Samsung SGH-U100 Service Manual page 23

Flow Chart of Troubleshooting
VCCD_1.8V
R457
EAR_MICP
EAR_MICN
EAR_R
EAR_L
EAR_SWITCH
JACK_IN
EAR_CHECK
TV_OR_SDS
SDS_RXD
JIG_ON_IF
USB_D+
USB_D-
ZD409 ZD410
RCLAMP0521P
ZD407
1
7
2
8
3
R420
R430
R437
6
1
7
2 5
8
3
4
ZD408
3-10
USB_5V
6
5
4
SDS_RXD_T
JIG_ON_IF_T
ZD406
C417
C430
C419
VEXT VBAT
IFC402
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13 13
14 14
15
15
16 16
17
17
18 18
19
19
20 20
21
NC
22 NC
23 NC
24
NC
C420 C421