Pcbs, Hdd - Ricoh MP 7503SP Field Service Manual

4. Replacement and Adjustment

PCBs, HDD

Before You Begin
Board Locations
The number of boards has been reduced for the machines of this series. These boards have been
eliminated:
• IPU (Functions moved to the BICU)
• CTL PSU (Controller PSU)
• CNB
• DRB
• PFB
These boards were not in the previous machines:
• RYB (Relay Board)
• AC drive board
• DHB
Inside the Controller Box
[1] BICU
[2] Controller board
[3] HDD
• The BCU of the previous machines has been renamed "BICU" for these machines.
• In the previous machines the BCU was behind the controller box.
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