Samsung SCH-A310 Service Manual page 90

Circuit Diagrams
13-2 LOGIC Circuit Diagram 2
2
1
V_BAT
A
U200
UMN1
1
ON_SW
3
PS_HOLD
2
4
HP_PWR
R202
5 47K
DC_VOLT
R204
33K
R207 R206
1K NC
V_PD
R208
10K
R211
100K
R213
3
TA_DET
4.7K
1
2
Q211
B DTC144EE/TR
U240
ISENSE
1 6
DRIVE
ZXT13P20DE6
2 GND VSENSE 5
3 4
VCC PROG
DC_VOLT
LTC1734ES6-4.2#TR
C219
1UF
16V
R217
2.7K
Q213
2SC4617
R218
10K
3
2
CHG_ON
R219
470K
R220 1
C
100K
DC_VOLT
V_MSMA
C227
100NF
R227
C230
200K
2.2NF
3
8
1
EAR_DET
R231
2 1.2K
U220-1 4
D
TC75W56FK-TE12L
5
7
SEND_END
R235
6
75K
U220-2
TC75W56FK-TE12L
R243
100K
R244
2 0
4
EARJ1
5
EPJ1-5-A-D1
3
EAR_SPK+
C240
1
C242 C243 33PF
33PF 33PF
E
1 2
3
R201
4 Q201
C201 S3.6
100K 3
SI3443DV-T1 U201
100NF
R1160N281B
1 2 5 6 1 5
VDD OUT
2
GND
C202
3
33UF 3 4
Q202 CE ECO
1 6.3V
DTC144EE/TR
2
R205
0
TCXO_EN
U203
R1160N251B
1 5
V_PD VDD OUT
2
GND
C208
100NF
3 4
CE ECO
R209
100K
3
ON_SW_SENSE
1 Q203
TCXO_EN
DTC144EE/TR
2 R215
0
C211
NC
CN204-1
24-8005-002-000-867 S3.6
U204
MIC5205-3.0BM5/TR
1 5 OUT 1
IN
2
GND
C213 C214
2 REF_BYP C215
1UF 10UF
4 EN 3 10UF
6.3V
CN204-2
24-8005-002-000-867
Q220
V_BAT
V_IF
C218
10UF
Q206
I_CON Q204
DTA144EE/TR
DTA144EE/TR 1 1
2 2
RED_LED_N GREEN_LED_N
3 3
R221 R222
120 33
LED210
LED211
SML-310LT-T86
S3.6
C228
C229
1UF
1UF
U230
LM4890MM
R228
20K,1% 1
8
AMP_ON _SHDN VO2
2
C231 GND 7
R230 BYPA
100NF
20K,1%
3 VDD 6
CMX_SPK+ +IN
4 5
-IN
VO1
R233
C237
20K,1%
100NF
CMX_SPK-
R234
20K,1%
C238
NC
EAR_MIC+
3
SAMSUNG Proprietary-Contents may change without notice
4 5
KEYPAD
REF : 270 ~ 280
U202
V_PD
MAX809REUR-T
3 2
RESET
VCC RESETIN_N
GND SCAN0
1
C203 C204
10UF 100NF
6.3V KEYSENSE1
R203
SCAN1
NC
V_MSMA
C205
C477
33PF
10NF
V_IF
C209
R210
10UF
NC R212
6.3V 0
R214
C210
4.7K 100NF
SOFT_CON
U250
ISP1105W
18 16 15 14
17
VREG
_OE
1 13
USB_OE_N
_OE
DATA
2 VREG 12
USB_DATA
RCV FSE0
VPI
3 VP VO 11
USB_VPI
VMI
4 VM 10
D+
USB_VMI
SUSPND
SUSPND 5 9
SUSPND D-
MOTOR_EN
19
20 6 7 8
R216 0
C220
100NF
MIC200
MIC
MIC+
MIC-
V_IF
U290
R291
A3212ELH-SAMSUNG
1 OUT 2
VCC
ACZ1005M-152-T
GND
3
C224
100NF
SPK+
D210 D211 D212 D213 D214 D215 D216 D217
S3.6
SPK-
R236
R237 R238 R239 R240
100K
10 10 10 10
R245
3
2.2K Q209
1
BACKLIGHT_EN
MMBT2222AWT1
2
C241 R246
39PF 12
Changed by Date Changed
EXCDMA
4 5
13-2
6 7
I
SCAN0
PWR/END V_BAT
KEYSENSE2
MENU
SCAN0
K_SEN1
TALK
SCAN1
5 4 3 1
C206
33PF 1 2
D250
SMF05.TB
2 C207
33PF
4 5
V_USB
7 8
* 0
KEYSENSE3
C212
KEYSENSE2
33PF
VPU KEYSENSE1
KEYSENSE0
SCAN5
SCAN4
SCAN3
VMO SCAN2
USB_VMO SCAN1
VPO SCAN0
USB_VPO
U251
C216 C217
USBUF01W6 C278
33PF 33PF
C102K,1NF,50V C102K,1NF,50V
1 6
DXIN DXOUT USB_D+
1NF
2 VBUS 5
GND
3 DYIN DYOUT 4
USB_D-
R223
100K VTA IS 5.0V+-0.2
REED_SW USB_D+
USB_D-
C223
DP_RX_DATA
47PF
DP_TX_DATA
R224
R225
V_PD 2.2K
100
C225
C226
470PF 100PF
R226
NC
HP_PWR
H_TX_AUDIO
H_RX_AUDIO
L201
R229
ACZ1005M-152-T
10K,1%
TH_CON
U503
SMF05.TB
SLS-NNBL102TS
SLS-NNBL102TS R232
D218 D219 D222 D221
SLS-NNBL102TS 47K C236 C235
10NF
SLS-NNBL102TS 33PF
SLS-NNBL102TS
SLS-NNBL102TS
SLS-NNBL102TS
SLS-NNBL102TS
SLS-NNBL102TS
SLS-NNBL102TS
SLS-NNBL102TS
R241 R242
SLS-NNBL102TS
10 10
C239
1NF
Engineer
R247
EXCDMA
12
Drawn by
KHS
R&D CHK
TITLE
DOC CTRL CHK
MFG CTRL CHK
Time QA CHK
REV
2002.07.23 9:14:49 am
6 7
8
A
ON_SW
CLK
LEFT
RIGHT
3
DOWN
6
UP
9
# OK
B
C279 C280 C281
C102K,1NF,50V C102K,1NF,50V
1NF 1NF 1NF
IF CONNECTOR
REF : 260
DC_VOLT V_BAT
C
C222
33PF
CN200
1004-0018-305
1
BTT+
2
USB+
3
RESERVED0
4
USB-
5
DP_RX_DATA1
6
DP_TX_DATA1
7
RESERVED1
8
GND
9
RESERVED2
10
RESERVED3
11
GND
12
RESERVED4
13
HP_PWR
14
BTT+
15
TX_AUDIO
16
RX_AUDIO
17
TA+
18
TA+
19
GND
20
21
22
V_BAT
5 4 3 1
GND GND
25 26
C232 C233
C234
2.2NF 100NF
1NF D
2
SAMSUNG
Size
E
D
MF_Rev02
Drawing Number
Sheet2
8