Diagrams; Block Diagrams - Sony TCM-450DV Service Manual

SECTION 5

DIAGRAMS

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