![background image](http://html.mh-extra.com/html/samsung/sch-x359/sch-x359_service-manual_1190104007.webp)
Service Manual Online Homepage: http://manual.kmip.net/ Email: [email protected] ICQ: 343183001 QQ: 35070846
SAMSUNG Proprietary-Contents may change without notice
SCH-X359 Flow Chart of Troubleshooting and Circuit Diagrams
2-
5
This Document can not be used without Samsung's authorization
1-3. Abnormal Key Data Input
Check initial status
No
Yes
END
Scanning signal
outputted from U100
scan 0-5, 0-3
keysense
No
Yes
Nomal key data input?
Check
R343,R345,R351,R353,R356,
U100 and its neiboring
circuits
Replace the key dome sheet
12
3
12
5
END_PW
R
1
2
DOWN
34
5
12
12
1
*
12
1K
R353
9
KEYPAD
12
7
KEYPA
D
12
4
12
2
2
11
2
R351
1K
CLR
SH
12
R345
1K
LIGHT
12
STO
12
12
KEYPAD
8
2
6
12
SEND
1
100PF
C335
34
5
12
UP
R343
1K
INTERNET
12
V_BATT
1K
R370
MENU
12
UNDER
12
LEFT
12
R373
1K
OVER
12
R372
1K
1K
R369
100PF
C334
1K
R371
100PF
C333
0
12
100PF
C336
1K
R356
KEYSCAN(0)
KEYSCAN(1)
KEYSCAN(2)
KEYSCAN(3)
KEYSCAN(4)
KEYSCAN(5)
KEYSENSE(3)
KEYSENSE(2)
KEYSENSE(1)
KEYSENSE(0)
ON_SW
Service Manual Online Homepage: http://manual.kmip.net/ Email: [email protected] ICQ: 343183001 QQ: 35070846