Sony TCM-50DV Service Manual page 15

QQ
3 7 63 1515 0
• IC Block Diagrams
IC101 LA4168ML
30 29
2.2k
EQ
300k
TE
L 13942296513
1 2
IC601 LB1877V
1
VOUT
WOUT 2
PGND 3
WB 4
VB 5
UB
6
www
OSC 7
OSC
START
COM 8
DET
GND 9
.
FEED
10
RI
BACK
http://www.xiaoyu163.com
28 27 26 25
30k
2k
ALC
20k
MIC
REC
5 6
3 4
DIRECTION
ANTI
LOCKING
CURRENT
PRE DRIVER DET
TSD
FREQ.
CHARC.
OPERATION LOGIC
ERROR
–
AMP
+
PULSE DET
SLEEP
DET
x ao
y
REF VOLTAGE
FOR SPEED CONTROL
i
REF
BIAS
VOLTAGE
http://www.xiaoyu163.com
8
24 23 22 21
PAUSE
MIC
VCC
Vref
VOX
VOX SPEED
Q Q
3 6 7 1 3
8
7 9 10
IC501 NJM2072M
20 UOUT
INPUT
1
19 DR
18
VCC GAIN CONT
2
17 LB
AMP OUT
3
GND
4
16 FC
IC301 MM1251M
OUT
15
14 VSP
IN+
13
u163
VREF
VREF
12
.
11 S/S
– 19 –
2 9 9 4 2 8
20 19 18 17
GVN
R/P
R, F
1
2
POWER
1 5 0 5 8 2 9 9 4
11 12 14
13
VCC
8
OUTPUT2
7
OUTPUT1
6
RECOVERY
5
TIME CAP
8 7 6
5
–
+
m
co
+
VOLTAGE UP
–
CIRCUIT
1 2 4
3
9 9
16
2 8 9 9
15