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CM Veeder-Root recommends conducting the following procedure prior to any Annual Certification or Operability test. <br />This procedure will help assist in identifying the operational status of the backup battery before removing power to <br />the ATG system. During this procedure the TLS power should remain on at all times unless specified. <br />1. Print out the System Setup. <br />2. Perform the "Archiving the System Setup" on page 4. <br />3. Again print out System Setup and verify that the Archived Setup matches the setup printed in Step 1. <br />M 4. For easier access to the ECPU and Battery, you may want to remove the printer door group. <br />5. Carefully remove printer ribbon cable between the printer and ECPU. Do NOT shut the Battery Switch off <br />(Down Position). <br />6. Using a Volt Meter, verify battery voltage for the applicable console by putting the positive lead on Resistor <br />151 shown in Figure 10) and the negative lead on any exposed metal of the console's chassis. Use the battery <br />test pads for voltage measurement, if available. <br />NOTE: TLS -350/350R ECPU boards manufactured after January 19th 2011 have Battery Test points located <br />below the dip switch area. The figure below shows the location of both the battery test pads and R151. <br />Figure 10. Battery voltage test locations on ECPU board <br />7. Does the volt meter read 3.4 to 3.6 Vdc? If Yes, Do not remove Battery. Battery is not defective do not remove <br />it, go to Step 14. If No, go to Step 8. <br />8. Using an insulated screw driver, push down and pull away on the battery cover that is attached to the ECPU <br />board. You may want to use your finger tips to help remove the battery cover. Please be careful you don't <br />touch any other circuits on the board (see Figure 11, A). After the top of the battery cover has dislodged, you <br />can pull the cover off with you finger tips (see Figure 11, B). <br />17 <br />