Samsung SGH-U700 Service Manual page 20

Gsm telephone

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Table of Contents

Flow Chart of Troubleshooting

3-1-2. Initial

Initial Failure

The pin #9 of PMIC

"LOW --> High"?

(use D302 pin)

check the sleep x-tal at C514,

check the clock signal at

LCD display is O.K

Sound is O.K

Yes

C513

Yes

R515

Yes

END

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Check the PMIC

Check the OSC501

(if it has some problem, it is to be replaced.)

check the clock generation circuit related to

PMIC and OSC501

Check the LCD part

Check the Audio part

3-4

Table of Contents

Troubleshooting