Acer P221W Product Service Manual page 33

2. Control Board
Checking
Contorl Board
Working ?
Button switch and traces
Transistors and Bead to
Control board OK ?
Replace a new
interface board
Yes
Yes
OK ?
Yes
Yes
- 33 -
No
Replug the control
wire, then retry
No
Replace the
Control Board,
then retry
No
Replace the
components, then
retry