We have version 5 of the vend software in the machine. Manual says for version 4 the following information is stored by the controller (presumably in the NVRAM): Machine Serial Number Blank to 9999999 Machine ID Number Blank to 9999999 Audit Number - # of times MIS has been performed SALES (resettable) 0 - 1,999,999.95 SALES (unresettable) 0 - 1,999,999.95 BAGTOTAL (cash box + bill) 0 - 1,999,999.95 cash box 0 - 1,999,999.95 card sales 0 - 1,999,999.95 bills in stacker bill total 0 - 1,999,999.00 ones 0 - 65535 twos 0 - 131070 fives 0 - 327675 tens 0 - 655350 twenties 0 - 999980 coins in tubes tube total 0 - 357 $1 0 - 255 .25 0 - 63.75 .10 0 - 25.50 .5 0 - 12.75 win snack vends 0 - 999,999.95 shopper vends 0 - 999,999.95 promo vends 0 - 999,999.95 # VENDS PER PRODUCT One page 2 of the main circuit board description there is a comment about a test harness and a self test mode???