Toshiba e-Studio 232
Troubleshooting. Image. 13 Black banding (at right angle with the feeding direction), White spots
13)Black banding (at right angle with the feeding direction)
| Defective area | Step | Check items | Prescription |
|---|---|---|---|
| Main charger | 1 | Is the needle electrode dirty or deformed? | Clean or replace the needle electrode. |
| Fuser unit | 2 | Are the fuser roller, separation finger for fuser roller and thermistor dirty? | Clean them. |
| 3 | Has the cleaning roller, pressure roller, fuser roller and separation finger for fuser roller reached their PM life? | Replace them. | |
| High-voltage transformer (Main charger / Developer bias / Transfer charger) | 4 | Is the high-voltage transformer output defective? | Adjust the output, or replace the transformer. |
| Drum | 5 | Is there a deep scratch on the drum surface? | Replace the drum if the scratch has reached the aluminum base. |
| 6 | Is there thin scratch (drum pitting) on the drum surface? | Check and adjust the contact condition of the cleaning blade and recovery blade. | |
| Scanner | 7 | Is there a foreign matter on the carriage rail? | Remove the foreign matter. |
14)White spots
| Defective area | Step | Check items | Prescription |
|---|---|---|---|
| Developer unit, Toner cartridge |
1 | Is the toner density in the developer material appropriate? | Check and correct the auto-toner sensor and toner supply operation. Check if the amount of the toner is sufficient in the toner cartridge. |
| 2 | Is the doctor-sleeve gap proper? | Adjust the doctor-sleeve gap. | |
| Developer material, Toner, Drum | 3 | Using the specified developer material, toner and drum? | Use the specified developer material, toner and drum. |
| 4 | Have the developer material and drum reached their PM life? | Replace the developer material and drum. | |
| 5 | Is the storage environment of the toner cartridge 35°c or less without dew? | Use the toner cartridge stored in the environment with specification. | |
| 6 | Is there any dent on the drum surface? | Replace the drum. | |
| 7 | Is there any film forming on the drum? | Clean or replace the drum. | |
| Main charger | 8 | Is there any foreign matter on the charger? | Remove it. |
| 9 | Is the needle electrode dirty or deformed? | Clean or replace the needle electrode. | |
| High-voltage transformer (Main charger / Developer bias / Transfer charger) | 10 | Is the high-voltage transformer output defective? | Adjust the output, or replace the transformer. |
| Transfer/Separation charger |
11 | Is there any foreign matter such as fiber in the paper transport area of the transfer/separation charger? | Clean the transfer/separation charger. |