Samsung LTW19HS Service Manual page 41

4. Troubleshooting
2. Press the - button to change the setting to On or Off.
When replacing the panel

After replacing the panel, move to the Panel item and hold down the Menu button for five (5) seconds.
The Ch. No is incremented by 1 and then both the On Time and Cycle are set to 0.
This number is incremented by 1.
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