Kenwood KDC-X979, Service Manual

Page: 33 / 50

KDC-9026R/PSW9527
KDC-W9027/X979
33
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 out (exposed parts are acceptably
insulated from the supply circuit) before the appliance is returned to the customer.
• DC voltages are as measured with a high impedance voltmeter. Values may vary
slightly due to variations between individual instruments or/and units.
X16-2530-10/11 (3/3), X16-2080-10 (1/1)
AX AW AV AU AT
1
2
3
4
5
6
7
1.35V
3.3V
0V
0V
5.0V
0V
5V
0V
3.3V
0V
3.3V
0V
0V
3.3V
5.0V
2.4V
5.0V 2.4V
IC10
∗
IC1
SWITCH UNIT (X16-2080-xx)
: GREEN
KDC-9026R, KDC-PSW9527, KDC-W9027,KDC-X979 (2/3)
IC9
: BLUE
LED SW
∗
Q10
∗ D13
BR24C01AFV-W IC1
J1
EEP ROM
:
(X16-2080-xx)
Q9
IC2 : MX23L3213TG114
IC3 : MBM29LV004T-90
IC4 : S-816A34AMCT2G
IC6 : TC74HC4050AFT
IC7 : TC7WT126FU
IC8 : RS-171
IC9 : TC7WH32FU-F
IC1 : 703132GJ011-A
Q1 : 2SB1188(Q,R)
Q3 : 2SC2713
Q5,6,8 : 2SA1774
: DTC114EE
Q7
: 2SC4667 Q9
: 2SC4617
UMX2N
D1-5 : DA204U
1
(X16-2530-xx)
(GREEN)
GND LINE
B LINE
D14
Q11
LED SW
(RED)
SPECTRUM
ANALAYZER
BA3830F IC10 :
2SB1132 : Q2
2SA1163 : Q4
Q10,200
Q11
:
B30-1575-05 D13 :
B30-2233-05 D14 :
FL
CONTROL
GRADATION
FL BK SW
S-816A25AMCT2G IC5 :
6
1
10K ∗ R43
10K
∗
R42
240
10uH
F2-20 F2-19 F2-18 VDD2 VSS2 VSS1 VDD1 S03 S02 S01 CLK S11 S12 S13 F1-3 F1-2 F1-1
3 2
1
6 5 4 9 8 7
C25
2.2
C26
0.1
15
BK
14 13 10 18 17 16 20 19
16
78 77 76 75 74
47K
CP31 47K
CP32
F06 REL
V
VCC
10 12
11
F03 F04 F05
14 13 15
111
79
33K
R40
RST F01 F02
18 17
R39
C30
3
REIN
6 7 8 9
RSTC
BISC
GND
10
4 5
RENF
LNIN
R36
10K
R35
1 2
R02
R01
LNNF
R37 R38
270K 270K
10
TP1
TP2
TP3
TP4
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
N.C
PAN-DET
N.C
N.C
SDA
N.C
N.C
SCL
N.C
N.C
VDD
N.C
N.C
GND
N.C
∗
CP1
100
A1
4
3
GND
A2
1
2
A0
WP
SDA
SCL
VCC
5
6
7
8
MODEL NAME
No.
UNIT
KDC-X969
KDC-9023R
KDC-PSW9524
FX-9000
0-10
0-01
YES
NO
CP1 IC1
YES
NO
G22 G27 G28 G3 G30 G29 G31 GB G1 G2 G6 G4 G5 G7 G8 G9 G11 G10 G12 G14 G13 G15 G19 G17 G16 G18 G20 G21 G25 G23 G24 G27 G26 G28 G30 G29 G31 GC
R28
2.2K
2.2K
R29
R30
2.2K
F1
52 49 55 87
F2
22
108
NO
YES
A MODEL NAME
0-11
0-10
UNIT
No.
NO
YES
Q10
D13
NO
YES
∗ R41
180 R45
4.7
C32 C33
4.7
C34
4.7
100K
R48 330 R47
4.7K
R46
R44
100K
A1
Y2
GND
4
A2
B1
2
3
B2
VCC
Y1
1 8
5
7
6
0.1
C27
100 R49
85 43 18
22K
50
LA
T
11
12
GCP
10
+
5
10uH
L10
u10
37
+
38
.1
39
.1
C29
3300P
2.2
C31
73
R34
C28
22K
3300P
15K
4
R41-43
NO
YES
CP30
KDC-X879
FX-9100
KDC-X979
KDC-PSW9527
KDC-W9027
KDC-9026R
192x36 Dot Matrix
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