Model #CMT-T1 Sony tabletop systems

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Question and Answers

Q:

my safety featute intrared sensor is not making light come on, tried lining it up, no help thre,door will not operate. can sensor be disconnected?

A:

That safety sensor system cannot be disconnected. You could have a problem with the wiring or a bad sensor. Here is a link for the owner's manual: Owner's Manual . That manual has troubleshooting and connection information for the safety sensor system. You can test the sensors. Use some short runs of good wiring to connect those sensors directly at the motor unit. Hold those sensors an inch apart and see if they work properly. If not, then you either have a bad sensor or a problem with the logic control board in the motor unit of the garage door opener. If the sensors work properly during this test then you have a wiring failure between the sensors and the motor unit when they are positioned in the normal location at the bottom of the door tracks. Properly install those sensors back on the door tracks after completing this brief test.

This information may help you resolve the problem that you are having with those sensors. If you need parts, you can order them from this page: Craftsman Garage Door Opener 139.5397 . . . SRT Parts .

If you need more assistance, reply with additional details and we will help you further.

If you get to the point where you need to have a service technician diagnose and repair this failure, you can schedule service through this link: Sears Home Services .

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Lyle W -
Sears Technician
May 11, 2012
Q:

One of my garage door sensors is broken. Is there a way to bypass these?

A:

Congratulations on trying all the correct possibilities to by-pass the door sensors.

The programming in the logic board of your garage door opener is such that it is impossible to bypass the sensors.

You can force the door to open or close by holding the wall switch in.

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Jimmy K -
Sears Technician
May 19, 2008
Q:

How to wire the

A:

The COM0 and COM1 connections on the new control board equate to the C and COM0 connections on the old control board. Those the black L1 wire will connect to the COM0 and the COM1 connections on the new control board. Since they have a common L1 connection that is piggybacked across the control board it does not really matter the order in which they are connected as long as the COM0 and the COM1 on the new board both have the black L1 wire attached. I highlighted those connections and the other L1 black wire connections in the first image below. Hopefully, that will help you connect those wires correctly.

That control board kit should have come with the instructions that are shown in the next 4 images. Those instructions cover several different models so you do not have to use all of those instructions. You may need to review the instructions that apply to your model.

I hope that this information helps. If you need more assistance, reply with additional details.

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Lyle W -
Sears Technician
September 05, 2012
A:

Here are the additional 2 pages of the instructions for that control board replacement.

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Lyle W -
Sears Technician
September 05, 2012
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