Sony ICD-U50 - Schematic Diagram - MAIN Board, USB Board

1717
ICD-U50/U60/U70
ICD-U50/U60/U70
4-5. SCHEMATIC DIAGRAM – MAIN BOARD, USB BOARD –
• See page 12 for Waveform. • See page 18 for IC Block Diagrams. • See page 18 for IC Pin Function Description.
IC B/D
IC B/D
no mark : PLAY
( ) : REC
*
: Impossible to measure
*
*
*
*
*
*
*
*
2.8
2.7
2.7
2.7
2.7
0
2.8
2.7
2.7
2.8
0
0
0
0
0
0
2.7
2.7
2.7
2.7
2.6
0 0
0
0
2.1
1.7
0.5 0.6
0
(1.2)
2.7 2.1 2.8 2.8 2.7
0
(0)
(2.7)
2.8
0(2.7)
*
****
*
*
*
*
*
*
*
0
1.5
1.5
1.2
2.8
0
1.5
1.5
0
0
0
0
0
0
0
2.6
0
2.7
0 0
0
2.8
2.8
2.8
2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8 2.8
2.8
0 0
2.7
2.7
2.8
0
2.8
1.5
2.1
1.5
1.5
0
2.8
1.5
1.5
1.5
1.5
2.8
0.5
1.5
2
*
0
2.6
2.8
0
2.6
2.1
IC702
K05SONY03 (U50)
K9F4G08UOM-PCBOT (U60)
K9K8G08UOM-PCBOT (U70)
MAX1797EUA+TG069
LIQUID
CRYSTAL
DISPLAY
DRY BATTERY
SIZE "AAA"
(IEC DESIGNATION LR03)
1PCS, 1.5V
TOTAL CURRENT
PLAY : 86mA
REC : 91mA
PLAY FF : 145mA
PLAY FR : 143mA
STOP : 1.3mA
A
JACK
BOARD
CN704
(Page 15)
.u >
VOL +
VOL –
REC/PAUSE
STOP
A-B
MENU
MAIN BOARD
1
USB BOARD
REAL TIME CLOCK
IC703
SYSTEM CONTROLLER
IC701
DC DC
CONVERTER
CONSUMPTION
VOLTAGE DETECTOR
Q501
VOLTAGE
CONTROLLER
IC504
IC505
IC501
REG
REG
IC502
IC503
BOOST CONVERTER
NAND FLASH
MEMORY
B
Ver. 1.1