[JerryH]

Controller will not power up, therefore no CRT display. Power supply is on with no alarms, but on the main board LED's the top row is green in all 4 banks with 1 red light in the second bank of the bottom row. Maintenance manual states that it is a generic alarm.

Had the main board tested by Fanuc and they said it was O.K. Where to look next?

[fanuservicetech]

Please observe the LED status on main CPU when you turn on the braker on the machine. See if the LEDs on main CPU comes on as soon as you turn the braker on (this is not normal since they should only come on when control ON is pressed). If this is the case, you have a bad power supply (part number A16B-1212-xxxx). Otherwise please post the main CPU board number so that we can find out the LED status meaning for you.

[JerryH]

LED's on main board do NOT come on when power is supplied at breaker (only come on when the power on button is pressed). The only LED that comes on is the single green light on the power supply itself.

Main board #is A16B-2201-008

[Suleman Khosa]

i think there is problem of ROM or Ram in machine controller

[turninjake]

I have a 18t lathe.
When I try to power on the controller I get 4 green lights and 1 red light in the second spot.

Any ideas?

[Dragonbikes]

I HAVE THE SAME PROBLEM IN ONE LAHTE NAKAMURA-TOME-20II.
MY CONTROL IS FANUC 18TA.
I HAVE OTHER MANUALS AND PARAMETER OF THIS MACHINE.
INCLUDE SPECIAL PARAMETER.
IF SOMEBODY THIS INTERESTED IN THIS PARAMETER I CAN TO SHARE THIS INFORMATION.
THANK YOU FOR ANY INFORMATION THAT HELPS ME TO LEAVE TO THIS PROBLEM.

THANK YOU

ROMMEL ROJAS

[Suleman Khosa]

Hi,

I m suleman khosa, i need your help in one matter.
i have one CNC machine in fanuc 18i system was installed. When I On that machine early in tthe morning then its gave alarm of system 970 NMI occured in PMC LSI. Manual said that replace the motherboard, please give me another solution to repair that unit or any other way of solving problem.

My email id is [email protected]

[fanuc-support.c]

Hi,

I m suleman khosa, i need your help in one matter.
i have one CNC machine in fanuc 18i system was installed. When I On that machine early in tthe morning then its gave alarm of system 970 NMI occured in PMC LSI. Manual said that replace the motherboard, please give me another solution to repair that unit or any other way of solving problem.

My email id is [email protected]

NMI of any sort is normally bad news. I have had before, its simply corrupt data. Try reloading the PMC and Data. If not new board i'm affraid.

[roshanlal]

hi sir i have same problem how you short it out all 4led and 2nd red lit

I HAVE THE SAME PROBLEM IN ONE LAHTE NAKAMURA-TOME-20II.
MY CONTROL IS FANUC 18TA.
I HAVE OTHER MANUALS AND PARAMETER OF THIS MACHINE.
INCLUDE SPECIAL PARAMETER.
IF SOMEBODY THIS INTERESTED IN THIS PARAMETER I CAN TO SHARE THIS INFORMATION.
THANK YOU FOR ANY INFORMATION THAT HELPS ME TO LEAVE TO THIS PROBLEM.

THANK YOU

ROMMEL ROJAS

[muhammad@arif]

hi sir i have same problem how you short it out all 4led and 2nd red lit

hi

[cncsolutios]

Dear Sir,
If possible kindly send the parameter for the same machine.
thanks and regards,
Devender Sharma
[email protected]
[email protected]

[cncsolutios]

I HAVE THE SAME PROBLEM IN ONE LAHTE NAKAMURA-TOME-20II.
MY CONTROL IS FANUC 18TA.
I HAVE OTHER MANUALS AND PARAMETER OF THIS MACHINE.
INCLUDE SPECIAL PARAMETER.
IF SOMEBODY THIS INTERESTED IN THIS PARAMETER I CAN TO SHARE THIS INFORMATION.
THANK YOU FOR ANY INFORMATION THAT HELPS ME TO LEAVE TO THIS PROBLEM.

THANK YOU

ROMMEL ROJAS

Dear Sir,
we have same machine,but do not have any manuals and parameter.So kindly send the all parameter list.
your immediate response will be highly appreciated.
Thanks and regards,
Devender Sharma
[email protected]
[email protected]

[famwhaiyun]

I HAVE THE SAME PROBLEM IN ONE LAHTE NAKAMURA-TOME-20II.
MY CONTROL IS FANUC 18TA.
I HAVE OTHER MANUALS AND PARAMETER OF THIS MACHINE.
INCLUDE SPECIAL PARAMETER.
IF SOMEBODY THIS INTERESTED IN THIS PARAMETER I CAN TO SHARE THIS INFORMATION.
THANK YOU FOR ANY INFORMATION THAT HELPS ME TO LEAVE TO THIS PROBLEM.

THANK YOU

ROMMEL ROJAS

Hi Rommel,

I have exactly the same machine with you, tmc 20 II. Would you mind share the parameters and the ladder diagram?

Thanks. You can email me.

Rgds,
Fam

[email protected]

[Richyperu77]

I HAVE THE SAME PROBLEM IN ONE LAHTE NAKAMURA-TOME-20II.
MY CONTROL IS FANUC 18TA.
I HAVE OTHER MANUALS AND PARAMETER OF THIS MACHINE.
INCLUDE SPECIAL PARAMETER.
IF SOMEBODY THIS INTERESTED IN THIS PARAMETER I CAN TO SHARE THIS INFORMATION.
THANK YOU FOR ANY INFORMATION THAT HELPS ME TO LEAVE TO THIS PROBLEM.

THANK YOU

ROMMEL ROJAS

Querido Rommel

Tengo el mismo problema en un torno. Me dicen que la tarjeta MAIN esta dañada. Pero quiero saber si resolviste el problema con tu maquina y como fue la solucion?? Me puedes ayudar??

[Fonzi]

I have a 18t lathe.
When I try to power on the controller I get 4 green lights and 1 red light in the second spot.

Any ideas?

I have this exact problem, though with a A16B-2201-0080 board. I had an issue with the Power Supply, and replaced it. Then a couple days later received this error and CRT will not power on. Prior to all this I was receiving a servo amp error #4/DCSW.

I need this machine up and running ASAP. Any solutions ?

[roshanlal]

I have a 18t lathe.
When I try to power on the controller I get 4 green lights and 1 red light in the second spot.

Any ideas?

Dear sir
i have same problem in fanuc 18TA,
pls help me how you shorted it out
[email protected]

[Fonzi]

I know this is extremely old... but what did you ever come up with. I am having the same issue. Thanks.

[Nperez40]

Greetings.
I am repairing a machine with Fanuc 18MA control, I feel that I am very close to solving all these problems that this machine has, but at this moment I am struggling with my A16B-2201-0080 card, when I try to turn on the machine three light up red bulbs as in the picture, unfortunately I don't have the manual.
Can somebody help me. with documentation or tell me where the problem is?