Ricoh Pro 8300S - Firefly, Comet Patterns

2.Image Quality Problems
661
Firefly, Comet Patterns
White spots in firefly patterns, or black comet streaking patterns appear.
Cause:
White firefly patterns with white spots in the center are caused by toner clumps. If these clumps break
down in the development unit, black streaks in the shape of comets may appear. This can occur when:
 The machine has remained idle for a long period, especially where ambient temperature was high.
 The machine was moved or shipped and was subjected to severe shock or vibration.
 Toner not used for a long period, especially where ambient temperature was high.
Solution:
1. Print a test sheet at 100% coverage. Are there firefly or comet patterns?
Yes
Go to the next step.
No
Finished.
2. Print 350 A3 sheets at 100% coverage. Are there firefly or comet patterns?
Yes
Go to the next step.
No
Finished.
3. Replace toner, and then print 350 A3 sheets at 100% coverage. Are there firefly or comet patterns?
Yes
Go to the next step.
No
Finished.
4. Replace the toner sub hopper, and then print 350 A3 sheets at 100% coverage. Are there firefly or
comet patterns?
Yes
Go to the next step.
No
Finished.
5. Replace the development unit and the developer, and then print some test prints at 100%
coverage. Are there firefly or comet patterns?
Yes
The problem requires further analysis. Consult the product specialist.
No
Finished.