![background image](http://html.mh-extra.com/html/samsung/sch-a105/sch-a105_service-manual_1189790061.webp)
SAMSUNG Proprietary-Contents may change without notice
11-1
5
S i z e :
1 2
TI T L E:
H
3
3
B
5
Ci t y
En g i ne e r :
D G N D
9
E
DG N D
C
G
C
9
1 0
R& D CH K :
A
Dr a w n b y :
A G N D
2 . 4
H
2
D a t e C h a n g e d :
6
1 0
QA C HK :
1
1 1
1 1
D
Ch a n ge d by :
1 2
8
A
1
B
4
E
7
LO G IC
P a g e :
C O M P A N Y N A M E
G
D r a w i n g N u m b e r :
S C H -A 1 0 5
7
2
F
Ad d r es s
8
4
Ti
m e C h a n g e d :
6
F
R E V :
AG N D
D
DO C CT R L C H K :
MF G EN G R C H K :
M S J
2 0 0 0 .
5 .
4
A 2
12 1 8 A
1
C 1 0 4
4 7 0 PF
2 K
R 1 4 3
C 1 1 7
1 0 N F
1 N F
C 1 3 5
12
TP10
6
1 K
R 1 4 6
T P 1 0 4
T P 1 0 5
T P 1 0 2
T P 1 0 3
R1 1 8
10 0 K
T P 1 0 1
Q 1 0 6
1
3
2
V B A TT
2
1
3
5
4
6
C 1 3 2
1 N F
Z D 1 03
16
C 1 6 1
8 2 N F
2G
4B
_L B
_O E
3G
5C
_R E S ET
_U B
4C
_W E
6B
_W P / AC C
5B
9E
RY / _ BY
5D
8F
SA
5H
VC C F
VC C S
6H
3F
VS S 1
VS S 2
9H
_C E 1 S
2H
_C E F
10 K
NC 1 6
5A
NC 2
NC 3
6A
10 A
NC 4
NC 5
1B
6D
NC 6
NC 7
9D
1E
NC 8
NC 9
4G
NC 1
1A
10 E
NC 1 0
NC 1 1
1F
10 F
NC 1 2
1K
NC 1 3
5K
NC 1 4
NC 1 5
6K
8G
DQ 1 5 /A - 1
4J
DQ 2
DQ 3
5G
6G
DQ 4
DQ 5
7J
7F
DQ 6
DQ 7
8H
3J
DQ 8
DQ 9
6J
CI O S
3H
DQ 0
DQ 1
4F
4H
DQ 1 0
DQ 1 1
5J
7H
DQ 1 2
DQ 1 3
7G
8J
DQ 1 4
3E
3D
A5
A6
3C
3B
A7
A8
7B
7D
A9
CE 2 S
6C
CI O F
9G
8E
9C
A1 5
A1 6
9F
4E
A1 7
A1 8
4D
7C
A1 9
A2
2D
2C
A3
A4
U 1 0 2
A0
2F
2E
A1
A1 0
7E
8B
A1 1
A1 2
8C
8D
A1 3
A1 4
D 1 0 0
3
1
2
6 8 P F
C 6 0 2
3 . 0 V
C 1 3 3
1 N F
3. 0 V
15
R1 0 7
47 K
1 0 0 PF
C 1 2 3
1K
R1 1 7
10 0 K
R1 1 2
4 7 0
R 1 0 4
1 N F
C 1 2 9
1 0 0 K
R 1 1 6
C1 1 0
1N F
C1 5 0
R1 9 9
10 0 K
10 N F
3 . 3 K
R 1 4 8
R 1 2 8
X1 0 2
9
3. 0 V
6 . 8 K
1N F
C1 1 6
13
3 . 0 V
17
R1 9 6
10 K
3 . 0 V
R 1 3 2
1 0 K
1
3
5
4
6
6. 8 K
R1 0 5
Z D 1 02
2
