Block Diagram - Lcd/Sw Section - Sony ICD-BM1 Service Manual

ICD-BM1/BM1PRO
3-3. BLOCK DIAGRAM — LCD/SW SECTION —
WAKEUP
E
(Page 21)
MSINS
(Page 21) F
IC701(2/2)
CPU (Cliche)
LCDDO 22
LCDSCK 21
XLCDCS 18
XLCDRST 25
S908,954,957
959,960,962
KEY0
86
FUNCTION
KEY BATTAD 91
DSPPWR 2
S901-907
FUNCTION 87 KEY1
KEY
S956,958
88 KEY2
MODE SWITCH
Q952
WAKE UP
XDCINDET 5
DETECT
S955
POWER
POWER SW
32
ON
OFF
CVDD
36 MSLOCK
Q951
S961
(OPEN/CLOSE)
Q703
WAKEUP
4 WAKEUP
SWITCH
XRST 65
Q702
89
VORDPC
MICSENS 90
IC504 IC501
+1.6V
XRST
VOLTAGE
G
1 2 3
DC/DC
DETECT
LCD1
CONV.
LIQUID
(Page 21)
CRYSTAL
IVDD
DISPLAY
(IC601)
MODULE
SWITCH
XBATTEN
A
DSP PWR
C
IC508 (Page 21)
(Page 21)
+2.4V
CCVDD
4
3
REG
(IC701)
IC509
+3.1V
MSVDD
5 1
REG
(MEMORY STICK)
3
(Page 21)
HPPWR
H
I
(Page 21)
IC513
IC505
PLUG-IN +2.5V +2.9V
5 1 5 1
POWER REG REG
3 4
LMUTE
D
AVDD,HVDD
(Page 21) (IC301)
IC506
Q509
4
EVDD
B+
+3.1V
5 1
(IC601)
SWITCH
REG
Q511
SWITCH
IC707
2 RESET 3
CIVDD
(IC701)
CON FERENCE ON ON
DICTATION OFF OFF
S952 S951 S953
MIC SENS DPC VOR
22 22
Q504
B+
5
SWITCH
4 IC503
VOLTAGE
1 3
DETECT
Q704
L501
Q501
SWITCH
IC502
Q503
VOLTAGE
1 FB EXT 5
CONTROL
CE
Q507 Q506
3
V BUS
VOLTAGE DC
DC/DC
DETECT DETECT
CONV
Q502
SWITCH
SWITCH
Q505
IC901
VDD EL
EL
2 1
BACKLIGHT
XLIGHT
3
LIGHT
B
(Page 21)
DVDD CVDD,IVDD LCD
(IC301) (IC801) MODULE
DRY BATTERY
3V
J501
DC IN 3V
!