Epson 890N Service Manual - Page 54

EPSON FX-890/2190 3.1.3 Preliminary Checks Before starting troubleshooting, be sure to verify that the following conditions are all met: † The power supply voltage must be within the specification limits. (Measure the voltage at the wall socket.) † The POWER CORD must be free from damage, short circuit or breakage, or miswiring in the POWER CORD. † The printer must be grounded properly. † The printer should not be located in a place where it can be exposed to too high or low temperature, too high or low humidity, or abrupt temperature change. † The printer should not be located near waterworks, near humidifiers, near heaters or near flames, in a dusty atmosphere or in a place where the printer can be exposed to blast from an air conditioner. † The printer should not be located in a place where volatile or inflammable gases are produced. † The printer should not be located in a place where it can be exposed to direct rays of the sun. † The printer must be located in a well-ventilated place. † The printer must be placed on a strong and steady level table (without an inclination larger than 5 degrees). † The paper used must conform to the specification. † There must be no error in handling of the printer. † The Regular Replacement Parts must have been replaced every time their respective specified numbers of sheets had been printed. † When printing can not be performed, execute self testing and check to see if any trouble occurs. (Refer to "Operations at Power-on" on page -31.) In addition, check the values for "Default Setting". (Refer to "Default Setting" on page -33.) † Check to see if the surface or the inside of the printer is soiled remarkably or if any component is broken. † Make certain that the harness is connected properly. Revision B † Make sure that gears of the printer mechanism do not rub each other excessively. Confirm that all gears are engaged properly. † Make certain that the rollers inside the printer are free from soiling and free from scratches. † Clear EEPROM to return the internal settings of the printer to the factory default settings, if necessary. (Refer to "EEPROM Clear Function" on page -35.) 3.1.4 Error As this printer checks its condition by itself at power-on, when it finds any trouble, it indicates it with error indication buzzer and LEDs. The error indications and corresponding remedies are shown in the table below: Table 3-1. Error Indications Error Paper out error Beep sounds Cause When printer fails to load ••• a sheet, it goes into paper out error. Remedy Set paper in the printer correctly. When release lever Release lever operation error ••• position is wrong, printer Set the release lever in the goes into release lever correct position. error. Cover open error When printer's cover is ••• open, printer goes into cover open error. Close the cover. Paper eject error ••• When printer fails to eject a sheet, it goes into paper out error. Remove the jammed paper from inside the printer. Fatal error Turn off the printer once ----- A failure related to certain and turn it back on, to see components is detected. if the same error occurs again.. Note : The symbols used in the table above represent the following: "•": Beeper sounds about 100 ms and interval is about100 ms "-":Beeper sounds about 500 ms and interval is about100 ms Troubleshooting Overview 54