Zn-401s Manual -

ZN-401S Manual — Quick-Start Blog Guide

When to Contact Support

• Hardware failures (burning smell, visible damage).
• Repeated crashes or unrecoverable errors after resets/firmware updates.
• If model-specific procedures, default credentials, or detailed diagnostics are required.

Step 5 – Data Logging

Connect to PC via RS232. Open a terminal (e.g., PuTTY, Tera Term). Press PRINT. The ZN-401S will output: +123.456 g.

Always refer to your specific ZN-401S manual for exact button sequences, as firmware versions differ. zn-401s manual

Q2: Does the ZN-401S manual include a parts list?

Yes. It includes exploded diagrams with part numbers for the pan, pan support, housing, LCD ribbon cable, and main PCB. ZN-401S Manual — Quick-Start Blog Guide When to

Step 4 – Changing Units

Press MODE to cycle through:

• g (grams – default)
• ct (carats – for gemstones)
• oz (ounces – for cooking/industrial)
• dwt (pennyweight – precious metals)

The Display

The LCD screen typically displays the following: Hardware failures (burning smell, visible damage)

• Current Time: Hours, Minutes, and Seconds.
• Day of the Week: Indicated by numbers (1=Mon, 2=Tue, etc.) or abbreviations.
• Status Icons: "ON" or "OFF" indicating the current output state.
• Program Number: Shows which program is currently being edited (P-01, P-02, etc.).

Firmware Updates

• Download only from the official source for your device model.
• Use wired power and network during updates; do not interrupt.
• After update, verify functionality and reapply custom settings if needed.