Ohaus Adventurer ™ Balances AX4201/E

Disconnect the following cables

Remove the screws securing the Main PC Board to the Base

Install replacement Main PC Board in reverse order

Check if the LCD display on the new board is clear of protective plastic covering

Ensure the balance is warmed up

Verify the balance has passed the following tests

Calibrate the balance before performing the Linearity Test

Enter the full capacity of the balance

Calculate and enter the Reference Mass (approximately 1/8 of the full capacity)

Tare the balance. The reading on the display should be 0g.

Record the reading after placing a mass near the maximum capacity on the center of the Pan.

Remove the mass and check if the reading returns to 0g ±1 count.

Enter the number of times the test is repeated (should be 3).

Is the reading within ±1 count of the recorded reading for all repetitions?

Remove the balance load cell metal cover

Locate and remove the cables connecting the Conventional MFR load cell to the balance main PCBA

Locate and remove the screws securing the Conventional MFR Cell to the bottom housing

Ensure the balance is free from drafts

Set Auto-Zero to Off, in Menu Setup

Open the balance (See Section 3.1)

Plug the power cord into the balance and turn it on

Place a mass that weighs the balance’s full capacity on the center of the Pan

Press O/T (the center button) to tare the balance and return the displayed weight to 0g

Note the displayed values when moving the mass to the front, back, left, and right edges of the Pan