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

ICD-BM1/BM1A/BM1AVTP/BM1B/BM1DR9
3-2. BLOCK DIAGRAM – LCD/SW Section –
(Page 9)
(Page 9)
ICD-BM1/BM1A/BM1AVTP/BM1B/BM1DR9
IC701(2/2)
CPU (Cliche)
XLCDRST
S908,954,957
959,960,962
KEY0
86
FUNCTION
KEY
S901-907
FUNCTION 87 KEY1
KEY
S956,958
88 KEY2
MODE SWITCH
Q952
WAKE UP
XDCINDET
DETECT
S955
POWER
POWER SW
32
ON
OFF
CVDD
36 MSLOCK
Q951
S961
(OPEN/CLOSE)
Q703
WAKEUP
4 WAKEUP
SWITCH
Q702
WAKEUP
E
MSINS
F
XRST
G
LCD1
22
LCDDO
LIQUID
(Page 9)
LCDSCK 21
CRYSTAL
XLCDCS 18
DISPLAY
25
MODULE
BATTAD 91
DSP PWR
C
DSPPWR 2
IC508
(Page 9)
+2.4V
CCVDD
3
REG
(IC701)
IC509
+3.1V
MSVDD
5
REG
(MEMORY STICK)
3
HPPWR
H
(Page 9)
5
IC513
IC505
PLUG-IN +2.5V +2.9V
5 1 5
POWER REG REG
3
LMUTE
D
AVDD,HVDD
(Page 9) (IC301)
Q509
EVDD
B+
+3.1V
5
(IC601)
SWITCH
Q511
SWITCH
IC707
XRST 65 2 RESET 3
89
VORDPC
90
MICSENS
CON FERENCE ON
DICTATION OFF
S952 S951 S953
MIC SENS DPC VOR
10 10
IC504 IC501
Q504
+1.6V
VOLTAGE B+
1 2 3 5
DC/DC
DETECT SWITCH
CONV.
4
IVDD
1
(IC601)
Q704
SWITCH
XBATTEN
A
L501
(Page 9)
Q501
4 SWITCH
IC502
1
Q503
VOLTAGE
1 FB EXT 5
(Page 9)
CONTROL
CE
3
V BUS
I
DC/DC
CONV
1
Q502
4
SWITCH
IC506
4
1
REG
IC901
VDD EL EL
2 1
BACKLIGHT
XLIGHT
3
LIGHT
B
(Page 9)
CIVDD DVDD CVDD,IVDD LCD
(IC701) (IC301) (IC801) MODULE
ON
OFF
DRY BATTERY
IC503
3V
VOLTAGE
3
DETECT
J501
DC IN 3V
!
Q507 Q506
VOLTAGE DC
DETECT DETECT
SWITCH
Q505