Button Function - BenQ Q7T3-FP737S Service Manual

Q7T3-FP737S Dual function LCD Monitor Service Guide

2. BUTTON function:

2.1 Control Board
OSD is not working
Yes
Is control BD connecting?
Yes
Is bottom switch normally?
No
Replace Control BD
Is OSD working??
No
Check Interface BD
Confidential
Trouble Shooting
No Plug control BD then retry
Yes Replace control BD then retry
2