R 1 6 0
5 1 K
3 3 0
R 1 3 8
1
4 7 N F
C 1 1 8
Q 1 6 0
2
3
R 1 2 7
1 K
18
7 5 0
R 1 7 5
1 0 V
1 U F
C 1 2 4
C1 5 3
10 U F
6. 3 V
C 6 0 1
6 8 P F
2
1
S R T
4
V C C 1
V C C 2
3
5
_ R E SE T
C1 2 6
U 1 0 1
G N D
10 0 P F
C1 5 1
10 0 N F
R 1 2 2
1 . 2 K
7
7
8
8
9
9
1 0 0
R 1 0 1
3 7 3 7
3 83 8
3 9
3 9
4
4
4 0
4 0
5
5
6
6
3
3
3 03 0
3 1
3 1
3 2
3 2
3 3 3 3
3 43 4
3 5
3 5
3 6
3 6
2 22 2
2 3
2 3
2 4
2 4
2 5 2 5
2 62 6
2 7
2 7
2 8
2 8
2 9 2 9
1 41 4
1 5
1 5
1 6
1 6
1 7
1 7
1 81 8
1 9
1 9
2
2
2 0
2 0
2 1 2 1
J 1
1
1
1 01 0
1 1
1 1
1 2
1 2
1 3
1 3
22
10
R 1 0 8
1 0 0
C1 1 3
27 P F
3 . 0 V
10 0
R1 4 4
5
2
19
R1 0 9
10 K
10 N F
C1 1 4
1
3
2
R 1 3 9
1 0 K
Q 1 0 0
1 0 K
C 1 0 6
1 0 0 PF
R 5 8 2
3 . 0 V
1 0 N F
C 1 3 7
3. 0 V
10 0 K
R1 1 9
21
10 N F
C1 2 8
R1 4 5
22 K
1
3
2
Q 1 0 7
Q 1 0 3
1
3
2
1 0 0 PF
C 1 0 7
3. 0 V
2 2 K
R 1 4 7
14
1
6
33
0
C N 1 0 1 - 1
3. 0 V
R
131
2 2 K
R 1 2 9
7
C1 0 3
47 0 P F
3 6
R 1 4 9
R 1 0 0
2 2 K
1 5 K
R 1 3 4
4. 7 K
R1 2 4
C 6 0 7
6 8 P F
C 1 0 8
1 0 0 PF
3
1
1 N F
C 1 2 0
Q1 0 4
2
2 2 K
R 1 2 5
C1 6 6
10 0 N F
6 8 P F
C 6 0 0
X 1 0 1
5
6
2
4
1
C1 2 7
3. 3 N F
6 8 P F
C 6 0 4
6
S C L
S D A
5
V C C
8
W P
7
3 . 0 V
U 1 0 5
A 0
1
2
A 1
3
A 2
G N D
4
3 . 0 T
3
C1 1 1
10 0 K
R1 1 5
27 P F
1 0 0
R 1 0 6
3
1
11
Q 1 0 8
2
R1 1 0
1K
R1 0 3
10 0
C 6 0 3
6 8 P F
R1 8 8
10 0 K
6 8 P F
C 6 0 6
3 . 0 V
4
1N F
C1 1 2
C1 4 0
1N F
1N F
C1 3 9
R 1 6 1
C1 3 8
1N F
C1 2 1
3 . 0 V
N C
R1 1 1
47 P F
R 1 5 0
3 6
10 0
0
R1 1 3
C 6 09
6 8 PF
1 K
R 1 3 5
N C
C 6 0 5
6 8 P F
R 1 7 4
R 1 5 1
3 6
3. 0 V
1 0 0 NF
C 1 3 4
V B A TT
4 . 7 K
3 3 0
R 1 3 0
R 1 8 7
C 1 8 7
1 0 N F
3 . 0 V
20
10 K
1N F
R1 9 4
1N F
C1 3 0 C1 3 1
C 1 3 6
1 N F
27 K
C1 2 5
10 0 P F
R1 8 5
Q1 1 0
1 2 5 6
G
3
4
R 1 02
4 7 K
C 1 1 5
1 0 N F
Q1 0 2
2
3
1
8 C
4H
_TX_
CLK
8
_ H W R
2M
_IDL
E
_ L W R
1 2 N
1 2 L
