Read Sony SCD-XB940 (serv.man2) Service Manual online
12
12
SCD-XB940
2-4.
BLOCK DIAGRAM – AUDIO Section –
2
1
2
28
27
27
1
3
6
5
1
3
2
1
7
7
6
1
3
2
28
27
27
25
24
5
4
2
1
SWITCHING
CIRCUIT
SWITCHING
CIRCUIT
CONTROL
CIRCUIT
PHONE LEVEL
CONSTANT
CURRENT
CIRCUIT
CONTROL
CIRCUIT
CONSTANT
CURRENT
CIRCUIT
48
49
50
49
50
53
52
6
7
1
2
3
5
6
7
1
10
5
7
15
18
4
5
24
25
8
51
30
28
31
32
33
34
17
19
22
24
15
18
10
X321
45MHZ
12
13
XOUT
XIN
44
MUTING
CONTROL
Q303
RV601-1
PHONES
J601
ANALOG OUT
J301
PHONE LEVEL
RV601-2
RELAY
DRIVE
Q301, Q302
5
CD DATA,
CD BCK,
CD LRCK
CD BCK,
CD LRCK
SDATA L, SDATA R
LT64FSO
DIGITAL FILTER,
D/A CONVERTER
IC301
CD DATA
CD BCK
CD LRCK
SDATA L
SDATA R
256FSO IN
INIT
LATCH
SHIFT
DATA
DATA
MODE
(Page 10)
INIT, LATCH,
SHIFT, DATA, MODE
SHIFT, DATA, MODE
IN2–
IN2+
IN2+
IN1+
IN1–
IN1–
VEE1
VCC1
I01+
I02–
I02–
I01–
I02+
I02+
+7V
–7V
CIREF
+5V
CURRENT PULSE
IC401
CURRENT PULSE
IC501
I-V
CONVERSION
IC402
AUDIO FILTER
IC403 (1/2)
AUDIO FILTER
IC403 (2/2)
RY301
HEADPHONE
AMP
IC331 (1/2)
+7V
–7V
+5V
IN2–
IO1+
IO2–
IO2–
IO1–
IO2+
IN2+
IN1+
IN1–
VCC1
VEE1
I-V
CONVERSION
IC502
AUDIO FILTER
IC503 (1/2)
AUDIO FILTER
IC503 (2/2)
HEAD PHONE
AMP
IC331 (2/2)
R
L
DATAI
BCKI
LRCKI
BCKI
LRCKI
SDATA L
SDATA R
SBCKI
INIT
NREGCLR
LATCH
SHIFT
SCDATA
MODE
LVCK02
L1 (–)
L1 (+)
L2 (+)
L2 (–)
R2 (–)
R2 (+)
R1 (+)
R1 (–)
AMUTEZ
25
(Page 10)
26
(Page 10)
(Page 10)
27
28
(Page 11)
32
(Page 11)
33
CIREF
•
SIGNAL PATH
: SACD
: CD
05
MUTING
Q403
MUTING
Q503
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