LG RP1329AD1S Owner's Manual page 17

Card / Coin type
Algorithm Flow Chart shows how to control programming mode.
Before program set, check the structure of programming mode.
3. Press Med Temp.(+) or Low Temp.(-) button if you want to be at the same level.
is to set price value, time value and vend type etc.
consists of line test, reset, free cycle and kill cycle.
Is to collect the usage data.
Structure of Programming mode
NOTE
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PROGRAMMING MODE
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