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You said

Where can I find instructions for the YZ-208 scales?

Gemini said

Because the YongZhou YZ-208 (and YZ-208B) is a highly common, generic electronic price-computing scale (usually 30kg to 40kg capacity), it shares a standardized interface and programming chipset with other ACS/TCS commercial scales.

You can manage the scale's primary operations and programming shortcuts using the steps and keypad codes below.

Basic Everyday Operations

  • Zero the Scale: If a minor weight displays when the pan is empty, press the ZERO key to reset the baseline to 0.00.

  • Tare (Subtract Container Weight): Place your empty bowl or container on the scale pan. Press the TARE key. The display will show 0.00 and indicate net weight mode. Removing the container will show a negative reading; press TARE again to clear it.

  • Price Computing: Place the items on the scale and type in the unit price using the number keys. The "Total Price" window will calculate the cost automatically.

Hidden Programming & Calibration Codes

Most users look for the YZ-208 manual because they need to recalibrate the unit or change configuration settings. These are executed by entering a security code on the keypad, followed by TARE.

1. How to Calibrate

If your scale is reading weights inaccurately, you can calibrate it using a known physical weight (like a 5kg or 10kg reference weight):

  1. Turn on the scale with nothing on the metal pan.

  2. Type 7616 and press TARE.

  3. Press 3.

  4. Place your 5kg or 10kg calibration weight on the center of the plate.

  5. Type in the exact weight value you just placed (e.g., key in 5.00 or 10.00).

  6. Press TARE to finish and save. (Press ADD or restart the scale to exit).

2. Switching Units (Kilograms vs. Pounds)

  1. Type 168 and press TARE.

  2. Type 166 and press TARE.

  3. Press the CHG or SET key to toggle between kg and lb.

  4. To turn off/lock this function, type 168 -> TARE -> 155 -> TARE.

3. Adjusting Price Decimal Places

If you want to change how many decimals display in your unit price window:

  • No Decimals: Type 168 -> TARE -> 30 -> TARE

  • 1 Decimal Place: Type 168 -> TARE -> 31 -> TARE

  • 2 Decimal Places: Type 168 -> TARE -> 32 -> TARE

4. Turn On/Off the Stable "Hold" Function

If you want the scale to lock and hold the weight reading once it stabilizes:

  • To Enable: Type 168 -> TARE -> 37 -> TARE

  • To Disable: Type 168 -> TARE -> 38 -> TARE

You said

What other hidden codes are there?

Gemini said

The YongZhou YZ-208 (and closely related ACS/TCS commercial scales) has a few other programming and utility codes that allow you to modify physical capacity parameters, configure zero-point tracking, and even store text like a phone number.

Below are the additional hidden codes used to adjust these deeper settings.

1. Capacity and Precision (Decimal) Configuration

These codes are used to change the absolute limit of the scale and how precisely it counts divisions (e.g., whether it counts in increments of 5g, 10g, or 2g).

  • Change Max Capacity & Accuracy:

    1. Type 7616 and press TARE.

    2. Press 1 to adjust the Maximum Capacity, or press 2 to adjust the resolution accuracy (e.g., 0.005 or 0.010).

    3. Press 0 to save your changes and exit.

2. Zero-Tracking and Reset Settings

The scale uses auto-zero tracking to slowly filter out drift (like dust or temperature changes affecting the load cell).

  • Re-center/Reset the Absolute Zero Position: If the zero point has drifted severely and the regular ZERO key won't clear it, use this sequence:

    • Type 168 -> TARE -> 50 -> TARE -> ADD -> TARE.

3. Storing Contact/Phone Information

Some versions of the YZ-208 firmware allow you to store a custom phone number or ID in the internal memory, which can display on startup or be printed if a compatible serial printer is attached.

  • Store a Custom Number:

    1. Type 168 and press TARE.

    2. Type 111 and press TARE.

    3. Press the C (Clear) key.

    4. Input your custom phone number or numerical string using the keypad.

    5. Press TARE to save.

Alternative Master Calibration Passwords

If 7616 or 168 ever fails to register on your specific unit (as chipsets can vary slightly depending on the exact manufacturing batch of the mainboard), the following master bypass passwords are often used on this same hardware chassis to initiate calibration:

  • 3658 (followed by TARE -> 1 -> TARE)

  • 52068 (followed by TARE)

  • 8518 (followed by TARE)

  • 2068 (followed by TARE)

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