Parts List - Kenwood DV-K750 Service Manual

U V
+5V
+12V
-12V
IC20 (TRUE TABLE)
12 10 14
MIX Lch MIX Rch
KARA OUTPUT
H S31=S32 S41=S42 KARAOKE
L S31=S30 S41=S40 NORMAL
-12V
11.9V 11.9V
+12V
W155
0V
2 8
1 0V
-
3 ML
+
IC11
(1/2)
0V IC11
(2/2)
5
+ 7
MR
0V 6
-
0V
4
-11.9V
W156
-12V
IC31 (TRUE TABLE)
+12V
KARA OUTPUT
Lch Rch
12 10 14
IC15
H S31=S32 S41=S42 KARAOKE
R247
(2/2)
L S31=S30 S41=S40 NORMAL
10K
C222 0.01
-12V
11.9V
0V
C223 1000P
R245
0V
10K 6 8
7
-
5
+
IC31
INVERTER
SEL.
IC15
(1/2)
3
R246
+ 1 0V
10K
2 0.2V
-
4
-11.9V
0V W89 W84
R248
10K
-12V
D16
21 11.9V
20
+12V
0V
IC17
(1/2)
2 8
- 1
3
+
IC17
ADD
(2/2)
C104
5
0V 220u10
+ 7
0V 6 SW
11.9V -11.9V
- +
4
R115
-12V 10K
+12V
R113 C103 R262
62K 390P 100
SW
+5V +5V
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 acceptably insulated from the supply circuit) before the appliance is returned to the customer.
W X
+5V
+12V
-12V
0V
ELECTRIC VOL.
C219 R192
1u50 22K
C228 C227 IC21
100P 100P +
R190
-11.1V
C229
22K
100P
+12V
AGND
ADD
AMP
LEVEL
Lch DATA
SHIFT
LATCH
-12V
R193
22K
Rch DATA
LEVEL
LATCH
SHIFT
R191
22K
AGND
0V
11.2V
C220
1u50
( 1 )
+
( 6 )
C24
22u35
+
C168
560P
R216 9.1K
IC19
C167 C165
100P 560P
MUTE KEY CONTROL C169
100P
CONTROL MIC ECHO
(KARAOKE)
MUTE 1 12
LZ
13
- -
GND A2
C199
10u16 14
-
+
ADC
3ch
C174
4.7u35 2.5V
15
ADC
+
2ch
DELAY
RAM
C198
10u16 2.5V 16
+
-
C175
5.0V 17
+5V VDA2
0.01
TIMING
18
GENE.
RZ
C176 19
0.01 5.0V 20
DATA
+5V VDX
2.0V 21 I/O
2.2V 22
X2
12MHz
5.0V
MUTE 1
+5V
Y Z
+5V
+12V
-12V
CN5
WH1
MICSW
( 6 ) 6
MIC1
5
-B
-12V -12V 4
GND
+12V
C157 47P
3
R196 100K
MIC
C161 C162
IC22 MUTE +B
47u25 47u25 +12V 2
(1/2)
C159 MIC2
2
Q33 ( 1 ) 1
0.1
- 1
3
+
0V 0.4V
8
8.0V
+
11.2V
-11.1V
8.0V
0V
4
5
C160
+ 7
6
- 0.1
Q34
IC22
0.4V
(2/2)
MUTE
A MUTE (from DVD MAIN C.B.A) and MUTE 1 (IC602:
CONT.
R197 100K 8.6V
MODE
-11.1V
C158 47P
KARAOKE
Q32
Q31
0.6V
NORMAL
D10 +5V
-12V
-11.1V
MUTE
CONT.
+5V
4.2V
Q25
MUTE
MUTE 1
CONT.
4.2V
+5V
( 22 )
D3
Q5
5.0V
MUTE
R104 CONT.
3.3K
3.6V
( 19 )
-
44 C184
GNDL
43 0.01
VDL
D5
5.0V C185
42 Q11
VDD2
0.01
41
TEST +5V
MUTE
R103
40
EXTO CONT.
3.3K
39
EMP ( 20 ) 3.6V
( 20 )
R154
38 4.9V 220
14
D7
Q13
R153 220
37 0V
16
C225 100P
MUTE
4.9V R144 220 R102
36 CONT.
15 +5V
3.3K
C226 100P
( 21 ) 3.6V
35 4.0V R249 1K
( 21 )
17
C178
34
GNDD
D6
0.01
Q19
A MUTE
+5V +5V
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 dur ing PLAY unless
otherwise specified; The value shown in (
moment of STOP.
