HL-2030/2040/2070N SERVICE MANUAL
Confidential
8-15
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
12,000 pages
(Counted from the drum unit life.)
Development switching
timing
The developing bias is switched from 450V to 300V gradually
when 2,500 pages are printed.
It is switched to 450V 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 See 3.8 ‘PRINT SPEEDS WITH VARIOUS SETTINGS’ in
Chapter 1.
Paper size The default paper size is "Letter". The paper size needs to be
changed in Europe and other countries.
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