[ranjankrana]

When machine is put ON, "Loading Basic to DRAM" appears then screen goes off.

In Main CPU, A16B 3200 0190, Status (Green) LED 1,3,4 ON & Alarm (Red) 2 LED ON & as per the manual, Status indication in power on routine indicates "Waiting for other CPU answer"

In MMC IV, A16B - 2203 - 0180, Alarm LED 3 ON & we dont have details pertaining to this.

Following action taken to counter the problem :

1. CNC Power supply, MMC PCB with Hard disk & Main CPU of the subject machine fitted on another similar machine and found to be ok.

2. Interconnecting cable between MMC & Main CPU interchanged.

3. To isolate problem with I/O, I/O link cable JD1A disconnected from Main CPU and switched ON, still same problem

4. 24 V DC on rear side of LCD found to be quite alright (ie. 23.9V & not dropping during power ON)

5. "FROM" initialized and reloaded System data & SRAM data from another similar machine.

6. Connectors viz JS1 -4, JF21-24, JA7A, JD1A, JD 5A & JA2 on Main CPU removed and switched ON.

7. Similarly connectors on MMC IV detached & switched ON

8. Back panel cleaned and fitted back.

Please suggest to solve the problem....

Thanks in Advance,

Regards,

Ranjan Kumar Rana

[Dan Fritz]

Why not call a Fanuc service engineer?

[harshgangrade]

reload the basic software once again and check

[cncrepairs]

Pl confirm the system confrigaration ,is there any optional board is (optional 1,2,3 ) is used as u said that the cnc is waiting for the other cpu to get ready ,I think optional board may not be ready. pl specifiy the machine details .

cncrepairs