Block Diagram - Panel Section - Sony ICD-MX20DR9 Service Manual

4-3. BLOCK DIAGRAM – PANEL SECTION –
S5903,9505
FUNCTION
KEY
S9504 Q9501,9502
WAKE UP
SEESAW
SWITCH
KEY
ON
S9502
VOICE UP
OFF
ON
S6001
DIRECTNL
OFF
ON
S9501
DPC
OFF
ON
S9101
HOLD
OFF
ICD-MX20DR9
74 GIO P41
75 GIO P42
38
IC7001(3/3)
SYSTEM CONTROLLER
7 P54/AN4
IC5201
1 2
RST 19 RESET
61 P42/INT22/SO2/SDA
Q1302,1303
D BDVDD
VOLTAGE DETECT
4
MS VDD
MAIN
28 P24 SECTION-2
(Page 14)
P06 42
BATT AD
P43/INT23/SI2/SCL 62
VDD DSP1
P64/INT25/UI2
1
DC IN
14 P60/INT10
P53/AN3 6
IC5115
CORE PWR
P05 43
REG
IC6001(3/3)
CPU
46 35 36
NAND PWD
IC9101
+3.3V
+3.3V
REG
IC1306
AVDD
REG
ADA PWR
IC5121
VDD I01
REG
IC5206
5
REG
IC5111
REG
MS PWR
Q1503,1514
SWITCH
IC1505
DDCOUT
VOLTAGE
1 2
DETECT
VBUS Q1508
B
SWITCH
Q9801
VCORE
SWITCH
IC1502
SWITCH
Q1593
SWITCH
15 15
IC5113
VDD CORE
REG
UNREG
Q1513
D1502
L1501
B+
SWITCH
Q1507
IC1503
SWITCH
DC/DC CONV.
1
IC1504
3 FB1 EXT1 1
REG
4 PWM1
3
Q1505,1509-1511
7 PWM2
8 FB2 EXT2 10
L1502
Q1506
SWITCH
D1501
Q1502 Q1501
SWITCH DC DET
ICD-MX20DR9
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
2PCS. 3V
VOLTAGE
DETECT
Q1512
B+
SWITCH
J1501
DC IN 3V
IC1501
Q1504,1515
REG
SWITCH