![background image](http://html.mh-extra.com/html/samsung/sch-620/sch-620_service-manual_1189708082.webp)
SAMSUNG Proprietary-Contents may change without notice
11-1
L OGIC/ AUDI O/ POWE R
SCH- 6 2 0 EX P
V _ I N
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0AV
+3.0AV
6
En g i n e e r :
QA CHK :
Pa g e :
D
SC
AN
_
1
SC
AN
_
2
Dr a wn b y :
SC
AN
_
4
9
8
R& D CHK :
G
Ad d r e s s
7
9
F
1 1
C
4
B
B
DOC CT RL CHK :
Si z e :
SC
AN
_
5
3
C
E
F
6
2
3
RE V :
7
COMPANY NAME
5
H
1 0
A
H
MF G ENGR CHK :
G
TI T L E:
1 0
1 9 9 9 . 0 9 . 1 6
l j c
D
1
Dr a wi n g Nu mb e r :
( K E Y- CON)
SC
AN
_
0
4
5
E
A
Ti me Ch a n g e d :
1
2
Ch a n g e d b y :
SC
AN
_
6
Ci t y
1 2
1 1
8
Da t e Ch a n g e d :
( BUZ Z ER)
1 2
SC
AN
_
3
CN1 0 1 - 1
1 2 1 8 A
A2
1
8 . 0
4 7 0 PF
C 1 0 2
L 2 1 0
4 7 0 PF
C 1 2 0
4 7 K
R5 5 3
C2 4 6
1 0 0 N F
C 1 2 2
1 0 NF
T P_ T C K
R 2 4 9
1 0 0 K
1
3
2
R 1 4 7 1 0 0 K
Q2 0 2
1 NF
C2 5 5
1 0 NF
C1 7 0
R 1 3 6
1 5 K
R2 0 3
0
1 0 NF
C 1 2 1
6 . 8 K
R 2 3 9
1 K
R 1 2 9
C2 5 2
1 0 UF
6 . 3 V
C2 0 7
1 0 0 N F
Z D1 0 2
1 0 0 N F
R2 0 1
Q2 0 3
NC
C2 1 0
C2 1 9
4 7 PF
4 7 K
R 1 0 4
N C
R 2 4 6
1 0 0 K
R2 0 8
C 1 3 3
1 0 NF
R 1 1 9
1 0 K
1 0 0 K
R 5 6 3
4 . 7 K
1 K
R 1 2 1
R 1 0 1
C 1 0 1
1 0 NF
T P_ MODE
1 0 UF
C2 1 6
4
5
6 . 3 V
J 2 0 1
1
2
3
L 2 0 3
1 0 0 K
R 1 4 6
R 1 0 3
1 0 0
1 0 0 K
C 1 1 4
R 1 5 1
T P_ T MS
4 7 PF
C 1 2 4
4 7 PF
C2 2 7
1 0 0 N F
1 . 2 K
R 1 2 4
4 7 0
R 1 0 6
R 1 8 0
3 3 0
1 0 0 N F
C2 1 4
1 UF
C 5 4 6
R2 0 9
2 0 K
R 1 3 0
1 2 0 K
1 NF
C1 1 0
4 7 0 PF
C 1 0 4
VSS1
6 E
1 D
VSS2
_ CS
3 G
2 G
_ OE
_ WE
3 B
I / O4
6 G
1 B
I / O5
I / O6
1 C
I / O7
1 F
1 G
I / O8
NC
3 C
1 E
VCC1
VCC2
6 D
5 A
A6
A7
5 B
6 A
A8
A9
1 H
3 A
CS2
6 B
I / O1
I / O2
6 C
6 F
I / O3
A1 5
5 G
4 G
A1 6
A1 7
4 F
3 F
A1 8
2 B
A2
A3
4 A
4 B
A4
A5
4 C
1 A
A0
A1
2 A
2 H
A1 0
A1 1
3 H
4 H
A1 2
A1 3
5 H
6 H
