment. To wipe all PLUs, custom label formats, and

Cause : The optical gap sensor is obstructed by paper dust or misaligned with the label backing paper liner.

If no output – check MAX3232 UART driver.

The Digi SM-320 is a rugged, highly reliable digital PC-based printing scale widely used in supermarkets, butcher shops, and grocery stores. Because these machines operate in high-traffic commercial environments, regular calibration, troubleshooting, and parts replacement are necessary to prevent downtime. Accessing and understanding the is essential for technicians

Provide the exact symptoms (e.g., “Power LED on but no cellular registration” or “Serial port outputs garbage”), and I can give targeted steps from the typical SM320 service logic.

Ensure the weigh pan is completely empty and clean. Press the [TARE] or [REZERO] key to log the dead-weight value.

Given the SM320’s age (last manufactured ~2012), consider:

The SM-320 will display specific error codes when something goes wrong. The service manual interprets these codes: