Epson Stylus C82 Service Manual page 20

EPSON Stylus C82
ROM
(IC1)
D-RAM
(IC5)
Transceiver
Parallel
CN1
I/F (IC3)
CN3
USB
Reset regulator
(IC4)
OPERATING PRINCIPLES
E01A38CA
ASIC (IC10)
D0 (#164), D1 (#169)
D2 (#174), D3 (#4)
D4 (#5), D5 (#176)
D6 (#171), D7 (#166)
D8 (#167), D9 (#172)
D10 (#1), D11 (#6)
DATA
D12 (#2), D13 (#173)
D14 (#168), D15 (#163)
A1 (#154), A2 (#152)
A3 (#149), A4 (#147)
ADDRESS
A5 (#144), A6 (#141)
A7 (#139), A8 (#136)
A9 (#133), A10 (#135)
A11 (#138), A12 (#140)
A13 (#143), A14 (#146)
A15 (#148), A16 (#151)
A17 (#153), A18 (#134)
A19 (#61)
DATA0 (#115)
DATA
to
DATA4 (#111)
DATA5 (#109)
to
DATA7 (#107)
/ACK (#122), BUSY (#121)
PE (#119), SLCT (#118)
/ERR (#117)
/STB (#104), /INIT (#103)
/AFXT (#102),/SLIN (#101)
LH (#106)
DIR (#124)
HD (#123)
DP (#98)
DM (#99)
USBLH (#95)
MRES (#129)
LED2 (#66) to LED0 (#68)
/NMI (#131)
/RESET (#130)
Table 2-5. Block diagram for the C486 MAIN Board
Electrical Circuit Operating Principles
/HWFLR (#36)
HWSDATA (#39)
HWSCLK (#30)
DATA
/HWSLAT (#31)
driver 1
HWCLK1 (#33)
HWCLK2 (#34)
HWA0 (#40)
to
HWA4 (#44)
RST_DCMCU (#89)
PWM1_MCU (#82)
PWM2_MCU (#87)
Motor driver
DATA1_MCU (#81)
(IC8)
CLK1_MCU (#83)
DATA2_MCU (#86)
CLK2_MCU (#88)
ECS (#128)
EEPROM
ECK (#127)
(IC6)
EDO (#126)
EDI (#125)
ENCA_PFDCU (#54)
CN12
ENCB_PFDCU (#55)
SWA1 (#72) CN4
PSC0 (#69) CN19
CN20
SW0 (#57) to SW2 (#59)
+42V
F1
F2
CN8
Head
Q2
(IC9)
CN9
Q3
CN14
CN13
PF Encoder
PE sensor
PS Board
Panel Board
Revision A
Printhead
CR motor
PF motor
20