BenQ Q7T4-FP71G - 2. BUTTON function; 3. OSD function

Q7T4-FP71G LCD Monitor Service Guide
Trouble Shooting
2
Confidential
2. BUTTON function:
2.1 Control Board
OSD is not working
Yes
Is control BD connecting? No Plug control BD then retry
Yes
Is bottom switch normally? Yes Replace control BD then retry
No
Replace Control BD
Is OSD working??
No
Check Interface BD
3. OSD function:
OSD doesn’t work
Is control BD working? No Replace control BD
Check interface BD
4. Power Board