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COMPACT COMPONENT SYSTEM
No.21121SCH
Nov. 2002
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
MX-K50 Area suffix
UW --- Brazil,Mexico,Peru
U --------------- Other Areas
SCHEMATIC DIAGRAMS
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-7~10
CD-ROM No.SML200211
MX-K50
SP-MXK50 SP-MXK50
CA-MXK50
D
I
S
C
C
H
A
N
G
E
C
O
MPU P
L
A
Y
C
O
N
T
R
O
L
STANDBY/ON
S
T
A
ND
B
Y
CD
-
R/RW P
L
AYBACK
TUNING
CLOCK
/TIMER
DISPLAY
PH
O
N
E
SR
E
P
E
A
T
R
E
C
S
T
A
R
T
/S
T
O
P
C
D R
E
C
S
T
A
R
T
DU
BB
I
N
G
PR
O
G
R
A
MR
A
ND
O
M
T
A
P
E
B
T
A
P
E
A
T
APE
CD
FM
/AM
A
C
T
I
V
E
B
A
SS
E
X.
L
E
V
E
L
S
O
UND
M
O
D
E
MX
-
K50
CD 2
CD 3
ACTIVE BASS EXT ENSION
CD
3
FULL - LOGIC CONTROL CD SYNCHRO RECORDING
AUX
CD 1
DISC
SKIP
V
O
L
UME
V
O
L
UME
+
–
S
T
ANDBY/
O
N
123
456
789
10
+10
S
L
EEP AC
T
IVE BASS
EX.
L
EVE
L
S
O
UND
M
O
DE
FM M
O
DE
T
APE A/B
KARA
O
KE ECH
O
FADE
MU
T
IN
G
FM/AM
AUX
CD
T
APE
RM
–
SMXK50U REMOTE CONT ROL
MX-K50
In regard with component parts appearing on the silk-screen printed side (parts side) of
the PWB diagrams, the parts that are printed over with black such as the resistor ( ),
diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
(This regulation does not correspond to J and C version.)
ABCD E F G
1
2
3
4
5
2-1
MX-K50
Block diagram
TUNER
AUX IN
AUX
AUDIO
AUDIO
TAPE P
TAPE P
TAPE P
TAPE R
TAPE R
TAPE R
TAPE P/R
CD
CD
MIC
MIC
MIC
MIC
MIC
TAPE R
IC301
MIC AMP
EIC1
ECHO IC
FIC4
FIC2
HIC1
FIC1
SOURCE
SELECTOR
& E.VOL
AIC2
STK402-120
UIC1
MICOM
IC201
DSP
IC301
4ch Motor-D
IC101 RF AMP. &
SS Processor
IC402 Motor-D
IC401 Motor-D
CON 01
JIC1
TAPE IC
HABC DEFG
1
2
3
4
5
MX-K50MX-K50
2-2
SHEET 1/5
TUNER signal
MAIN signal TAPE REC. signal
TAPE P.B. signal
CD signal
Main section
Standard schematic diagrams
To UCW6
Sheet 2/5 (5, A)
To CON01
Sheet 5/5 (2, B)
To CW106
Sheet 4/5 (5, G)
To MCW1
Sheet 2/5 (2, A)
To ACW1
Sheet 3/5 (2, B)
CW301CW302
FCW2
To ACW2
Sheet 3/5 (5, B)
CIRCUIT DESCRIPTION
Main
FL display & System control
Amp.
CD
Tuner
SHEET
NUMBER
1/5
2/5
3/5
4/5
5/5
Parts are safety assurance parts.
When replacing those parts, make
sure to use the specified parts.
MX-K50 ASIA MAIN
ABCDEFG
1
2
3
4
5
2-3
MX-K50
FL display & System control section
To UCW1
To UCW5
SHEET 2/5
To UCW2
To FCW3
Sheet 1/5 (5, A)
To ECW1
Sheet 1/5 (3, A)
To CW105
Sheet 4/5 (1, E)
To UCW7
MX-G500/K50 ASIA FRONT
HABC DEFG
1
2
3
4
5
MX-K50MX-K50
2-4
SHEET 3/5
MAIN signal
Amp. section
To RW2
Sheet 1/5 (3, G)
To FCW2
Sheet 1/5 (5, G)
Parts are safety assurance parts.
When replacing those parts, make
sure to use the specified parts.
ABCDEFG
1
2
3
4
5
2-5
MX-K50
SHEET 4/5
CD signal
CD section
To RCW6
SHEET 1/5 (3, A)
SHEET 2/5 (5, D)
Switch boardSensor board
HABC DEFG
1
2
3
4
5
MX-K50MX-K50
2-6
Tuner section
To FCW1
SHEET 1/5 (4, A)
FM/ TUNER signal
AM signal
SHEET 5/5
ABCD E F G
1
2
3
4
5
2-7
MX-K50
Main board
Headphone jack board
Main board
Printed circuit boards
Voice board
HABC DEFG
1
2
3
4
5
2-8
MX-K50 MX-K50
Front board
Front board
Front key board
CD switch board
Mic board
ABCD E F G
1
2
3
4
5
2-9
MX-K50
Fuse boardTrans. board
Power supply board
Amp. board
HABC DEFG
1
2
3
4
5
2-10
MX-K50 MX-K50
CD servo board Tuner board
MX-K50
< MEMO >
VICTOR COMPANY OF JAPAN, LIMITED
AUDIO & COMMUNICATION BUSINESS DIVISION
PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan
No.21121SCH Printed in Japan
200211
MX-K50
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