Kenwood KDC-319/4019 Service Manual page 13

U V
SWITCH UNIT (X16-16xx-xx)
1
2
3
J1
ILL-GND 1
CP3
470
ESD-GND 2
L-DATAS 3 DI
D-GND 4
CLK
X89-
CE
J1
L-CLK 5
DO
N.C 6
1/2
L-CE 7
10.5V
4
LED+B 8 +10.5V
A
L-DATAL 9
R2
N.C 10
1K
L-RES 11 RES
REMO 12
RESET
S27
RST 13
N.C 14
FLIP DET 15
5
PAN 5V 16 +5V
Q2
IC2 POWER
SUPPLY SW
IC2
1 4
OUT GND2
0V 2 3
GND1 VCC
6
REMOTE
CONTROLLER
CAUTION: For continued safety, replace safety critical components only with manufacturer's recommended parts (refer to parts
list). indicates safety critical components. For continued protection against risk of fire, replace only with same type and rating
fuse(s). To reduce the risk of electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are
7
acceptably insulated from the supply circuit) before the appliance is returned to the customer.
W X
80
DI DI
79
CLK CL 5V
0V
78
CE CE
5V
77
DO DO 0V
76
RES RES
3.9V
C1 1000P 75
OSC 0V
R8 56K
0V
74
TEST
73
VSS
1.7V
C2 0.047
72
VDD2
3.4V
C3 0.047
71
VDD1
5.0V
70
+5V VDD
69
KI5 KI5
68
KI4 KI4
67
KI3 KI3
66
KI2 KI2
65
KI1 KI1
Q1
10K
1
10K
KEY SCAN START
KI1
S3
S21 S5
VOL+
3
KI2
S1 S2
S20 S6
VOL-
2
KI3
S17 S18 S9
Q2
S19
10K
1 EQ
10K
KI4
S22 S23 S25
C5
DISP
4 5
2.2
KI5
S24
5.0V
6
Y Z
25
S25 S25
26
S26 S26
27
S27 S27
28
S28 S28
29
S29 S29
30
S30 S30
31
S31 S31
IC1 32
S32 S32
(BOTTOM VIEW) 33
S33 S33
34
LCD DRIVER
S34 S34
35
S35 S35
36
S36 S36
37
S37 S37
38
S38 S38
39
S39 S39
40
S40 S40
+10.5V
S4 S7 S8
S11 S12
∗
A
FM
SRC
D20-22
LCD
S10 S13 S14
BACKLIGHT
AM
S15 S16
ATT
MODEL NAME UNIT No.
S26
KDC-506 (E)
X16-1672-70
KDC-5021 (E)
TI X16-1672-71
KDC-5021V (E)
KDC-5020R (M)
X16-1630-10
KDC-5021Y (E)
KDC-5021YV (E) X16-1630-11
KDC-319 (K)
KDC-4019 (K) X16-1630-12
KDC-5020 (M)
AA AB
∗
ED1
+10.5V
D7 D4
D10 D8 D5
D13 D12 D11 D9 D6
Q4
D1-13,18,19
KEY ILLUMINATION KEY RED ILLUMI SW
IC1 : LC75883E
IC2 : RS-171
Q1,2 : DTA114EUA
Q3,4 : 2SD2114K
∗
D1-13 :
D18,19 : B30-1564-05
D20-22 : B30-1571-05
+B
∗
D5-19
KDC-5021/5021V,506 (E/E,E) (2/2)
KEY ILLUMINATION C
KDC-5020R,5020Y/YV (M,E/E) (2/2)
KDC-319/4019,5020 (K/K,M) (2/2)
ED1 A B C D1-13
B38-1091-05 NO YES NO B30-1605-05
B38-1092-05 YES YES NO B30-1605-05
B38-1091-05 NO YES NO B30-1605-05
B38-1092-05 YES YES NO B30-1605-05
B38-1091-05 NO NO YES B30-1533-05
KDC-319/4019,5020
AC AD
∗
B
Q3
KEY
D1
GREEN
ILLUMI
SW
D2
D3
Q3
Q4
GND LINE
B LINE