Defective area |
Step |
Check items |
Prescription |
Density/Gray balance |
1 |
Check the density/gray balance. |
Adjust the density. |
Printer section |
2 |
Check test print image (04-113). |
Go to step 4 if there is any problem on image. |
Scanner |
3 |
Are the original glass, mirrors and lens dirty? |
Clean them. |
Printed image |
4 |
Is the image faded? |
Perform troubleshooting for faded image. |
5 |
Is background fogging occurring? |
Perform troubleshooting for back- ground fogging. |
6 |
Is there a blotch on the image? |
Perform troubleshooting for blotched image. |
7 |
Is the image transferred normally? |
Perform troubleshooting for abnor- mal transfer. |
Defective area |
Step |
Check items |
Prescription |
Density reproduction |
1 |
Check the reproduction of the image density. |
Adjust the density. |
Background reproduction |
2 |
Check the background reproduction. |
Adjust the background. |
Printer section |
3 |
Check test print image (04-113). |
Go to step 4 if there is any problem on image. |
Scanner |
4 |
Are the original glass, mirrors and lens dirty? |
Clean them. |
Auto-toner |
5 |
Is the auto-toner sensor normal? |
Check the performance of the auto- toner sensor and readjust. |
6 |
Is the toner supplied normally? |
Check the motor and circuits. |
High-voltage transformer (Main charger / Developer bias) |
7 |
Is the high-voltage transformer out- put defective? |
Adjust the output, or replace the transformer. |
Developer unit |
8 |
Is the contact between the drum and developer material normal? |
Adjust the doctor-sleeve gap and polarity. |
Developer material/Toner/ Drum |
9 |
Using the specified developer mate- rial, toner and drum? |
Use the specified developer material, toner and drum. |
10 |
Have the developer material and drum reached their PM life? |
Replace the developer material and drum. |
11 |
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 |
12 |
Is the drum cleaned properly? |
Check the pressure of the drum cleaning blade. |
Toner dusting |
13 |
Is toner heaped on the seal of the developer unit? |
Remove the toner and clean the developer unit. |