JVC MX-KB2 User Manual

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
45
DATA
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 TA2
0
DIGITAL SERV
O
U405 SRAM
128k x 8 (1
5
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
321
+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 CH
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 hea
d
the control vol
t
logic low l
e
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

JVC MX-KB2 Specifications

General

Brand	JVC
Model	MX-KB2
Category	Stereo System
Language	English