A1 4
1
3
2
U1 1 0
Q1 0 1
L E D1 0 1
1
3
2
C2 7 0
1 0 0 P F
CN1 0 2 - 2 4
Q2 0 8
1 0 0 N F
C2 2 2
D
206
3
1
2
N C
R 2 7 0
1 K
R 1 1 2
1 0 0 N F
C2 2 4
R 1 8 9
3 3 0
T P_ T D O
R 1 8 8
3 3 0
1 0 0 K
C 1 2 9
1 UF
1 0 V
R1 7 0
Z D1 0 3
1 0 0 P F
C1 2 8
R 1 5 01 0 0 K
6 . 3 V
1 0 UF
C2 6 0
1 0 0 N F
C1 2 7
7
_ WC
R 1 2 7
1 0 K
1 N C1
N C2
2
3 N C3
S CL 6
5
S DA
8
V CC
4 V SS
U1 0 5
1 K
R 2 5 3
R 1 1 3
1 0 0
1 0 NF
C 11 1
R 2 4 5
1 0 0 K
OUT
4
C 2 7 7
1 0 NF
U2 1 0
EN
3
2
GND
1
I N
5
C2 6 5
2 2 0 P F
Z D2 0 2
T P_ T E ST
2 0
R2 1 7
6 . 3 V
3 3 UF
C2 7 4
1 M
R 1 3 3
C2 2 5
1 0 0 N F
1 0 0 K
R 2 3 5
R1 1 0
1 0 K
1
U2 0 1 - 1
4
3
2
8
Q5 0 4
2
3
1
R2 4 8
1 K
R2 2 7
1 K
C2 7 6
6 . 3 V
1 0 UF
NC
C2 0 6
C2 6 1
1 0 0 N F
R 1 4 0
220nH
R 1 2 8
1 K
1 0 0
R 1 0 9
1 0 0 P F
C2 6 2
2 0 0 K
R2 0 5
T P_ T D I
C2 5 0
1 0 0 N F
6 . 3V
1 0 UF
C 2 35
U2 0 1 - 2
5
6
7
4 G
6 H
VS S 1
VS S 2
1 H
_ B Y T E
6 F
_ CE
1 F
1 G
_ OE
4 B
_ RE S ET
_ WE
4 A
5 E
DQ7
DQ8
2 F
2 G
DQ9
NC1
3 B
3 D
NC2
NC3
4 C
4 D
NC4
3 A
RY / _ BY
VCC
5 G
DQ1 3
DQ1 4
5 F
6 G
DQ1 5 / A - 1
DQ2
3 E
3 H
DQ3
DQ4
4 H
DQ5
4 E
5 H
DQ6
A7
5 B
A8
A9
5 A
DQ0
2 E
DQ1
2 H
DQ1 0
3 F
3 G
DQ1 1
DQ1 2
4 F
6 E
2 B
A1 7
A1 8
3 C
1 C
A2
A3
1 A
1 B
A4
2 D
A5
2 C
A6
2 A
1 E
1 D
A1
A1 0
5 C
5 D
A1 1
A1 2
6 B
6 A
A1 3
A1 4
6 C
6 D
A1 5
A1 6
U1 1 1
A0
R 2 4 7
C2 6 3
1 0 NF
1 0 0 K
R 1 4 9
1 0 0 K
1
Q2 0 7
2
3
6 8 K
R2 1 0
1 0 0 PF
6 . 3 V
C2 1 5
C 1 3 0
1 0 0 K
1 0 UF
R 1 4 5
R 1 8 3
3 3 0
R 1 8 2
3 3 0
2 4 K
R2 1 5
R 1 8 1
3 3 0
1 0 K
R1 3 9
4 7 PF
C2 2 6
R2 1 9
NC
1 0 0 N F
C2 5 1
C 1 0 7
1 0 0 PF
R1 4 2
2 2 K
Z D1 0 4
C2 2 3
1 0 0 N F
3
1
2
D2 0 5
1 K
R 2 5 5
1 0 NF
R 1 2 3
1 0 K
C 1 2 6
4 7 PF
C2 2 0
1 0 0 NF
1 0 0 K
R 2 5 0
C 2 8 1
1 0 0 NF
C 2 8 0
1 0 0 N F
R2 0 2
C2 1 7
R2 1 1
3 . 3 K
1 0 0 N F
1 F
_ CE
_ OE
1 G
_ RES ET
4 B
4 A
_ WE
3 B
NC1
NC2
3 D
4 C
NC3
RY/ _ BY
