Samsung YP-U5, Руководство по обслуживанию

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4-8 Samsung Electronics
Troubleshooting
Remove the
DOME-SHEET-KEY, short-circuit the
corresponding pad and check
if it works.
Does the button on the
PCB work when pressing it?
Check if the
resistance is normal at R35, R36, R41,
R49, R65, R67 and R70.
Repair or replace the knob key and
check it again.
Replace the faulty resistor and check
it again.
Replace the board
(Detailed inspection is required.)
No
Yes
No
Yes
No
/-/FF/REW/Select buttons
Yes
Replace the DOME-SHEET-KEY and
check it again.
Yes