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TCM-20DV/21DV/22DV/23DV
– 9 – – 10 –
SECTION 6
DIAGRAMS
6-1. BLOCK DIAGRAM
MIC AMP, REC/PB EQ AMP
IC101 (1/3)
POWER AMP, VOR CONTROL,REGULATOR
IC101 (2/3)
05
• SIGNAL PATH
: PLAY
: RECORD
GVN OUT
VREF
MIC
VCC
Q106
REC/PB
MONITOR LEVEL
SWITCHING
SP901
(SPEAKER)
POW OUT 1
POW OUT 2
POW IN
REC B+
REC B+
REC B+
REC B+
PB B+
POWER ON B+
POWER ON B+
BATTERY B+
PB B+
REC B+
PB B+
PRE
OUT
PRE
NF
MIC IN
EQ IN
REC OUT
VREF
VREF
VREF
S102
(POWER)
S101 (4/6)
S101 (1/6)
HRP901
(REC/PB)
HE901
(ERASE)
Q101
AGC
CONTROL
GVN CONT
20
GVN VREF
19
VS
18
16
27
26
12
14
LED
DRIVE
24
PAUSE
22
MUTE
VCC
21
15
11
VOR
DELAY
7
R/P
SW
23
1
REC IN
3
2
29
4
ALC
CONT
5
28
J101
MIC
(PLUG IN POWER)
RV101
VOL
J102
EAR
MIC
AMP
EQ
AMP
POWER
AMP
VOX
REC/PB
PAUSE
MUTE
RIPPLE
FILTER
REFERENCE
VOLTAGE
GENERATOR
REFERENCE VOLTAGE
MUTE SWITCH
Q107, 108
REGULATOR
MOTOR
DRIVER
REC
AMP
ALC
BUFFER
Q102
MUTE
SWITCH
Q109, 110
NF
Q103
REC EQ
SWITCH
Q104
PB EQ
SWITCH
S101
(REC/PB)
PB
REC
S101 (2/6)
(REC/PB)
PB
REC
S101 (5/6)
(REC/PB)
PB
REC
OFF
ON
S101 (3/6)
(REC/PB)
PB
REC
+
PB B+
Q112
SWITCHING
Q105
VOR OFF
SWITCH
Q111
VOR ON
SWITCH
PAUSE .
S105
BATT
D101
OFF
HL
VOR
S104
DRY BATTERY
SIZE “AA”
(IEC DESIGNATION R6)
2PCS. 3V
CN101
DC IN 3V
–
+
MIC101
MIC
REC B+
REC B+
+
CAPSTAN/REEL MOTOR DRIVE
IC101 (3/3)
VCC B+
M901
(CAPSTAN/REEL)
M
RV601
THP602
DOUBLE NORMAL
REC TIME
S601-1
DOUBLE NORMAL
REC TIME
S601-2
SPEED CONTROL
RV602
S101 (6/6)
(REC/PB)
PB
REC
POWER ON B+
THP601
POWER ON
B+
TAPE SPEED
(NORMAL SPEED)
RV601
TAPE SPEED
(DOUBLE SPEED)
RV603