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Schematic Diagram - Key Board - Sony MEX-BT2707E Service Manual

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Q Q
3 7 6 3 1 5 1 5 0
4-6.

SCHEMATIC DIAGRAM - KEY Board -

CN901
15P
PANEL
+B
CLK-LCD
CE-LCD
DATA-LCD
R974
100
SIRCS
KEY-0
KEY-1
RE-1
RE-0
AUX-GND
(Page
27)
AUX-RCH
AUX-LCH
KEY-DND
D-GND
T E
L
1 3 9 4 2 2 9 6 5 1 3
J901
AUX
C998
1000p
w w w
MEX-BT2700/BT2707E/BT2750
• See page 30 for IC Block Diagrams.
R931
R1941
220
470
LED944
LSW912(2/2)
CL197HB1E-D-T
R932
220
DISC SLOT
DSPL
ILLUMINATION
SCRL
R933
220
R1942
1k
LED941
LED931
CL197HB1E-D-T
NESW505CT-
C990
0.1
(LCD BACK LIGHT)
D903
MAZ8180GMLS0
R1943
1k
CLK
CE
C991
DATA
0.1
D994
MAZ8068GMLS0
D993
MAZ8068GMLS0
D991
MAZ8068GMLS0
R1944
R942
D986
MAZ8068GMLS0
470
680
D985
MAZ8068GMLS0
Q931
RT1N140C-TP-1
R992
DIMMER SWITCH
0
R934
1.2k
D992
MAZ8068GMLS0
C995
0.1
C996
0.1
C997
1000p
R901
820
LSW901(1/2)
LSW902(1/2)
LSW903(1/2)
OFF
SOURCE
R907
R908
R909
R910
820
1k
1k
1.2k
LSW913(1/2)
LSW914(1/2)
LSW906(1/2)
LSW907(1/2)
SEEK-
LSW904(1/2)
LSW905(1/2)
-ALBUM
ALBUM+
SEEK+
MODE
1
CAT
BT2700:US,CND/
BTM
BT2750:MX
PTY
BT2700:AEP,IT,UK
AF/TA
/BT2707E
BTM
(BT2750:E,EA,IND)
x
a o
y
.
i
http://www.xiaoyu163.com
R943
R945
R947
R949
470
390
680
390
LSW905(2/2)
CAT
BTM
LSW913(2/2)
LSW914(2/2)
BT2700:US,CND/
SEEK-
BT2750:MX
LSW909(2/2)
SEEK+
SHUF
PTY
4
AF/TA
BT
BT2700:AEP,IT,UK
/BT2707E
LSW902(2/2)
LSW908(2/2)
BTM
OFF
REP
(BT2750:E,EA,IND)
3
R950
R951
680
220
LSW901(2/2)
LSW903(2/2)
LSW904(2/2)
SOURCE
MODE
LSW906(2/2)
LSW907(2/2)
-ALBUM
ALBUM+
R944
R946
R948
1
2
330
680
390
Q932
RT1N436C-TP-1
LED DRIVE SWITCH
Q
Q
3
7
6
C999
1000p
C922
1000p
RE901
ROTARY ENCODER
PUSH SELECT/
R922
R921
0
0
(VOLUME)
R902
R903
R904
1k
1k
1.2k
S901
SKRPACE010
BT
R911
R912
R913
R914
R915
1.5k
1.8k
2.2k
3.3k
3.9k
LSW908(1/2)
LSW909(1/2)
LSW910(1/2)
LSW911(1/2)
REP
SHUF
MIC
PAUSE
2
3
4
5
6
u 1 6 3
29
29
http://www.xiaoyu163.com
2
4
8
9
9
LSW910(2/2)
R981
R975
150
100
MIC
REMOTE CONTROL
5
RECEIVER
R982
150
IC971
IC RS-470
C971
0.1
VCC
GND1
S4
OUT
S3
R953
GND2
COM4
390
COM3
COM2
COM1
R954
680
S2
R987
C981
1M
0.1
R984
1k
R985
1k
LSW911(2/2)
PAUSE
C983
C984
R986
S1
0.1
0.1
1k
R952
6
180
CE
R977
100
CLK
R978
100
C986
0.47
DATA
R979
100
3
1
5
1
5
0
8
9
2
LED951
SL-194S-WS-SD
C921
1000p
R971
180
LED951-953
R905
1.5k
LED952
SL-194S-WS-SD
PUSH SELECT/
(VOLUME)
LED953
SL-194S-WS-SD
LSW912(1/2)
R973
DSPL
180
Q995
2SC3052
SCRL
R990
LED DRIVE
33k
LCD901
LIQUID CRYSTAL DISPLAY
Note: Refer to the servicing notes "NOTE FOR REPLACEMENT OF THE
AUX JACK (J901)" (See page 5), if replacing the Ref. No. J901.
m
c o
.
MEX-BT2700/BT2707E/BT2750
2
8
9
9
S21
S4
S21
S22
S3
S22
S23
COM4
S23
S24
COM3
S24
S25
COM2
S25
S26
COM1
S26
S27
S2
LIQUID CRYSTAL DISPLAY DRIVER
S27
S28
VDD
S28
S29
VDD1
IC901
S29
LC75826WH-US-E
S30
VDD2
S30
S31
VSS
S31
S32
OSC
S32
S33
INH
S33
S34
CE
S34
S35
CL
S35
S36
DI
S36
4
9
8
2
9
9

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