Flow Chart of Troubleshooting

10-1-8. Camera part

Camera function does not work

Is the connect HDC301 ok?

YES

C452 IS HIGH?

YES

Pin #3 of Q400 = 1.5V?

YES

Pin #3 of Q403 = 2.8V?

YES

NO

Connect the HDC301

 

 

NO

Check U400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

Pin #1 of Q400 IS HIGH?

YES

 

 

 

Check

 

 

 

 

 

 

Q400

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Bat.

 

 

 

 

 

 

 

 

 

 

 

NO

 

 

 

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

Pin #1 of Q403 = High?

 

 

 

Check

 

 

 

 

 

Q401

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check Bat.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Pin#3 of OSC401 is 24MHz?

YES

Is that clock signal at the pin #23 of HDC301?

YES

Pin#24 of HDC301 is High?

END

NO

Replace OSC401

 

and check U400

 

 

NO

 

NO

Check

 

U400

10-18

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Page 64
Image 64
Sharp SGH-T519 manual Camera part