Epson U220B Technical Reference - Page 88
Troubleshooting, Rev. D
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4.1.1.2 Recoverable Errors When a recoverable error occurs, after the cause of the error is removed, the printer can recover from the error by receiving an error recovery command without turning off the power: ERROR Description Paper roll cover open The roll paper cover is error (*1) opend when printing. ERROR LED Blinking Pattern 160 ms Autocutter error (Type A, B only) The autocutter does not work correctly Home position detection error (This is "Mechanical error") The home position cannot be detected due to a paper jam Recovery Recovers by error recovery command with the cover closed Recovers by error recovery command. (See "Autocutter Jam" (page 4-3)) Recovers by error recovery command Note: (*1) These conditions are selected by MSW 8-5 and 8-8. When MSW 8-5 (mapping of the cover open status) is OFF, the error does not occur and a "paper end error" occurs instead. If MSW 8-8 is ON, this error is handled as a recoverable error. 4.1.1.3 Errors that are impossible to recover: ERROR R/W error in memory or gate array High voltage error ERROR LED Blinking Pattern Description 160 ms After R/W checking, the printer does not work correctly. Writing to, reading out, or erasing the NV memory for image scanning results does not work correctly. The power supply voltage is extremely high Low voltage error The power supply voltage is extremely low CPU execution error The CPU executes an incorrect address or I/F board is not connected Print head There is an abnormality in temperature the print head detection circuit error temperature Recovery Impossible to recover Impossible to recover Impossible to recover Impossible to recover Impossible to recover 4-2 Troubleshooting Rev. D