Block Diagram - Sony CMT-SP55TC Service Manual

3-2. BLOCK DIAGRAM

ST MUTE
FM 75Ω RDS INT
TUNER
RDS DATA
UNIT
STEREO
TUNED
G
ST CE
ST DOUT
AM
ST DIN
ST CLK
CN203(1/2)
REC L 6
8
REC R R-CH
MD-L
4
MD-R 2 R-CH
SYSTEM
CONTROL
5
TC-L
3
TO TC-SP55/
TC-R 1 R-CH
MDS-SP55
PDOWN
PDOWN 11
PCPON
PCPON 10
DATA
IIC-DATA 14
CLK
IIC-CLK 12
INPUT SELECTOR
J210(1/2)
AUXH-L X0
L
12
AUXL-L X1
14
TC-L X2
15
X3
11
AUX IN
R R-CH
CN205
CD L 1
CD R 3 R-CH
CD-KEY
CDKEY 5
LED0
PLAY LED
6
LED1
PAUSE LED 7
CD-DATA
DATA 8
CD-XLAT
XLAT 9
CD-CLK
CLOK 10
SYSTEM
HOLD
HOLD 11
CONTROL
SQSO
2 SQSO 12
SENS
SENS 13
(TO CDP-SP55)
SQCK
SQCK 14
SCOR
SCOR 15
CDM-SW CD-PWR
CD MSW 16
LOAD-IN
LOAD-IN 17
LOAD-OUT
LOAD-OUT 18
UNREG(L) 19 + UBREG(L)
+5V
4
09
IC401
INPUT SELECT/EVR
10 9
LSELO LIN
LOUT
ST-L L1
14
MD-L L2
13
CD-L L3
12
SEL-L L4
11
CONTROL
1 30 2
21
18 20 23 24 25 26 27 28 75 74 73
85 P-DOWN OUT
67 PCPON
30 IIC-DAT
29 IIC-CLK
IC202
X
13
A
10 61 FUNC1
CONTROL
B
9 60 FUNC2
58
6 FUNC INHIBIT
INH
44 43 42 41 40 39 38 37 35 34 33 32 19 95
BACK
D950-957
LIGHT
DATA
SCK
STB
LCD
DISPLAY
+5V UNIT
+5V
SWITCH
VDD
Q281,282
VREF
IC231
BUFFER
5 3 1
S923
TUNING
MODE
S922
TUNER/
IC901
S910
BAND
REMOTE
DISPLAY
S921 COMMANDER
RECEIVER
TUNING
–
S920
TUNING
+
90 89
IC701
MASTER
CONTROL
83
92 84 4 1 2 3
Q701,702
Q705,706
ILL(-7V)
LED
DRIVE
–7V
DPDATA
6
DPCLK
5
DPCS
+UNREG(L)
4
+5V
B+
+5V
1
SWITCH
Q704
3
5 5
J210(2/2)
Q221
R-CH
MUTE
CN201
8
R-CH 6
Q201
OUT
1
88 51
DSG-OFF
DSG-OFF 72 17
XPRE-MUTE
76 11
PRE-MUTE
HP-MUTE
HP-MUTE 77 10
ON/STBY
TA-STANDBY 78 13
P-RELAY
PWR-RELAY 79 9
S-RELAY
80 12
SP-RELAY
ENC0
86 15
VOL-ENC-A
ENC1
VOL-ENC-B 87 16
TA-KEY
KEY2 91
14
4
+5V
Q291
+10V
5
+10V REG
IC282
-7V 3 2 1
-7V REG.
IC281
+7V 3 1 3
+7V REG.
CN203(2/2)
IC283
Q301
+5V 3 1
+5V REG. +11V REG.
17
16
19
15
ST-SP55
L
AUX OUT
R
L
R
SYSTEM
CONTROL
1
(FROM TA-SP55)
DSG-OFF
XPRE-MUTE
HP-MUTE
ON/STBY/AMP-MUTE
P-RELAY
XS-RELAY
ENC0
ENC1
TA-KEY/HPSW
+5.6V(UNSW)
• R-ch is omitted due to same as L-ch.
+13.5V(REG)
• Signal Path
: FM
-UNREG
: CD
: MD
+UNREG(L)
: TAPE
: REC (TAPE/MD)
+UNREG(L)
-UNREG(L) SYSTEM
CONTROL
3
+UNREG(H)
TO TC-SP55/
MDS-SP55
D+5.6V(UNSW)