Sony CDX-A250 / CDX-A250EE Service Manual ▷ View online
25
25
CDX-A250/A250EE
CDX-A250/A250EE
• Refer to page 18 for Waveforms.
3-11. SCHEMATIC DIAGRAM — MAIN SECTION (3/3) — • Refer to page 32 for IC Pin Descriptions.
EXCEPT
AEP,UK
MODEL
(E,EA,CH,IND)
E,CH,IND MODEL
E,EA,CH,IND MODEL
EXCEPT AEP,
UK MODEL
EXCEPT AEP,UK MODEL
R636
R673
R512
C301
R583
R674
R582
R535
R536
R570
FB303
FB302
FB307
S502
D510
R513
R534
R557
R532
R550
R537
R549
R573
R528
D511
R505
R504
R563
R544
R568
R522
R521
JW145
JW146
JW127
R565
JC527
JW28
JC533
R520
JW148
JW86
JW125
JW120
R578
JW48
JW49
JW45
JW149
CN701
R661
R662
R663
R664
JW128
JW141
JW99
R691
JW140
R694
R585
R584
R301
R302
FB605
R509
R508
R503
R502
R533
C503
C511
R531
R517
R558
R518
R519
D503
R566
R539
R543
FB606
R675
R676
R677
R681
R601
R692
C343
FB305
C306
FB308
L301
FB304
C308
C310
C309
C510
C507
C508
C504
C509
C514
C501
C918
R541
R540
C519
FB603
R679
R567
R561
C502
JC504
R671
C512
R510
R756
R757
R577
R575
L501
R556
S702
C302
C917
R901
R902
FB309
CNP301
IC602
C513
Q580
Q581
Q582
X501
Q664
R672
R529
D512
D719
R564
X502
D502
JC501
D580
D581
C516
C516
R546
R545
R506
R538
R507
R551
C312
C305
FB501
R511
R514
R547
R542
FB604
IC501
FB310
(Page 21)
(Page 23)
(Page 24)
(Page 27)
Ver. 1.2
26
26
CDX-A250/A250EE
CDX-A250/A250EE
3-12. PRINTED WIRING BOARDS — KEY SECTION — • Refer to page 17 for Circuit Boards Location.
: Uses unleaded solder.
1
A
B
C
D
E
F
G
H
I
J
2
3
4
5
6
7
8
9
10
11
12
13
BLK
R
G
GND
R
L
L
BRN
BLU
BLK
BRN
BLU
1-868-120- (11)
11
1-868-121- (11)
11
1-868-121- (11)
11
1-868-120-
(11)
11
M >
SEEK+
LED906,S906
LED908,S908
LED907,S907
4/SHUF
PUSH DIAL SELECT
(VOLUME)
RE901
LSW915
5
LSW914
AUX
J901
3/REP
LSW916
6/PAUSE
LSW913
AF/TA
SCRL
LSW910
IC971
PTY
BTM
LSW911
SENS/BTM
SENS
(A250:AEP,UK)
(A250:AEP,UK)
(EXCEPT A250:AEP,UK)
(EXCEPT A250:AEP,UK)
(A250:AEP,UK)
(EXCEPT A250:AEP,UK)
LSW912
1/–
DSPL/DIM
MODE
LED909,S909
EQ3
LED903,S903
SOURCE
LSW918
2/+
GP/ALBM
LSW917
LED901,
S901
LED951
(CD SLOT)
LED931,932
(LCD BACK LIGHT)
LCD901
LIQUID CRYSTAL DISPLAY PANEL
B
MAIN BOARD
CN701
. m
SEEK–
LED904,S904
LED941–946
(RING ILLUMINATION)
LED902,
S902
OFF
LED952
(CD SLOT)
R961
R964
R965
R953
R954
R943
R947
R948
R958
IC971
R966
R967
LED951
LED945
LED942
LED943
LED952
S902
LED902
S904
LED904
S909
LED909
S903
LED903
LED907
S907
S908
LED908
S906
LED906
LED946
LED944
LED941
S901
LED901
LED932
LED931
R926
R968
LSW918
LSW917
LSW915
LSW914
LSW916
LSW913
LSW910
LSW911
LSW912
1
28
56
29
1
4
2
3
R901
R972
C971
R979
R981
R982
D981
C981
R984
R985
R986
C983
C984
C985
D982
FMB4
FMB3
R941
R942
R931
R932
R933
R934
Q931
D903
R974
R976
IC901
R906
R907
R909
R910
R911
R977
R978
R987
Q932
R902
R903
R904
R915
R912
R916
R914
R913
R908
D901
R905
R950
R949
C986
C921
C922
R959
R960
R944
R923
R924
R925
R935
CN901
R922
R921
R940
RE901
4
5
1
3
2
FB901
FB902
FB903
(Page 22)
Ref. No.
