9
9
M-450/455
4-1. BLOCK DIAGRAMS
SECTION 4
DIAGRAMS
3
4
14
6
5
11
9
2
5
6
14
15
4
13
7
1
16
DRIVE
FEEDBACK
EQ RC-
NETWORK
INITIAL
MUTE
Q105
OSC
LOGIC
CIRCUITY
S101 (4/4)
REC PB
S101 (3/4)
REC PB
RIPPLE
FILTER
15
8
ALC
MIC901
MIC
S101
(1/4,2/4)
REC PB
Q101
Q102
Q104
Q106
+VDD
M901
CAPSTAN/
REEL
MOTOR
HRPE901
REC/PB
HEAD
S601
OFF
PAUSE
ERASE
HEAD
+VCC
+B
U OUT
V OUT
W OUT
VCC
U
V
W
RV601
TAPE SPEED
(1.2cm)
RV601
+VCC
VCC
VREF
IN+
S/S
S902 (1/2)
TAPE SPEED
1.2cm 2.4cm
RV602
TAPE SPEED
(2.4cm)
S902 (2/2)
TAPE SPEED
2.4cm
1.2cm
PRE AMP
IC101 (1/2)
BTL POWER AMP
IC101 (2/2)
VREF
RF IN
PRE OUT
RF OUT
+VCC
PRE+IN
PRE-IN
POW+INA
POW-INA
POW+INB
POW-INB
POW
OUTA
PWB
OUTB
ALC IN
Q103
MUTE
MOTOR DRIVER
IC601
+B
S102
(POWER)
J101
EAR
SP901
(SPEAKER)
RV101
VOL
w
PAUSE
.
D301
BATT
J901
DC IN 3V
!
DRY BATTERY
SIZE "AA"
(IEC DESIGNATION R6)
2PCS, 3V
• SIGNAL PATH
: REC
: PB