AA AB
DV-K750 ONLY
(X25-603X-XX) (H/10) 0-21: (M) TYPE 3-01: (C) TYPE
D291 C191 120P
JACK IN:-4.6V
R240 27K
NON JACK:-11.2V
IC29
MIC JACK IN:-4.1V (1/2)
C189 R234
MIC NON JACK:3.8V
R295 C193 3 0.1 220
1K 0.1 1 +
Q293
2
-
Q291 R297
E1
0V 4
10K
6
5 -11.1V
0.7V
4
-B -B
+
3
+
2
+B +B
11.2V
1
0.7V
Q293 R298
0V
MUTE DRIVE
10K
C194 8 6
(MIC JACK Q292
R296 0.1 7 -
SW OFF:OFF) 5 C190 R235
+
1K
0.1 220
IC29 IC29
Q291,292
MIC (2/2) 0V
MIC MUTE
AMP
(MIC JACK
R241 27K
SW ON:ON)
C192 120P
BUSY
( 11 )
28 PIN) ( 12 )
DVD A MUTE MUTE 1 A MUTE+MUTE 1 Q5,25 Q6,26 Q1-4,21-25
DATA
PLAY H H H ON ON OFF
STOP L H H ON ON OFF
PLAY H L H ON ON OFF
STOP L L L OFF OFF ON
D9
0V
C113
220u16 R157 R161 R165
( ML )
FRONT MUTE DRIVE + 220 Q21 220 150
R159 R163 -6.4V
Q21-24 1K 1K
-6.4V Q23
-6.4V
MUTE
Q26
R160 R164 -6.4V
1K 1K
C114
0V
220u16 R158 Q22 R162 Q24 R166
( MR )
+
R167 220 220 150
-6.4V
0V
1K
-6.4V
0V
FRONT MUTE DRIVE
R25 R29 R33
( FL )
-6.4V
220 220 150
Q1
Q6 R27 R31
Q1-4, -6.4V
7-10,
1K 1K
15-18 Q3
-6.4V
MUTE
R28 R32 -6.4V
-6.4V R171
1K 1K
1K 0V
Q2 Q4
R26 R30 R34
( FR
)
220 220 150
SW MUTE DRIVE
0V
-2.2V
0V 0V
Q12
R117 R121 R125
( SW )
220 Q7 220 150
R119 -2.2V R123 -2.2V
-2.2V R174 3K
1K 1K Q9
C MUTE DRIVE
-2.2V
R120 R124
-2.2V -2.2V
Q14
1K 0V 1K
Q8 Q10
R118 R122 R126
( C )
220 220 150
0V
-2.2V R172
0V
3K
R55 R59 R63
( SL )
220 220 150
Q15
S MUTE DRIVE
R57 R61
-2.2V
-2.2V 1K 1K Q17
-2.2V
Q20
R58 R62 -2.2V
1K 1K
0V
R56 Q16 R60 Q18 R64
( SR
)
R177
-2.2V 220 220 150
0V
3K
4.9V
WH2
R179
Q27
AGND 5 5
220
AGND 4 4
C137 R180
D5V 3 3 0.1 180
2.4V
GND 2 2
Q28
F
958 1 1
DV-S700/(K) (1/2)
DV-K750/S700
) is the voltage measured at the
Y22-7430-10
AC AD
X25-D/10
-CN601
2/2
A
X25-B/10
J5 -E3
MIC1 2/2
B
J6
MIC2
D11
P1
J1
SYSTEM
CONTROL
J4
1 Lch
MIX LINE
OUTPUT
2 Rch
J2
C
1 Lch
FRONT
2 Rch
3 SUB WOOFER
6CH.
OUTPUT
4
CENTER
5 Lch
SURROUND
6 Rch
X25-B/10
-E4
A1
2/2
C138 1
GND
0.1 2
OPTICAL
VCC
3 C
IEC
DIGITAL OUT
J3
R181 X25-D/10
(PCM/AC-3)
22
-CN602
COAXIAL 2/2
D
DV-K750(M) (1/2)