Brother HL-4200CN Service Manual page 352

APPENDIX 1
1.1 When PCB is replaced
The information below is stored in NV-RAM (EEPROM) on ESS.
If necessary, transfer the data to a new PCB.
- U8 (Part number)
1.
2.
3.
4.
5.
- U9 (Part number)
The information stored is specific to the Controller Board, therefore, the
information cannot be used for the new PCB.
- U7/U38 (Part number)
Job Log is stored, however, the Job Log cannot be transferred to the new PCB
because it is surface-mounted.
The Network setting data is stored in EEPROM on NIC EXCORD ASSY. Use the
same NIC EXCORD ASSY if you want to keep the same Network setting.
Data set with Control Panel
NV-RAM data on MCU that is saved manually
Error Log
Jam Log
Billing Counter