Samsung YP-R1 Service Manual page 23

Troubleshooting
4-1-3 If the touch pad doesn't work
If the touch pad doesn't work
Is it set to HOLD OFF?
Does the touch pad respond?
Does the touch pad have a defect?
4-8
Yes
Yes
Yes
No
Cancel the HOLD status by pressing
the power key on the main body.
Disassemble the main body and check
No
if the TOUCH FPCB is connected
If the touch pad is faulty, replace it.
No
(Detailed inspection is required.)
correctly or faulty.
Replace the board.
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