Kyocera FS-2020DN-3920DN-4020DN-TSG-UK free download

File name FS-2020DN-3920DN-4020DN-TSG-UK.pdf

FS-2000D, FS-3900DN, FS-4000DN, FS-2020D, FS-3920DN, FS-4020DN GRAY BACKGROUND ISSUE TROUBLESHOOTING GUIDE KDE PRODUCT ENGINEERING FS-2000D, FS-3900DN, FS-4000DN, FS-2020D, FS-3920DN, FS-4020DN GRAY BACKGROUND ISSUE TROUBLESHOOTING GUIDE INDEX Page 2 Hardware issue Page 3 Software issue Page 7 Appendix Page 9 HARDWARE ISSUE Page 3 As countermeasures against the fog image from the discolored main charge roller surface, the following points were changed so that the main charger roller surface can be better cleaned. 1. Change of the BUSH MC ROLL: The hole of the bush was changed from oval to round in order to limit vertical movement of the cleaning brush within the oval hole. (Change of the hole of the brush opposite to the drive side was informed by SB-2F8-0025-8520.) 2. Change of the ROLLER MC CLN B: The brush density was changed from 180KF to 120KF in order to adjust contact pressure with the MC roller due to the change above. 3. Adding SHEET ROLLER DRUM: The SHEET ROLLER DRUM was added in order to prevent toner from passing through to the drum (DK-320 only). Detailled information you will find in Service Bulletin 2F8-0036(A053) HARDWARE ISSUE Page 4 If the background (related on DK-320/MC-302) still occurs, please follow the next steps: Sample 1 Sample 2 Sample 3 Sample 4 continue on the next page HARDWARE ISSUE Page 5 continue on the next page HARDWARE ISSUE Page 6 SOFTWARE ISSUE Page 7 The gray background might appear when refilling toner. The margin for gray background was improved by regulating the amount of refilled toner when the toner is installed after [Replace toner] or [Low toner] was displayed. These versions are implemented in the Released Firmware Version 08.00.0030! Detailled information you will find in Service Bulletin 2J0-0029 (B398) SOFTWARE ISSUE Page 8 When the weather gets colder, the