Nvram Default Value - Brother HL-1850 Service Manual

APPENDIX 19.

NVRAM DEFAULT VALUE

The default values for the main items to be set in NVRAM are as follows;
Items
Timing of Drum LED ON
Development switching
timing
Fixing temperature
Smaller size mode
<The Developing Bias Reset Function>
This function makes a counter reset for initializing the developing bias function when changing
the new toner cartridge before the previous one gets empty for any reason.
With the following settings, the developing bias reset function operates.
1. Open the front cover, and take the drum unit out.
2. Press the "GO" switch once when keeping the front cover open.
3. Install the drum unit into the printer.
4. Press the "GO" switch again when keeping the front cover open.
5. Close the front cover.
Descriptions
16,000 page
(Counted from the drum unit life.)
The developing bias is switched from 400V to 300V when
7,000 pages are printed.
It is switched to 400V again when the toner cartridge is
replaced following the "TONER EMPTY" error message
(Counted from the number of the drum rotation in non-
continuous printing)
• Transparency: 170°C
• Thin paper: 185°C
• Plain paper: 208°C (195°C when printing using duplex
function)
• Thick paper: 220°C
• Thicker/Bond paper: 220°C (in non-continuous printing)
See APPENDIX 16 'PRINT SPEEDS WITH VARIOUS
SETTINGS'.
A-27
APPENDIX