Read Sony HCD-BX7DAB (serv.man2) Service Manual online
HCD-BX7DAB
4
4
HCD-BX7DAB
2-2. SCHEMATIC DIAGRAM – USB Board –
R970
R971
R972
R973
R974
R975
R976
R977
R979
R978
R932
R982
R984
RB922
RB921
RB923
RB924
C907
C906
C921
R901
C901
R937
R983
C902
JR902
C903
C922
R907
R906
R905
R904
R903
R902
R917
R915
R913
C908
R919
C909
R916
C910
C912
R944
R943
R942
R941
C905
C904
R933
R934
R938
C915
C913
C914
R981
R922
R924
R923
R921
IC921
CN904
R926
R925
C920
IC915
C916
R920
CN905
CN902
EP901
CN908
FB901
C930
D905
D902
C918
C917
R946
R948
IC901
R928
D901
X901
R949
100
100
100
100
100
100
100
100
100
100
100
100
100
47
47
47
47
0.1
0.1
0.1
10k
0.1
100
100
10
16V
0
10
16V
0.1
4.7k
4.7k
4.7k
4.7k
4.7k
4.7k
0
10k
100k
0.1
100
22p
0
22p
10p
100k
100k
100k
100k
0.1
10
16V
0
10k
100
0.1
0.1
0.1
100
100k
27
27
100k
IS61LV6416-10T
7P
15k
15k
0.1
R5523N001BTR-F
0.1
10k
19P
4P
2P
0.1
4.7k
4.7k
0
9MHz
4.7k
A
1
3
A
1
4
A
1
5
D
0
D
1
D
2
D
3
D
4
D
5
D
6
D
7
R
D
W
R
L
B
U
B
S
R
A
M
-C
S
A8
A9
A10
D7
D4
D5
D6
WR
D0
D1
D2
D3
SRAM-CS
A11
A12
A13
A14
A15
LB
UB
RD
A7
A8
A9
A10
A11
A12
A4
A5
A6
D12
D13
D14
D15
A4
A5
A6
D8
D9
D10
D11
D12
D13
D14
D15
B
U
S
0
B
U
S
1
B
U
S
2
B
U
S
3
B
U
C
K
C
C
E
USB-SI
USB-SO
DO
U
S
B
-R
S
T
L
R
C
K
BCK
REQ
ST-REQ
A-IN
GATE
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
DO
DI
USB-SO
USB-SI
BCK
A-IN
GATE
REQ
ST-REQ
USB-RST
D
I
A7
A16
A
1
6
A1
A2
A3
A1
A2
A3
D11
D10
D9
D8
BOOT
AMO
TXD1
RXD1
R
E
S
E
T
BOOT
AM0
TXD1
RXD1
RESET
EN
FLG
EN
FLG
MC2837
MC2837
10
220
6.3V
TMP92CD28FG-2CB2
MC2837
D+
D-
AM0
DVSS
DVSS
RVO
UT1
RVIN
R
VIN
RVO
U
T2
DVSS
DVSS
DV
SS
AM
1
X2
DVSS
X1
VBUS-5V
DVDD3.3V
DVSS
LRCK
CCE
BUCK
BUS3
BUS2
BUS1
BUS0
USB-RST
ST-REQ
REQ
GATE
A-IN
BCK
VBUS-GND
BOOT
RESET
RXD1
TXD1
DVSS
VCC
AM0
DI(CTS)
DO(RTS)
USB-SI(RXD)
USB-SO(TXD)
NC
A6
A5
A4
A3
NC
I/O8
I/O10
I/O11
VDD
GND
I/O12
I/O13
I/O14
I/O15
A2
A1
A0
I/O9
NC
A7
A8
A9
A10
I/O7
I/O6
I/O5
I/O4
GND
VDD
I/O3
I/O2
I/O1
I/O0
A11
A12
A13
A14
A15
WE
CE
LB
UB
OE
A13
GND
D+
D-
VBUS
(CHASSIS)
EN
GND
OUT
IN
FLG
(USB)
(NC)
S-RAM
VBUS POWER ON/OFF SWITCH
A12
A11
A10
A9
A8
DVCC
A7
A6
A5
A4
A3
A2
A1
A0
D15
D14
D13
D12
D11
D10
D9
D8
DVCC
D
7
D
6
D
5
D
4
D
3
S2
D1
D0
DVSS
DV
CC
D
VC
C
D
VSS
N
O
U
SE
NO
U
S
E
N
O
U
SE
D
VCC
G
-3
N
O
U
SE
N
O
U
SE
DI
G-2
G-1
ST-REQ
REQ
DVCC
GATE
DATA
BCK
SCL
SDA
NO USE
RXD1
TXD1
CLOCK
DATA
DO
NO USE
USBPON
USBOC
DVCC
B
O
OT
N
O
U
SE
S
R
LU
B
S
R
LLB
RD
W
R
C
S2
DVCC
N
O USE
/CC
E
/BU
CK
BU
S3
BU
S2
BU
S
1
B
US
0
A
16
A15
A14
USB CONTROLLER
LR
CK
/R
ESET
0
FB902
0
(Refer to page 30
on service manual)
(Refer to page 28
on service manual)
L901
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