Panasonic SA-XR10E Service Manual page 68

SCHEMATIC DIAGRAM-7
D
MAIN CIRCUIT
E
C303 R304
0.047 220
C304
4700P
D301
B0ADBH000001
B
H
K
N
D302
B0ADBH000001
25 26
:POSITIVE VOLTAGE LINE
12.1V
3.3V
Q
H
R303
22
48 47 46 45 44 43 42 41 40 39 38 37
3.3V
1.8V
1 MCLK IN DV 3 L 36
DD
3.3V 1.6V
2 AV DD 2 PWM AP L 35
2V
1.6V
3 PLL FLT OUT PWM AM L 34
0V
1.6V
4 PLL FLT RET PWM BM L 33
0V IC301
1.6V
5 AVss2 PWM BP L 32
C0ZBZ0000654
3.3V
6 NC DV 2 31
DD
3.3V DIGITAL AUDIO
1.6V
7 / RESET DVss2 30
AMPLIFIER
3.3V
1.6V
/ PDN
8 PWM AP R 29
0V
1.6V
VALID R PWM AM R
9 28
1.6V
M S PWM BM R
10 27
1.6V
NC PWM BP R
11 26
3.3V
3.3V
DV 1
12 DD DV DD 3 R 25
13 14 15 16 17 18 19 20 21 22 23 24
IC305
C0BBCA000040
VOLTAGE COMPARATOR
3.3V
3.3V
1 1OUT OUT3 14
3.3V
3.3V
2OUT OUT4
2 13
12.1V
3 Vcc GND 12
R327
0V 5.8V 1K
4 2IN- 4IN+ 11
5.8V 0V
5 2IN+ 4IN- 10
0V 5.8V
6 1IN- 3IN+ 9
5.8V 0V
1IN+ 3IN-
7 8
27 28 29
D
E
A
14
Vcc
R319
10
1
B
A
B
C
C
D
E
R318 10
C307 0.1
L
F
G
H
I
R317 10
14
Vcc
J
1
K
K
H
I
L
J
14
Vcc
R329
3.9K
1
C313
0.01
F
R337
G
100K
A
R335
100K
B
R333
100K
C
R330
100K
D
30 31 32
12.1V
3.3V
IC302
C0JBAA000149
AND GATE
3.3V 0V 1.6V 0.4V 0V 1.6V 0.4V
R352
13 12 11 10 9 8
100
R360
47
GND
2 3 4 5 6 7
1.6V 0V 0.4V 1.6V 0V 0.4V
R356
47
IC304
C0JBAC000262
NAND GATE
R342
100
3.3V 3.3V 3.3V 0V 0V 0V 3.3V
13 12 11 10 9 8
R346
47
R350
GND
47
2 3 4 5 6 7
0V 0V 3.3V 3.3V 3.3V 0V
IC303
C0JBAA000149
AND GATE
R387
100
3.3V 0V 1.6V 0.4V 0V 1.6V 0.4V
R395
13 12 11 10 9 8
47
R391
47
GND
2 3 4 5 6 7
1.6V 0V 0.4V 1.6V 0V 0.4V
R377
100
R381
47
R385
47
33 34
R351
3.3
A
B
R357
0.5V
1K 1.2V
Q306
0.4V
C
R353
0.5V
1K
1.2V
Q305
0.4V
Q305,306
B1ABDB000029
FILTER AMP
R341
3.3
D
E
R343
0.5V
1K
1.2V
Q301
0.4V
F
R347
0.5V
1K 1.2V
Q302
0.4V
Q301,302
B1ABDB000029
FILTER AMP
R386
3.3
G
H
R392
0.5V
1K
1.2V
Q314
0.4V
I
R388
0.5V
1K
1.2V
Q313
0.4V
Q313,314
B1ABDB000029
FILTER AMP
R376
3.3
J
K
R378
0.5V
1K
1.2V
Q309
0.4V
L
R382
0.5V
1K
1.2V
Q310
0.4V
Q309,310
B1ABDB000029
FILTER AMP
SA-XR10(E,EB,EG,GCS,GD,GN) MAIN CIRCUIT DIAGRAM
35 36