Kenwood GX-204KE Service Manual page 22

K
GX204KEF2/KHF2/LEF2
GX204REF2/SEF2
QQ
3 7 63 1515 0
PON5V
P-ON5V
0V or 5.0V
30
R823
ON REQ
4.7K
29
0V PON
0V or 5.0V
28
CDX RST
27 R894 1K
0V or 5.0V
BUSDO
0.3V
R895 1K
26
0V BUSDI
∗
R896 1K
25
MD MSTOP
∗
R897 1K
24
MD LO EJ
∗
0V or 5.0V
R898 1K
23
MD MOTOR
∗
R833 100
22
MD LOS
EJE SW
21
0V ICC/VPP
∗
R834 1K
20
MD MUTE
∗
R835 1K
0V or 5.0V 19
MD LOE
∗
LIM SW
R899 1K
18
MD MRST
R900 100
17
VOL SCL
R902 100
16
VOL SDA
5V
0V
TE
L 13942296513 R881
15
ILL DET-
4.7K
R882 4.7K
14
ILL DET+
5.0V
13
0V or 5.0V TELMUTE
12 0V
PON AM BYPS
0.3V
R885
11
0V BEEP
150K
10 0V
EVSS
9 5.0V
EVDD
R886 1K
8
0V or 5.0V CDX MTS
R887 1K
7
SH DATA S
R888 1K
6
SH DATA H
∗
R889
100
5V 5
MD SCL
0V
R890 100
4
TUN SCL
∗
R891 100
5V 3
MD SDA
0V
V
R892 100
2
TUN SDA
1
SP DATA S
8
10
93
11
www
9
22
X14-967x-xx (3/5)
L
11
3 4
1
5 6
16
16
R822
47K
Q801
TP801
R831 1K
27 6
26 5
R904 47K
25 ∗ ∗
C801 R812
0.1 470
24
∗
23
R813 47K
22
R876 47K
8
∗
20
R811 47K
∗
19
R814 2.2K
18
R901 2.2K
17
R903 2.2K
16 17
Q803 Q805
Q803,805
ILL
R905 47K
15
Q804
ILL DET
14
8
R906 47K
10
∗
R821 47K
12
C812
0.1
8
R909 47K
7
R910 47K
6 8
11
5
3
4 10
TP804
TP805
2
8
10 11
x ao
. i
M
∗
D
TEL MUTE
W591
R591
7.5K
1
1
16
17
10
ILL-
13.2V 5V
Q Q
3 6 7
9
BU5V-1
0V
7
0V
0V
MU
0V
LEVEL SHIFT
3.3V 5V
5V
9
0V
0V
11
5V
0V
3.3V
0V
u163
y
18 17 16 15 14
to FLASH WRITER
N
2 9 9 4
8
11
R410
33K
IC401
5.0V
6.8V
POWER
AMP
C414
11
R318 10K
1 3 1 5 0 5 8
46
MUTE
IC751
8 5.0V
1 VCC
D752
7
2
R752
100
6
3
5
4
GND
5.0V
D751
R303
2.7K
3.3V
0V
13
71
Q810
0V 0V
or or
5.0V 3.3V
IC952
11
IC301
Q808
MIDPOINT
ELECTRIC
5V 3.3V
POTENTIAL
(6.8V,4.0V)
0V
3.3V
0V
IC681-4
68
m
co
13 12 11 10 9 8 7 6 5 4 3 2
.
to 6CD MECHA (D40-2214-05)
O
2 8
9 9
3 4
6.8V
3.3V
6.8V
C416
7P 7P
C297 7P
R291
C291 4.7u16
R315 10K 220
28
R294 C294 0.068
25
220
C296 7P
16
17
10
2 9 9 4 2 8 9 9
9
R
Q301 Q303
Q304
IC301 6.8V
R305
(1/2)
R308
1K
3
1 2.2K
2
6
4
6.8V
D302
0V
VREF
R311
220
13.0V
IC301
(2/2)
4.1V
TP
4.1V 5 8
R309
7
6
3.3K
4.1V
D303
C207 100P
8.0V
C203 R203 R205
4.7u50 6.2 15K R209 15K
+
4.1V
IC201(1/
3 8
C201 R215 R201
1 4.1V
4.7u50 560 15K
2
C205
+ 4
100P
Lch
4.1V
R207 15K
CD ISO.AMP
0V
C208 100P
C204 R204 R206
4.7u50 6.2 15K R210 15K
+
4.1V
IC201(2/2)
5
C202 R216 R202
7 4.1V
4.7u50 560 15K
6
C206
+
100P
Rch
4.1V
R208 15K
1
CN4