Problem A: The flow meter on top of the MEG dewar has abnormal Helium flow.

Solution A: Call reception, who will call a member of staff. They will remove, and then replace the lid on the MEG helium dewar. This should correct the flow.

Problem A: There is an excess of pressure in one of the Helium storage dewars.

Solution A: As part of the normal pressure control systems of the helium storage dewars, every now and again the dewars vent some helium gas. So long as there is only the sound of gas being released, and no vapour cloud, this is not a problem.

However, if you see a vapour cloud associated with venting from any of the valves on the dewars, leave MEG immediately and go to reception. Reception will contact a member of staff who will vent the Helium storage dewar. This will release the pressure, and the hissing should cease.

Problem A: The oxygen level in the MSR has dropped to a dangerously low level.

Solution A: Leave MEG immediately, and go to reception. Reception will call a member of staff. They will silence the oxygen monitor, and investigate the problem.

Problem A: The pneumatics on the MSR have failed.

Solution A: Should the door to the MSR not open when you press the red open button, and the only means of opening the MSR door is with the emergency key, call reception. They will call a member of staff who will reset the door pneumatics on the Pressurised Air Distributor.

Problem A: The bed has not been correctly locked down last time it was moved.

Solution A: Refer to the documentation in Chapter 4 (MSR - Magnetically Shielded Room), and move the chair back on to the rails.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

There are two potential things to check if the trigger line is not visible:

Problem A: The parallel port values are not set correctly.

Solution A: You need to run the “Parallel Port Reset” program which is on the Stimulus PC Desktop. To run this program, refer to (see Section 5.3, in Chapter 5 Stimulus Delivery and Response Equipment).

Problem B: No / an Inappropriate “Real Time Display” has been selected on the 4D Magnetic Source Imaging software.

Solution B: In the “Acquisition Setup” window, click on “Utilities” and then “Real-Time Display Control”. Choose “SenTest” from the “Choose Exisiting Setup” menu.

If these solutions do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: There is no cable for triggers attached to the DAS.

Solution A: The typical stimulus setup uses the auditory trigger line.

Problem B: If the MOTU sound card has errored, this may cause the trigger line for the parallel port to error.

Solution B: Try to disconnect and then reconnect the BNC cable labelled “auditory trigger / trigger input 1” (it has two stripes of yellow tape on it), to Channel 1 in the “Trigger Inputs” qandaentry of the DAS.

If these solutions do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The stimulus presentation software is not sending group codes.

Solution A: Group codes are sent by the stimulus presentation software. If you are not getting any Group codes when you run the stimulus presentation software, then you need to check that you are running the version of the stimulus presentation script that was agreed as the final version at the Protocol Feasibility scan. If for whatever reason the experimenter has changed their stimulus presentation script, then they need to make the suitable modifications to the script to see their Group codes.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: There may be a problem with the amplifier.

Solution A: Firstly, check that there is power supply to the amplifier; there will be a red LED on the power button if there is power to the amplifier.

Problem B: There may be a problem with the Motu Sound Card.

Solution B: Firstly, check that there is power supply to the sound card. There will be two orange LED's lit on the DIGITAL I/O panel if there is power.

If none of these solutions work, please contact reception, who will contact a member of YNiC staff.

Problem A: There is no cable for auditory triggers attached to the DAS.

Solution A: Find the BNC cable labelled “auditory trigger / trigger input 1” (it has two stripes of yellow tape on it), and connect it to Channel 1 in the “Trigger Inputs” qandaentry of the DAS.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: There is a problem with the projector.

Solution A: Check there is power to the projector. When you press the power button on the projector, the orange standby button should be on.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The projector cannot find an input from which to dislay images.

Solution A: Press the “source” button on the projectors remote control.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The projector is over-heating.

Solution A: The fan behind the projector should always be on when the projector is running. If the fan is not on, turn it on. If the fan is already on, contact reception, who will contact a member of YNiC staff.

Problem A: The projector settings have not been reverted after a scan that has used a non-standard display setting.

Solution A: Refer to (see Section 5.1.2, in Chapter 5 Stimulus Delivery and Response Equipment). This qandaentry will tell you how to flip and or invert the image using the projectors remote control.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The projector is projecting from a disply that is not the one on the Stimulus PC.

Solution A: A previous study has used stimulus presentation software that is not on the Stimulus PC, and have modified the wiring in the backroom. This will probably have been the CRS system (check if the display on the monitor to the left of the Simulus PC monitor is being projected). The wiring in the backroom will have to be reverted to the default stimulus setup. This should be done by a member of staff. Please contact reception, who will contact a member of YNiC staff.

Problem A: When you go to use megmap, the MEG acquisition machine, it is turned off.

Solution A: The megmap computer needs to be turned on by a member of YNiC staff. Please contact reception, who will contact a member of YNiC staff.

