SAMSUNG Proprietary-Contents may change without notice
5-7
SGH-A408 Flow Chart of Troubleshooting and Circuit Diagram
5-7. Key Data Input
Check initial operation
Y
Y
N
Y
Check the
pin 1, 3, 4, of CN602 is
“High”
Check the M46(U201)
N
Y
When one of the keys is
pushed, one of pin [5:12] of
CN602 is “High”
Replace the key PCB
END
Check the connection between
CN602 and Keypad.
Содержание SGH-A408
Страница 20: ...SAMSUNG Proprietary Contents may change without notice 3 1 3 SGH A408 Block Diagrams 3 1 Main Block Diagram ...
Страница 21: ...SAMSUNG Proprietary Contents may change without notice 3 2 SGH A408 Block Diagrams 3 2 Main RF Block Diagram ...
Страница 56: ... Samsung Electronics Co Ltd November 2001 Pinted in Korea Code No GH68 02384A BASIC ELECTRONICS ...