Location
• Semiconductor
Location
D901
I-10
D903
H-10
D981
H-7
D982
H-8
IC901
H-9
IC971
C-3
LED901
A-12
LED902
A-2
LED903
C-3
LED904
B-5
LED906
B-8
LED907
C-8
LED908
B-8
LED909
B-5
LED931
C-12
LED932
B-12
LED941
B-7
LED942
C-7
LED943
C-7
LED944
C-6
LED945
C-6
LED946
B-6
LED951
A-11
LED952
A-2
Q931
I-12
Q932
H-12
Ver. 1.1
27
27
CDX-A250/A250EE
CDX-A250/A250EE
3-13. SCHEMATIC DIAGRAM — KEY SECTION —
(Page 25)
(E, EA, CH, IND)
R901
R902
R903
R972
R904
R986
D901
R977
R978
R979
R941
D903
R966
R985
R984
Q932
R906
R907
R908
R909
R910
R911
R912
R913
R914
R915
R916
FB901
FB902
R976
FB903
CN901
R981
R982
R931
R933
R934
R932
R974
S901
S902
S903
S904
S907
S908
S909
LSW910(1/2)
LSW
911(1/2)
LSW
912(1/2)
LSW
913(1/2)
LSW
914(1/2)
R942
R943
R944
R947
R949
R950
S906
R921
C922
C921
R923
R922
R924
LSW
918(1/2)
LSW
917(1/2)
LSW
916(1/2)
LSW
915(1/2)
R953
R954
R958
R959
R960
R961
R965
R967
R964
C971
C981
C985
C986
IC901
R935
R905
IC971
C983
C984
D982
R987
J901
R940
R948
LSW912(2/2)
LSW911(2/2)
LSW910(2/2)
LSW916(2/2)
LSW917(2/2)
LSW918(2/2)
LSW915(2/2)
LSW914(2/2)
LSW913(2/2)
R968
LCD901
D981
RE901
R926
R925
LED931
LED932
Q931
LED951
LED901
LED906
LED908
LED907
LED904
LED903
LED909
LED942
LED943
LED946
LED944
LED941
LED945
LED902
LED952
LED942
LED946
LED944
Ver. 1.2
28
28
CDX-A250/A250EE
CDX-A250/A250EE
• IC BLOCK DIAGRAMS
IC1 BA5968FP-E2 (SERVO Board (2/2))
1
2
11
13
14
12
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
MUTE
FWD
FWD
LDCTL
NC
OPOUT1
NC
NC
OPOUT2
POWVCC
VCC
VOL–
VOL+
VOL2–
VOL2+
VO1–
VO1+
REV
OPIN4+
OPIN4–
OPOUT4
OPIN3+
OPIN3–
OPOUT3
MUTE
VOL+
GND
VOL3–
VOL3+
VOL4–
VOL4+
REV
OUTR OUTF
10
9
8
7
6
5
28
27
26
25
24
23
22
21
20
19
18
17
16
15
4
3
IC51 TDA7333013TR (MAIN Board (1/3))
VDDA
INTERPOLATOR
RAM
BUFFER
&
CONTROL
LOGIC
TEST LOGIC
&
PIN MUX'S
I
2
C/SPI
INTERFACE
BAND PASS
FILTER
SIGMA DELTA
CONVERTER
SINC4
FILTER
REF3
REF2
REF1
VSS
VDDD
RESETN
TM
1
MPX
16
CSN
SDAOUT
RDSREG
3
INTN
MPX
SINC4REG
SDAIN
SCK
SPI
TESTREG
SCK
SPI
TESTREG
14
2
3
4
5
6
7
8
INTN
15
SA_DATAOUT
13
SDA_DATAIN
12
SCL_CLK
11
OSCILLATOR
XTO
10
XTI
9
RDS
DEMODULATOR &
SYNCHRONIZATION
2
IC401 BD3806AFS-E2 (MAIN Board (1/3))
32
31
30
29
28
27
26
25
24
23
22
I
2
C BUS
LOGIC
VCO
MIX
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
FADER
(0~-58,
-∞dB)
VOLUME
(+23~-79dB,-∞dB
1dB STEP)
VOLUME
(+23~-79dB,-∞dB
1dB STEP)
INPUT GAIN
(0~15dB,1dB STEP)
INPUT SELECTOR
(3 STEREO INCLUDE 1 ISOLATION INPUT)
INPUT GAIN
(0~15dB,1dB STEP)
ANTI-ALIASING
FILTER
ANTI-ALIASING
FILTER
MUTE
fc:53.3kHz
fc:53.3kHz
MUTE
6
7
8
9
10
11
3
4
5
2
1
DGND
AGND
FIL
AN
AUX
LCH
TU
RCH
TU
LCH
CD
RCH
CD
LCH
AUX
RCH
NC
NC
NC
NC
NC
NC
NC
12
14
16
13
15
SDA
SCL
MUTE
SEL
ADJ
VCC
OUT
FR
OUT
RR
OUT
FL
OUT
RL
OUT
SUB R
OUT
SUB L
NC
NC
NC
21
20
19
18
17
VCC
VCC/2
TONE
PASS
PASS
BASS
fo:60,70,80,100,120,140,160,200Hz
Q:0.5,0.75,1,1.25
fo:60,70,80,100,120,140,160,200Hz
Q:0.5,0.75,1,1.25
MIDDLE
fo:500Hz,1kHz
Q:1
fo:500Hz,1kHz
Q:1
TABLE
fo:5,7.5,10,12.5kHz
fo:5,7.5,10,12.5kHz
TONE
PASS
PASS
2ND ORDER
LPF
2ND ORDER LPF
fc:OFF,80,120,160Hz
Q: 0.707
fc:OFF,80,120,160Hz
Q: 0.707
BASS,TREBLE, MIDDLE
(-15dB~+15dB,1dB STEP)
BASS,TREBLE, MIDDLE
(-15dB~+15dB,1dB STEP)
GAIN+ATT
(+10~-29,
-∞dB)
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