{"product_id":"fanuc-a20b-1005-0421-cnc-power-supply-pcb","title":"FANUC A20B-1005-0421 CNC Power Supply PCB","description":"\u003cp style=\"margin: 0 0 14px;\"\u003e\u003cstrong\u003eFANUC A20B-1005-0421\u003c\/strong\u003e is a \u003cstrong\u003econtrol-unit power supply printed circuit board\u003c\/strong\u003e used in compatible FANUC CNC hardware. FANUC Series 0i Model A maintenance documentation lists this PCB as the power supply board for the control-unit assembly.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eThe documented complete power-supply ordering number is \u003cstrong\u003eA20B-0279-H100\u003c\/strong\u003e, while A20B-1005-0421 is the identification printed on the PCB itself. Some market listings call it an FS20\/F0i power supply, but replacement should be based primarily on the actual PCB number and original control configuration.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eA20B-1005-0421 Product Information\u003c\/h4\u003e\n\u003ctable cellpadding=\"10\" style=\"width: 100%; border-collapse: collapse; margin: 0 0 18px;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 34%;\"\u003e\n\u003ccol\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFANUC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel \/ MPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-1005-0421\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCNC control-unit power supply PCB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDocumented CNC Series\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFANUC Series 0i Model A; selected 0i-TA and 0i-MA configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eComplete Supply Order Code\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-0279-H100\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl-Unit DC Input\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24VDC through CP1A in documented configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eMonitor DC Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e24VDC through CP1B for the CRT monitor in documented configuration\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew, refurbished, or used 90% new; subject to stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% tested before shipping; test video available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHandling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNormally 1–2 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping \/ ETA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDHL, UPS, or FedEx worldwide; typically 3–7 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year for new\/refurbished; 3 months for used 90% new\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eService \/ Packing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree technical support; anti-static reinforced packing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eControl-Unit Power Distribution\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eThe A20B-1005-0421 supports the regulated power requirements of the associated CNC control hardware. In the documented 0i-A arrangement, CP1A provides the 24VDC control-unit input and CP1B supplies a 24VDC output for the CRT monitor. Internal distribution and connector use depend on the complete FANUC assembly.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003ePCB Number vs. Complete Power-Supply Code\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003e\u003cstrong\u003eA20B-1005-0421 identifies the power supply PCB\u003c\/strong\u003e, while \u003cstrong\u003eA20B-0279-H100 identifies the documented complete supply ordering assembly\u003c\/strong\u003e. The two numbers describe related but different identification levels. Confirm whether the quotation includes only the board or the complete mounting assembly.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eCompatibility and Installation Checks\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eConfirm the full PCB number, revision, control model, mounting points, connectors, fuse and surrounding assembly against the original part. Do not substitute another A20B-1005 power board based only on appearance. Disconnect the CNC supply and allow stored energy to discharge before installation.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eRelated resources: \u003ca href=\"\/it\/collections\/fanuc-pcbs\"\u003eFANUC PCB boards\u003c\/a\u003e, \u003ca href=\"\/it\/collections\/fanuc-controls\"\u003eFANUC CNC controls\u003c\/a\u003e and \u003ca href=\"\/it\/products\/fanuc-mitsubishi-cnc-robot-parts-repair\"\u003eFANUC power supply and CNC repair services\u003c\/a\u003e.\u003c\/p\u003e","brand":"FANUC","offers":[{"title":"Used (90% New)","offer_id":67935466062039,"sku":"A20B-1005-0421-used","price":132.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/3784\/4183\/files\/fanuc-a20b-1005-0421-power-supply-main.webp?v=1793350434","url":"https:\/\/reacocnc.com\/it\/products\/fanuc-a20b-1005-0421-cnc-power-supply-pcb","provider":"REACO CNC","version":"1.0","type":"link"}