KUKA KR C4 Motherboard can't boot

Quote from Aqprox

Hello, I have a strange problem. After power shut down the CR4 motherboard Fujitsu-D3445-K1 (Skylake) can't start/boot from internal PSU. 27V is ok at connector. Appear the HW MON Fault red, but Green led is ok close to cmos 3V battery. And 3.3V on LDO is ok Close to CMOS battery. CMOS battery changed. When Main power switch is on, spin up the CPU cooler 0.5sec (power from mainboard) and stop, but thats all. Anyway other parts(Robot control etc) looks like works well.

If try external PSU (ATX connector) That is start booting normally ..Bios windows etc...looks like good.

Where find Motherboard manual PDF?(details)
Anyway How is start the Mainboard? Like Wake on lan?
And found an jumper close to lan ports, what is that? Where is the Bios/cmos reset?

What should be check or set in bios?
Where can I find Bios update file?(fujitsu hompage just D3445-S)

Thanks

Probably the motherboard is faulty. Under normal conditions, when you turn on the power, the motherboard should automatically start.

"Where can I find the Motherboard manual PDF? (details)"

You cannot find the exact manual because the motherboard is custom-made by Fujitsu for KUKA. You can found similar models.

"Anyway, how do you start the Mainboard? Like Wake on LAN?"

If the BIOS battery is dead, the default BIOS settings will be lost. In an emergency, you can use the PW_ON pins on the motherboard. You can achieve the same result by connecting the purple wire and the black wire on the ATX power supply.

"What should be checked or set in BIOS?"

Generally, you cannot enter or change the BIOS settings because it is protected by an unknown password set by KUKA.

"Where can I find the BIOS update file? (Fujitsu homepage only shows D3445-S)"

Do not try this, as the motherboard is equipped with a special firmware customized by KUKA and optimized for the correct operation of the system. Even if you manage to update the BIOS somehow, your motherboard will be useless. KSS reads the motherboard versions and HW codes and decides whether to start the system. Do not try this!