Motorola C168 Руководство - Страница 8

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Motorola C168 Руководство

1.1.3.4 Earphone Speaker Fail

Check R315, R316 If
any AC signal change
Check L32 If any AC signal

1.1.4 LCM Fail

LCD does not work
Check if CN301 is well
Measure Signal of
CON301 Pin 4, 14 is 1.8V ?
Measure Signal of
CON301 Pin5 ~ Pin12 any
signal wave ?
Earphone doesn't
work
YES
change
YES
Check Earphone
Impendence is
32 Ohm
Faulting Finding Chart of "Receiver fail"
mounted
YES
YES
Faulting Finding Chart of "LCD fail"
NO
Check R315, R316
solderring
NO
Defective L32
Defective Earphone
Defective connector
NO
CON301
NO
Defective U202
Defective U201
YES
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