Sony CDX-S22, Service Manual

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16
16
CDX-S22/S22S
CDX-S22/S22S
3-2.
BLOCK DIAGRAM — MAIN SECTION —
1
ANT
7
TU-LCH
ELECTRONIC VOLUME
IC401
J1
(ANTENNA)
TU1
(TUNER UNIT)
POWER AMP,
MULTI REGULATOR
IC750
SYSTEM CONTROL
IC501 (2/3)
RDS RECEIVER
IC51
RESET
IC602
S702
RESET
CN601
6
TU-RCH
R-CH
BATT
FL
9
CD-LCH
8
CD-RCH
4 3
10
VCC8.3V
11
VDD5V
15
E2PVDD
13
TU-SCL
14
TU-SDA
6
S-METER
7
TU_MUTE
16
E2PSCL
17
E2PSDA
5
QUALITY
9
RDS
39
VSM
AU+8.3V R-CH TU+5V BU+3.3V
12
TUATT
25
EEP_CKO
24
EEP_SIO
38
QUALITY
8
MUTE_CON
AEP,UK MODEL
53
TU_ATTIN
77
RESET
L R
CD-L
R-CH R-CH
5 3
OUT-FL+ OUT-FL–
9 7
OUT-RL+ OUT-RL–
29 27
AMP-REM
R-CH
ANT-REM
35
VP
20
VP1
6
VP2
BATT
30 37
AUDIO8.3V
B.UP+B
31 33
SERVO3.3V
MECHA6V
34
PANEL+B
TU+5V
24
OUT-RR
29
MUTE
2
SDA
AU+8.3V BU3.3V SERVO+3.3V MECHA+6V DISP+B
4
SCL
SDA SCL
16
BEEP
22
STB
25
DIAG
AU+8.3V
15 13
7 10 12 11 16
1 9 2 4 3 5 6
30 31
SCL
SDA
SCL
SDA
SCL SDA
33
I2C_CKO
34
I2C_SIO
9
VOL ATT
5
BEEP
26
AMPSTB
8
DIAG
54
BUIN
SYS RST
BUS ON
UNI CLK
UNI SO
UNI SI
B/U CHECK
A ATT
73
TESTIN
ATT
12
IN_FL IN_RL
FL+ FL- RL+ RL- FR+ FR- RR+ RR- AMP-REM ANT-REM ACC ATT AEP,UK MODEL TEST
11
22
OUT-RL
MUTE
Q481
MUTE DRIVE
Q478,479
58
UNISI
59
UNISO
60
UNISCK
87
BUSON
88
SYSRST
72
ACC_IN
ACC CHECK
Q631
+5V REG
Q1
BATT
BATTERY CHECK
Q581,582
OVER
VOLTAGE
DETECT
Q580
MUTE
Q461
74
TELATT
SCL SDA
D479
FU601
R-CH R-CH
17 18
OUT-SUB-L
OUT-SUB-R
23
OUT-FL
25
OUT-FR
R-CH
L R
J330
AUDIO
OUT
REAR
D510
D512
D511
D580
BATT
D581
CD
SECTION
A
CD
SECTION
B
BATT
NS
MASK
Q22
B+ SWITCH
Q51
BU+3.3V
VDD
13
NSMASK
30
RDSON
56
DAVN
16
MPX
15
INTN
11
SCL
12
SDA
1
OUT
BU+3.3V
2
IN
SCL
SDA
9
10
X51
8.66MHz
XT1 XT0
86
MUTE
Q441
TEL ATT
Q651
• Signal Path
• R-CH is omitted due to same as L-CH.
: CD : FM : AM or MW
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