Kenwood LD-K300V Service Manual page 15

BS BT
SPINDLE
MOTOR
1/4
B
1
X34-1/2
-CN11
1/4
D
X34-2/2
-CN9
2/4
L
2 X34-2/2
-CN8
2/4
M
X34-2/2
-CN6
2/4
N
X34-2/2
3
-CN14
2/4
H
X34-2/2
-CN15
4
2/4
I
5
LA7133
TC7SHU04FU
6
CAUTION: For continued safety, replace safety critical components only
with manufacturer's recommended parts (refer to parts list).
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 acceptably insulated from the supply
7
circuit) before the appliance is returned to the customer.
BU BV
(X25- ) (C/6)
J4
R13 C5
MIC1 220 0.1u50 3
+
2
R17
560
J6 R12 100 R19 27K
MIC
C14 0.01
CONTROL
R21 100
R18
560 C8 120P
R20 27K
J5 6
R14 C6
MIC2 220 0.1u50 5
+
W11
W13
(X13-7400-20) (A/2)
CN1
LRCK 9 33
BCK 8 32
DATA 7 31 +5V
RESET 6 35
IFL 5 36
IFS 4 37
IFD 3 38
1
EMPH 2 39 C19 +5V
1u50 R6 R8
2.5V 2
MIC ECHO 1
+
22K 22K
R7 2.5V 3
C5
2200P 3.3K C3 4.7u35 4
CN2 C17
+
2.2u50 R9 R13 5
AR IN 1
+
27K 27K
R11
2.5V 6
AL IN 2 C7
560P 15K C4 4.7u35
7
GND 3 C18
+
2.2u50 R10 R14
8
+5V 4 +5V
+
27K 27K
4.9V
C12 R12 2.5V 9
MCK 5 C8
0.01 560P 15K 10
NC 6
11
DATA 7 28
C21
47u16
BCK 8 29
+
LRCK 9 30
C20
0.01
+5V
PQ20VZ11 LA9420MKMT RF5C292
indicates
BW BX
-9V
IC1
-10.0V
4
(1/2)
+
- 1
WH1
+
1 MIC SW
2
#
3
b
C7 120P C9 0.1
4 MIC1
L
5 -9V
6 G
C10 0.1
7 MIC2
8 +9V
-
7
+
+ IC1
8
(2/2)
10.0V
+9V
IC1
IC1 : NJM4565L
MIC AMP
D20,21 : 1SS133(8) or
HSS104(8)
4.9V
4.6V 4.6V 4.9V 4.2V
VDA1
33 2.5V
MIC1 LRCKI ( 33 )
32 2.5V
BCKI ( 32 )
LPFO1 31 2.5V
( )
SDI 31
R2 100
VRA2 30 2.5V
( )
LRCKO 30
2.5V
IC1
R3 390
AIL 29 2.5V
( )
BCKO 29
0.2V
R4 100
28 0V
( )
KARAOKE IC SDO 28
LPFO2
(KEY-CON/ 27
MCK1
VRA2 MIC ECHO)
26
4.1V
MCK2
AIR 25
2.5V CKS
24
LPFO3 VDD1
23
GNDA1 GNDX
2.3V
L1
2.5V 2.4V
+
+5V
IC1:TC9409BF-001
BY BZ
(X25- ) (B/6)
Q1~4
MUTE
C21
Lch 8 10u35 R31 R33 R37 82
GND 7 + 470 470
Q1 Q3
R29 R35
Rch 6
L3 4.7K 4.7K
WH3 VIDEO 5
100uH
D
SDATA 4
Q2 Q4
SBUSY 3 R30 R36
MUTE 2 4.7K 4.7K
C22
10u35 R32 R34 R38 82
AC-3 1
+
470 470
E3
R43
68
(X25- ) (D/6)
D2~12,22,23
Q6
D15,17
STANDBY LED D16
D18
STANDBY ON/OFF CONTROL
Q1~4
Q5,6
PH1
Q6 ED1
INVERTER
A1
Q5 E7
1
IC RESET
2
GND
3
+5V WH6
4.9V
S20
(POWER)
4
SI
5
KDO
(W02-2568-05)
CN201 SW101
ON
B
OFF
AC
110-240V
CN202
1
50/60Hz
BLU
N
BRN
2
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 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.
CA CB
J7
SYSTEM
CONTROL
SDATA
SBUSY
GND
SGND
J3
R41
75
AC-3
OUT
J1
1 L
2 R
J2
VIDEO
OUT
C30
0.01
: 1SS133(8) or HSS104(8)
: B30-2467-05
: B30-2430-05
: B30-2513-05(9)
: 2SC2878(B)(9)
: DTC124ESA or UN4212
: T95-0108-15
: 8-MT-114GK
: W02-2537-05
SIGNAL LINE
GND LINE
+B +B LINE
-B -B LINE