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i-----Circuit Board Types - ECPUI/ECPU2 - Battery Replacement .® Veeder-Root recommends conducting the following procedure prior to any Annual Certification or Operability test. This procedure will help assist in identifying the operational status of the backup battery before removing power to the ATG system. During this procedure the TLS power should remain on at all times unless specified. 1. Print out the System Setup. 2. Perform the "Archiving the System Setup" on page 4. 3. Again print out System Setup and verify that the Archived Setup matches the setup printed in Step 1. 4. For easier access to the ECPU and Battery,you may want to remove the printer door group. 5. Carefully remove printer ribbon cable between the printer and ECPU. Do NOT shut the Battery Switch off (Down Position). 6. Using a Volt Meter,verify battery voltage for the applicable console by putting the positive lead on Resistor 151 shown in Figure 10) and the negative lead on any exposed metal of the console's chassis.Use the battery test pads for voltage measurement, if available. NOTE:TLS-350/35OR ECPU boards manufactured after January 19th 2011 have Battery Test points located below the dip switch area.The figure below shows the location of both the battery test pads and R151. R 151 7-310 r ©Ili�i�l z Battery test pads I ` E _ s Figure 10. Battery voltage test locations on ECPU board 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 it, go to Step 14. If No,go to Step 8. 8. Using an insulated screw driver, push down and pull away on the battery cover that is attached to the ECPU board. You may want to use your finger tips to help remove the battery cover. Please be careful you don't touch any other circuits on the board (see Figure 11, A). After the top of the battery cover has dislodged,you can pull the cover off with you finger tips(see Figure 11, B). 17