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Date: 4/3/91 Originator JV Page(s): 1 of 4 Epson printers issue beep tones when certain error conditions exist. Those beeps can assist you in locating and repairing customer’s printers. The following error codes are listed by product name. NOTE: Most of the beeps issued by the printers are of .1 second duration with a .1 second pause between beeps.
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PSB No: P-0076 Page: 2 of 4 LQ-800, LQ-1000, L750 1 beep: BEL code 1 beep: A Control Panel setting is accepted 3 beeps: Paper End detected 5 beeps: Abnormal carriage movement (.5 sec. pause between beeps) 5 beeps: +35V supply is abnormal LQ-860 1 beep: BEL code (.5 sec.
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PSB No: P-0076 Page: 3 of LQ-2500 NOTE: Printers with LCD displays use error messages along with beeps to inform the user of problems. The following messages will help you to troubleshoot problems. A blank LCD screen with the Power-on LED lit can be caused by a bent pin on one of the PROM or jumper J1 may be set incorrectly.
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PSB No: P-0076 Page: LQ-2550 cont. A ‘Verify After Write” check to the SRAM has failed. The SRAM could be bad. This is a motor control error. Four possible areas of failure are: a. CR home condition not detected at power up b.