700 Series Diagnostic Mode

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Re: 700 Series Diagnostic Mode

Postby vic7767 » December 27th, 2016, 11:07 am

Asdewq wrote:That has been there since the 500 series:
Thanks for the URL to the 500 series Roomba BiTs. There is also the same procedure available for the 4XX, and 4XXX Roomba models.

https://www.youtube.com/watch?v=aO0eTk-7qlw&t=704s
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Re: 700 Series Diagnostic Mode

Postby Bikie81 » January 10th, 2017, 7:54 am

Hi there. My name is Andrew and i'm new to this forum.
I purchased a second hand 780 series, knowing that it has problems.
Sometimes does the error 9 fault and also doesn't sync with the base station.
I am technically minded and researched to see if their is a way to enter a diagnosis mode to check what sensor could be causing the error 9 fault. Mine has just the touch type sensor buttons so you can't press or see the buttons while the roomba is turned off.
Is there a different process to get these models into BiT mode? I don't have a cable to be able to connect it with my computer unfortunatly.
I have already pulled it apart and found that the dock ir sensor wires have been cut by the front bumper somehow, maybe as a result of being dropped, maybe this is why the error 9 is also present because of a dud sensor...
any help would be appreciated.
regards Andrew
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Re: 700 Series Diagnostic Mode

Postby vic7767 » January 10th, 2017, 11:11 am

Bikie81 wrote:Is there a different process to get these models into BiT mode?
You can press the Clean button once and then see the location of the other buttons that you need to press to enter the Built in Test mode. Once you memorize where the buttons are located then you perform the same procedure of button presses to enter BiTs mode.
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Re: 700 Series Diagnostic Mode

Postby Bikie81 » January 10th, 2017, 10:45 pm

Ok, I managed to get it into the BiT mode, but I only have two options that I can cycle through:-

0- Print Currents
1- Optical Debris Sensor test
and it then returns to "Off"

Is it possible that the error 9 problem I am getting could be a software problem rather than a component\electrical fault?
reason I ask is that the error nine fault seems to come and go... just before it was operating fine for approx 45 mins, then the error 9 happened and is stuck in this fault at the moment.
Could the broken wires on the ir dock have anything to do with a error 9 fault?
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Re: 700 Series Diagnostic Mode

Postby vic7767 » January 10th, 2017, 11:26 pm

Don't know what program you got into but that is not the BiTs MANUAL mode that you should be in.

Using your fingers place one on Clean and one on Dock and then when you tap Spot you should see an orange triangle light up each time you touch Spot. Touch Spot while holding a finger on Clean and Dock and continue lifting your finger off of Spot then back on Spot while watching the orange triangle flash. Touching the Spot button 6 times then releasing all buttons should place the Roomba into the MANUAL BiTs mode. You will know this because the Roomba will play a short tune of ascending and descending tones. When the tones stop you will be at test 0. Pressing the Spot button once will then advance you to test 1. Press it once more and you will be at test 2. That test is the bumper sensor test which is the err 9 test. Pressing the left side of the bumper should turn on the Dock LED and when you release the bumper the LED will go out. Pressing the right side of the bumper will light the Spot LED. What does your Roomba do during that test?
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Re: 700 Series Diagnostic Mode

Postby Bikie81 » January 11th, 2017, 12:11 am

Thanks Vic, I managed to get it into that mode and it looks like the right side bumper senor is stuck on (spot is lit constantly and I can get dock to flash by pressing the left side bumper).
Now i'll carry through and do the rest of the tests, (i'm watching the 500 series test on you tube at the moment)
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Re: 700 Series Diagnostic Mode

Postby Bikie81 » January 11th, 2017, 12:27 am

Sorrry to be a pain Vic, but do you have a list of the test's for the 780. Following the youtube video I get lost after the cliff sensor tests, mine goes on to check the rear cliff sensors, but not sure what the next tests are because they must be in a different order to the 500 series tests. (They also don't appear to be in the same order as the original post in this thread)
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Re: 700 Series Diagnostic Mode

Postby vic7767 » January 11th, 2017, 12:40 am

Go here: viewtopic.php?f=1&t=15192&p=99276#p99276

Scroll down to the 700 series subjects and look for the 700 BiTs info. You can then see what each test performs.
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Re: 700 Series Diagnostic Mode

Postby Bikie81 » January 11th, 2017, 12:55 am

Awesome, thanks for that.
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Re: 700 Series Diagnostic Mode

Postby SteveIves » January 21st, 2017, 10:13 am

Hi Everyone.

Firstly - thanks for posting the diagnostic mode info. Very useful and well done.

Secondly - My Roomba 760 no longer slows down when approaching an obstacle, but bumps into it at full speed. I'm assuming that it has a proximity sensor on the front that is no longer working. Any idea which of these diagnostics test it may be and how to perform the test?

My Roomba seems to work perfectly apart from this - it doesn't fall down the stairs, it stops when it encounters a lighthouse, it docks ok, it follows walls etc. Is there an IR emitter at the front which might have failed?

Also, the tests on page 1 of this thread seems to occur in a different order than on my Roomba.

Any help would be much appreciated.
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Re: 700 Series Diagnostic Mode

Postby a1robotrepair » January 21st, 2017, 1:47 pm

SteveIves wrote:Secondly - My Roomba 760 no longer slows down when approaching an obstacle, but bumps into it at full speed. I'm assuming that it has a proximity sensor on the front that is no longer working. Any idea which of these diagnostics test it may be and how to perform the test?

factory test 6,7&8 lt, lt left and right, lt front left and right, lt center left and right. 500 series service manual tests 5,6,7 are identical to 700 series tests 6,7,8.
Removing the front bumper and brushing dust away from inside bumper and IR sender, recievers will usually cure your problem.
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