Electrical Components
D255/D256/M281/M282 4-148 SM
 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.
IOB (SP 5300/5310)
1. Remove the controller box. (page 4-132)
2. Disconnect the two connectors, and then release them from the harness guides.
3. Remove the bracket [A]. (hook×2)
4. Disconnect the two flat cables.
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