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Samsung SCH-X359 Service Manual page 7

Cdma telephone

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1- 3. Abnormal Key Data Input
KEYPA D
Service Manual Online Homepage: http://manual.kmip.net/ Email: web_manual@163.com ICQ: 343183
Service Manual Online Homepage: http://manual.kmip.net/ Email: web_manual@163.com ICQ: 343183
Check initial status
Scanning signal
outputted from U100
scan 0- 5, 0- 3
keysense
Yes
Nomal key data input?
Yes
END
MENU
OVER
LEFT
12
12
12
LIGHT
STO
SEND
12
12
1
1
2
3
12
11
2
12
4
5
6
12
12
12
7
8
9
KEYPAD
KEYPAD
12
12
12
*
0
SH
12
12
12
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
SCH- X359 F low Chart of Troubleshooting and Circuit Diagrams
No
R343,R345,R351,R353,R356,
U100 and its neiboring
No
V_BATT
END_PW R
2
1
UNDER
12
INTERNET
2
12
CLR
2
12
UP
34
5
12
DOW N
34
5
R369
R370
R371
1K
R372
1K
R373
1K
C333
C334
C335
100PF
100PF
100PF
2- 5
Check
circuits
Replace the key dome sheet
ON_SW
R343
1K
KEYSCAN(0)
R345
1K
KEYSCAN(1)
R351
1K
KEYSCAN(2)
R353
1K
KEYSCAN(3)
R356
1K
KEYSCAN(4)
1K
KEYSCAN(5)
1K
KEYSENSE(3)
KEYSENSE(2)
KEYSENSE(1)
KEYSENSE(0)
C336
100PF

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