| Defective area |
Step |
Check items |
Prescription |
| Adjustment |
1 |
Perform the shading correction. |
Perform 05-3218. If an error occurs, retry it. If the error still persists, clean the original glass. |
| Density reproduction |
2 |
Check the reproduction of the image density. |
Adjust the density. |
| Background reproduction |
3 |
Check the background reproduction. |
Adjust the background. |
| Printer section |
4 |
Check test print image (04-114). |
Go to step 5 if there is any problem on image. |
| Scanner |
5 |
Are the original glass, mirrors and lens dirty? |
Clean them. |
| Auto-toner |
6 |
Is the auto-toner sensor normal? |
Check the performance of the autotoner sensor and readjust. |
| 7 |
Is the toner supplied normally? |
Check the motor and circuits. |
| High-voltage transformer (Main charger / Developer bias) |
8 |
Is the high-voltage transformer output defective? |
Adjust the output, or replace the transformer. |
| Developer unit |
9 |
Is the contact between the drum and developer material normal? |
Adjust the doctor-sleeve gap and polarity. |
| Developer material/Toner/ Drum |
10 |
Using the specified developer material, toner and drum? |
Use the specified developer material, toner and drum. |
| |
11 |
Have the developer material and drum reached their PM life? |
Replace the developer material and drum. |
| |
12 |
Is the storage environment of the toner cartridge 35°c less without dew? |
Use the toner cartridge stored in the environment within specification. |
| Drum cleaning blade |
13 |
Is the drum cleaned properly? |
Check the pressure of the drum cleaning blade. |
| Toner dusting |
14 |
Is toner heaped on the seal of the developer unit? |
Remove the toner and clean the developer unit. |
