Lenovo C440 All-in-One - Manual (Page 62)

g. A converter jumper setting is required after replacing the old panel with a new panel. Follow
the below diagram to insert the jumper heads to the pins properly depending on the panel
brands.Follow the below drawing to locate the LCD jumper header on the motherboard:
LCD jump er he ade r
ID 5
ID 4
ID 3
ID 2 ID
ID 1
Jumper head
56 Lenovo C340/440 SeriesHardware Maintenance Manual