![background image](http://html.mh-extra.com/html/samsung/sgh-zv40/sgh-zv40_service-manual_1191373044.webp)
SAMSUNG Proprietary-Contents may change without notice
Flow Chart of Troubleshooting
This Document can not be used without Samsung's authorization
9-11
9-6. Key Data Input
Replace the PBA
Check the Dome sheet & Key Pad
Yes
No
When any key is pushed,
is KEY_IO signal OK?
Check Initial Operation
Yes
Yes
No
END
When any key is pushed,
is it displayed on LCD?
Summary of Contents for SGH-ZV40
Page 32: ...8 PCB Diagrams 8 1 ...
Page 33: ...PCB Diagrams 8 2 ...