Electrical Components
SM 4-149 D255/D256/M281/M282
Replacement
and Adjustment
5. Remove the IOB [A].
6. Remove the NVRAM [A] from the old IOB and attach it to the new IOB.
Install a NVRAM [A] so that the indentation [B] on the NVRAM corresponds with the
mark on the IOB. Incorrect installation of the NVRAM will damage both the IOB and
NVRAM.
Replacing the NVRAM (EEPROM) on the IOB
1. Make sure that you have the SMC report (Factory SP Settings). This report comes with the
machine. If you do not have the SMC report, enter the factory settings while referring to the
“Factory SP Settings”.
2. Output the SMC data “ALL” using the SP 5990-001(Print) or SP 5992-001 (SD card).
3. Power off the main power and unplug the power cord.
Rev. 02/09/2017
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