Switch Unit - Kenwood KDC-205 Service Manual

U
KDC-205/CR, 226
KDC-2026, 3026/R
QQ
3 7 63 1515 0
1
SWITCH UNIT (X16-246x-xx)
2
3
TE
L 13942296513
4
ESD-GND
PANEL SW
SW5V
REMO
L-DATAS
X34-
J3
L-CLK
1/2
L-CE
A
L-DATAL
5
L-RES
RST
LED+B
ILL-GND
PAN 5V
D-GND
6
www
CAUTION : For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts list).
Indicates safety critical components. To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried
7
out (exposed parts are acceptably insulated from the supply circuit) before the appliance is returned to the customer.
22
X16-2460-21 (1/2)
V
∗
D36
∗
IC2
A
TP14
REMOTE
J1
CONTROL
15 IC
14
TP12
R10
TP13
47
5.0V
13 +5V
5V
TP11
R11
0V
12
R9 1K
IC2
TP10
1K
11 80
R8
TP9
470
10 79
R7
TP8
470
9 78
R6
TP7
470
8 77
R5
TP6
1K
7 76
S23
TP5
0V
6
RESET
TP4
5 +B
NC 4
TP3
3
R2
TP2
4.7
2 +5V
TP1
1
x ao
. i
W
Q Q
3 6 7
SW
Q1
10K
10K
65
KI1
66
KI2
67
KI3
68
KI4
69
KI5
70
+5V
C3 0.047
71
C4 0.047
72
0V 73
0V
74
R1 56K
C1
75
1000P
76
76
77
77
5V
78
0V
78
79
79
80
80
ESD-GND
OFF
ON
Q2,3
KEY
ILLUMINATION
SW
u163
y
+B
X
2 9 9 4
8
1 3 1 5 0 5 8 2 9
KI1
KI2
5V
0V
KI3
5V
KI4 0V
KI5
VDD
5.0V
VDD1
3.3V
VDD2
1.6V
VSS
LCD DRIVER
TEST
OSC
ON 5V
OFF 0V
5V
L-RES
0V
L-DATA L
5V
0V
L-CE
L-CLK 5V
0V
L-DATA S
∗
∗
Q2
Q3
m
co
.
Y
2 8
9 9
9 4 2 8 9 9
IC1