2-4
Block diagram
Key board section
CD2
VFD
S501
KEY2
KEY1
Filament
AC3.3V
+5V
+5V
+5V
STANDBY LED
U500 SC6311
VFD CONTROL / DRIVER
KEY SCAN
SC6122
REMOTE RECEIVER
ENCODE VOLUME
4
5
D
ATA
CLK
STB
LED500
R503
680R
GVSW
CDR-W GAIN
CONTROL
+5V
VCC
JOG-A
JOG-B
DATA AND CONTROL
BUS
PICKUP
E
D
A
B
C
F
LD
U402 TA2153
RF AMPLIFIER
RF
RFPP
RFCT
FEO
F-
T-
T+
F+
U403 TA20
DIGITAL SERVO
U405 SRAM
128k x 8 (15
FOO
TRO
DMO
FMO
LIMIT SW
U401 TC9462
DIGITAL SERVO
1 BIT D/A CONVERTER
ADDRESS BUS
DATA BUS
VDD 3V
VDOT 3.3V
U404 TC94A02F
CD ROM DECODE
MP3 DECODE
D/A CONVERTER
CPU
87EP26F-4K76
L CH
R CH
SDA
REQ
SCL
U406
TC74HC14
EN500
3
2
1
+9V
U101
TA8189
4CH Pre+Rec
AMP with ALC
H CASS A
L CASS B
BIAS OSC
R/P SWITCH CIRCUIT
LOGIC DECK-TP
+9V
REC-E
H-PLAY
L-REC
IC602
TA2149BFN
IC600
TC9257 PLL
IF
STB
DATA
CK
L CH
R CH
L C
H
R CH
REC SIGNAL
OUTPUT
+9V
U201 TC9422F
SYSTEM E.VOLUME
(Tone control input
selector Main volume)
R832
10k
R83110k
+VC
-VC
IC801 STK402-050
When use head
the control volt
logic low le
LOW LOGIC DETECT
PROTECT ENABLE
Q860,Q861,Q864,Q865
SYS_MUTE
D803
IN4001
Q812
8050
Q813
8050
OVERLOAD
DETECT
PROTECT
ENABLE
L CH
R CH
AUX INPUT
Summary of Contents for MX-KB1 MX-KB2
Page 15: ... No MB284 1 15 Fig 23 Fig 24 f Front panel assembly N N Front panel assembly ...
Page 35: ...2 1 M E M O ...
Page 41: ...2 7 ...
Page 43: ...2 9 1 2 3 4 5 6 7 8 9 10 11 12 13 ...
Page 46: ...2 12 TC9462F U401 TO MCU CD section ...
Page 47: ...2 13 TOPICKUP TOCDDECK ...
Page 52: ...2 18 Main board forward side Printed circuit boards ...
Page 53: ...2 19 reverse side ...
Page 54: ...2 20 Display board forward side reverse side ...
Page 55: ...2 21 Tuner board forward side reverse side ...
Page 56: ...2 22 forward side reverse side Trans board ...
Page 57: ...2 23 M E M O ...