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MITSUBISHI ELECTRIC FC810 User Manual

Page 36

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MITSUBISHI ELECTRIC MOTHERBOARD DIVISION

PAGE 36 OF 45

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The motherboard power requirements are heavily dependent on system configuration and the
software being used. The table below can be used as a guide to the likely power supply
requirements. They are measured using a 400MHz Intel Celeron Processor and 2 memory
modules running stress test software designed to yield worst case results. They should not,
however, be regarded as maximum values.

")

*+,
)

*+,

*-.-,

*/0,

1/0,

1+,

Voltage
Tolerance

5%

5%

4%

5%

10%

10%

Maximum
Current (in above
configuration)

20mA

4.6A

1.9A

360mA

30mA

0mA

Note that these figures do not cover cards plugged into the slots.

When operating this motherboard with a power supply that does not provide a +5V
standby output, the PL8 jumpers (installation guide reference 2) must be fitted.

Advisory

Mitsubishi has found that some power supplies generate damaging voltages on their main
outputs when their +5V standby output is over-loaded.

The PCB is a four-layer design measuring W7.8” x L9.6”. It is ATX 2.01 compliant. The inner
power planes are arranged so that the ground plane is nearest the top component layer.

The PCB has a UL flammability rating of 94V-0.