Samsung SGH-A737 Service Manual page 37

Umts telephone

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9-1-2. System Initial

The pin #9 of

" Low --> High" ?

Check the Sleep X-tal signal's

Check the clock signal's

LCD Display OK ?

Sound operation OK ?

Initial Failure

PM401

YES

at C426

YES

at R142

YES

END

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Check the clock generation

circuit (related to U402 and

Check the Audio part

9-3

Flow Chart of Troubleshooting

Check the

PM401

Check the OSC400

TCX100)

Check the LCD part

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