Parts List - Kenwood 1050MD Service Manual

AE AF
Q Q
3 7 6 3 1 5 1 5 0
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.
+5V
+5V
5.2V
R286 1K
C230
5.0V
0.01
R237 330 C225
100P
R236 330 0V
C219
2.6V
0.01
13
C221 0.01
14
+5V
15
R231
2.3V 15
OFS
14
24K
S DAC 16
T E
L 1 3 9 4 2 2 9 6 5 1 3
13
2.6V
R232 5.6K
S GATE
12
R233 5.6K
SCK 17
11
S DATA
C220 R234 18
10
P/S
0.01 150
19
9 5.0V
+5V
NMODR
0V 20
( )
8 20
DRON
5.2V 21
7 ( )
21
NFRNT
5.2V 22
( )
6 22
NRAMRS
0V 23
5 2.6V ( )
23
LRCK I
24
4 0V
DATA I
3 2.6V
BCK I
2
MCKTH
1
NC
49
+5V +5V
28
DIGITAL REC(OPT/COAX)
INPUTS OUTPUTS
DIGITAL
ST SELECT A B Y(157A)
REC
H X X X L
L L L X L
L L H X H
L H X L L
L H X H H
X : Don,t Care
w w w
X
E1
DIGITAL
REC IN
AG AH
-33V
+5V
+5V
+5V
+5V
DIGITAL
PLAY
DIGITAL REC DIGITAL REC
(COAX) (COAX)
DIGITAL REC
(OPT)
+5V
5.2V
5.0V
R221
100K
C218
0V
DIGITAL
C217 1000P
PLAY
0.01
2.6V
NC
2.6V
AVDD 48
DGND
2.5V
47
R
DIN4
5.2V
AGND 46
DIN3
45
DIN2
44 5.2V
VIN 2.6V
DIN1
IC23
43
+5V
VCO DVDD
DIGITAL INTERFACE
R245
42 5.0V
REC SEL(OPT/COAX)
DVDD CL/SCLK 1
PLAY SEL(MD/EX)
330
41 5.0V
SBSY CE/XLAT 76
40 0V
PW DI/SWDT 2
39
SFSY DO
38 0V
SBCK SRDT 3
2.6V 37 5.2V
DGND LD/DOSY 49
2.4V 5.2V
0V
2.4V
R230 2.6V
100K
2.0V
+5V
R294 100K
0V
R293
D23
330
( )
15
R358 100K
R359
D22
330
( )
14
+5V
D35
D34
D26
C184
220P
C183
220P
x a o
X
J2 J5 y
. i
CYBER TITLER
SL16
SYS-CTRL
AI AJ
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 RECORDABLE MD PLAY unless otherwise specified;
The value shown in ( ) is the voltage measured at the moment of STOP. The voltage
followed by (REC) refers to the value during MD RECORDING.
-33V
D31
+12V
-12V
D32
10.9V
+12V
10.9V
IC1 +5V AVR
+12V
11.0V
IC2
D1
R27 1 R1 1
Q1
1/4W 1/4W
+12V
C2
100P
-11.6V
D2
IC3
Q Q
(1/2) 8
3 7 6
5.6V 1
+ +
IC3
4
+
ANALOG +5V
STABILIZATION
7.9V
4.8V
D7 D8
C26
+
C18 11.0V 5.7V 0.01
0.01
+5V AVR
Q7
D14
+6V
D15
6.3V
+ +
R12 C24 C27
D11
100 100P 0.01
+ +
DIGITAL +5V
9.3V
Q11 CONTROLLER
+5V
+
IC5
R33
+5V AVR
220
IN OUT
1/2W GND
2.5V
5.9V
-18.3V
+
-33.1V
D19 D20
+
C39
R22 2.2K 100P
-37.3V
Q13
-31V AVR
+5V
u 1 6 3
1 2 3 4 5 6 7 8 9
CN1
H
AK AL
2 4
8 9 9
(
)
28
R189 330
+5V +5V
(
)
11
+5V
+5V
+5V
-12V
+5V
11.0V
5.1V
+12V
Q5
POWER ON/STANDBY
5.1V
+5V
CONTROLLER
Q3
Q5
Q2
2 3 1 5 1 5 0 28 8 9
- R2 5.1V
3 1K
+
+
+
Q6
10.9V 14
4.8V
IC4
+5V
R9
IN OUT
46
GND 10K
+ +5V
RESET
5.0V
+5V
Q8
4.8V
+5V
5.0V 5.0V
42
R14
1K
+ +
+
11
+
Q9
Q10
13
MEMORY IC
ON/OFF
5.2V
CONTROLLER R188
330
81 ( )
12
R19
Q12
1K
+
R187
330
( )
8
+
-32.5V
-33V
m
+5V
c o
.
AM AN
2
8 9 9
X
CN10
1 2 3 4 5 6 7 8 9 10
X
R199
X
22K R194
22K
+12V
+5V
+
R97
470 0.3V
R96 4.4V
470
2.5V
2 4 9 8 2 9 9
X
B
7
+5V
15
BFS
14
S DAC
13
3
S GETE(MDT)
12
SCK(MCK)
11
S DATA(MLEN)
10
P/S
9
NNODR
8
DR ON
7
NFRNT
6
4 NRAMRS
5
LRCK1
4
DATA1
6
3
BCK1
2
MCKTH
1
R195
4.7