Sony MEX-BT2500 Servicehandleiding - Pagina 33
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5-6. 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
(Page 31)
AUX-GND
AUX-R
AUX-L
KEY-DND
D-GND
J901
AUX
MEX-BT2500
• See page 34 for Waveforms.
• See page 34 for IC Block Diagrams.
R931
220
R932
220
R933
220
D903
MA8180-M-TX
D992
MA8068-M-TX
CLK
LED931
NESW505CT-AST
D991
MA8068-M-TX
CE
(LCD BACK LIGHT)
D993
MA8068-M-TX
DATA
D994
MA8068-M-TX
Q931
D988
MA8051-M-TX
R934
RT1N140C
1.5k
D987
MA8051-M-TX
DIMMER
SWITCH
D989
MA8051-M-TX
D990
MA8051-M-TX
D998
Q932
0
RT1N436C
LED DRIVE
SWITCH
C988
0.1
FB901
100
FB902
100
FB903
0
R992
0
R901
R902
R903
820
1k
1k
S901
S902
S903
LSW901(1/2)
OFF
SOURCE
BLUETOOTH
EQ
R907
R908
R909
R910
820
1k
1k
1.2k
S904
LSW903(1/2)
LSW904(1/2)
LSW905(1/2)
LSW906(1/2)
SEEK+
SEEK-
MODE
DIM
ALBM -
DSPL
1
LED942
LED941
CL-197HB1E
CL-197HB1E
LED943
DISC SLOT
CL-197HB1E
R941
R942
ILLUMINATION
OFF
120
220
LSW902(2/2)
LSW901(2/2)
BTM
(US,CND,E)
BLUETOOTH
PTY
(AEP,UK)
EQ
CL-197HB1E
R943
R944
470
470
LED944
LED945
CL-197HB1E
CL-197HB1E
R945
R946
SOURCE
MODE
820
820
LSW903(2/2)
LSW904(2/2)
SEEK+
SEEK-
R947
R948
470
470
LSW905(2/2)
LSW906(2/2)
LSW907(2/2)
DIM
ALBM -
ALBM +
DSPL
1
2
R949
R950
120
220
LSW908(2/2)
LSW909(2/2)
REP
SHUF
LSW910(2/2)
3
4
5
R951
R952
120
220
R923
RE901
0
ROTARY ENCODER
PUSH SELECT/
(VOLUME)
R921
R922
0
0
R904
R905
1.2k
1.5k
LSW902(1/2)
BTM
(US,CND,E)
PTY
(AEP,UK)
R911
R912
R913
R914
R915
R916
1.5k
1.8k
2.2k
3.3k
3.9k
5.6k
LSW907(1/2)
LSW908(1/2)
LSW909(1/2)
LSW910(1/2)
LSW911(1/2)
LSW912(1/2)
SCRL
ALBM +
REP
SHUF
5
PAUSE
2
3
4
6
AF/TA
33
33
LSW912(2/2)
LSW911(2/2)
SCRL
(US,CND,E)
PAUSE
6
AF/TA
(AEP,UK)
R954
R953
470
470
LED953
LED952
LED951
CL-197HB1E
R962
R961
CL-197HB1E
330
330
LED951-953
ROTARY ENCODER
PUSH SELECT/
(VOLUME)
R975
D981
R981
100
MA8051-M-TX
150
C985
D982
R982
0.15
1SS355TE-17
150
C986
R987
0.22
1M
C971
0.1
C981
0.1
COM3
R988
C983
COM4
39k
0.1
S18
REMOTE CONTROL RECEIVER
IC971
C987
RS-770
0.001
R984
1k
C984
0.1
R985
1k
R986
1k
R977
100
CE
R978
100
CLK
R979
100
DATA
LCD901
LIQUID CRYSTAL DISPLAY
(US,CND,E)
(AEP,UK)
Note: Refer to the Servicing Notes "NOTE FOR REPLACEMENT
OF THE AUX JACK (J901)" (page 5), if replacing the Ref. No.
J901.
MEX-BT2500
S7
COM3
S7
S6
COM4
S6
S5
S18
S5
S4
VDD
S4
S3
VDD1
LCD DRIVER
S3
IC901
S2
VDD2
S2
LC75836E
S1
GND
S1
S33
OSC
S33
S32
INH
S32
S31
CE
S31
S30
CL
S30
S29
DI
S29