3a.1. 2x Blinking – Main Power Error
LK Board
LK-Board
Check DC voltage at
2 times
Q6020/ *Q6022
Blinking
18V – 22.5V?
*Typical: 19.5V
Change LK-
board
*For LK2
Take out adaptor
No
and check the output voltage.
(Refer Figure 1)
*Typical: 19.5V
Yes
Adaptor
No
18V – 22.5V?
Yes
Change LK-
Board
Change
Adaptor
Figure 1: How to check adaptor's output
voltage.
-ve
+ve
Ensure that
+ve probe is
touching the
needle.
18