11
11
M-800V/850V
SECTION 5
DIAGRAMS
5-1. Block Diagram
Signal path
: PB
: REC
1
13
11 14
15
19
2
20
M
B+
(+3V)
M901
(MOTOR)
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION R03)
2PCS. 3V
DC IN 3V
J101
S102
(POWER)
UOUT
VOUT
IN+
S/S
VSP
OUT
DR
12
VREF
WOUT
2.4cm
1.2cm
OFF
ON
RV601
1.2cm
RV602
2.4cm
FAST PB SWITCH
DRIVER
STARTUP
DIR LOGIC
WAVEFORM
DET
LOCKING
PROTECT
STARTUP
DET
CURRENT
DET
SPEED
DET
REF V
OSC
BIAS
+
-
+
+
MOTOR SERVO
B+
B+
B+
S103
Q406
4
7
OUT
VCC
BATTERY LOW DET
HRPE901
REC/PB/ERASE
HEAD
(REC/PB)
(ERASE)
HRPE902
REC/PB/ERASE
HEAD
(REC/PB)
(ERASE)
S101 (4/6)
S101 (1/6)
1.2cm
2.4cm
MAIN BOARD
J102
MIC901
PRE
AMP
RIPPLE
FILTER
S501
VOR
1
7
16
15
IC101 (1/2)
PRE AMP
-
+
+
-
-
+
ALC
POWER
AMP A
POWER
AMP B
RF OUT
RV101
S101 (2/6)
S101 (6/6)
REC
PB
REC
PB
PB
REC
REC
PB
S101 (5/6)
J103
SP901
(SPEAKER)
S401
D402
D403
IC401
Q301
Q302
DIR
SWITCH
IC101 (2/2)
POWER AMP, ALC
Q602
1
5
8
6
IN
RCV
TIME
VCC
OUT1
IC501
SIGNAL LEVEL
SENSOR
Q501
MUTE
850V
Q701
BUFFER
Q702
CUE OSC
Q703 - Q705
CUE SWITCH
Q601
SWITCH
Q706
OSC
3
4
5
6
14
11
9
(DIR)
B +
S301
Q403
Q405
VOICE
MIRROR
Q402
Q401 (1/2)
D401
Q401 (2/2)
OUT B
OUT A
ALC IN
+ IN A
+ IN
- IN
OUT
S601 (2/2)
S601 (1/2)
IC601
S602
LED BOARD
OFF
ON
MIC
Q303,Q304
SWITCH
Q101
AMP
PB
REC
B+
S101 (3/6)
800V
850V
800V
PB
REC
MIC
(PLUG IN POWER)
VOL
TAPE SPEED
H
L
OFF
PAUSE
REC
850V
850V
CUE MARKER
BATTERY
TAPE
SPEED
TAPE
SPEED
TAPE
SPEED
FAST PB
850V
EAR
