Epson C3500 Technical Reference Guide - Page 154
A9, B0 to DA, C}. Turn - specs
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LCD display Description Recovery method SERVICE SOON ## The product is near the end of its service life. Because the internal parts of the printer are near the end of their service life, prepare to replace the printer, or prepare a printer for replacement. PRINTER ERROR ## ##: 7B or 7C Environmental temperature is out of spec. Environmental temperature is too low (7B) or too high (7C). Set operating temperature from 10 to 35C {50 to 95C}. Turn on the power again. PRINTER ERROR ## ##: 20 to 54, 64 to 75, A9, B0 to DA Paper jam Poor autocutter operation Irregular ambient temperature Malfunction 1. Turn the printer off. 2. Open the roll paper cover. 3. Check the paper path for a paper jam. If jammed paper is found, remove it completely. 4. Set a paper. 5. Turn the printer on. If the error occurs again, perform repairs. SERVICE REQD. ## ##: A0 to A3 The product is beyond its ser- Perform repairs. vice life. Failure in firmware updating Failed to update the firmware. Turn the power on again, and if the error occurs again, perform repairs. 154