_ R A M _ C S 1
_ R A M _ C S 2
1 1 L
_ R D
1 1 M
9 M
_ R E S I N
5N
_RFR
_ R O M _ C S 1
1 4 M
_ R O M _ C S 2
1 4 N
_SLE
E
P
1D
_ T E S T
VDD5
9K
VDD6
10F
VDD7
10J
1 2 B
W D O G S T B _ P C M S C S
W D O G _ E N
1 0 L
X T A L _ I N
1 0 M
1 2 P
X T A L _ O U T
YAMN
1
4M
_CTS
5M
3M
_GP_
CS
1 3 N
TX_I
Q
DAT
A
2
TX_I
Q
DAT
A
3
1K
4J
TX_I
Q
DAT
A
4
3H
TX_I
Q
DAT
A
5
1J
TX_I
Q
DAT
A
6
TX_I
Q
DAT
A
7
2J
5F
VDD0
VDD1
5J
6E
VDD2
VDD3
6K
9E
VDD4
T C K
2L
TCX0
8 A
T D I
T D O
7 A
TMOD
E
4D
T M S
5 B
T R K _ L O _ A D J
3 N
T X _ A G C _ A D J
3 K
TX_C
LK
1H
1L
TX_I
Q
DAT
A
0
TX_I
Q
DAT
A
1
3J
2K
P C M _ S Y N C
1 1 C
PDM1
2P
3P
PDM2
Q_OF
FSET
2D
R E S O U T
1 1 P
4 N
R I N G E R
1 M
R X _ A G C _ A D J
11N
SLEE
P_XT
AL_I
N
10K
SLEE
P_XT
AL_O
UT
S Y N T H _ L O C K
4 K
7 C
NC0
NC1
1P
NC2
14A
14P
NC3
4 L
P A _ O N
1 2 M
P A _ O N 2
P A _ R 0
3 L
P A _ R 1
1 N
1 1 B
P C M _ C L K
1 2 A
P C M _ D I N
P C M _ D O U T
1 3 A
KEYS
E
NSE
0
KEYS
E
NSE
1
4C
3B
KEYS
E
NSE
2
KEYS
ENSE
3
5E
3 A
K E Y S E N S E 4
LCD_
C
S
10A
13P
LCD_
E
L N A _ G A I N
1 3 M
L N A _ R A N G E
2 N
MODE
0
2B
3C
MODE
1
1A
6D
GPIO
6
G P I O 7
6 A
6 B
G P I O 8
G P I O 9
7 D
9 P
G P I O _ I N T 0
8M
GPIO
_INT
1
GPIO
_INT
2
9L
10P
GPIO
_INT
3
1 0 N
G P I O _ I N T 4
3D
I_OF
FSET
2A
7 M
7 N
G P I O 2 4
7 P
G P I O 2 5
8 N
G P I O 2 6
G P I O 2 7
8 L
8P
GPIO
2
8
9N
GPIO
29
4A
GPIO
3
GPIO
30
5K
GPIO
4
6C
5A
GPIO
5
9 A
G P I O 1 4
9 B
G P I O 1 5
9 C
G P I O 1 6
9 D
GPIO
1
7
5P
GPIO
1
8
6L
6 M
G P I O 1 9
GPIO
2
5D
G P I O 2 0
6 N
6 P
G P I O 2 1
7 L
G P I O 2 2
G P I O 2 3
GND5
6J
7E
GND6
GND7
7F
7G
GND8
GND9
7H
GPIO
0
5C
GPIO
1
4B
7 B
G P I O 1 0
8B
GPIO
1
1
G P I O 1 2
8 D
G P I O 1 3
GND1
6
8K
GND1
7
9F
GND1
8
GND1
9
9G
6F
GND2
9H
GND2
0
9J
GND2
1
10G
GND2
2
GND2
3
10H
6G
GND3
GND4
6H
FM_R
X_ID
ATA
FM_R
X_QD
ATA
3E
