Ricoh G081, Service Manual

Page: 132 / 272

PRINTER CONTROLLER SERVICE MODE
G081/G092 5-8 SM
The gradation scales marked “Default” are printed according to the default gamma
settings in the flash ROM in the controller. The gamma adjustment changes the
densities at the adjustable points within the gradation scale. The gradation scale
marked “Current” shows the current settings.
During the adjustment procedure, compare the “Current” gradation scale with the
“Default”. Select the density for each of the 15 adjustable points, excluding points 0
and 255, from the “Default” gradation scale.
The NVRAM holds three sets of controller gamma settings:
•
Those saved this time: ToneCtlSet - Tone (Current)
•
Those saved in the previous adjustment: ToneCtlSet - Tone (Prev)
•
The factory settings: ToneCtlSet - Tone (Factory)
Adjustment Procedure
1. Enter the controller service mode.
2. Use the down arrow key to select “ToneCtlSet” (there are two of these in the
menu; select the second one SP1102) and press the Enter key.
3. Use the up/down key to select the mode that requires calibrating (Press the
Enter key to select), then press the Escape key until you get back to the
controller service mode menu.
4. Use the down arrow key to select “SP1103 PrnColorSheet” and press the Enter
key.
5. Use the up/down key to select “SP1103-001 ToneCtlSheet” (normally this is
displayed by default) and press the Enter key.
6. When “Execute?” is displayed, press the Enter key to print out the “color
calibration test sheet.”
7. When “Execute OK” is displayed, press the Escape key 2 times to exit from the
menu. (You are then returned to the “PrnColorSheet” in the controller service
menu.)
8. Use the down arrow key to select “ToneCtlValue” and press the Enter key.