Beli Posted December 22, 2011 Share Posted December 22, 2011 Hi , I try to replace the power supply in my HP xw4600 with an AX 1200. When I power on, the system try to start for 1 sec., the the power supply clicks and the computer beep 2 times and the red led blink 2 times. According to the HP xw4600 Workstation, Service and Technical Reference Guide the system report a thermal shutdown. The pin test work fine. The cmos was reset. The inconsistency in pin 12-20-23 on the the 24 pins connector had been resolved. I've try to remove the pin 16 and put it to ground....and the CPU fan goes crazy ... The old power supply still work in the system.... Any help ? Pierre Béliveau ..sorry for my bad english... Link to comment Share on other sites More sharing options...
Synthohol Posted December 22, 2011 Share Posted December 22, 2011 some manufacturers change the ATX spec to their proprietary pinout design so you are FORCED to buy one from them, i think you may have fell victim to HP's short sightedness. Link to comment Share on other sites More sharing options...
Beli Posted December 22, 2011 Author Share Posted December 22, 2011 In this case, there is 3 pinout mismatch (12-20-23) but in reality the original connector don't have any cable in these pins. I just remove the 3 cables on the new connector. Pierre Link to comment Share on other sites More sharing options...
Synthohol Posted December 22, 2011 Share Posted December 22, 2011 12 is a 3.3 which i guess is not important to your board? the 5v ground at 20 is no issue and the 5v+ at 23 is weird its not required either. leave it to HP/Compaq to mess with a standard just to get you to only buy their products... i hate that, gateway is the same way, all jumbled up on the boards ive worked on. anyway im glad it worked out for you but removing pins may void your warranty. Pin Name Color Description 1 3.3V Orange +3.3 VDC 2 3.3V Orange +3.3 VDC 3 COM Black Ground 4 5V Red +5 VDC 5 COM Black Ground 6 5V Red +5 VDC 7 COM Black Ground 8 PWR_OK Gray Power Ok is a status signal generated by the power supply to notify the computer that the DC operating voltages are within the ranges required for proper computer operation (+5 VDC when power is Ok) 9 5VSB Purple +5 VDC Standby Voltage (max 10mA) 10 12V Yellow +12 VDC 11 12V Yellow +12 VDC 12 3.3V Orange +3.3 VDC 13 3.3V Orange +3.3 VDC 14 -12V Blue -12 VDC 15 COM Black G 16 /PS_ON Green Power Supply On (active low). Short this pin to GND to switch power supply ON, disconnect from GND to switch OFF. 17 COM Black Ground 18 COM Black Ground 19 COM Black Ground 20 -5V White -5 VDC (this is optional on newer ATX-2 supplies, it is for use with older AT class expansion cards and can be omitted on newer units) 21 +5V Red +5 VDC 22 +5V Red +5 VDC 23 +5V Red +5 VDC 24 COM Black Ground Link to comment Share on other sites More sharing options...
Beli Posted December 23, 2011 Author Share Posted December 23, 2011 Hummm! I see some redundancy there... I don't bother with the warranty, Corsair is a big enterprise, if there is a problem with the AX1200, they will correct it. Link to comment Share on other sites More sharing options...
Wired Posted December 23, 2011 Share Posted December 23, 2011 There's nothing wrong with the ATX specification or the PSU. It's just not compatibile with your OEM system in all likelyhood. Link to comment Share on other sites More sharing options...
mycorrado Posted February 25, 2012 Share Posted February 25, 2012 There are additional pin inconsistencies with the xw workstations.. check to make sure the other motherboard connector is in spec. I had similar issues with an XW8600 and third party supplies beeping at me.. Link to comment Share on other sites More sharing options...
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