Panasonic SA-PM08 Service Manual page 111

SCHEMATIC DIAGRAM-15
L
MIC AMP CIRCUIT
2.5V 0.5V 2.5V 2.5V 2.5V
21 20 19 18 17
1/ 2Vcc
A/ D
MAIN LOGIC
16Kbit
SRAM
D/ A
GND Vcc
22 23 24 25 26
5.2V 0V 2.5V 2.5V
:POSITIVE VOLTAGE LINE
:NEGATIVE VOLTAGE LINE
:AUDIO SIGNAL LINE
:MIC SIGNAL LINE
HEADPHONE/MIC
H
JACK CIRCUIT
6
4
JK650
2
MIC
3
3.5mm
1
5
7
For [GK] area.
6
4
JK651
2
HEADPHONES
3.5mm 3
STEREO
1
5
7
For [GK] area.
IC450
M65853FPE1
DIGITAL ECHO/ MIC MIXING
2.5V 2.5V 0V 2.5V 2.5V
16 15 14 13 12 11
LPF
MIC
VOL
ECHO ECHO
F.B VOL. VOL.
STEREO
LPF
27 28 29 30 31 32
2.5V 2.5V 2.5V 2.5V 2.5V 2.5V
For [GK] area.
L653
1 7
L652
2 6
L650
For [GCS] area.
3 5
L654
4 4
For [GCS] area.
L655
5 3
For [GCS] area. L656
6 2
L651
7 1
CN650
For [GCS] area. C654 W650
100P
C459
100P
2.5V 2.5V 2.5V 2.5V
10 9 8 7 6 5
ALC ALC
MIC
VOL
MIC SW
R L (L+R)/ 2
PHASE
SHIFTER
SURROUND
VCFIL
33 34 35 36 37 38
2.5V 2.5V 2.5V 2.5V 2.5V 2.5V
CN450B
1 2 3 4 5
1 2 3 4 5
CN450A
R650
-7.7V 0V
100
4 3
R651
100
A
5 6
0V 0V
C105
B
22P
C
R652
100
D
Q450
2SC2712GRT5T
SWITCHING
0V
0.9V
R458
33K
R457
56K
2.5V 1.2V 0.9V
4 3 2 1
MCLK
-COM I/ F
39 40 41 41 42
2.5V 0V 0V 0V
C463
100P
C471 100P
C473 100P
R459 330K
R460 330K
R462 330K
R464 R455
330K 1K
6 7 8 9 10 11
6 7 8 9 10 11
E
F
G
H
I
2.1V
4.3V
J
Q101
KRC104STA
TUNER MUTE
K
L
R118
33K
M
C116
22P
N
0V 0V
2 1
IC101
M5218AFPE3
BUFFER AMP
7 8
0V 7.7V
C107
0.1
O
R117
33K
P
7.7V
-7.7V
12
12
5.2V