EPSON WF-4830, WF-4820 Series Service Manual Page 41-60

EPSON WF-4830 Series/WF-4820 Series Revision A Troubleshooting Troubleshooting Workflow 41 Confidential Flowchart 2-2. Troubleshooting Workflow (2) No Maintenance Box error [Occurrence Condition] This error occurs when Maintenance Box is not installed. [Major Occurrence Timing] • At power-on • Maintenance Box monitoring timing [Major Troubleshooting] Install the Maintenance Box. Maintenance Box detection error [Occurrence Condition] This error occurs when Maintenance Box data is incorrect or it is not recognized correctly. [Major Occurrence Timing] • Power-on timing • Maintenance Box replacement timing • Maintenance Box monitoring timing [Major Troubleshooting] • Remove and reinstall Maintenance Box • Maintenance Box replacement • Holder Connector CSIC replacement • Holder Connector FFC replacement • Main Board replacement Cover open error [Occurrence Condition] This error occurs when ADF/ SCN Unit is open. [Major Occurrence Timing] • At power-on • During printing [Major Troubleshooting] • Close ADF/SCN Unit replacement • ADF/SCN Unit replacement • SCN Open Sensor replacement • Main Board replacement The power-on sequence does not start (p 40) Error is indicated during power-on sequence (p 40) Error is indicated during printing check pattern (p 40) Fatal error Please refer to " 2.3 Fatal Error Code List (p43)" for troubleshooting. Maintenance error [Occurrence Condition] This error occurs when maintenance counter in EEPROM exceeds the specified value. [Major Occurrence Timing] • Power-on timing • Print start timing • Paper eject timing • Cleaning timing • Ink cartridge replacement timing [Major Troubleshooting] • Replace Maintenance Box • Paper Guide Lower Porous Pad replacement • Maintenance counter reset (only Paper Guide Lower Porous Pad) Ink End error [Occurrence Condition] This error occurs when ink in Ink cartridge is empty. [Major Occurrence Timing] • Power-on timing • Print start timing • Print timing • Cleaning timing • Ink cartridge replacement timing [Major Troubleshooting] Ink cartridge replacement [NOTE] If an error occurs during printing, the page where the error occurred is skipped and the printing resumes from the next page. Paper Jam error This error occurs when printing the nozzle check pattern. please refer to " Paper Jam error" . No Power * [Presumable Cause] • Power Supply Assy damage • Main Board damage • Panel Assy damage [Major Troubleshooting] • Power Supply Assy replacement • Main Board replacement • Panel Assy replacement 2 * : If the printer can turn on but turns off right away, the protection circuit may cut off the power due to an error such as a circuit failure. 1 No Ink cartridge error [Occurrence Condition] This error occurs when Ink cartridge is not installed. [Major Occurrence Timing] At power-on [Major Troubleshooting] Install Ink cartridge CR fixing material error [Occurrence Condition] When the printer moves to the 80-digit side during the power-on sequence before initial ink charge, the printer detects foreign material. [Major Occurrence Timing] Power-on timing (before initial ink charge) [Major Troubleshooting] Remove the CR fixing material, and install the ink cartridge. Paper Jam error [Occurrence Condition] This error occurs when top/bottom of paper is not detected by PE Sensor in the specified steps of paper feeding operation correctly. [Major Occurrence Timing] • Power-on timing • Paper loading timing • Paper eject timing • Duplex print timing [Major Troubleshooting] 1 Remove the jammed paper by opening SCN Unit. 2 Push “Start” button. 3 If not resolved by 2), check the following. • Foreign material, bits of paper • Part come-off • PE Sensor Lever • PE Sensor • Float of Paper Guide Front Porous Pad • Main Board • PW Sensor [NOTE] * If an error occurs during printing, the page where the error occurred is skipped and the printing resumes from the next page. * If an error occurs during duplex printing, the following are performed. • If an error occurs during the front face of duplex printing, the page where the error occurred and the next page are skipped and the printing resumes from the page after the next. • If an error occurs during the back face of duplex printing, the page where the error occurred is skipped and the printing resumes from the next page. No Paper error [Occurrence Condition] This error occurs when top of paper is not detected by PE Sensor in the specified steps of paper loading operation correctly. [Major Occurrence Timing] Paper loading timing [Major Troubleshooting] 1 Put paper in cassette and push “START” button. 2 If a paper stops before reaching PE Sensor, remove it and check the paper condition. 