3 A
4 G
VCC
VSS1
6 H
1 H
VSS2
6 F
_ BYT E
3 E
DQ2
DQ3
3 H
4 H
DQ4
4 E
DQ5
DQ6
5 H
DQ7
5 E
2 F
DQ8
DQ9
2 G
2 E
DQ0
2 H
DQ1
3 F
DQ1 0
DQ1 1
3 G
4 F
DQ1 2
DQ1 3
5 G
5 F
DQ1 4
DQ1 5 / A- 1
6 G
A2
1 C
1 A
A3
A4
1 B
A5
2 D
A6
2 C
A7
2 A
A8
5 B
5 A
A9
6 B
A1 2
A1 3
6 A
6 C
A1 4
A1 5
6 D
6 E
A1 6
A1 7
2 B
3 C
A1 8
A1 9
4 D
U1 1 2
1 E
A0
A1
1 D
5 C
A1 0
A1 1
5 D
9 M
5N
_R
F
R
_ ROM_ CS1
1 4 M
1 4 N
_ ROM_ CS2
1D
_S
LE
E
P
8 C
_ T EST
4H
_T
X
_
C
L
K
X T AL _ I N
X T AL _ OUT
1 2 P
4M
YAM
N
1
5M
_C
T
S
3M
_G
P
_
C
S
1 3 N
_ HWR
_I
D
L
E
2M
1 2 N
_ L WR
1 2 L
_ RAM_ CS1
_ RAM_ CS2
1 1 L
_ RD
1 1 M
_ RESI N
VD
D
0
5F
5J
VD
D
1
VD
D
2
6E
6K
VD
D
3
VD
D
4
9E
VD
D
5
9K
VD
D
6
10F
VD
D
7
10J
1 2 B
WDOGS T B_ P CMSC S
1 0 L
WDOG_ EN
1 0 M
T RK_ L O_ AD J
3 K
T X_ AGC_ AD J
1H
T
X
_C
LK
TX
_
I
Q
D
A
T
A
0
1L
3J
TX
_
I
Q
D
A
T
A
1
TX
_
I
Q
D
A
T
A
2
2K
1K
TX
_
I
Q
D
A
T
A
3
4J
TX
_
I
Q
D
A
T
A
4
TX
_
I
Q
D
A
T
A
5
3H
TX
_
I
Q
D
A
T
A
6
1J
2J
TX
_
I
Q
D
A
T
A
7
R I NGE R
R X_ AGC_ AD J
1 M
10K
SL
EE
P_
XT
AL
_
I
N
11N
SL
EE
P_
XT
AL
_
O
U
T
4 K
S YNT H _ L OC K
T CK
7 C
2L
TC
X
0
8 A
T DI
T DO
7 A
TM
O
D
E
4D
5 B
T MS
3 N
3 L
P A_ R0
1 N
P A_ R1
1 1 B
P CM_ C L K
P CM_ D I N
1 2 A
1 3 A
P CM_ D OUT
1 1 C
P CM_ S YNC
PD
M
1
2P
3P
PD
M
2
2D
Q
_
O
F
F
SET
1 1 P
R ESOU T
4 N
13P
1 3 M
L NA_ GAI N
2 N
L NA_ R ANGE
2B
MO
D
E
0
MO
D
E
1
3C
NC0
1A
NC1
1P
14A
NC2
NC3
14P
P A_ ON
4 L
1 2 M
P A_ ON 2
8M
9L
GP
I
O
_
I
N
T
2
GP
I
O
_
I
N
T
3
10P
GPI O_ I NT 4
1 0 N
I
_
O
F
F
SET
3D
KEYS
EN
SE
0
2A
4C
KEYS
EN
SE
1
3B
KEYS
EN
SE
2
5E
KEYS
EN
SE
3
K EYSE NSE4
3 A
10A
L
C
D_
CS
LC
D
_
E
9N
GP
I
O
2
9
GP
I
O
3
4A
GP
I
O
3
0
5K
6C
GP
I
O
4
GP
I
O
5
5A
GP
I
O
6
6D
GPI O7
6 A
GPI O8
6 B
GPI O9
7 D
GPI O_ I NT 0
9 P
GP
I
O
_
I
N
T
1
6 M
5D
GP
I
O
2
6 N
GPI O2 0
GPI O2 1
6 P
GPI O2 2
7 L
7 M
GPI O2 3
7 N
GPI O2 4
GPI O2 5
7 P
GPI O2 6
