Sharp UP-3300

CHAPTER 7. CIRCUIT DESCRIPTION
1. Hardware block diagram
Drawer x 2
RS232 x 2
CPU
H8/510
MPCA8
IR
PSEUDO
SRAM
1MB
OPC2
EXT.SLOT
(80pin x 2)
RAMCN
(72pin)
CKDC9
SW
VCC
LCD
640 x 480 dots
DRIVER +24V
DRIVER +24V
DRIVER/
RECEIVER
VGA
CONTROLLER
MN89303A
BRIGHTNESS
CONTROL
VOLUME
INVERTER
CONTRAST
ADJUSTMENT
VOLUME
POWER SUPPLY
VRAM
(DRAM 512K)
SRN
FLASH
ROM
2MB
PRINTER
TOUCH
PANEL
CONTROLLER
7 – 1