Ricoh D023, Service Manual, Page: 320 / 1522

Electrical Components
D023/D025 4-144 SM
4.14.6 BICU
1. Rear cover ( p.4-15 "Rear Cover")
2. Scanner rear cover ( p.4-21 "Exposure Lamp")
3. Controller box right cover ( p.4-121 "Controller Box Right Cover ")
4. Disconnect the harness (CN225) on the IOB board.
5. Move the IOB bracket aside ( p.4-122 "Controller Box")
6. BICU [A] ( x 5, x All)
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Make sure the NVRAM is correctly installed on the BICU. Insert the NVRAM in
the NVRAM slot with the "half-moon" pointing [B] to the upward side.
When installing the new BICU
Remove the NVRAM from the old BICU. Then install it on the new BICU after you replace
the BICU. Replace the NVRAM ( "NVRAM Replacement Procedure” in the Appendices)
if the NVRAM on the old BICU is defective.
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Make sure you print out the SMC reports (“SP Mode Data” and “Logging Data”)
before you replace the NVRAM.
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Keep NVRAMs away from any objects that can cause static electricity. Static
electricity can damage NVRAM data.
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Make sure that the DIP-switch settings on the old BICU are the same for the new
BICU when. Do not change the DIP switches on the BICU in the field.
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Make sure the serial number is input in the machine for the NVRAM data; if not,
SC 995-001 occurs.