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5-2
Flow Chart of Troubleshooting and Circuit Diagrams
BATTID
24
CHGR_EN/
U302
MAX1560
VF
CHG_ON
SCL
SDA
ON_OFF
RST
SYSCLKENAN
I_CHARGE
LVCC
2V8AERO
RTC_VCC
2V8RFVCC
VDD3.0
C303
100NF
C322
RB414
100NF
C300
C309
10NF
100K
R310
0
R311
D302
DAN222TL
3
1
2
TP647
VMOT
17
VRF
20
15
VRTC
VTCXO
18
5
27
RESET/
6
RF_EN
TCXO_EN
13
VANA
21
14
VBACKUP
VBATT
3
VDIG
23
26
VICHG
19
IN3
16
NC
37
NC
38
ON/
29
8
PGND
31
PWR_HOLD
PWR_ON
25
REFBP
GND
4
33
GND
34
GND
GND
35
36
GND
HP_PWR
28
IN1
22
IN2
32
CHG_GATE
2
CHG_IN
1
CLK
11
30
CS
DATA
12
DR1
7
DR2
91
0
DR3
BLM10A102SGPT
L301
10NF
C346
4.7UF
C308
10NF
C310
C307
4.7UF
1UF
C306
TP644
U301
STPS140Z
C305 27PF
C313
10NF
C314
4.7UF
4.7UF
C342
4.7UF
C345
C343
4.7UF
10NF
C344
C301
10UF/6.3V
SI3443DV-T1
Q301
1
2
5
6
G
3
SS
4
C304
100NF
100NF
R346
100K,1%
C302
TP645
R350
0
82K,1%
R345
TP646
0
R312
10NF
C315
9PF
C312
DCVOLT
+VBATT
10NF
C311
DVCC2.5
AVCC2.5
BAT_VOLT
BB_PWR
DCIN
DCIN
Summary of Contents for SGH-T408
Page 2: ...Samsung Electronics Co Ltd Printed in Korea 01 2003 Rev 1 0 GH68 03159A ELECTRONICS ...
Page 11: ...2 1 PCB Diagrams 2 PCB Diagrams 2 1 Main Top ...
Page 12: ...2 2 PCB Diagrams 2 2 Main Bottom ...
Page 22: ...4 Block Diagrams 4 1 Main Baseband 4 1 Block Diagrams ...
Page 38: ...5 13 5 8 Receiver Part Flow Chart of Troubleshooting and Circuit Diagrams ...
Page 39: ...5 14 Flow Chart of Troubleshooting and Circuit Diagrams ...
Page 43: ...5 18 Flow Chart of Troubleshooting and Circuit Diagrams 5 12 GSM Receiver ...
Page 44: ...Flow Chart of Troubleshooting and Circuit Diagrams 5 19 5 13 GSM Transmitter ...
Page 45: ...5 20 Flow Chart of Troubleshooting and Circuit Diagrams 5 14 DCS Receiver ...
Page 46: ...Flow Chart of Troubleshooting and Circuit Diagrams 5 21 5 15 DCS Transmitter ...