FANUC A20B-1006-0470 is the internal wiring and power printed circuit board documented for the FANUC Alpha PSM-15 power supply module A06B-6087-H115. It supports the module’s main power connections and power-stage circuitry. This item is a replacement PCB, not a complete PSM-15 power supply.

Revisions including /01A, /03B and /05BR have been observed in service. The complete suffix, component layout, terminals and connectors must match the original board before replacement.

A20B-1006-0470 Product Information

PSM-15 Power Board Function

Within the PSM-15, the A20B-1006-0470 provides the wiring platform for power terminals, protection components and internal power-stage connections. The associated A16B-2202-0421 performs the control functions, so these two boards should not be confused during fault diagnosis or ordering.

Revision and Module Compatibility

Confirm the complete A20B-1006-0470 revision, host module A06B-6087-H115, control-board revision, terminal arrangement, connectors and mounting points. Do not substitute A20B-1006-0471, A20B-1006-0472 or another similar PSM board based only on appearance.

Testing and Installation Notes

REACO CNC checks the identification, terminals, fuse holders, connectors, solder joints and major components, followed by applicable electrical and functional testing. Qualified personnel must isolate the machine and allow the DC link to discharge completely before opening or removing the power supply module.

Related resources: FANUC circuit boards, FANUC drives and power modules and FANUC CNC repair services.