Block Diagram - Key/Power Supply Section - Sony PRS-505/SC - Portable Reader System Service Manual

PRS-505
6-3.

BLOCK DIAGRAM - KEY/POWER SUPPLY Section -

S873
VOL −
S874
VOL +
KEY_OUT0 –
KSO0 – KSO2
KEY_OUT2
KEY
FLEXIBLE
BOARD
KEY_IN0 –
KSI0 – KSI7
KEY_IN7
CN201
FROM
4
POWER SW-STBY 48 STBY_SW
SWITCH
1
ORG LED2 50 LED_1
TO
2
LED
RED LED1
LED
SWITCH
Q1001
3 X2
X801
32.768kHz
2 X1
5 OSC2
X802
4.9152MHz
6 OSC2
14
2
1 LDO
12 TS
CHARGE CONTROL
THP401
PRS-505
USBBOOT 52
USBCHG 46
RXD 58
TXD 59
RTS 57
CTS 42
POR 22
XM_RESET 23
+3.1V
SD-VDD REGULATOR
IC205
+3.1V
MS-VCC REGULATOR
IC204
+3.1V
SUB CPU
VDD REGULATOR
IC801
IC303
UNREG
USBON 24
USBDET 43
RWRON 20
Q472
VOLTAGE
LOW-BATT-LI 44 DETECTOR
BATT-LI 63 IC408
BATTERY
AD_ON 21
CONTROL SWITCH
BATT-DC 1
Q801, 802
XRESET 8
ISET2 10
15 47
3 18
USB 20
D401
PSEL 8
ISET2 7
IC401
D403
OUT 15 – 17
BAT 5, 6
AC 4
H11 USB_BOOT
F14 USB_CHRG
B8 UART1_TXD
E8 UART1_RXD
C9 UART1_RTS
E9 UART1_CTS
POR
L12
M14 XRESET-IN
C2 USBLED
VPOS
MAIN CPU
IC1001 (3/3)
VGP
E7 PCSDCARD
B+ SWITCH
GVDD
Q1805, 1822
F7 PCMSCARD
VNEG
G11 PCA3PIO
REGULATOR
VEE, GVSS
D1805
B− SWITCH
GVCC
Q1814
B+ SWITCH
Q402, 405, 406
RESET
IC407
BUFFER
5 Q CK 1
Q403
6 CLR PR 7
S801
RESET
14 14
SWITCHING
REGULATOR
IC1802
B+ SWITCH
1 SW VIN 6
Q1804
SS SHDN
D1804
5 4
REGULATOR
Q1802
D1810
REGULATOR
Q1806
D1802
+
CURRENT
DC/DC CONVERTER
DETECT
IC1805
IC1803
VIN 5
SW
1
Q1809 NFB 3
D1801
SHDN
4
+2.9V
V2
REGULATOR
IC402
VOLTAGE
DETECTOR +1.9V
IC404 VCORE REGULATOR
IC403
Q401
+3.1V
V3 REGULATOR
IC409
VOLTAGE +2.9V
DETECTOR REGULATOR
IC802 IC406
V1
VOLTAGE
DETECTOR
IC405
D1805 PS401
8PWR_NEG,
8PWR_POS,
8PWR_GATA
8PWR_POS
C (Page 13)
8PWR_GATE
8PWR_NEG
VBUS
A (Page 12)
LITHIUM ION
BATTERY
3.7V 600mAh
J001
– +
DC IN 5.2V