Block Diagram -Power Supply Section - Sony NW-MS7 Service Manual
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Also See for NW-MS7:
- Operating instructions manual (48 pages) ,
- Specifications (2 pages) ,
- Basic manual (2 pages)
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4-4. BLOCK DIAGRAM — POWER SUPPLY SECTION —
XIRQ3 MS EJ
151
S806
HOLD
PH0 HOLD
175
PH1 JOG
174
PI7 STOP
166
AN1 AN KEY
172
VOLUME
S801,802
DISPLAY/
MENU
S803,804
PD17 WKUP MSK
87
WAKE UP MASK SWITCH
Q803
NMI
120
PE18 U PWR
150
PC24 PCON
35
PWM/PFM CONTROL,SWITCHING REGULATOR
PWM
EXT
5
CONTROL
CIRCUIT
VOUT
2
PI0 AN BATTV
173
AN3 AN DCV
170
VCC
+3.3V
SYSTEM CONTROL
IC701 (3/3)
HPVCC
+3V
PC25 AU PWR
34
+3.3V
RESET
IC714
VOUT
VIN
121
XRES
3
2
PI2 BATT
171
+3.3V
PC18 MS PWR
42
PF2 BATTSW OPEN
158
+3.3V
PC21 S PWR
38
PI4 HIDC
169
RST
PD24 LCD XRST
76
CS
XCS4 LCD XCS
2
SCL
PD22 LCD CLK
78
SDA
TXD0 LCD SDA
24
RXD0 LCD SDA
25
BACK LIGHT
PE22 LCD BL
155
ON/OFF SWITCH
Q601
READY
CHARGE LED
7
BATTERY
DATA O2S
TXD2 ST DI
138
CHARGER
DATA S2O
(2/2)
RXD2
133
04
S701
(EJECT)
S807
EJECT
DETECTOR
(FUNCTION)
Q709
JOG PLAY/PAUSE
T
D801
D802
WAKE UP
SWITCH
Q804
JOG +
1
JOG -
4
KEY
D807
C
SWITCH
Q801
x
S805
WAKE UP
SWITCH
Q802
PWM CONTROL,SWITCHING REGULATOR
PWM CONTROL,
EXT
PWM/PFM SWITCH
4
CONTROL CIRCUIT
IC506
VOUT
3
S702
SOFT
VIN
ON/OFF
(RESET)
5
START
1
CIRCUIT
L502
PCON
SWITCH
Q511
PCON
RIPPLE
SWITCH
FILTER
Q512
Q302,303
SWITCHING
Q506-508
AU-POWER
SWITCH
Q305
IC703 POWER
SWITCH
Q705,715
D704
MS-POWER
SWITCH
Q703,713
IC702 POWER
SWITCH
Q701,711
VCC
LIQUID
+3V REGULATOR
CRYSTAL
IC710
DISPLAY
PANEL
VCI
VOUT
VIN
3
2
LCD701
AVCC
LCD BACK LIGHT UNIT
+3V
DC IN
USB VCC
– 23 –
+3.3V REGULATOR
IC707
VOLTAGE
REFERENCE
CE
OUTPUT
3
CONTROL
D703
D702
VIN
VOUT
2
5
CURRENT
LIMIT
D701
IC505
REFERENCE
VOLTAGE
SUPPLY
(SOFT START)
ON/XOFF
1
D509
D508
D503
D512
L501
SWITCHING
SWITCHING
Q504
Q505
3.2V VOLTAGE DETECTOR
IC507
D502
OUT
VDD
1
2
3.5V VOLTAGE DETECTOR
IC508
DC IN/BATTERY
OUT
VDD
DETECT SWITCH
1
2
Q509
USB VCC
+3.3V
+3.3V
USB
POWER
SWITCH
Q702,708
+3.3V REGULATOR
IC502
VOLTAGE
REFERENCE
CE
OUTPUT
3
CONTROL
VOUT
5
2
CURRENT
LIMIT
RECHARGEABLE
CHARGE
BATTERY
(LITHIUM-ION)
DC IN 3.7V
D504
CHARGE
CONTROL
Q501
LITHIUM-ION BATTERY CHARGE CONTROL
IC503
CEL
7
D507
CONSTANT
CS
8
CURRENT
CONTROL
CHARGE
SWITCH
LOW
Q502
VOLTAGE
DETECTION
SW2
3
D506
D505
SW1
4
VCC
5
BATTERY
OPEN
5.6V VOLTAGE DETECTOR
SWITCH
IC504
Q503
VDD
OUT
2
1
HIDC
SWITCH
Q510
– 24 –
NW-MS7
EXT
CONSTANT
6
VOLTAGE
CONTROL
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