Sony XDR-CD70DAB Service Manual ▷ View online
25
XDR-CD70DAB
IC781 BA5826SFP-E2
1
2
3
4
5
6
7
8
9
10
11
12
13
13
14
28
27
26
24
23
22
21
20
19
18
17
16
15
25
LEVEL
SHIFT
LEVEL
SHIFT
THERMAL
SHUT-DOWN
REGULATOR
BIAS TRAP
LEVEL
SHIFT
MUTE
LEVEL
SHIFT
D.BUFF
D.BUFF
D.BUFF
GND
IN4
IN4'
BIAS
VCC
VCC
IN3'
IN3
VO3(+)
VO3(–)
VO4(–)
VO4(+)
RESETt
OPIN
VO1(–)
REGB
VO1(+)
IN1
RESET
REGOUT
MUTE
GND
IN2'
IN2
VO2(+)
VO2(–)
GND
OPOUT
D.BUFF
D.BUFF
D.BUFF
D.BUFF
D.BUFF
REGULATOR
VCC
VCC
– MAIN Board –
IC802 TK11140CSCL-G
IC804 TK11145CSCL-G
IC804 TK11145CSCL-G
CONTROL
CIRCUIT
BANDGAP
REFERENCE
+
–
OVER HEAT &
OVER CURRENT
PROTECTION
1
VCONT
3
NP
2
GND
4
VOUT
5
VIN
26
XDR-CD70DAB
– VOL Board –
IC301 R2S15904SP
24
23
22
MCU
I/F
TONE CONTROL
L-CH BASS/TREBLE
SURROUND
21
20
25
26
27
28
INR4
LOUT
ROUT
AGND
VCC
REFIN
DATA
CLK
DGND
TRER
TREL
NC
BASSL2
NC
INR3
INPUT
SELECTOR
INPUT
SELECTOR
INPUT GAIN
CONTROL
INPUT GAIN
CONTROL
MUTE
MUTE
REF
MODE
SELECTOR
VOLUME
VOLUME
INR2
INR1
INL1
INL2
INL3
INL4
IGOUTL
VOLINL
IGOUTR
VOLINR
BASSR1
BASSL1
BASSR2
19
18
17
16
15
1
2
3
5
6
7
8
9
4
10
11
12
13
14
TONE CONTROL
R-CH BASS/TREBLE
1
7
8
9
10
11
12
3
4
+
–
+
–
VCC1
CH-1
CH-2
OUTPUT1
BOOT STRAP1
PRE GND
NF1
INPUT1
VCC2
OUTPUT2
BOOT STRAP2
RIPPLE
NF2
INPUT2
2
5
6
– AMP Board –
IC351 UTC8227 S
27
XDR-CD70DAB
•
IC Pin Function Description
MAIN BOARD IC801 uPD78F0547GC (S)-UBT-A (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1, 2
SHIFT-A,
SHIFT-B
O
Oscillation frequency selection on/off control signal output terminal
3 to 9
NC
-
Not used
10
RESET
I
System reset signal input from the reset signal generator "L": reset
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
11
XT2
O
Sub system clock output terminal (32.768 kHz)
12
XT1
I
Sub system clock input terminal (32.768 kHz)
13
FLMDO
I
Internal flash memory data writing mode control signal input terminal
14
EXCLK
O
Main system clock output terminal (8 MHz)
15
X1
I
Main system clock input terminal (8 MHz)
16
REGC
-
External capacitor connection terminal for regulator
17
VSS
-
Ground terminal
18
EVSS
-
Ground terminal
19
VDD
-
Power supply terminal (+3.3V)
20
EVDD
-
Power supply terminal (+3.3V)
21
LCD-SCL
O
Serial data transfer clock signal output to the liquid crystal display
22
LCD-SDA
O
Serial data output to the liquid crystal display
23
NC
-
Not used
24
O-C-ON
O
CD power on/off control signal output terminal "L": CD power on
25 to 33
NC
-
Not used
34
I-CD-OPEN
I
CD lid open/close detect switch input terminal "L": CD lid is closed, "H": CD lid is opened
35
O-BTCHK
O
Battery detection signal output terminal
36 to 39
NC
-
Not used
40
I-OFF/
ALRMRST
I
Front panel key input terminal (A/D input)
41
I-ACIN
I
AC in detect signal input terminal "H": AC in
42
O-NPNP
O
Buzzer power supply on/off control signal output terminal
43
O-C-RW
O
Data read/write selection signal output to the CD DSP
44
O-C-RSTX
O
System reset signal output to the CD DSP "L": reset
45
I-C-BUSY
I
Busy signal input from the CD DSP
46
I-C-SUBSYQ
I
Subcode Q data (80 bit serial) input from the CD DSP
47
NC
-
Not used
48
O-BUZ
O
Buzzer drive signal output terminal
49
NC
-
Not used
50
V-RXD/F-RXD
I
Serial data input from the DAB tuner mocule
51
V-TXD/F-TXD
O
Serial data output to the DAB tuner mocule
52
O-C-DAT
O
Serial data output to the CD DSP
53
I-C-DAT
I
Serial data input from the CD DSP
54
O-C-MCK
O
Serial data transfer clock signal output to the CD DSP
55 to 58
NC
-
Not used
59
AVREF
I
Reference voltage (+3.3V) input terminal
60
AVSS
-
Ground terminal
61 to 64
I-SW3 to I-SW0
I
Front panel key input terminal (A/D input)
65
I-BTCHK
I
Battery voltage detection input terminal
66
3.3V-CHK
I
Input terminal for DAB +3.3V power supply voltage detection
67 to 69
NC
-
Not used
70
RADIO SW
O
CD power on/off control signal output terminal "L": CD power on
28
XDR-CD70DAB
Pin No.
Pin Name
I/O
Description
71
O-V-CLK
O
Serial data transfer clock signal output to the electrical volume
72
O-V-DAT
O
Serial data output to the electrical volume
73
NC
-
Not used
74
O-AMUT
O
Audio muting on/off control signal output terminal "H": muting on
75
O-P-ON
O
Main power on/off control signal output terminal "H": power on
76
O-BRGHT-H
O
Brightness control signal output terminal (high)
77
O-BRGHT-M
O
Brightness control signal output terminal (middle)
78
O-ATS1
O
Serial data output terminal for ATS
79
O-ATS2
O
Serial data transfer clock signal output terminal for ATS
80
NC
-
Not used
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