Samsung SGH-X640 Service Manual page 40

Flow Chart of Troubleshooting
11. Camera part
"Camera" function does not work
connector on LCD module
Yes
Check the Camera
Yes
HDC700 pin 48, 50
= 2.8V?
Yes
OSC300 Pin 1 = 24MHz?
Yes
HDC700 pin 24 = 2.8V?
Yes
Is there another problem?
Yes
Replace the camera
module
END
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No
Connect the camera module
No
Check LCD and HDC700
No
Check OSC300 and R318
No
Check the R304, C308
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