LG wm2016cw Service Manual page 33

If it still has severe vibration and noise, regulate a specific spin speed that generates excessive vibration and
noise as follows:
1) Put an unbalance part (rubber) inside of the drum.
2) Start the QC test mode (Refer to section 7-2).
3) Press Delay Wash button, then '
4) Press the Spin Speed button repeatedly to select EXTRA HEIGH.
5) Press the Start/Pause button.
6) Press the Beeper button repeatedly to set spin speed (600, 700, 800, 900, 1000, 1100 rpm) and check if there
is vibration and noise.
7) If there is no vibration and noise, increase the spin speed by pressing Beeper button.
8) If there is vibration and noise, press the Cycle selector button to reduce the Spin Speed (reduce by 50 and 100
rpm). In case of 600 rpm, it can not reduce the spin speed.
9) If vibration and noise are reduced, press the WASH/RINSE button to store (2 beep sounds).
* If you want to return to factory default spin speed setting, repeat above steps except step 8).
' is displayed.
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