Read Sony D-F21 / D-F22ST / ICD-BP220 Service Manual online
23
D-F21/F22ST
IC401 TB2125F
VLGO1
48
INP1
47
RF1
46
INM1
DTC1D
VCC1(2.5V)
VCPU1(2.5V)
DCIN
RF4
INM4
RS
CHGSW
RI2
FI2
34
RI1
33
32
FI1
L4
VG
GND
5
SYNC
4
RSTB
6
CLOCK
7
8
DATA
WAKEUP
9
LATCH
FO1
31 MGND1
30 RO1
29 VD12
28 FO2
27 MGND2
26 RO2
24 VD23A
23 FO3
22 MGND3
21 RO3
20 VD34
19 FO4
18 MGND4
17 RO4
L1L
PGND1
L1H
VIN
STNG
BATM1
VREF
BATM2
CHGMNT
RF21
PAPC
VINDET
RF2
APCREF
INM2
49
50
51
52
53
54
55
56
57
58
59
60
62
63
61
64
1
2
3
LEVEL
SHIFTER
H BRIDGE
DRIVER 4
H BRIDGE
DRIVER 3
H BRIDGE
DRIVER 2
H BRIDGE
DRIVER 1
CONTROLLER
STANDBY
REFERENCE
BANDGAP
REFERENCE
(VREF)
CLK
OR OSC
SAW GEN
25 VD23B
45 44
43
41
40
39
38
37
36
CONTROL
CHARGE
VREF
VREF
VREF
DCIN
COMP OUT
MDP
SAW TOOTH
10
11 12
VG
VCPU
1/2 VREF
SAW TOOTH
SAW TOOTH
VREF
VREF
VCPU
CLK
VCPU
VCPU
VCPU
VCPU
VCPU
VG
VCPU
VCPU
VCPU
VCPU
VCPU2
VCPU
SUB VREF
SUB VREF
VCC1
VG
VCPU
DCIN
DCIN
VG
VCPU2
VCPU
VCPU
VIN
VCPU
DCIN
VG
VG
VG
VG
VIN
VCPU2
VCPU
VCPU2(2.0V)
42
DCIN
OEB
BIAS
INTERFACE
CLK
R-2
R-1
R-6
D-1 to 4
S-3
S-1
D-5
S-2
R-5
CHGON/OFF
35
13
FI3
14
RI3
15
PWM/FI4
16
PDL/RI4
VCPU2
R-4
VREF
VIN
VREF
VCPU
VCPU
VCPU
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