Sony Walkman MZ-E300 Service Manual page 28

MZ-E300
IC901 XPC18A32FCR2
42 41 40
NC 43
SERIAL PASS
REGULATOR VA
VD 44
SERIAL PASS
REGULATOR VD
VC2
45
SERIAL PASS
REGULATOR VIF
XRST 46
CRST
47
48
RSTREF
VREF 49
VC
VB
50
VC
GND 51
VSTB VC
CLKSEL 52
VAIFON 53
FFCLR
54
SLEEP 55
CLK 56
1
28
39 38 37
XRST (INT)
VC
VC
BANDGAP
REFERENCE
VB
CONTROL
VSTB
VC VB
2 3 4 5 6
36 35 34 33
VG VG
POWER STEP-UP
SWITCH 1 PRE DRIVEER
VC
VG
PWER
SWITCH 2
7 8 9 10
32 31 30 29
VG
STEP-UP
PRE DRIVEER
VC
PWM
VC
VG
VG
VB VC VG
VG
VB
STEP-UP
START-UP DC/DC
CONVERTOR
STEP-UP
PRE DRIVEER
12 13 14
11
L1
28
27
RF1
INM1
26
DTC1
25
DTC2
24
RF2
23
INM2
22
PWM1
21
PWM2
20
VG
19
18
LG
PGND2
17
L2
16
NC
15