Flow Chart Of Troubleshooting - Samsung SGH-U900 Service Manual

Flow Chart of Troubleshooting

VMSMB_2.6V
R411
TA_DET
CHG_ING_N
TA_EN
VEXT_5.0V VBAT
R618
RADIO_ANT
ZD601 TA601
C607 C608
VMSM_1.8V VUSB_5.0V VEXT_5.0V
R412
C438
R422
C439
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IFC600
1200-0020-05
1
2
R620
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
2 1
24
L604
25
ZD608
VBAT
U401
1 10
BAT
CRDL
2 9
USB ICDL
3 _PPR GND 8
R414
4 _CHG USBON 7
5 6
_EN IMIN
GND
11
C437
10-5
VUSB_5.0V
ICHRG
R423
R424