Sony WM-FX522 Service Manual page 22

WM-FX522
IC601 MM1279XVBE
1
V
PW 2
MOTIVE
W 3
CONTROL
GND 4
CIRCUIT
MOTIVE/
MOTIVE
OSC 5
OSC
LOGIC
DR 6
BIAS
7
VREF
SPEED
REFERENCE
CONTROL
START 8
VOLTAGE
INVERTER
VSP 9
IN+ 10
IC801 XC6383C251ML
CE CHIP ENABLE
1
VDD
V OUT V REF
2
+
–
NC
3
+
–
22
PRE DRIVER
SOFT SWITCH
CURRENT
CONTROL
OUTPUT
BIAS
–
+
VLx LIMITER
2 STEP PFM CONTROL
BUFFER
OSC 100/180 kHz
PV
20
19 U
18 PU
17
GND
16 VCC
FC
15
14 TC1
13 TC2
12 R1
11 OUT
LX
5
VSS
4