Laser driver doesn't respond upon on/off command from LCB. Probably bad connection between laser driver board, fuse board and LCB.

1. Check data connection (e.g. reference 1 image and e.g. reference 2 image) between all busbar fuse boards and laser driver boards inside the sealed laser compartment.

2. Check if all data connections (e.g. reference 3 image) between the busbar fuse boards inside the sealed laser compartment.

3. Check data connection, outside the sealed laser compartment, between the busbar fuse board (reference 6 image) and the Laser Control Board (reference 7 image)