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Kenwood LD-K300V Service Manual page 9

Video-cd ld player

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U
V
-5V
+5V
+5V
-14.2V
D30
0V
D29
R552 1M
L19
1.5uH
23
R544
R526 1K
X2
2.2K
16.9344MHz
16
17
C553
D35
2200P
18
15
MUTE
31
0V
-5.2V
Q59
64
SBCK
63
SFSY
0.6V
62
0V
PW
61
EFLG
+
60
R582
SBSY
0V
59
1M
4.9V
C576
58
220u10
R558
RVDD
+5V
+5V
12K
2.4V
57
RCHP
2.4V
56
RCHN
R554
55
4.7V
RVSS
12K
54
XVDD
+5V
+5V
2.0V
C578
53
2.1V
XIN
220u10
52
XOUT
R529
R581
150
1M
51
XVSS
50
LVSS
2.4V
49
2.4V
LCHN
R553
48
12K
LCHP
4.9V
47
0V
LVDD
+5V
+5V
46
MUTEL
0V
45
R557
1.7V
C2F
45
12K
R663 100
44
2.5V
44
43
R664 100
CK2
43
2.5V
2.5V
0V
R665 100
42
LRSY
42
41
R528
C575
DFLR
41
150
220u10
2.5V
0V
4.9V
(
9
)
+5V
-5V
+14V
-14V
W
X
-5V
+5V
5.0V
Q26
4.9V
INVETER
SWITCH
Q26
(KARAOKE/
(DC OFFSET
NORMAL)
Q56
ON/OFF)
5.0V
5.0V
+5V
R595
0.6V
Q46
5.0V
22K
R448
-5.2V
Q48
0V
C554
100
0V
5.0V
15P
0.6V
Q47
C555
0V
2200P
C531
0.01
-5.2V
-5V
R579
Q47,48
10K
BUFFER
(AC-3 SIGNAL)
-5.2V
Q58
R570 1K
+14V
0V
7.2V
+
R572 R564
IC30
L.P.F.
22K
16K
R584
C572
AMP
22K
150P
R560
R566
Rch
1.2K
1K
6
4
R586
R588
-
7
0V
27K
27K
5
+
R556
R568
0V
1.2K
1K
IC30
IC30
(4/4)
2
+
(1/4)
-
1
0V
3
1.6V
+
AMP
IC30
+
(3/4)
IC30
12
(2/4)
-
14
13
1.6V
+
0V
0V
0V
R555
R567
10
1.2K
1K
+
8
1.6V
9
-
R585
R587
11
R559
R565
27K
27K
1.2K
1K
Lch
R583
C571
-7.0V
L.P.F.
22K
150P
AMP
R571 R563
22K
16K
+5V
+5V
-5V
-5V
+14V
+14V
-14V
-14V
Y
Z
X34-2/2
-CN4
2/4
CAUTION: For continued safety, replace safety critical components only with manufacturer's
A
recommended parts (refer to parts list).
protection against risk of fire, replace only with same type and rating fuse(s). To reduce the risk of
W02
electric shock, leakage-current or resistance measurements shall be carried out (exposed parts are
-CN201
acceptably insulated from the supply circuit) before the appliance is returned to the customer.
4/4
B
The DC voltage is an actual reading measured with a high impedance type voltmeter. The
measurement value may vary depending on the measuring instruments used or on the product. Refer
X34-2/2
-CN5
to the voltage during LD PLAY unless otherwise specified; The value shown in ( ) is the voltage
measured at the moment of STOP. The voltage followed by (CD) refers to the value during CD PLAY.
2/4
CN11
1
AC3
C
2
MUTE
R627 100K
X25-B/6
D25
R628
-E3
(
10
)
3
S BUSY
330
R624
4/4
D24
330
(
)
9
4
S DATA
R625 100K
2SA954
D
2SC2003
2SC2878
5
VOUT
6
Rch
7
GND
8
Lch
TA8410AK
E1
E2
E4
2SK163
CA0002AM
RF
RF GND
V OUT
L
X32-2/2
F
B
2/4
NJM4565L
G
E
N
+5V
GND
-5V
uGND
+14V
14V GND
-14V
LD-K300V(M) (1/4)
AA
AB
indicates safety critical components. For continued
DTC124ESA
2SA1576
2SC2458
2SC2714
2SC4081
NJM2903M
DAN202U
DAP202U
NJM4565M
DA204U
HM62256BLFP12T
TC74HCT7007AFE
TC74HCU04AF
TC74HC00AFE
TC74HC14AFE
TC74HC74AF
NJU3715G
LC78630E
PD0011A-SP
TC4053BF
LA9425
LD-K300V
Y22-7123-00
AC
AD
UN4212
TC9210P
2SC3311A
UN5212
NJM2058M
LA9420M
PD0192A

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