Brother International HL-2600CN Service Manual - Page 161

45-5 FBV TUNE UP This mode should be used when image defects attributed to the transfer drum need to be improved. Adjustment is to adjust the drum cleaner 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 FBV TUNE UP Code 6, press the Reprint button. (b) (c) 3) The adjustment value can be adjusted in 8 steps between -4 and +4. b) After selecting a given number, press the Reprint button. (c) 4) Press the - button to finish the adjustment c) work for FBV. (c) (d) LCD Message 39 FACTORY MODE NVM TUNE UP 45 NVM TUNE UP 12345678910 12 16 45 FBV TUNE UP -+ d) 45 NVM TUNE UP 12345678910 12 16 V-36