1E
FM_R
X_ST
B
5G
GND0
5H
GND1
GND1
0
7J
GND1
1
7K
8E
GND1
2
GND1
3
8F
8G
GND1
4
GND1
5
8H
8J
1 2 K
D 3
D 4
1 3 K
1 4 K
D 5
D 6
1 1 J
1 2 J
D 7
D 8
1 3 J
D 9
1 4 J
5L
DP_R
X
_DA
T
A
DP_T
X
_DA
T
A
4P
FM_R
X_CL
K
2E
4E
C_RX
_QDA
TA2
4F
C_RX
_QDA
TA3
D 0
1 3 L
1 4 L
D 1
1 1 H
D 1 0
1 2 H
D 1 1
1 3 H
D 1 2
1 4 H
D 1 3
D 1 4
1 3 G
1 1 G
D 1 5
D 2
1 1 K
1 0 B
A U X _ P C M _ D I N
1 0 D
1 1 A
A U X _ P C M _ D O U T
1 0 C
A U X _ P C M _ S Y N C
2 H
C H I P X 8
1G
C_RX
_IDA
TA0
C_RX
_IDA
TA1
2G
3G
C_RX
_IDA
TA2
C_RX
_IDA
TA3
4G
1F
C_RX
_QDA
TA0
C_RX
_QDA
TA1
2F
3F
1 2 G
A 3
A 4
1 1 F
1 4 E
A 5
A 6
1 3 E
1 2 F
A 7
A 8
1 4 D
1 1 E
A 9
1 C
A D C _ C L K _ S B C K
A D C _ D A T A _ S B D T
1 B
A D C _ E N A _ S B S T
2 C
A U X _ P C M _ C L K
1 3 D
1 2 E
A 1 1
A 1 2
1 4 C
1 0 E
A 1 3
A 1 4
1 3 C
1 2 D
A 1 5
A 1 6
1 4 B
1 3 B
A 1 7
A 1 8
1 2 C
A 1 9
1 1 D
A 2
1 4 F
U 1 0 4
1 4 G
A 0
1 3 F
A 1
A 1 0
R X
1 K
R 1 2 6
G N D
H P _ P W R
F _ W E
V B A T T
T X
R1 9 8
0
C 1 6 0
1 0 0 NF
10 0 K
R1 2 0
C1 6 5
10 0 N F
C1 0 5
10 0 P F
6 8 P F
C 6 0 8
R 1 3 3
R1 2 3
22 K
N C
1 0 0 NF
C 1 2 2
R 1 6 2
0
C 1 1 9
4 7 0 PF
10 N F
R1 2 1
C1 0 9
10 K
FM _ S TB
C_ R X _I D ( 0)
C_ R X _I D ( 1)
K
EY3
SE
N
D
_E
N
D
M O D E
A L T _L E D
C O N _S L E EP
R E S OU T
HP _ P WR
DP _ R X_ D A TA
DP _ T X_ D A TA
VB A T T
A ( 2 )
A D ( 0)
A D ( 2)
A D ( 4)
A D ( 6)
AD ( 1 )
AD ( 5 )
AD ( 7 )
HP _ P WR
LC
D
_
E
K E Y 3
GA T E
TX _ C LK
_T X _ CL K
TC X O _N
FM _ C LK
A L T _L E D
A( 2 0 )
A L T _L E D _O N
S V C _L E D _O N
VI N
VB A T T
PS _ H OL D
AD ( 3 )
EL _ E N
L C D _E
RE S O UT
SV C _ LE D _ ON
A L T _L E D _O N
MO T O R
S P K -
BU Z
S P K +
L E D _O N
R E E D_ S W
O N _ SW
M I C
P A _ R0
AD C _ EN A _ SB S T
AD C _ CL K _ SB C K
AD ( 0 :1 5 )
A( 0 : 19 )
C O _ DO U T
C O _ DI N
AD ( 1 5)
_ R D
A ( 1 )
