FKI Tech Info

Easy 120
Specs
Installation
Operation
Theory
Delay Settings
Wiring Service
Main Board Service
Front Panel Service
Power Service
Vending System Service
Door Service
Manual Drop Service
Parts

Easy 120V / 120A
Specs
Installation
Operation
Theory
Programming
Wiring Service
Main Board Service
Front Panel Service
Power Service
Vending System Service
Validated Drop Service
Manual Drop Service
Door Service
Parts

Smart Series
Common Rules
Audit
Manage Users
Open Door
Vending
Drops
Reports
Clock Setup
Door Setup
Vend Setup
Validator Setup
Location Setup
Troubleshooting
Keypad Replacement
Parts List

McGunn Easy 120V/120A - Power

Symptoms

If the unit has no power, the display will be off and there will be no response from the keypad.

External Power

The unit is powered by an external DC power supply (Part 15000346). Measure the output voltage to determine power supply operation up to the back of the safe (only +12 and +5 VDC and common are used). If the problem is external verify the outlet has power and replace the power supply if faulty. If the power supply output is good and everything is conencted properly, the problem is inside the safe.

Internal Power Routing

Internally power runs on multiple sets of wires from the rear of the safe through an armored cable to the door. Through the armored cable: black wires carry power common from Pin 1 of the jack to J26 (main board), the LCD module, and validators; blue wires carry +12 VDC from Pin 3 on the jack to J26 on the main board and both validators; red wires carry +5 VDC from Pin 5 of the jack to the LCD module and main board J26. The armored cable also carries the printer cable harness.

Possible Causes of Internal Power Problems

Possible problems include the cable harness, the LCD display module, validators, or the main board.

Troubleshooting Internal Power Problems

Disconnect J26 and the molex connectors to the LCD panel and validators. Check for correct voltages at each plug (blue = +12 VDC and red = +5 VDC relative to black). If power at each plug checks out okay, the armored cable is okay and the problem is either the LCD module, validators, or the main board. Plug J26 in and see if the Heartbeat LED on the main board blinks. If not, the problem is definitely the main board. If the Heartbeat indicator does blink, plug in the LCD module. If the display comes on, the power problem is probably a validator. If the display does not come on, the problem is likely to be the LCD module although it is possible the problem could still be on the main board.

Internal Connections

Back wall, near top, hinge side: