Samsung SCH-N500 Service Manual page 32

Flow Chart of Troubleshooting
7-1-2 Abnormal inital operation
Press PWR button Press PWR button
Yes Yes
TCXO TCXO
applied to U104 pin2 ? applied to U104 pin2 ?
Yes Yes
TCXO TCXO
signal outputted from signal outputted from
U104 pin4 ? U104 pin4 ?
Yes Yes
END END
No No
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
No No
Check OSC301,U449 and its Check OSC301,U449 and its
Check U104 and its neighboring Check U104 and its neighboring
circuits. Replace if required. circuits. Replace if required.
7-4
neighboring circuits neighboring circuits