8-43 Confidential
[ 3 ]-3 DBV Tune Up (Code 45-3)
Function
This function is used when it is required to adjust the image density. The adjustment is
implemented by changing the developing bias voltage of each color, and it is changeable by
±7 steps from the standard value “0”.
Always implement the operation when replacing the engine control board.
Operating Procedure
(1) Select NVM Tune UP with using the 4 or 5 key in the initial stage of the factory mode.
After selecting, press the 6 key.
The “45 NVM TUNE UP / ▲ 2 3 4 5 6 7 8 9 A B C D E F G” appears on the LCD.
(2) Select “3” with using the 4 or 5 key and press the 6 key.
The “45 DBV TUNE UP / ► Y / M / C / K” appears on the LCD.
(3) Select the color to be adjusted with using the 4 or 5 key and press the 6 key.
(4) Select the optional number with using the 4 or 5 key and press the 6 key.
The adjusted value is written into the NVRAM.
The value can be adjusted by ±7 steps.
(5) Press the 3 key so that the display is returned to the message described in Step (12).
When adjusting other colors, repeat Step (3) to (5).
(6) Press the 3 key again, and the machine returns to the initial stage of the factory mode.
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