Block Diagram -Power Supply Section (Former Type) - Sony Walkman D-E220 Service Manual

D-E220/E225/E226CK
5-4. BLOCK DIAGRAM — POWER SUPPLY SECTION (FORMER TYPE) —
VCPU +2V
DVDD +2V
AVDD +2V
VCPU +2.5V
SYNC
(Page 12) A
SDTO
(Page 12) B
SCK
C
(Page 12)
POWER CONTROLLER
IC401 (3/3)
+2.5V
STNG
POWER
54
SWITCH
Q412
INP1
48
DTC1D
45
SWITCHING
VLGO1
49 POWER
CIRCUIT 2
SWITCHING
CHGMHT
57 POWER
CIRCUIT 6
VCPU2 (2.0V)
VCPU2 (2.0V) CHARGE
42
CONTROL
VCPU1 (2.5V)
CHG ON/OFF
VCPU1 (2.5V)
43
CHARGE
SWITCH
POWER
CONTROL
Q406,410,411
SYNC CLK
5
OR OSC
WAKEUP
6
DATA
8
INTERFACE
CLOCK
7
LATCH
9
RSTB
4 AMP
VREF
58
46
13 WAKEUP_O
SYSTEM CONTROLLER
VIN
53
BATM1
55
BATM2
56
CHGSW
37
E225
RS
CHARGE
38
RF4 SWITCH
40
Q404, 409
DC IN
SAWTOOTH
DC IN
GENERATOR
DCIN
REGULATOR
41
Q401,402,413
L4
SWITCHING
1
POWER VG
2
CIRCUIT 5
D406
STANDBY
REFERENCE
BIAS
BANDGAP
REFERENCE
(VREF)
WAKE-UP RESET
SWITCH
Q408
D407
15 78 17 20
IC801 (3/3)
14 14
B+ +3V
FOCUS/TRACKING COIL DRIVER
SPINDLE/SLED MOTOR DRIVER
(IC401) +3V,
HEADPHONE AMP
(IC302) +3V
DRY BATTERY
B+
SIZE "AA"
(IEC DESIGNATION LR6)
CHARGE
2PCS,3V
BCENTER
RECHARGEABLE
B-
BATTERY
(NC-WMAA) or
(NH-WM2AA)
2PCS,2.4V
D401
E225
J401
DC IN 4.5V
!