Uneven image density Feeding direction | Toshiba FC-22 manual

(18) Uneven image density

Feeding direction

Cause/Defect area	Step	Check items	Measures
Main charger	1	Main charger dirty?	Clean it or replace charger wire.
Transfer belt	2	Transfer belt dirty?	Clean belt.
	3	Transfer belt in defective contact with	Adjust belt.
		drum?
	4	Any abnormalities or deformation on belt?	Replace belt.
Laser optical unit	5	Foreign matter or dust on slit glass?	Clean slit glass.
Discharge LED array	6	Discharge LED array dirty?	Clean it.
	7	Any lamp of discharge LED array gone out?	Replace it.
Developer unit	8	Magnetic brush in defective contact with	Adjust doctor-sleeve gap.
		drum?
	9	Developer unit pressure mechanism mal-	Check mechanism.
		functioning?
	10	Defective transport of developer material?	Remove foreign matter if any.
Scanner section	11	1. Platen cover open?	1. Close platen cover.
		2. Glass, mirrors, or lens filter dirty?	2. Clean them.

FC-22 TROUBLESHOOTING

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January 2000 © TOSHIBA TEC

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Toshiba FC-22 manual Uneven image density Feeding direction

Contents

Service of Machines Main Service Parts for Safety Disposition of Consumable Parts/Packing Materials VorsichtEntsorgung des gebrauchten RAM-ICs inklusive Der Lithium-Batterie nach Angaben des Herstellers Adjustment Items Preventive Maintenance PM Contents Troubleshooting Based on Error Code Firmware Updating Appendix Error Code List Restart time out error Scanner related service call Original jam in the ADFOriginal not reaching the aligning sensor Original not reaching the exit sensor C3F ADF related service call Error of aligning sensor automatic adjustmentEeprom initializing error Error of paper exit sensor automatic adjustment Automatic adjustment error of bin inside paper sensor Transport motor rotation abnormalBin shift motor rotation abnormal Guide bar swing motor rotation abnormal F11 99 08 26 17 57 236210000000 Error code Unused Self Diagnostic Mode Transition diagram of self-diagnostic mode conditions Input check Test mode ADU side switch A3/LD Full COLORkey OFF, Auto COLORkey OFF, Energy SAVERkey on Full COLORkey OFF, Auto COLORkey ON, Energy SAVERkey OFF Full COLORkey OFF, Auto COLORkey ON, Energy SAVERkey on Operation procedure Full COLORkey ON, Auto COLORkey OFF, Energy SAVERkey OFF Output check Test mode ON/OFF Carriage fan motor rotation when standby low speed ON/OFF Carriage fan motor rotation when running high speed ON/OFFDocument motor indicator 1 reciprocating SCM fan motor rotation speed Low/High Operation procedure Group Test print mode Pixel modulation pattern for creating γ tablePixel modulation pattern 1 for selecting pulse width Pixel modulation pattern 2 for selecting pulse width Adjustment mode Group OHP mode 318Full color ~255 Fine adjustment of fuser motor rotation speed Fine adjustment of drum motor rotation speedFine adjustment of feed motor rotation speed 390 Thick paper 2 mode Thick paper 3 modeColor registration sensor error Or 16 or above Normal Right margin Write start position adjust 2nd cassette Default 9 68 msecModulation mode switching, type a Modulation mode switching, type B Density adjustment density curve selection Color mode black text γ curve set selectionMonochrome mode black text γ curve set Monitor patch output ON/OFF switching Fine adjustment Text Center setting Printed imageDarker setting Printed image Manual density Full color Text/Photo Lighter setting Printed image Sity fine adjust TextMade at the light side become Lighter Total hue adjustment For ID Full color non-text area YFor ID Full color non-text area M For ID Full color non-text area C Total luminance adjustment Total saturation adjustmentTend to be judged as color Auto-color mode Adjustment AI mode setting Time-out setting Macro recognition Pre-process text threshold AdjustmentMacro recognition Pre-process shading Threshold adjustment Adjustment Map Micro recognition Text emphasis adjustment When the value increases, the imDefault is equivalent to Micro recognition Logo text inside threshold Fixed black ratio adjustment, type a Fixed black ratio adjustment, type BFixed black ratio adjustment, type C Fixed black ratio adjustment, type D Color mode, black text γ adjustment Monochrome mode, black text γ adjustment~255 Mode become denser Color balance Color balance Text/Photo Low density High densityText Low density Photo Low density Output value indica When the light source Procedure Group Power Cancel Clear Energy Saver Start Setting mode Following items can be set or changed in this mode Timer for Print