Sony SX-M700 Service Manual page 70

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MC34063AP1(MOTOROLA)
DC-DC CONVERTER CONTROLLER
-TOP VIEW-
8
C 1 8 C C IN
IN
5
– IN
E 2 7 SENSE
7
SENSE
3
V
CC
CT 3 6
CT
(+ 2.5 to + 40V )
GND
4 5 –
IN
INPUT
C IN ; DRIVE COLLECTOR
CT ; TIMING CAPACITOR
– IN ; COMPARATOR INVERTING
SENSE ; I PEAK SENSE
OUTPUT
C ; SWITCH COLLECTOR
E ; SWITCH EMITTER
8
C IN
5
–
– IN
+
S
1.25 V
REFERENCE
REG
R
Ipk
OSC
7 3
SENSE CT
MC34119P(MOTOROLA)
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LOW POWER AUDIO AMPLIFIER
—TOP VIEW—
CD 1 8 VO2
OUT OUT
FC2 2 GND 7
IN
FC1 3 V (+2 to +16 V) 6
IN CC
V 4 5 VO1
IN OUT
50 K
BIAS
CIRCUIT
50 K
2
FC2
–
125 K
#2
+
4.0 K
4.0 K
4
–
V IN
#1
3
+
FC1
SX-M700
MC34063M
IL00
1
C
2
E
1
C
Q
2
E
MC34119-M
IL08
4 5
V IN VO1
3 8
FC1 VO2
2 1
FC2 CD
INPUT
1
CD ; CHIP DISABLE
CD
V IN ; SIGNAL
OUTPUT
VO1 ; SIGNAL (–)
8
VO2 ; SIGNAL (+)
VO2
OTHER
FC1–FC2 ; BY–PASS CAPACITOR
5
VO1
MC74HC162N(MOTOROLA)
MC74HC4316N(MOTOROLA)
6-7