Sc401 Development Gamma Low Error; Does The Pattern Appear Blurred? - Ricoh Pro 8300S Troubleshooting Manual

5.Other Information

SC401 Development Gamma Low Error

This section describes how to manage SC401, toner scatter, and dirty background. Conditions that
increase the risk of these problems include:
 Allowing the machine to remain idle for long periods where the humidity is high.
Where average coverage is consistently 4% or lower.

 20 P/J or lower average P/J
Causes
1. Process control fails. The development gamma detected in process control was lower than 3.0
because the ID sensor pattern created on the drum was blurred.
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2. Due to the degradation of toner over time, and the adhesion of toner on the doctor blade, the
amount of developer supplied to the development roller decreased and development gamma
becomes fell lower than 3.0.
In addition to SC401, toner scatter and dirty background could also occur because the system

supplies too much toner to compensate for reduced development gamma.
Solution
Do these procedures if the machine is issuing SC401, or if you observe toner scatter or dirty
backgrounds in prints.
1. Open SP2109-003, select Patter #12 (2-dot Independent Pattern), and then print three copies of
the pattern on A3/DLT.
2.

Does the pattern appear blurred?

Yes Do the following SP settings:
SP2810-001: 1 (default). This setting will automatically execute "Clear Blurred Image"

at all times.
SP2810-005: 360 (default). Set to "120". This setting will automatically execute "Clear

Blurred Image" if the machine remains idle for 2hrs.
 SP2810-006: 13 (default). Set to "7". This setting will automatically execute "Clear
blurred image" even when the machine is operated in a medium temperature, medium
RH environment.
Do SP2810-004 (Clear blurred image).
Go to Step 3.
868
(Blurred Images (Convex Lens