The cover of my engineers programming manual is missing which includes appendix 3 on page 49 can you help, as I need to change the engineers code

Malc [an ex Modern's engineer], April 2010

REFRESHING THE NVM (9600)
If the user and/or engineer codes are lost, or you wish to revert to the standard factory default codes:
1. Remove all power - both mains and battery.
2. Remove the NVM chip IC8 (above the large microcontroller chip).
3. Power up the panel - battery first then mains.
4. Refit the NVM chip.
The panel will now load the standard factory default codes.
5. Re-program the panel with all the installation settings.

acorn, April 2010