Epson Stylus COLOR 1520 Service Manual page 61

P-ROM(8M)
(IC14)
Type-B
I/F
Head
Temperature
+42V
Power Line
Reset IC
M51955BFP
(IC4)
+5V
Logic Line
Reset IC
RST592D
(IC1)
From IC6
From IC6
From IC5
From IC6
Rev. A
P-ROM(4M) DRAM(4M)
(IC11) (IC9)
CPU
C90A02CB
(IC7)
EEPROM
+5V
LE93C56
(IC2)
+5V
Lithium Battery
Black/Color Head
Common Driver Circuit
Nozzle Selection Signal
CR Motor Driver Circuit
SLA7043M (IC17)
PF Motor
Driver Circuit
UDN2917EB (IC16)
Figure 2-19. Control Circuit Block Diagram
DRAM(4M) MROM
(IC10) (IC12)
GA
E05B34
(IC5)
GA
E05B33
(IC6)
CLK
SD I/O
Timer
Counter IC
RTC-45436A
(IC3)
Carriage
Nozzle
Selection IC
Nozzle
Selection IC
M
CR Motor
M
PF Motor
Operating Principles
MROM
(IC13)
+42VDC
Data Bus
+5VDC
Address Bus
PSC
CR Motor Control
Control Panel
PE, Cover Open,
REL Sensors
HP, DE Sensors
Black/Color
Control Signals
PF Motor
Control Signal
Parallel I/F
Serial I/F
Black Head
128 Nozzles
Color Head
64 Nozzles
2-19