job start up time Set number Seconds Is disabledAll clearing by key copy counter Disabled 1Enabled Removal Original 269 Radf Image quality control auto-start When 1 is set, a paper source becomes Disabled EnabledStart count setting of developer Paper source priority A4/LT Secondary scanning 100% 1 101% Reproduction ratio adjustment Radf priority mode Continuous feeding by Start key Function clearing immediately Invalid 1 Valid After copyingImage repeat gap Invalid Other than Power shutoff Low power All clearing of image processing Adjustment valuesAll clearing of pulse width Selection adjustment results All clearing of γ correction Table adjustment results Refer to Counter function and maintenance chacke list Full-color print counter CopierDisplay of counter value Code 08-802 is Reflected Black print counter Copier Radf original counter Drum C life counter display/0 Refer to Counter function and maintenance check list 906 Does not start 1 StartsAvailable during MFP Invalid Valid System mode display Procedure for registering ID codes Registering/changing ID codes Correcting ID code Adjustment Order Copy Image Related Adjustment Automatic Adjustment of the Auto-Toner Circuit 100% AA3 Wait Remove the developer cartridges Install the toner cartridges Replace disabled parts 03-113 ON, 03-163 OFFCheck if the developer cartridge gears rotate properly Replace EPU Automatic Initialization of Image Quality Control Copy Image Dimensional Adjustment XXX Which occurs when the paper scrapes on Long size 439 441 443 445 Short size 440 442 444 446447 448 449 Feed motor speed adjustment Printer related adjustment FC-22 Adjustment Grid pattern Scanner related adjustment Step Application Method of the Adhesive for Screw Locking Application area Carriage frame Mirror Image skewing adjustment FC-22 Adjustment LCF FC-22 Adjustment Chart TCC-1 Adjustment order Toshiba Color Chart Place the Patch chart for gamma adjustment produced in step Shown. Press Start to have the adjustment results reflectedTransfer belt Input 2 with digital keys, and press Start and then Inter FC-22 Adjustment Remarks 550 551Manual-density Full Dark step value Dark side becomes 570 571 Copy mode Item to be Photo Map Remarks AdjustedAcceptable values 0 to 255 Copy mode Item to be adjusted Remarks Color 698 699702 Offset value for Background Background becomes Judgment Threshold for ACS AI Mode Setting Code Color mode Copy mode Content AI photo area Have to make adjustment by compromisingAI text area Image becomes AI photo area Smaller the value, the less moire tends to Overview High-Voltage Transformer SettingsSettings after replacing main high-voltage transformers Settings after replacing transfer transformer Adjusting Doctor-to-Sleeve Gap Adjusting the Scanner Section Adjusting the Carriages Installing the carriage drive wires to the wire pulleys Relationship between wound turns and wire holder jigs Lens Unit Loosen 2 screws for fixing the lens unit Marking Adjustment Direction FC-22 Adjustment Adjusting the Cassette for Sidewise Deviation Key Copy Counter MU-8, MU-10 08 setting mode, enter 3 under code Preventive Maintenance PM Types of Preventive Maintenance Symbols used in the checklist For FC-15 Preventive Maintenance ChecklistSymbols used in the checklist For FC-22 General Maintenance Checklist FC-22 Original glass Z60or a Platen cover Mirror TBU Color Maintenance Checklist FC-22 General Maintenance Checklist FC-15 Image quality sensor’s area Z40 Color Maintenance Checklist FC-15 53 52 51 54 56 57 Front sectional view Processing unit EPU Front-side drive system Such as screws on the table Developer material FC-22 Preventive Maintenance PM Kit SR-FC22H 20K kit Page Scanner carriage jig List of Adjustment ToolsTest chart No. TCC-1 Precautions for Storing Toshiba Supplies Checking and Cleaning of the Photoconductive Drum FC-22 Supplies Checking and Cleaning of the Fuser Rollers Checking and Replacing the Transfer Belt Checking and Replacing the Transfer Roller Troubleshooting Based on Error Code Reconnect the connector. Replace the harnessIs the fuser motor rotating? Disconnected? E03 Paper remaining inside the copier at power on Paper feeding jam E11 Paper misfeed from the ADU E12 Paper misfeed from the bypass Replace the cassette-feed jam sensor Replace the LGC board E19 Paper misfeed from the LCF Reconnect the connector. Replace the harness Cover open jam E41 Front cover opened during copying Close the front cover or the paper exit unitE42 Side door opened during copying Is the side door open? E45 LCF jam access cover opened during copying Is the LCF jam access cover open?Close the LCF jam access cover E43 ADU unit