Hardi ALPHA EVO EcoDrive 5100 Instruction Book page 198

7 - Repair
4. Press the button (2) to scroll the first digit.
Press the button (6) to move the cursor to the 2nd digit
5.
6. Press the button (4), le message «U2» is displayed briefly, then signal from control unit is displaye d
Press and hold
7. the button (5) to get the minimum track. Measure and note the value (V).
8. Press the button (4), the me ssage «d2» appear briefly
9. Press the button (2) to scroll the first digit.
Press the button (6) to move the cursor to the 2nd digit
10.
11. Press the button (4) to exit the calibration me nu.
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