no signal error
The issue you are having is with the BE board and RM board. These boards are the main computer of the system and are failing to start. You will want to repalce both parts.
For serial # less then 307998 use 10131804 and 10349420
For serial # greater then 307999 use 10349464 and 10349439
Technical Support Specialist
It could be power supply issue. Verify AC / DC Power Supply LEDs located on the back of the system. If DCDC power supply is bad then DC LEDs is solid amber (yellow orange) the system might have over current or over voltage or over temp. Same as the AC LEDs.
I am having the same mistake. ''self-diagnosis, check signal cable '' There is no problem for DC / DC power and AC / DC power. "Self-diagnostic control cable no signal" gives this error. Can your Help Please.