1-2. initial – Sharp SGH-C130 User Manual

Page 39

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Flow Chart of Troubleshooting

10-5

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10-1-2. Initial

Initial Failure

The pin #G11 of U107 =

1.8V and

the pin #J12 of U107 =

2.8V ?

Check the

U107

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

Yes

Is the pin #K9 of U107

"Low → High" ?

Yes

Check the

U107

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

There is 32.768kHz wave

forms at the C216 and

C217

Yes

Check the

UCP201

Is the pin #A4 of U107

is "High"

The voltage is "High" at

the C170,C172,C173

Check the

U107

Check the

UCP201

LCD display is O.K

Yes

Check the LCD part

Sound is O.K

Yes

Check the Audio part

END

Yes

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