Chapter 1 Product Overview Unrecoverable Errors Printing is no longer possible when unrecoverable errors occur. The printer must be repaired. Turn off the power immediately when unrecoverable errors occur. CAUTION 1 17 Error Error description Error LED flash code Approx. 160 ms Memory R/W error After R/W checking, the printer does not work correctly. High voltage error The power supply voltage is extremely high. Low voltage error The power supply voltage is extremely low. CPU execution error The CPU is executing an incorrect address. Internal circuit connection error Internal circuits are not connected correctly. Approx.2.56 s UIB error An abnormal operation occurs in UIB.