Sony CDX-MP70 Service Manual page 43

IC601 BA8270F
BUS ON
BUS ON
1
SWITCH
RESET
RST 2
SWITCH
BATTERY
BATT 3
SWITCH
4
CLK
5
VREF
DATA 6
GND 7
IC101 TL1451ACDB
16
VERF.
+2.5V
REFERENCE
VOLTAGE
+2.5V
SHORT
CIRCUIT
PROTECTION
COMPARATOR
+
+
–
VREF/2
TRIANGLE
OSCILLATOR
1 2
IC902 RRX9000-0601#1
L IN GND A
16 15
INPUT
SLAGE
1 2
L IN GND V STBY
L
14 VCC
13 RESET
12 BUS ON
11 CLK IN
10 BU IN
DATA IN
9
8 DATA OUT
15 14 13 12
VCC
–
+
ERROR
AMP2
VERF
VERF
VERF
S R R
LATCH U.V.L.O
+
–
ERROR
AMP1
3 4 5
V IN
14
320kHz
320kHz
/500kHz
AGC
BANDGAP
REFERENCE
3 4 5 6
VCC NC NC
IC653 LB1930M
IC654 LB1930M
VCC 1
BUFFER
NC 2
FIN
3
CONTROL
CIRCUIT
RIN 4
BUFFER
SGND 5
11 10 9
PWM
COMPA-
RATOR2
OUTPUT2
OUTPUT1
PWM
COMPA-
RATOR1
GND
6 7 8
GND
V AGC LNS VCO NC
C
13 12 11 10 9
NOISE
PULSE
SUPPRESSION
COUNTER
PULSE
FORMER
7 8
VPO NC
CDX-MP70
10 NC
OUT1
9
MOTOR
DRIVE
8 NC
CIRCUIT
7 OUT2
6 PGND
43