Samsung SGH-S300 Service Manual page 31

SGH-S300 Flow Chart of Troubleshooting and Circuit Diagrams
1
F201
1 OUT 5
D(8) I N
2 6
D(10) I N OUT
3 7
D(12) I N OUT
A
4 8
I N
D(14) OUT
GG
9 10
F204
1 5
D(9) I N OUT
2 6
D(11) I N OUT
3 7
D(13) I N OUT
4 8
I N
D(15) OUT
G G
B
91 0
F200
1 5
D(6) I N OUT
2 6
D(4) I N OUT
3 7
D(2) I N OUT
4 8
I N
D(0) OUT
G G
91 0
C
D
KEY_COL(0:4) R222
KEY_COL(0 )
47 R223
KEY_COL(1 )
R224 47
KEY_COL(2 )
47 R225
KEY_COL(3 )
R226 47
KEY_COL(4 )
47
R227
47
KEY_ROW(0:4)
KEY_ROW(0)
R228
47
KEY_ROW(1)
E
R229
47
KEY_ROW(2)
R230
47
KEY_ROW(3)
R231
47
KEY_ROW(4)
F
1
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2 3
F203
1 OUT 5
D(8)_F O A(2) I N A(2)_FO
2 6
D(10)_FO GLCD_EN I N OUT GLCD_EN_F O
3 7
D(12)_FO CP_WE N I N OUT CP_WEN_FO
4 8
I N
D(14)_FO CLCD_EN OUT CLCD_EN_F O
GG
9 10
F202
1 5
D(9)_F O D(7) I N OUT D(7)_FO
2 6
D(11)_FO D(5) I N OUT D(5)_FO
3 7
D(13)_FO D(3) I N OUT D(3)_FO
4 8
I N
D(15)_FO D(1) OUT D(1)_FO
GG
9 10
LCDVIB_EN
D(6)_F O LCDVIB_EN
D(4)_F O LED_EN LED_EN
D(2)_F O EL_EN EL_E N AOUTAP
D(0)_F O
R202
SPK1N
EMI FILTER
PW R
K E Y P A D
12
SEN D CLEA R
K E Y P A D K E Y P A D
12 12
1 2 3 U P
K E Y P A D K E Y P A D K E Y P A D KEY-TACT
12 12 12 I1 1
4 5 6 DOW N
K E Y P A D K E Y P A D K E Y P A D KEY-TACT
12 12 12 I1 1
7 8 9 LEFT
K E Y P A D K E Y P A D K E Y P A D K E Y P A D
12 12 12 12
* 0 SHARP RIGHT
K E Y P A D K E Y P A D KEY-TACT 3 K E Y P A D
1 2 12 I1 12 I2 1
2 3
SAMSUNG Proprietary-Contents may change without notice
4 5
CP_WE N
CP_TD O
RESET_IN T
CP_TD I
CP_TMS
CP_TC K
VBA T
VCC D
C104 6
RST
R20 0
18 18 17 17 0
GREEN_LED
19 16
19 16
LCDVIB_EN
20 20 15 15
LED_EN 21 14 14
21
22 22 13 D(0)_FO
13
D(8)_FO 23 12 D(1)_FO
23
12
D(9)_FO 24 24 11 D(2)_FO
11
D(10)_FO D(3)_FO
25 25 10
10
D(11)_FO 26 26 9 D(4)_FO
9
27 8
D(12)_FO D(5)_FO
27
8
D(13)_FO 28 28 7 D(6)_FO
7
D(14)_FO 29 6 D(7)_FO
29
6
D(15)_FO 30 30 5 A(2)_F O
5
MSPK+ 31 4 CP_WEN_FO
31
4
MSPK- 32 32 3 EL_EN
3
RED_LED 33 2 CLCD_EN_FO
33
2
BLUE_LED
34 34 1 GLCD_EN_F O
1
CN20 0
R201
12
C206
C200
100N F
33NF
C207 C205
100PF 330NF
0
LCD CONNECTOR
PWR_ON
VBA T
I 12
KEY-TACT 3
1 U20 0
I1 2 I2
34 5
3
2I 2
3
2 I2
12
MENU
U20 1
KEYPAD-5PHI
12
34 5
STO
K E Y P A D
2 12
KE Y
Changed by
user12
4 5
6-14
6 7
T6
T1
T2
T3
T4
T5
C209 C21 0 C211 C212 C21 3
IRDA_TX
IRDA_R X
IRDA_EN
C204
1U F
JTAG CON
BACKLIGHT
Engineer
SEOY H
Drawn by
SEOY H
R&D CH K
TITLE :
DOC CTRL CH K
SGH-S300
MFG ENGR CH K
Date Changed Time Changed QA CH K REV
2002.11.1 3
6:01:42 pm
6 7
8
A
VBA T VCC D
LED20 0
1
LED A B
2
LED C
3
TX D
4
R X D
5
S D
6
VCC
7
C208
GND
100N F
C
IRDA
D
E
COMPANY NAME
Address
F
City
Size
A3
Drawing Numbe r
Shee t 2 of 10
8