A ( 2 )
A ( 4 )
A ( 6 )
A ( 8 )
A ( 1 8 )
A ( 1 6 )
A ( 1 4 )
A ( 1 2 )
A( 0 )
AD C _ DA T A _S B D T
R E E D_ S W
D P _ RX _ D AT A
C D
R I
R T S
I M D _C T L
ON _ S W
CH I P X8
M O T OR
A ( 1 0 )
A ( 9 )
A ( 7 )
A ( 5 )
A ( 3 )
A ( 1 7 )
A ( 1 5 )
A ( 1 3 )
A ( 1 1 )
AD ( 9 )
AD ( 8 )
AD ( 7 )
AD ( 6 )
AD ( 5 )
AD ( 4 )
AD ( 3 )
AD ( 2 )
AD ( 1 4)
AD ( 1 3)
AD ( 1 2)
AD ( 1 1)
AD ( 1 0)
AD ( 1 )
AD ( 0 )
A ( 1 9 )
RE S O UT
R I
CT S
VB A T T
VB A T T
RT S
_
IDLE
R E E D_ S W
S V C _L E D
C_ F
TX _ A UD I O
DP _ R X_ D A TA
DP _ T X_ D A TA
HP _ P WR
RI
CD
V_ F
RX _ A UD I O
S E L 1_ P A _O N
T R K _L O _ AD J
E L _ EN
L E D _O N
ON _ S W_ S E NS E
SV C _ LE D
EL _ E N
I_ O F FS E T
RT S
P A _ ON
DT R
C_ F
V_ F
VB A T T
L O C K
S C L
DP _ T X_ D A TA
C T S
C D
C_RX
_
QD(
2)
C_RX
_
QD(
3)
J A C K_ S
A( 1 : 19 )
C _ R X_ I D (0 : 3 )
C _ R X_ Q D (0 : 3 )
AD ( 0 :1 5 )
_ C H IP _ S EL E C T
C T L _I N
O N _ SW _ S EN S E
T X _ IQ _ D (0 : 7 )
R I N GE R
P S _ HO L D
Q_ O F FS E T
C T S
D T R
D P _ TX _ D AT A
A ( 2 0)
DP _ R X_ D A TA
D T R
A D ( 1 1 )
A D ( 1 0 )
A D ( 1 )
A D ( 0 )
C_RX
_ID(
3)
C_RX
_ID(
2)
C_RX
_ID(
1)
C_RX
_ID(
0)
A ( 9 )
A ( 8 )
A ( 7 )
A ( 6 )
A ( 5 )
A ( 4 )
A ( 3 )
A ( 2 )
A ( 1 9 )
A ( 1 8 )
A ( 1 7 )
A ( 1 6 )
A ( 1 5 )
A ( 1 4 )
A ( 1 3 )
A ( 1 2 )
A ( 1 1 )
A ( 1 0 )
A ( 1 )
A ( 0 )
V
_
F_C
ON
_
SLEE
P
C_RX
_
QD(
0)
C_RX
_
QD(
1)
T X _ AG C _ AD J
R X _ AG C _ AD J
P C M _S Y N C
P C M _C L K
S D A
P L L _D A T A
P L L _C L K
P L L _E N
C T L _C L K
TX_I
Q
_D(
7
)
TX_I
Q
_D(
6
)
TX_I
Q
_D(
5
)
TX_I
Q
_D(
4
)
TX_I
Q
_D(
3
)
TX_I
Q
_D(
2
)
TX_I
Q
_D(
1
)
TX_I
Q
_D(
0
)
A D ( 9 )
A D ( 8 )
A D ( 7 )
A D ( 6 )
A D ( 5 )
A D ( 4 )
A D ( 3 )
A D ( 2 )
A D ( 1 5 )
A D ( 1 4 )
A D ( 1 3 )
A D ( 1 2 )
11-1 LOGIC Circuit Diagram
11. Circuit Diagrams