Samsung YP-S5 Service Manual page 27

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4-1-4 TOUCH PAD Does Not Work
Symptom
Keypress input malfunction or failure
Major Checklist
Check if FPCB is defective.
TOUCH PAD Does Not Work
Is the SWITCH in the
HOLD OFF position?
Do touch keys respond?
Is the TOUCH PAD malfunctioning?
Disassemble the unit and check if
the TOUCH PAD has come off the
framework.
Samsung Electronics
Yes
Yes
Yes
No
Check the top of the unit to see if it is
Disassemble the unit and check if
No
If the TOUCH is poor, replace the
No
Troubleshooting
set to HOLD SW ON.
FPCB is defective.
TOUCH PAD.
Replace the BOARD
(needs thorough examination).
4-9

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