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<strong>HCD</strong>-<strong>GZR7D</strong>/<strong>GZR8D</strong>/GZR9D<br />
7-21. SCHEMATIC DIAGRAM – MIC/HEADPHONE Section – • See page 85 for IC Block Diagrams.<br />
A<br />
B<br />
C<br />
D<br />
E<br />
J851<br />
MIC 1<br />
J852<br />
MIC 2<br />
<strong>HCD</strong>-<strong>GZR7D</strong>/<strong>GZR8D</strong>/GZR9D<br />
1<br />
RV851<br />
50k<br />
MIC 1 LEVEL<br />
JR804<br />
E<br />
ET851<br />
MIC BOARD<br />
RV852<br />
50k<br />
MIC 2 LEVEL<br />
RV853<br />
50k<br />
ECHO LEVEL<br />
C891<br />
0.1<br />
C892<br />
0.1<br />
0<br />
2 3 4<br />
5<br />
6 7<br />
8 9<br />
10<br />
JR809 0<br />
R851<br />
R852 10k<br />
R853 1k<br />
JR803<br />
0<br />
10k<br />
JR801 0<br />
JR805 0<br />
R855<br />
10k<br />
R854<br />
1k<br />
C851<br />
0.01<br />
R856<br />
10k<br />
R858 R859<br />
10k 10k<br />
C875<br />
22<br />
16V<br />
C852<br />
0.01<br />
R860<br />
1k<br />
JR814 0<br />
JR815<br />
R880<br />
10k<br />
R881<br />
100k<br />
0<br />
C878<br />
1<br />
50V<br />
C854<br />
1<br />
50V<br />
C853<br />
1<br />
50V<br />
15<br />
MC1P<br />
MC2P<br />
16<br />
IC852<br />
NJM4558V-TE2<br />
(1/3)<br />
4.5<br />
4.5<br />
3<br />
2<br />
+<br />
-<br />
1 4.5<br />
R883<br />
47k<br />
R882<br />
10k C879<br />
C881<br />
220 10V<br />
C867<br />
0.1<br />
R861 1.5k<br />
C860<br />
1 50V<br />
2.5 2.6 5.1 2.5 2.6 0.1 0.9 0.9 1.9 2 5.1<br />
14<br />
MC1N<br />
MC2N<br />
17<br />
13<br />
ALC1<br />
ALC2<br />
C855<br />
4.7<br />
35V<br />
12<br />
NC<br />
NC<br />
C856<br />
47<br />
16V<br />
11<br />
VDA<br />
VSA<br />
10<br />
VREF<br />
MCO<br />
18 19 20 21 22 23<br />
9<br />
VRO<br />
IC851 TC9488FG<br />
R868 12k<br />
PRIN<br />
C862<br />
4.7 35V<br />
C857<br />
47<br />
16V<br />
R869 6.8k<br />
8<br />
NC<br />
R862<br />
100<br />
ADIN<br />
7 6 5 4 3 2 1<br />
VOL3<br />
NC<br />
24<br />
R863 100<br />
VOL2<br />
DAOUT<br />
25<br />
VOL1<br />
VOLST<br />
26<br />
R864<br />
100<br />
R865<br />
4.7K<br />
2.5 2.6 0 2.6 2.6 2.6 5.1 2.6<br />
C863<br />
1200p<br />
R867<br />
1.5k<br />
R871<br />
15k<br />
R870<br />
IC851<br />
MIC/ECHO<br />
C859<br />
1<br />
50V<br />
C861<br />
4.7<br />
35V<br />
3.9k<br />
C864 C866<br />
LEVEL AMP<br />
JR811<br />
0<br />
1 4700p<br />
390p<br />
IC852<br />
IC852<br />
NJM4558V-TE2<br />
MIC SIGNAL AMP<br />
C880 JR816 R884<br />
0.1<br />
0 15k<br />
50V<br />
4.5<br />
4.5<br />
(2/3)<br />
5<br />
+<br />
6<br />
-<br />
7 4.5<br />
R885<br />
22k<br />
C882<br />
0.1<br />
C885<br />
0.001<br />
C886<br />
4.7<br />
35V<br />
R886<br />
0<br />
R887<br />
100k<br />
NC<br />
NC<br />
27<br />
OSCR<br />
TEST<br />
28<br />
64<br />
POOUT OSCC<br />
29<br />
R888<br />
2.2k<br />
C889<br />
0.1<br />
C858<br />
68p<br />
VDD<br />
VSS<br />
30<br />
C868<br />
0.1<br />
IC B/D<br />
R890 0<br />
IC852<br />
NJM4558V-TE2<br />
(3/3)<br />
9 8<br />
POWER<br />
GND<br />
4<br />
R889<br />
2.2k<br />
64<br />
R872<br />
330<br />
R873<br />
330<br />
C869<br />
47 25V<br />
C870<br />
0.01<br />
D851<br />
UDZSNPTE-175.1B<br />
C887<br />
47p<br />
C888<br />
10<br />
16V<br />
R894<br />
10k<br />
R891<br />
10k<br />
R895<br />
27k<br />
R892<br />
10k<br />
R893<br />
6.8k<br />
ET852<br />
E<br />
CN852<br />
9P<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
CN851<br />
6P<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
O-MIC/HP-DET<br />
MIC+9V<br />
MIC-SIG<br />
MIC SCORE<br />
A-GND<br />
D-GND<br />
R-OUT<br />
HP-GND<br />
L-OUT<br />
HP-DET<br />
D-GND<br />
HP-Rch<br />
GND<br />
HP-Lch<br />
CASE GND<br />
G<br />
MAIN<br />
BOARD<br />
(2/4)<br />
CN101<br />
(Page 60)<br />
HP-DET<br />
D-GND<br />
HP-Rch<br />
GND<br />
HP-Lch<br />
CASE GND<br />
CN801<br />
6P<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
HEADPHONE BOARD<br />
C822<br />
0.1<br />
C824<br />
1000p<br />
R824 R822<br />
47 47<br />
R823<br />
47<br />
C823<br />
1000p<br />
R821<br />
47<br />
J803<br />
PHONES
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