8 N
GPI O2 7
8 L
GP
I
O
2
8
8P
GP
I
O
0
4B
GP
I
O
1
GPI O1 0
7 B
GP
I
O
1
1
8B
8 D
GPI O1 2
GPI O1 3
9 A
9 B
GPI O1 4
9 C
GPI O1 5
9 D
GPI O1 6
5P
GP
I
O
1
7
6L
GP
I
O
1
8
GPI O1 9
9J
GN
D
2
1
GN
D
2
2
10G
10H
GN
D
2
3
GN
D
3
6G
6H
GN
D
4
6J
GN
D
5
7E
GN
D
6
7F
GN
D
7
GN
D
8
7G
7H
GN
D
9
5C
GN
D
1
1
GN
D
1
2
8E
8F
GN
D
1
3
GN
D
1
4
8G
8H
GN
D
1
5
GN
D
1
6
8J
8K
GN
D
1
7
GN
D
1
8
9F
9G
GN
D
1
9
6F
GN
D
2
GN
D
2
0
9H
D 8
1 4 J
D 9
DP
_
R
X
_
DA
T
A
5L
4P
DP
_
T
X
_
DA
T
A
2E
FM
_
R
X
_
C
L
K
4E
F
M
_
R
X_
I
D
AT
A
3E
F
M
_
R
X_
Q
D
AT
A
F
M
_
R
X_
ST
B
1E
GN
D
0
5G
5H
GN
D
1
7J
GN
D
1
0
7K
1 3 H
D 1 2
D 1 3
1 4 H
1 3 G
D 1 4
D 1 5
1 1 G
D 2
1 1 K
D 3
1 2 K
D 4
1 3 K
D 5
1 4 K
1 1 J
D 6
D 7
1 2 J
1 3 J
C_
RX
_
I
DA
T
A
1
C_
RX
_
I
DA
T
A
2
3G
4G
C_
RX
_
I
DA
T
A
3
C_
RX
_
Q
DA
T
A
0
1F
2F
C_
RX
_
Q
DA
T
A
1
C_
RX
_
Q
DA
T
A
2
3F
4F
C_
RX
_
Q
DA
T
A
3
1 3 L
D 0
D 1
1 4 L
1 1 H
D 1 0
D 1 1
1 2 H
A 9
1 1 E
1 C
A DC_ C L K_ S BCK
A DC_ D AT A_ SBDT
1 B
A DC_ E NA_ S BST
2 C
1 0 B
A UX_ P CM_ C L K
1 0 D
A UX_ P CM_ D I N
A UX_ P CM_ D OUT
1 1 A
A UX_ P CM_ S YNC
1 0 C
2 H
C HI PX 8
C_
RX
_
I
DA
T
A
0
1G
2G
1 4 B
A 1 6
A 1 7
1 3 B
A 1 8
1 2 C
A 1 9
1 1 D
1 4 F
A 2
A 3
1 2 G
1 1 F
A 4
A 5
1 4 E
1 3 E
A 6
A 7
1 2 F
A 8
1 4 D
1 4 G
A 0
A 1
1 3 F
1 3 D
A 1 0
A 1 1
1 2 E
1 4 C
A 1 2
A 1 3
1 0 E
A 1 4
1 3 C
A 1 5
1 2 D
U1 0 4
R1 7 1
1 0 K
Z D2 0 3
VL R+
6
VL R-
5
NC7
NC8
2 2
NC9
2 3
VC
C
1 8
VC
C
A
4 1
4 2
VC
C
P
VF R+
3
VF R-
2
NC1
6
4 3
NC1
7
NC1
8
4 4
4
NC2
NC3
7
9
NC4
1 1
NC5
NC6
1 2
1 3
MI
C
3
-
1
NC1
2 7
NC1 0
NC1 1
2 8
2 9
NC1 2
NC1 3
3 2
3 5
NC1
4
3 9
NC1
5
4 0
8
L O
2 6
2 5
MCL K
MI
C
1
+
3 4
3 3
MI C1 -
3 1
MI C2 +
3 0
MI C2 -
MI
C
3
+
3 8
3 7
CI
1 9
CO
CS
-
1 5
DR
1 0
2 0
DX
F S
2 4
2 1
GN
D
3 6
GN
D
A
GNDP
U2 0 4
BZ
1 7
1 4
CCL
K
1 6
1 0 0 PF
C 1 0 6
R1 7 5
1 0 K
D2 0 4
DA2 2 1 T L
3
1
2
1 0 0 NF
