Sony ICD-U50 Service Manual page 33

SCHEMATIC DIAGRAM – MAIN BOARD, USB BOARD –
MAIN BOARD
CN703
24P
A
JACK
BOARD
CN704
SUPPLEMENT-1
: Page 5
BATT
BATT
DCDCEN
TOTAL CURRENT
PLAY : 86mA
REC : 91mA
PLAY FF : 145mA
PLAY FR : 143mA
STOP : 1.3mA
LD501
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
1PCS, 1.5V
LD502
ICD-U50/U60/U70
IC703
IC703
VOL +
REAL TIME CLOCK
-TE85R
. u >
VOL –
S701
REC/PAUSE
S702
STOP
R754
S703
0
A-B C715
S704
R740
S705 R739
MENU 7.4k
7.4k
R506
IC504 MAX1797EUA+TG069
R507
C508
1.5
1.5
2 2.1
* L502
1.5
IC504
DC DC
CONVERTER
Q501
Q501
IC505
VOLTAGE
1.5
CONTROLLER
R512
0
C510 C511
IC505 2.8
C513
CONSUMPTION
VOLTAGE DETECTOR
1.5
R501
1.5
0.5
R502
C502 C503 1.5 2.8
C501
1.5
L501
C504
R503 R504
R516
IC501
1k
IC501
BOOST CONVERTER
D704 RB702
D705 D703
-TE85R
R731
C710
R733 R732
* * * *
2.6
0
R736
0
R738 0
2.8
0
0
R742 0
R744 0
IC701
SYSTEM CONTROLLER
R743 1.5
C109
1.5
IC701
0
2.8
C111
C112
1.2
1.5
2.8
0
C114
C113
R761 R706
X701
C707
C703
C701
C702
R705
IC503
REG
C512
IC503
D504
2.6
0
2.1
R505
R704
IC502
D501
C505 2.6
0
R703
D502
C705
2.8
D708
C506
C507
IC502
REG
7 7
R722
RB701
R748
R756
R757
C716
C717
C709
*
*
*
*
*
*
*
*
2.8
0
R760 R720 R717
R759
2.7 (2.7) 0
2.7
R751
2.7
0
0
2.7 2.8
2.7 0
2.8 C712
C708
0
2.7
0 2.7
0 2.7
2.7
R753
R714
C711
R758
R713
R712
LD701
LED
MODULE
LD702
LD703
LD706
D709
FB702
LD707
no mark : PLAY
( ) : REC
* : Impossible to measure
ICD-U50/U60/U70
Ver. 1.4
CN701
8P
LIQUID
CRYSTAL
DISPLAY
IC702
K9F2G08UOA-PCBOT (U50)
K9F4G08UOA-PCBOT (U60)
K9K8G08UOA-PCBOT (U70)
IC702
NAND FLASH
MEMORY
*
*
*
*
C713
2.8
*
*
*
*
USB BOARD