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6-1-2 Abnormal Initial Operation (Normal +3.0V voltage source)
Press
END/
TCXO CLK
applied to U406 pin 35?
TCXO CLK signal output
from U304 pin 37?
LCD-CS signal output
from U104 pin 10A?
CHIPX8 CLK signal output
from U304 pin 38?
LED ON?
Normal initial
display on LCD?
button
Yes
Yes
Yes
Yes
Yes
Yes
END
SAMSUNG Proprietary-Contents may change without notice
Check TCXO output,
R460 and C467.
No
Replace if required.
Check U304 and its neighboring
No
circuit. Replace if required.
No
Check U202, pin 2 Replace if required.
Check 'H' level input U304 pin 38.
No
Check the LED and its neighboring
No
circuit. Replace if required.
Check the LCD pins and its
No
neighboring circuit.
Replace if required.
6-2
Troubleshooting
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