EPSON Perfection4180 Photo Revision A
TROUBLESHOOTING Troubleshooting 26
Figure 3-1. The Main Unit does not perform initialization operation. Figure 3-2. The host does not recognize the scanner if power is switched on.
Are all connectors
normal?
Can the CR Motor
operate normally?
Start
Reexamine the
connection.
Replace the CR
Motor.
Replace the Main
Board.
Does the host support
USB?
Has the
TWAIN Driver
supplied with the
scanner been installed
correctly?
Is the USB Cable
normal?
* Has "USB" been made valid after choosing
"My Computer" - "Properties" - "Device
Manager" on Windows?
Start
Replace the host.
Install (reinstall) the TWAIN
Driver for Perfection4180 Photo.
Replace the Cable.
Replace the Main
Board.
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