C 1 2 5
2
3
1
Q2 0 1
C 1 4 1
1 UF
C2 1 3
3 3 UF
6 . 3 V
X 1 0 2
4 7 PF
C2 0 4
C 1 1 7
1 0 NF
2 2 K
R 2 5 2
C 1 6 1
2 7 PF
C 2 4 2
R 1 3 1 4 . 7 K
1 K
1 0 0 NF
R 1 3 7
1 UF
C2 1 1
R 1 4 3
6 . 8 K
R2 1 8
R 1 7 3
1 0 0 K
0
2 K
R2 0 7
1 0 0 K
C 1 3 1
1 0 0 NF
1 0 0 PF
C 1 0 5
R 1 5 2
C1 7 1
1 0 0 N F
SPK
NC
1 NF
C 1 1 5
1 NF
C 2 4 9
R 1 0 5
1 0 0
1 5 0
R 1 1 6
C 1 4 0
2 2 0 PF
R 1 8 6
3 3 0
R 1 6 01 K
0
R 1 7 4
C2 1 2
1 0 0 N F
R 1 3 5
6 8 0
C2 8 2
NC
3 3 0
R 1 7 6
C 1 1 6
C 1 1 9
8 . 2 NF
4 7 PF
C 2 5 4
C2 3 8
1 0 0 N F
1 0 NF
1 0 UF
C2 2 1
C 1 6 0
2 7 PF
Z D1 0 1
6 . 3 V
R 2 5 1
1 0 0 K
C 2 5 3
1 0 0 NF
N C
2 2 K
R 1 0 2
2
GND
1
I N
5
OUT
4
R 1 3 4
B M5 / T R
U2 0 8
EN
3
R 1 8 7
3 3 0
1 UF
C 5 6 5
Z D2 0 6
R 1 8 5
3 3 0
1 0 0
R 1 8 4
3 3 0
6 . 3 V
R 1 4 4
C 2 4 1
2 2 0 UF
3 . 3 NF
C 1 3 2
C2 0 3
4 7 PF
C 1 0 8
1 0 0 PF
3 3NF
NC
C2 3 6
GND
2
1
SRT
4
VCC1
VCC2
3
5
_ RE S ET
C 21 8
R2 2 5
2 2 K
U2 0 6
R 55 4
4 7K
C 1 7 3
1 0 0 NF
5 6 K
R2 2 0
5
6
2
4
1
N C
R 5 6 2
R 1 4 8
X 1 0 1
1 0 0 K
R2 1 2
1 0 0
R 1 0 7
1 . 5 K
SEND _ END
K EY_ 2
K EY_ 0
K EY_ 1
S CAN_ 0
V _ I N
H P_ PWR
ON_ SW
V BAT
V BAT
V BAT
AD( 0 : 1 5 )
_ ROM_ CS1
_ L WR
_ RES ET
MI C
V _ F
A( 1 : 2 0 )
AD( 0 : 1 5 )
_ L WR
_ ROM_ CS2
_ RD
_ RAM_ CS1
_ L WR
_ RD
AD( 0 : 7 )
A( 1 : 1 9 )
C T S
_ ROM_ CS1
_ RAM_ CS1
V I BRA T OR
_ RD
_ RD
A( 0 : 1 8 )
MI C
P S_ HOL D
ON_ SW_ SEN SE
V B A T
V _ I N
MODE
S END_ END
A L E RT _ L ED
_ WP
A( 0 : 1 9 )
A( 0 : 1 9 )
P A_ R0
BUZ +
T X_ A UDI O
_ RES ET
BUZ -
J ACK _ S
L EADS W
L EADS W
CHI P X8
S CAN_ 0
S CL
ADC_ ENA_ SBST
ADC_ DAT A _ SBD T
ADC_ CL K_ SBCK
_ HWR
KEYS ENSE _ 3
_ RAM_ CS2
T CXO_ N
_ ROM_ CS2
_ L WR
CO_ D I N
CO_ D OUT
PCM_ SYNC
PCM_ CL K
CT L _ I N
_ CHI P_ SE L ECT
CT L _ CL K
RX_ A UDI O
D P_ RX _ DAT A
R I
C D
R T S
D T R
R I
C D
R X_ AU DI O
T X_ AU DI O
ON_ SW
S CAN_ 3
S CAN_ 2
