User Guide

SGH-E620 Flow Chart of Troubleshoo ting
2-16
2-7. Key Data Input
Check soldered status of
CN500 and connecting
status between connector
and PBA
Check the Initial Operation
END
Yes
When "#"pad pressed,
Pin 38 of
CN500=2.8V(high)?
Yes
Resolder CN500 or U200
No
Check U200
No
Yes
Check the Keypad &
Dome Sheet
Replace or Adjust
the Keypad & Dome Sheet
1
2
1
1
2