3 Other operating modes of the G-18.mft - NRI

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MAINTENANCE AND SERVICE G-18.mft with vending machine control system Testing escrow, selection buttons, product ejectors, motorized return mechanism manually If there is a malfunction in the vending machine components to be controlled, you can use the lower DIL switch on the additional control PCB and perform the respective function to determine whether the individual contacts are still intact: 1 If necessary, unhook the coin validator and set the eighth DIL switch of the upper switching block on the rear of the device upward to ON (only if the operating elements on the additional control PCB are disabled). 2 Hang the coin validator back in the machine. 3 Insert a coin into the coin validator. The device is now in the wake-up mode. 4 Use a pointed object to set the lower DIL switch 1on the additional control PCB (see Fig. 5) leftward to ON. The flashing green and red LEDs indicate that the coin validator is no longer in the operating mode. 5 Perform the function of the supposedly defective component (e.g. press selection button or return button). If the electrical contacts are still intact, you will hear an acoustic signal. 6 Set the lower DIL switch 1 rightward again (to OFF). The LEDs stop flashing. The coin validator is in operating mode again. 7 If necessary, unhook the coin validator again and set the eighth DIL switch of the upper switching block S1 downward again (to OFF) and hang the coin validator back in the vending machine. (Only if the operating elements on the additional control PCB are to be disabled) Fig. 5: Button and switches on the additional control PCB 8 If necessary, repair or replace the component. 12 42 National Rejectors, Inc. GmbH, Buxtehude 3
G-18.mft with vending machine control system MAINTENANCE AND SERVICE Status and error messages of the pilot lights in the machine door LED green LED is flashing red LED is flashing green and red LED are flashing The two pilot lights (LEDs) in the vending machine door that are controlled via the additional PCB are supposed to make it easier for the customer to operate the vending machine in normal operation. However, these LEDs also tell the service technician that there is a malfunction and what kind of malfunction it is. Accordingly, the green LED is used during a correct selling sequence and the red LED in the event of a malfunction or an error during the selling sequence: Meaning Credit sufficient for purchase Upon coin insertion (coin acceptance inhibited) • Credit has reached the highest price • All chutes are empty/defective • Malfunction in the escrow/ motorized return mechanism Upon pressing the selection button • Credit not sufficient for purchase • Chute is empty/defective Coin validator is in the service mode and not in the operating mode National Rejectors, Inc. GmbH, Buxtehude Troubleshooting No error, press selection button or insert additional coins for more expensive product • No error, do not insert any more coins and press selection button • Fill the chutes or reset the error by activating the automatic test run (see Chap. 6 "Starting up") • Reset the error by activating the automatic test run (see Chap. 6 "Starting up") • No error, insert additional coins (with "exact price", until credit = price; with "overpay", until credit ≥ price) and press selection button • Fill the chute or reset the error by activating the automatic test run (see Chap. 6 "Starting up") No error, set DIL switch on additional control PCB back again (to OFF) 43
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3 Other operating modes of the G-18.mft - NRI

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