DX 5271F Flashes green no screen then warning light beeps than it powers down

[Techboy]

I am working on a 527F When power on the green light flashes under the Z than around thirty seconds the Warning light starts beeping and maybe another 30 seconds the power switch flips to off. The Operation panel never comes on in the process.

[MunsterTech]

Hi,

If you check the service manual there should be a flow chart telling you the fault. I've had this several times on iradc257 turned out to be power supply

[Techboy]

Hi,

If you check the service manual there should be a flow chart telling you the fault. I've had this several times on iradc257 turned out to be power supply

I do not have a service manual, the green light flashes 3 times pauses than 3 more time with the yellow fault light on. The screen that never lights is 5X7 screen with no manual push buttons.

[craigster]

you need to check to see if any voltage is coming out of the power supply connector to the main controller but I had one recently and turned out to be main controller.

[julka123]

I am working on a 527F When power on the green light flashes under the Z than around thirty seconds the Warning light starts beeping and maybe another 30 seconds the power switch flips to off. The Operation panel never comes on in the process.

hi ,
replace dc Controller if not working you have faulty mn controller.