3 A) If no damage on the paper, set edge guide correctly after putting paper in cassette and push “PRINT” button again. B) If damage on the paper, check foreign materials / parts come- off / parts transformation in paper path. 4 If not resolved by 3-A) & 3-B), check the following. • Pickup Roller • Duplex Unit • PE Sensor Lever • Main Board • PF Motor • Cassette Assy Double Feed error/Stack col- lapsed error [Occurrence Condition] This error occurs on the following cases. • A paper is ejected without printing during paper loading operation. • Actual paper length is longer than theoretical one. [Major Occurrence Timing] Paper loading timing [Major Troubleshooting] • Set the paper again. • PE Sensor Lever replacement • PE Sensor replacement • PW Sensor replacement • Main Board replacement [NOTE] This error occurs only for manual duplex print. No Paper Cassette error [Occurrence Condition] This error occurs if one of the cassettes is not installed. [Major Occurrence Timing] Paper loading timing (Front loading) [Major Troubleshooting] Install the Cassette Assy 3 Paper Size Unmatch error [Occurrence Condition] This error occurs when actual paper size is not matched to theoretical one. [Major Occurrence Timing] • Duplex print timing • FAX data print timing [Major Troubleshooting] 1 Put correct sized paper in cassette, and push “START” button. 2 If not resolved by step 1), check the following points. • PE Sensor Lever • PE Sensor • PW Sensor • Main Board Problems related to print result or during printing (p 40) Scanning cannot be performed successfully (p 40) ADF does not operate normally (p 40) Poor Printing [Phenomenon] • Poor printing quality • Ink stain on paper • Dot missing • Paper eject without printing [Presumable Cause] • Driver / Panel mis-setting • Contamination of CR scale • Contamination of Printhead Cover • Printhead damage • Ink clogging of Printhead • Contamination on Cap Unit / Wiper of Ink system Unit • Ink system Unit damage • Float of Paper Guide Front Porous Pad • Narrow PG • PE Lever damage • PE Sensor damage • PW Sensor damage [Major Troubleshooting] • Driver / Panel re-setting • CR Scale replacement • Printhead cover cleaning • Printhead cleaning • Ink cartridge replacement • Printhead replacement • Rubber cleaning of Cap Unit of Ink system Unit • Ink system Unit replacement • Paper Guide Front Porous Pad re-installation • PG readjustment • Printer Mechanism replacement • PE Lever replacement • PE Sensor replacement • PW Sensor replacement • Main Board replacement Poor Paper Loading [Presumable Cause] • Use of 3rd party media • Edge guide mis-setting • Foreign material • Part come-off • Contamination of paper feed roller (Duplex Unit) • Cassette Assy damage • Pickup Roller deterioration, contamination • Contamination of PF roller [Major Troubleshooting] • Recommendation of EPSON media • Edge guide re-setting • Foreign material removal • Part re-installation • PF Roller replacement • Cassette Assy replacement Abnormal Noise [Presumable Cause] • Foreign material • Insufficient grease • Gear damage [Major Troubleshooting] • Foreign material removal • Lubrication of grease • Gear replacement ADF failure [Phenomenon] • No paper feed • Double feed • Paper jam • Paper skew [Presumable Cause] • Wear of Pickup Roller • Wear of ADF Pad Assy • Gear damage • Scanner Motor damage • Contamination of Scanner Glass • ADF Paper Support Assy damage • Foreign material • ADF Cover Assy damage • Wear of EJ Roller • ADF Sensors damage [Major Troubleshooting] • ADF Cover Assy replacement • ADF Pad Assy replacement • Scanner Glass cleaning • ADF Paper Support Assy replacement • Foreign material removal • SCN Unit replacement • ADF Unit replacement 4 5 Scanner failure [Presumable Cause] • Contamination of Scanner Glass • Contamination of Document Pad • CIS Unit bonding failure • CIS Unit damage • Scanner Motor damage [Major Troubleshooting] • Scanner Glass cleaning • Document Pad cleaning • Document Pad replacement • SCN Unit replacement 6 Ink cartridge detection error [Occurrence Condition] This error occurs when Ink cartridge data is incorrect or Ink cartridge is not recognized correctly. [Major Occurrence Timing] • Power-on timing • Print start timing • Cleaning timing • Ink cartridge replacement timing [Major Troubleshooting] • Remove and reinstall Ink cartridge. • Ink cartridge replacement • CSIC Terminal replacement • CR Contact Module replacement • Head FFC replacement • Main Board replacement
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Epson WF-4830 Series Service Manual Page 41-60
Epson WF-4820 Series Service Manual Page 41-60

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