pulled out during copying Close the bypass unit E46 Bypass unit opened during copyingIs the bypass unit open? E52 Paper not reaching the ADU path sensor Have too many originals been placed? Original does not reach the aligning roller Original stops, skewed on the original glass Paper jam in the sorter EA1 Paper transport delay jam Paper transport stop jam Is the stapler unit cover securely closed? Paper remaining on the sorter transport path at power onEA4 Sorter front door opened during copying EA5 Staple jam EC3 OHP sheet used in non-OHP mode Is the ADU motor rotating properly? C09 Black developer motor rotation abnormal Is the black developer motor rotating properly? C0A Color developer motor rotation abnormal Is the color developer motor rotating properly? Drum motor K rotation abnormal Drum motor C rotation abnormalDrum motor M rotation abnormal Drum motor Y rotation abnormal Put the belt on properly C12 ADU paper end guide function abnormal Replace the gear Do the switches and sensors in the LCF unit function? C18 LCF tray function abnormal C28 C29 Exposure lamp disconnection detected Replace the harness. Reconnect the connectors Is used toner jammed? Is any abnormal mechanical load found? C33 Developer removal shutter function abnormal C35 Transfer belt unit contact/release function abnormal C37 Transfer belt motor rotation abnormal C38 C39 Replace the auto toner sensor Replace the LGC board Reinstall the main charger Reconnect the wire cleaner home position switchReconnect the wire cleaner limit switch Securely C42 Thermistor abnormal after the copier becomes ready FC-22 Troubleshooting C41 C48 Heater abnormal high temperatureError C7 FC-22 Troubleshooting FC-22 Troubleshooting FC-22 Troubleshooting C73 Eeprom initializing error C74 Error of exit sensor automatic adjustment Other service calls C94 Main-CPU abnormal Observe the condition for a whileC9A Main memory abnormal C9E IMC board connection abnormal Replace the laser optical unit CA2 H-SYNC abnormal Is the polygonal motor rotating? Sorter related service call Transport motor rotation abnormal CC3 Bin-shift motor rotation abnormal Guide bar swing motor rotation abnormal Stapler-unit swing motor rotation abnormal Automatic adjustment error of bin inside paper sensor CCA No power being supplied Press the circuit breakerIs the fuse blown out? Replace the fuse Image quality related service call Image quality sensor abnormal OFF level CE2 Image quality sensor no pattern level CE4 Image quality control test pattern abnormal CE5 Temperature/humidity sensor upper-limit abnormal CF1 Color registration control abnormal FC-22 Troubleshooting FC-22 Troubleshooting FC-22 Troubleshooting F11 Communications error between System-CPU and Scanner-CPU FC-22 Troubleshooting Troubleshooting of Image Color deviation Symptoms Few steps at a time Uneven pitch and blur Symptoms FC-22 Troubleshooting FC-22 Troubleshooting Defect of image density, color reproduction and gray balance Background Fogging Moire/lack of sharpness Lack of sharpness Toner offset Feeding direction Vents because they have bad effect on drum Fuser roller pressure defect Check/correct developer sleeve coupling engaging Solid copy Feeding direction White banding in feeding direction directionFeeding Check/correct related circuits Skew slantwise copying Feeding direction LCF Color banding in feeding direction Feeding direction FC-22 Troubleshooting White spots Feeding direaction Cause/Defect area Step Check items Measures Developer unit Poor image transfer Feeding direction Uneven image density Feeding direction Cause/Defect area Image dislocation in feeding direction Feeding direction Image jittering Feeding direction Poor cleaning Feeding direction Oil roller Life ended? Fuser roller Uneven light distribution Feeding direction Blotched image Feeding direction Preparation of PC 3 9 Mode OperationOutline \WEBSHARE\FTPROOT FC-22 Firmware Updating Firmware update operation One of the followings SJP, SEU, SUC, SX SJP Case of 1 Case of #1 #3 Error Message Case of #1 #3 Following screen is displayed after finished Further procedure is the same as normal sequence Following screen will be displayed in 3 9 mode Screen details Press Start Key Case of #1- #3 ’ Press Start Key Error Occurrence Area Power OFF Installation Instructions for Firmware Update through PC System configuration Preparation of PC to use a network FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating Installation of FTP server FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating FC-22 Firmware Updating Wire Harness Connection Diagrams AC Wire Harness DC Wire Harness January 20000 Toshiba TEC