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SCH-E159 Flow Chart of Troubleshooting and Circuit Diagrams
2-1-2 Abnormal initial operation
Press PWR Button
TCXO CLK outputted
From OSC101 pin3?
NAND_CLE singnal
Inputted to U202
U202 DRAM_CLK
Inputted
LED ON?
Normal initial display
On LCD?
END
Yes
No
Yes
No
Yes
No
Yes
No
Yes
No
Yes
Check OSC101 and it's neighboring circuits
Check U201(MSM6500)
Check U201(MSM6500)
Check LED and it's neighboring circuits
Check LCD pins and it's neighboring circuits
2-4
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