Toshiba e-Studio 6540C
Troubleshooting. Image 1. Color deviation
Symptoms
| Original mode | Location | Phenomena |
|---|---|---|
| All modes | Color blurred in outline of white text or illustration on a colored background | Color deviation |
| Text Mode, Text/Photo Mode | Outline in black text on a colored background | White void |
| Photo Mode, Map Mode | Color blurred in outline of line or tex | Color deviation |
Procedure
| Cause/Section | Step | Check Item | Measures |
|---|---|---|---|
| 1 | Perform the Forced performing of color registration control adjustment (FS-05-4719). | Has it ended normally? When CA00 occurs: → Proceed to [CA00] troubleshooting. | |
| 2 | Output the built-in grid pattern in A3/LD size. (Perform [8][FAX] at 05 startup.) | Perform steps 1 and 2 several times and check the direction and tendency of the grid pattern deviation. | |
| 3 | Check the direction and tendency of the grid pattern deviation. | i) When evenly deviated in the transfer direction, and when deviated in a regular manner such as in the order of Y, M, C, K or K, C, M, Y: → Perform steps 4, 5, 6 and 7. ii) When evenly deviated in the laser scanning direction → Perform steps 8, 9 and 10. iii) When cyclically deviated in the transfer direction: „_ Perform steps 11, 12, 13, 14 and 15. iv) When laser scanning lines are curved: → Perform steps 16. v) When the deviation amount in the transport direction is different between the start point and the end point of the scanning direction: → Perform steps 17. |
|
| Poor transport of the belt of the transfer belt unit | 4 | Is the surface of the 2nd transfer facing roller of the transfer belt unit dirty or worn out? | Clean or replace the 2nd transfer facing roller. |
| Large driving load in the 2nd transfer | 5 | Is the 2nd transfer roller locked?) | Replace the 2nd transfer roller and 2nd transfer cleaning blade. |
| Large driving load in the transfer belt unit cleaner | 6 | Is the transfer belt unit cleaner blade peeled?. | Replace the transfer belt unit cleaner blade. |
| Poor transport of the belt of the transfer belt unit | 7 | Is there any cause that slows the transport speed of the transfer belt? | Remove the cause or replace the transfer belt unit. |
| Installation of the transfer belt unit | 8 | Is the transfer belt unit seated all the way and installed? Is it installed slanted? | Install the transfer belt unit correctly. |
| Meandering of the transfer belt | 9 | Is the belt guide of the transfer belt unit installed correctly? | Install the transfer belt correctly. |
| Meandering of the transfer belt | 10 | Is the pointer of the angle indicator of the transfer belt unit steering mechanism within the +/- 2 scale points? | Correct it. |
| Fluctuation in drum speed | 11 | Is the process unit seated all the way and installed? | Replace the cleaning blade. |
| Fluctuation in drum drive unit speed | 12 | Is the drum drive unit installed normally? | Check the installation. Or, replace the drum drive unit. |
| Drum speed abnormality | 13 | Is an abnormal value set for drum motor rotation speed setting value (05-4520)? | Set the value to 128. |
| Fluctuation in transfer belt speed | 14 | Is the transfer belt driving gear installed normally? Is there any breakage or deformation of the transfer belt driving gear?. | Check the installation of the gear, or replace it. |
| Fluctuation in transfer belt speed | 15 | Is the 2nd transfer facing roller shaft deformed? | Replace the 2nd transfer facing roller. |
| 16 | Is the transfer belt drive motor installed correctly? | Install the motor properly with a fixing screw in the correct position. | |
| Laser scanning lines warped | 17 | Are the laser scanning line warped? | Replace the laser optical unit. |
| Poor skew adjustment of laser optical unit | 18 | Is a laser scanning line of any specific color inclined to those of other colors? Is there any color whose color characteristic is significantly different from others? | Perform steps 1 and 2 several times, and when tendencies do not change: - Check the laser optical unit related harness connections. - Reinstall the laser optical unit. - Or, replace the laser optical unit |