TCM-450DV
7
7
5-1. BLOCK DIAGRAM S
10
11
14
17
19
16
6
9
5
6
2
4
13
2
20
DRIVE
FEEDBACK
POWER ON
DETECT
Q901
LED
DRIVER
Q703, 706
BRAKE
SWITCH
Q601,603
F F OSC
Q704
OSC
LOGIC
CIRCUITY
S101 (5/6)
REC PB
RIPPLE
FILTER
7
1
REC
ALC
REC
VOR
START/STOP
SETECT
Q305,D301
SWITCH
Q804
J101
MIC
(PLUG IN POWER)
MIC1
MIC
S101
(2/6,3/6)
REC PB
Q301
M901
CAPSTAN/
REEL
MOTOR
D701
REC/BATT
D302
+B
REEL
PH801
HRP901
REC/PB
HEAD
HE901
ERASE
HEAD
+B
U OUT
V OUT
W OUT
VCC
U
V
W
TAPE SPEED
(NORMAL)
VCC
14
VREF
15
IN+
S/S
S601 (1/2)
REC TIME/
PLAY MODE
NORMAL
DOUBLE
PRE AMP
IC101 (1/2)
BTL POWER AMP
IC101 (2/2)
NC
RFLT IN
PRE OUT
RFLT
OUT
+VDD
PRE2 IN
PRE2 NF
22
REG
REG OUT
+VREF
SP IN
ALC IN
MOTOR DRIVER
IC601
SP1
(SPEAKER)
J102
EAR
S501
VOR
OFF
ON
RV601
RV601
TAPE SPEED
(DOUBLE)
RV602
RV602
RV201
RV201
S601 (2/2)
REC TIME/
PLAY MODE
DOUBLE
NORMAL
SPEED
CONTROL
FAST
SLOW
S101 (6/6)
PB
REC
S101 (4/6)
REC PB
S301
PAUSE
Q802
Q407
Q408
Q409
Q413
Q412
Q402
Q405
Q410
GATE
Q402,407,409
DIFFERENTIAL DETECT
ON
OFF
RV101
VOL
D702
2
3
+1.7V REG.
IC102
VOUT
VDD
2
1
LEVEL DETECT
IC701
VOUT
VDD
+VCC
+VCC
Q902
Q702
Q302
3
21
PRE1 OUT
PRE1 NF
PRE1 IN
+VREF
5
23
LED
DRIVER
Q701
+B
SWITCH
Q705
DELAY
SWITCH
DRIVE
Q602,604
REEL
ROTATION
DETECT
Q801,803
SWITCH
Q411
S102
(POWER)
J901
DC IN 3V
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
2PCS, 3V
S401
FF/REW
DETECT
S602
(FF/REW)
+B
SWITCH
Q404
+VCC
+VDD
+B
+B
BUFFER
Q401,403
GATE
Q805
S101 (6/6)
REC PB
Q303,304
MUTE
• Signal path.
E
: PB
a
: REC
SECTION 5
DIAGRAMS