S CAN_ 1
V BAT
B UZ +
B UZ -
L ED_ ON
V I BRA T OR
S CAN_ 6
S CAN_ 5
S CAN_ 4
V BAT
C _ F
EL _ E N
L CD_ C S
_ I DL E
_ SL EE P
V _ F _ C ON
RT S
R I NGE R_ EN _
K EY_ 0
K EY_ 1
K EY_ 2
S CAN_ 6
S CAN_ 5
S CAN_ 4
S CAN_ 3
S CAN_ 2
S CAN_ 1
S CAN_ 0
R T S
C T S
D T R
C _ F
D P_ RX _ DAT A
V _ F
D P_ T X _ DAT A
H P_ PWR
K EY_ 2
K EY_ 1
K EY_ 0
D P_ T X _ DAT A
A ( 2 0 )
R I NGE R
S DA
P L L _ D AT A
P L L _ C L K
P L L _ E N
S EL _ P A_ ON
C ON_ S L EEP
_ RESE T
ON_ SW_ SEN SE
J ACK_ S
P S_ HOL D
T X_ AGC_ AD J
T RK_ L O_ AD J
P A_ ON
C T L _ I N
_ CHI P _ SEL ECT
A L ERT _ L ED
P CM_ C L K
P CM_ S YNC
AD( 0 : 1 5 )
AD( 0 : 1 5 )
C O_ DOUT
C O_ DI N
C T L _ C L K
T X_ C L K
A( 2 1 )
C_ RX _ I D( 1 )
C_ RX _ I D( 0 )
F M_ S T B
F M_ C L K
L OCK
R X_ AGC_ AD J
I MD_ CT L
D T R
DP_ T X_ DA T A
DP_ R X_ DA T A
C T S
C D
R I
I _ OF F SET
Q_ OF F SET
C _ RX_ QD( 0 : 3 )
C _ RX_ I D( 0 : 3 )
T X_ I Q_ D( 0 : 7 )
_ T X_ CL K
+3.0V
+3.0AV
+3.0AV
+3.0AV
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
VBAT
+3.0V
+3.0AV
+3.0V
+3.0V
+3.0V
+3.0V
+3.0V
11-1 Logic & Audio & Power Circuit Diagram
11. Circuit Diagrams
Summary of Contents for SCH 620
Page 75: ...9 Block Diagrams SAMSUNG Proprietary Contents may change without notice 9 1 9 1 Main Diagram ...
Page 77: ...SAMSUNG Proprietary Contents may change without notice 9 3 MEMO MEMO ...
Page 79: ...PCB diagrams Samsung Electronics 10 2 10 2 Main PCB Bottom Diagram ...
Page 80: ...PCB diagrams Samsung Electronics 10 3 10 3 CLC PCB Top Diagram 10 4 CLC PCB Bottom Diagram ...
Page 81: ...PCB diagrams Samsung Electronics 10 4 10 5 Hands free Kit PCB Top Diagram ...
Page 84: ...Samsung Electronics 11 3 Circuit diagrams 11 3 CLC Circuit Diagram ...
Page 85: ... Samsung Electronics Co Ltd APRIL 2000 Printed in Korea Code No GH68 00669A BASIC ELECTRONICS ...