Many of our Modular Series (MC) change machines are sold without the optional Expanded Function (EF) Module. The EF Module has a LCD display that provides detailed Audit reports, Programming options, along with Diagnostics and Error History reports.
Without the optional EF Module, Modular series change machine owners must rely on the Out of Service Light, Bill Acceptor Entry LED (if applicable) and the Status, Power, and Interrupter LED’s on the dispenser boards.
The Out Of Service (or OOS) Lamp on the front of the machine will be ON steady if there is an error in the machine.
If the Bill Acceptor has entry lights around to the bill entry port, they should be on or flashing to indicate the machine is ready to accept money. No lights could indicate the Primary Device (which is usually the Primary Hopper) is disabling the bill acceptor.
The Status (Yellow), Power (Green), and Interrupter (Red) LED’s on the Dispenser Board provide the most feedback. These are the three lights just below the RED RESET Button on the right side of the Control Board. For Simple Function change machines (any machine that does not have an optional EF Module), the Status light will flash quickly, in a steady pattern when operating normally.
For machines with two or more dispensers, the Primary Device’s Status (Yellow) LED will flash noticeably faster then the Secondary Device(s) for easy identification. The Primary Device controls most of the system functions and programming options.
Whenever the machine encounters an error, the yellow Status light on the primary or failed device will flash a “pattern” or flash code. The flash code consists of a steady blinking light and then a pause, it will repeat the flashing code. The number of steady blink is the flash code number. Check the Modular Series Owner’s Manual (Section 6) for a list of flash codes, and follow the recommended instructions.
Other less known functions of the LED’s are great for troubleshooting different errors.
As an example, the yellow status light will stop flashing momentarily whenever a bill is accepted. This short pause will tell you if the bill acceptor is sending the vend signal to the dispenser board.
Another less known feature is how the Red (Interrupter or “Coin Out”) LED works. The Red LED is the Coin Interrupter LED, which means the RED light will flash on/off whenever a coin drops into the coin chute of the hopper. (Note: It also will flash whenever the hopper motor reverses due to a jam condition).
So if you insert a bill in the bill acceptor and the hopper doesn’t start, look to see if the Red LED flashes on/off (a few seconds after the bill was inserted). If it does flash, this means the hopper board is trying to tell the hopper to dispense. If it does not flash, there could be: (A) a dispenser jam, (B) a bad dispenser board, or (C) a problem with motor or gear mechanism.
As always, if you have any service related questions on any Standard Change-Makers products, please contact our Service Department by calling 1-800-968-6955 or email: firstname.lastname@example.org
Kris Kious, National Service Mgr., Standard Change-Makers