Service manual

PROCESS CONTROL
SM 6-9 G130/G131
Detailed
Descriptions
Process Control Self Check
This machine uses the process control self check method to do the potential
control. The machine uses seven types of process control self check. These are
categorized according to their execution timing:
1. Forced
This is done when SP3-126-1 is used.
2. Initial
This starts automatically when the power is turned on, or, when the machine
recovers from energy saver mode (you can change this with SP3-125-7). This
occurs only if the fusing unit pressure roller temperature is 60°C or less.
3. Interval: Job End
This starts automatically at the end of a print job when the total print counter for
this feature exceeds 200 (you can change this with SP3-906-1). The counters
are reset to ‘0’ after all process control is done (except for forced process
control).
4. Interval: Interrupt (default: not done)
This interrupts printing and then starts automatically at the following times:
1) When the machine makes a certain number (A) of continuous color prints in
the same job
2) The main scan length detection is executed.
After the above are completed, the machine continues to make prints.
You can adjust value A with SP3-906-2 (default: off). At this time, only VREF is
corrected. Potential control (VD, VB, VL correction) is not done.
5. Non-use Time (default: not done)
This starts before the next print job if the machine has no job for a certain time
(M) after it makes more than a certain number (N) of prints.
You can adjust M with SP3-906-4. You can adjust N with SP3-906-3.
6. After Toner End Recovery
This starts after recovery from a toner end condition.
7. After Developer Initialization
The machine executes the Auto Toner Density Adjustment (SP3-125-003). This
starts after a developer initialization is done. Developer initialization occurs
automatically after a new development unit has been installed.