Summary Of Control Circuit Operations - Epson Stylus PRO Color Large Format Inkjet Printer 7000 Service Manual

EPSON Stylus Pro 7000

2.4 Summary of Control Circuit Operations

This section summarizes the functions of the (C299MAIN) Main Board and the
controls used to operate the printer.
Operating Principles
Motor
drivers
Printer
mechanism
Summary of Control Circuit Operations
IC8
Control Panel
CPU/C90A14CA
Reset
signal
IC13
ASIC/E05B61AA
IC9
E06A4610A
IC20
IC32
ASIC/TE7751
ASIC/uPD65802
IC33
IC35 IC30 IC41
PF Pump
CR
Fan
Motor
Motor Motor
Motor
solenoid
x2
Figure 2-21. C299MAIN Board-Circuit Block Diagram
Revision B
28VDC 42VDC
5VDC
CN7 -2VDC
IC15
IC80
RESET IC REGULA
TOR
IC69 BUS DRV/ CN1
LV161284
Parallel I/F
CN2
Type-B Slot
Stop signal
CN3
IC62 USB CTRL/
USB I/F
USS725
IC39
SRAM/8KB
IC61
EEPROM
D/A adj.,
IC73,74,75,76
USB-ID
DRAM/8MB
IC81,82
DRAM/2MB
IC1,2
-Firmware
Flash ROM/1MB
-D/A adjustment,
setting parameters
CN20
PCMCIA CARD Socket
Head-drive wave
generation
IC37
DAC/M65530FP
B head
C head
IC43
Head-drive
voltage common
driver
Fan
Printheads (B/C)
cutter
76
3.3V
DC