Here are the diagrams and repair parts for Official AT&T 4000A telephone equipment, as well as links to manuals and error code tables, if available.
There are a couple of ways to find the part or diagram you need:
Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.
We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.
For DIY troubleshooting advice and repair guides, visit our repair help section.
#NI
All parts diagram
Part #MPE16
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Part #16R
The manufacturer no longer makes this part, and there's no substitute part
#NI
All parts diagram
Part #E
The manufacturer no longer makes this part, and there's no substitute part
Choose a symptom to see related treadmill repairs.
Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…
Main causes: rear roller out of alignment, damaged walking belt, bad roller…
Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…
Main causes: faulty sensors, wiring failure, bad control console…
Main causes: bad control console, wiring failure, bad motor control board…
Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…
Main causes: damaged walking belt, improper belt tension, bad roller bearing…
These step-by-step repair guides will help you safely fix what’s broken on your treadmill.
Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…
A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…
A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…
Office and smart products articles | Sears PartsDirect
Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Learn what the Amazon Fire Stick Lite video streaming device does.…