EPSON Perfection4180 Photo
Revision A
OPERATING PRINCIPLES
Operation Principle of Electric Circuit
22
2.2 Operation Principle of Electric Circuit
The following electric circuits are used in the scanner.
Main Board
CCD Board
Panel Board
This board has four buttons (Start/Copy/Scan to E-mail/Scan and Save) and LED
lamp.
Power supply
The scanner supplies DC voltage (+24V) from the AC adapter.
AC adapter rated voltage
•
Rated output
DC24 1.4A
•
Input Voltage
AC100-120V
±
10% (100V)
AC220-240V
±
10% (200V)
•
Rated Input Current
0.8A (AC 100V system)
0.4A (AC 200V system)
•
Input Frequency Range 50 to 60Hz
±
0.5Hz
•
Output Voltage
DC24 to 26.4V
DC voltage (+24V) is supplied to the Main Board CN4. A power switch is located
between the DC jack and the Main Board.
ADF Board (Option)
Table 2-1. Main Board IC
Name
Location
Details
S1R77001F00A2
IC4
ASIC: Host base scanner controller
S1R720G0F00A0
IC6
ASIC: UTM (USB2.0 interface)
K4S641632F-TC1H0D0
IC3
SDRAM 1M x16bit x4bank
TB62205F
IC1
Motor DC-DC converter CR Motor Drive
+24V IN, +12V/+5V OUT
uPC37M32
IC2
DC-DC converter
+5V IN, +3.3V/+2.5V OUT
MM74HC595M
IC5
Serial-Parallel converter
Table 2-2. CCD Board IC
Name
Location
Details
ILX183K
IC1
CCD
AK8416
IC7
16bit A/D converter
E02A41YA
IC8
ASIC: CCD/AFE drive signal generator
SN74ACT244NSR
IC3, IC4
CCD drive buffer
74HCT4053PW
IC5
CCD drive buffer
KIA78M05F-RTF/P
IC2
DC-DC converter
+12V IN, +5V OUT
Table 2-3. AFD IC
Name
Location
Details
M54670P
IC2
ADF Motor driver
MM74HC165M
IC3
Parallel-Serial Converter
M66311FP-250D
IC1
Serial-Parallel Converter
MM74HCT04M
IC4
Buffer IC
Summary of Contents for Perfection4180 Photo
Page 5: ...Revision Status Revision Date of Issue Description A July 30 2004 First release ...
Page 8: ...C H A P T E R 1 PRODUCTDESCRIPTION ...
Page 19: ...C H A P T E R 2 OPERATING PRINCIPLES ...
Page 23: ...C H A P T E R 3 TROUBLESHOOTING ...
Page 29: ...C H A P T E R 4 DISASSEMBLY ASSEMBLY ...
Page 52: ...C H A P T E R 5 ADJUSTMENT ...
Page 54: ...C H A P T E R 6 MAINTENANCE ...
Page 57: ...C H A P T E R 7 APPENDIX ...
Page 66: ...401 GT F600 PERFECTION 4180 PHOTO NO 1 Rev 01 B170 ACCE 001 10 20 30 40 402 400 ...