W91570DN SERIES
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Press the "A1" key
Press the "6" key
(L6 = "314P4430256")
Press the "CHK" key
The system will go back to timer mode after 6 seconds
(Timer count up continuously)
Press the "F1", "F2" or "F3" key
After flash break is executed
Blinking
(The timer will stop and LCD will display a flash mark and flash pattern)
After flash pause is
executed
Blinking
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