The SM-320 is a high-speed thermal printing scale available in Options include
202 x 32 pixel backlit FSTN LCD for both operator and customer.
Standard 2MB (approx. 8,300 PLUs), expandable to 4MB or 8MB. Interfaces:
Includes 1x RJ45 (Ethernet), 1x RS232, and 1x RJ9 for a cash drawer. 2. Installation & Assembly SM-320P (Pole version) , the assembly involves connecting the customer display: Remove Studs:
Unscrew the four stud screws located beneath the scale base. Connect Cables:
Securely join the serial cables from the scale and the pole display. Ensure the side latches click to prevent pin damage. Secure Pole:
Align the pole with the fixing locations and reinsert the stud screws. 3. Service & Maintenance Procedures Label Loading: digi sm320 service manual
Gently pull the side panel, open the print head panel, load the label roll onto the spool, and guide the labels through the designated path before closing. Memory Initialization: (Standard for SM-series) Hold while turning the scale ON, then press the total print key three times followed by the (Clear) key. Thermal Head Maintenance:
Clean the thermal head regularly to maintain a 100km life span. To calibrate the head, hold during power-up. 4. Calibration & Mode Settings
Service manuals for DIGI SM scales typically require a physical Span Switch to be ON for calibration. Software Calibration:
The SM-320 supports software-based calibration for zero point and span adjustments. Spec Settings: by pressing
in sequence to access machine specifications (like Spec 141 for barcode formatting). 5. Troubleshooting Error Messages
The manual contains a full list of error codes. Common issues often relate to: SM-320 | Retail - DIGI (TERAOKA) The SM-320 is a high-speed thermal printing scale
Table_title: Basic Table_content: header: | Model | SM-320 | | | | row: | Model: Capacity | SM-320: 3/6 kg | : 6/15 kg | : | : 15/ DIGI (TERAOKA) Digi SM-300P Scale Repair Guide - Calibration - Scribd
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.
In the world of industrial weighing and retail automation, the Digi SM320 stands out as a reliable and versatile scale-printer. Widely used in supermarkets, delis, and shipping departments, this device combines a high-precision scale with a thermal label printer. However, like any sophisticated piece of equipment, it requires periodic maintenance, calibration, and repair.
Whether you are a technician, a store manager, or a DIY enthusiast, the Digi SM320 Service Manual is your most valuable resource. This article dives deep into what the manual covers, how to access critical service modes, common error codes, and step-by-step maintenance procedures.
Disclaimer: Working with electronic scales involves sensitive components. Always disconnect power before opening the unit. This guide is for informational purposes; refer to the official service manual for your specific firmware version.
The SM320 displays cryptic codes like E-01, E-26, or Ad. Without the service manual, these are just annoying letters. Inside the manual, you will find a full diagnostic table explaining that E-01 indicates an A/D converter failure, while Ad suggests an unstable weight signal. Introduction In the world of industrial weighing and
Official procedure requires spectrum analyzer + directional coupler:
Without proper tools, do not touch – you will detune the radio.
Without Manual: You assume the port is blown. With Manual: You locate the "Communication Settings" table. You realize the SM320 defaults to 2400 baud, 7 bits, even parity. Your printer requires 9600 baud, 8 bits, none. The manual provides the dip-switch configuration (SW1-1 through SW1-8) to change these settings without needing a computer.
The manual provides "Exploded Views"—diagrams showing how the scale fits together. This is essential for safe disassembly without damaging the plastic casing or internal ribbons.
Key Components Covered: