Brother International HL-2600CN Service Manual - Page 159

45-3 DBV TUNE UP This mode shall be used when the image optical density needs to be adjusted. Adjustment of the developer bias voltage against the reference value 0 (zero) in the range between the step -4 and +4. Description of Procedures 1) Press the Reprint button after selecting "NVM TUNE UP". (a) (b) a) 2) After selecting DBV TUNE UP Code 3, press the Reprint button. (b) (c) 3) After selecting the color to be adjusted, press the Reprint button. (Ex. Magenta). b) (c) (d) 4) The adjustment value can be adjusted in 8 steps between -4 and +4. c) After selecting a given number, press the Reprint button. (d) (e) 5) Press the - button to finish the adjustment d) work for Magenta. (d) (e) Repeat steps 3 to 5 for each color. 6) Press the - button to finish the DBV adjustment work. (e) (f) e) LCD Message 39 FACTORY MODE NVM TUNE UP 45 NVM TUNE UP 12345678910 12 16 45 DBV TUNE UP Y/M/C/K 45 MAGENTA [-1] -+ 45 DBV TUNE UP Y/M/C/K 45 NVM TUNE UP f) 12345678910 12 16 V-34