Problem A: When you go to use the Stimulus PC, it is turned off.

Solution A: Go into the backroom and turn the Stimulus PC. Log on as “Stim User.”

Problem A: The bar into which the head rest slots has not been appropriately tightened.

Solution A: Ask the participant to lean forward. Remove the transmitter, and manually tighten the bar, by turning it away from the dewar. Replace the transmitter, and then proceed with the digitisation.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The Fastrak digitisation unit is not turned on when you are starting the digitisation process.

Solution A: This error message typically occurs when you click the “Start” button in the Digitize Head Shape window. To solve this, do the following steps.

If these solutions do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The origin of this problem is unkonown, other than it relates to there being a Low Fastrak signal ...

Solution A: This error message typically occurs when you click the “Start” button in the Digitize Head Shape window. Unfortunately, there is no known solution to this error. It has only occured very rarely. The only suggested solution is that you attempt a soft DAS reset.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The data has not been saved at the end of the digitisation.

Solution A: This error message typically occurs when you have finished digitisation. Unfortunately, the only solution is to repeat the digitisation process.

If this solution do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The origin of this problem is unkonown, other than it relates to the Fastrak not being able to be powered on ...

Solution A: This error message typically occurs when you click the “Start” button in the Digitize Head Shape window. Unfortunately, there is no known solution to this error. It has only occured very rarely. The only suggested solution is that you attempt a soft DAS reset.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The RCS cage has not been pushed back into the correct position before data acquisition.

Solution A: To deal with this problem you will first have to abort your acquisition.

If this solutions does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: Two coils are incorrectly placed on the participants head (i.e. the left coil might be on on the participants right e.t.c.).

Solution A: First, identify from the screen which two coils are in the wrong place.

Problem B: One of the coils is faulty.

Solution B: You will have to replace the faulty coil. An indication that there is a faulty coil is that 1, 3 or all of the coils have a large error on them.

If these solutions do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The transform between digitisation and head coil acquisition has failed. The origin of this problem is unknown.

Solution A: This problem is solved by doing a soft DAS reset. Following the soft DAS reset, proceed with the acquisition as normal.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The transform between digitisation and head coil acquisition has failed. The origin of this problem is unknown.

Solution A: There has only been one instance of this error. The problem was solved by re-digitising the participant.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: There is no Real Time Display associated the scan.

Solution A: You can deal with this problem without aborting your acquisition.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The RCS cage has not been pushed back into the correct position before data acquisition.

Solution A: To deal with this problem you will first have to abort your acquisition.

Problem B: The correct weights, or no weights, have been associated with the scan. There is an error in your scan template.

Solution B: To deal with this problem you will first have to abort your acquisition.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

There are two potential things to try if the sensor traces are flat:

Problem A: Unknown: Sometimes this error occurs without any known cause.

Solution A: To deal with this problem you will first have to abort your acquisition.

Problem B: The scan you are recording is not expecting internal triggers, however, an internal trigger line is attached to the User Interface Panel of the DAS.

Solution B: To deal with this problem you will first have to abort your acquisition.

If these solutions do not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The DAS errors when you stop an acquisition from the Acquisition in Progress window.

Solution A: Click “OK”, and your coil positions should be saved. If you have a second run:

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: The DAS communication fails when you select for a scan to be Sent as Idle Parameters or to Start Initialization.

Solution A: This is a common error. Try to Send as Idle parameters a few times (at least three times). However, if this doesn't work, the only solution is a soft DAS reset. Subsequently, start acquisition as normal.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: Cancelling a previous process has caused a temporary communication failure with the DAS. You will temporarily be unable to Start Initialization, or Send as Idle Parameters.

Solution A: Dismiss the error message by clicking “OK”, and wait a couple of minutes before trying to acquire again.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: A fatal software error occurs during your acquisition.

Solution A: You will have to perform a soft DAS reset.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: A fatal hardware error occurs during your acquisition.

Solution A: You will have to perform a soft DAS reset.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: A fatal hardware error occurs during your acquisition.

Solution A: You will have to perform a soft DAS reset.

If this solution does not work, please contact reception, who will contact a member of YNiC staff.

Problem A: A fatal hardware error occurs during your acquisition. Most likely it is an error on the DY4 board in the DAS rack.

Solution A: Try a soft DAS reset, although this may well not solve the problem.

Problem A: A fatal hardware error occurs during your acquisition.

Solution A: Try a soft DAS reset, although this may well not solve the problem.

Problem A: You have been viewing data in the Data Editor window prior to trying to transfer it nihead002.

Solution A: There is a chance that you may be able to ignore this error and the data will transfer. However, if you it doesn't work, you will have to restart the Magnetic Source Imaging software. This can be done in the following manner:

If this solutions does not work, please contact reception, who will contact a member of YNiC staff.