Mitsubishi Electronics FC810 manual Advisory

￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿ ￿

!￿￿￿￿￿￿￿￿￿￿

￿￿￿￿￿￿￿ "￿￿￿￿￿￿￿￿￿

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	￿5%	￿5%	￿4%	￿5%	￿10%	￿10%
Tolerance
Maximum	20mA	4.6A	1.9A	360mA	30mA	0mA
Current (in above
configuration)

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.

MITSUBISHI ELECTRIC MOTHERBOARD DIVISION PAGE 36 OF 45