Nortel NTAB2666 greenlights keep flashing and is that normal?

Flashing super select 4wd lights most often occur when the front differential automatic disconnect is not engaging /dis-engaging when you select/deselect 4x4 drive. Causes are:

- front differential sensor switch is damaged or faulty
- actuator rod/shaft jammed / seized (perhaps sand/mud/dirt)
- vacuum lines leak/popped off fittings
- vacuum solenoid valves (2no.) either maybe faulty
- electrical wiring connection issue (ecu/solenoids/switch)
- combination of the above

There is a call back feature in the system. Sometimes when you receive an internal call from another extension and you are on another call the caller will hit callback. You actually have to return the call to that extension to stop the light from flashing.

You have unheard messages on the voicemail system provided by your telephone company. This system records messages when someone calls while you're already on the phone. Please contact your telephone company for instructions on accessing their voicemail system.

NorStar (NTAB2666) Audio Conference - this is a conference unit.

You issues is with voice mail though.
Call a tech in since your system is down.

This is called the YLOD. It happens by the system overheating and the solder holding the cpu and gpu to the motherboard is loosened. The only way to fix this is to void the warranty and take the system apart and reflow the motherboard or send it back to Sony for $150.00.

cd-rom-shows no emmulation-how to repair-fix? tks in advance

Slide the Nortel Grey Bar above the Hold & Rls buttons to reveal the setup button.

1. Hit that button to show *Options List / # Setup list
2. Press * to go into options.
3. Use the arrow buttons or hit 3 to go into CLEAR MESSAGE WAITING
4. Then hit 3 again to clear the message waiting

This should resolve the blinking light.

Faulty cartridge. Yes, it happens. Specially if it is not an HP replacement. Try inserting the old one and see if it stops the light. If it works, get a refund on your new cartridge.
By the way, did you remove the tape from the contacts before installing?

should be 1020000