HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL
Confidential
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3. NVRAM DEFAULT VALUE
The default values for the main items to be set in NVRAM are as follows;
Items Descriptions
Timing of Drum LED ON
25,000 pages
(Counted from the drum unit life.)
Development switching
timing
The developing bias is switched from 400V to 300V gradually
when 4,000 pages (Standard cartridge), 7,000 pages (High
yield cartridge) are printed.
It is switched to 400V again when the toner cartridge is
replaced with the new one.
(Counted from the number of the drum rotation in non-
continuous printing)
Fixing temperature
• Transparency: 185°C
• Thin paper: 195°C
• Plain paper: 213°C
• Thick paper: 200°C
• Thicker/Bond paper: 200°C (in non-continuous printing)
Smaller size mode Refer to 3.8 ‘PRINT SPEEDS WITH VARIOUS SETTINGS’ in
Chapter 1.
Paper size The default paper size is "A4". The paper size needs to be
changed in US and other countries.
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General
Weight and Dimensions
