Black Box AC2000A Especificaciones descargar pdf (Pagina 9)

Functional Description of the Series AC2000 Changer

To follow along with this walk-through of your changer, fill the

hoppers with coins and turn the changer on.

1. When power is applied the validator will cycle twice, the

out-of-service LED flashes then goes out, the green LED on

the main logic board comes on steady, and the decimal point

on the main logic board number display will flicker on once

per second in the standby mode.

2. During the power-up mode the main logic board relay clicks

twice enabling power (120vac) to the validator. When this

relay is not enabled it routes 12vdc ground to the out-of-

service LED. Without power to the validator the changer

cannot accept bills. Since we are not in the error mode, the

red LED on the validator logic board is on steady.

3. When a bill is inserted into the validator bill slot, the bill

will be pulled inside. The validator then compares what the

bill looks like to its memory. After the bill is validated it

grounds the 5vdc lines causing a pulse along the yellow and

blue validator harness wires to pins 5 and 15 of the main

logic board. Each pulse stands for the amount of the

denomination validated. (i.e. 1 pulse for $1, 5 pulses for $5).

4. The 5vdc pulse then travels from pins 5 and 15 to the

EPROM chip (ver. DBCG-1”) pin #25. The EPROM sends a

12vdc pulse to the meter chip (U5) out pins #21

5. & 22 (one pulse per denomination validated). The EPROM

also multiplies the bill pulse by the DipSwitch settings (The

EPROM reads the DipSwitch settings during the power up

mode and stores them into memory.)

6. The EPROM then sends the hopper pulses out pin #23 to

pins 6 and 7 of the red 12 pin hopper plugs. These pulses

travel through the purple and brown wires of the hoppers

wire harness to the hoppers pins 8 and 12.

7. The hopper turns itself on with the first hopper pulse. The

hoppers counts the hoppers pulses sent from the EPROM

chip on IN3 (pin 12) while dispensing the coins at the same

time. When the amount of hoppers pulses in equals the coins

dispensed through the coin counting optical sensor the

hopper turns itself off.

8. The Changer returns to the standby mode with the decimal

point flashing once per second until another bill is inserted.

Functional Descriptions of Out-of-Service Conditions

Out-of-Service conditions occur for the Series 2000 changer for

the following reasons; low coins, hopper fault error, validator

fault, or a blown fuse.

1. Blown Fuse: an AC power spike in line voltage or a bad

transformer on the main logic board can cause A blown fuse

on the main logic board. If either fuse blows the indication

is the green LED on the main logic board will not light.

A. Replace the fuse. If the green LED now lights then

there was a spike.

B. If it does not and the fuse blows again the power

transformer is shorted. To test the transformer use a

voltmeter set for ohms and measure across the primary

(40ohms) and the secondary (1.5ohms).

2. Hopper Fault: A hopper fault can either be a jammed

hopper, a blocked coin counting optic or a bad hopper logic

board.

A. Indications for a jammed hopper are the changer

accepts bills, the meter counts up, but nothing or not

enough coins are paid out.

1. After 2 minutes the EPROM shuts off the

validator if the coins are not paid out

correctly. The “Empty” LED will flash once

per second.

2. At this point the three options open are to

attempt repair on your own, call your

distributor, or return the defective hopper to

American Changer.

B. Indications for a blocked coin optic or bad hopper

logic board are the out-of-service LED on the

outside of the changer is lit and the red LED on

the main logic board is lit and flickers off once

per second.

1. If two of the 3 green LED’s on hopper logic

board are lit then the hopper logic board is

bad.

2. If there is a coin or foreign object caught in

the coin exit window LED’s #1 and #3 will

be lit on the hopper logic board instead of

LED’s #1 and #2.

a. Take off the side of the hopper with

the 5 Philips screws. Pull up on the

exit window logic board and look for

the jammed item.

b. Ensure you have the pins aligned

before reconnecting logic board.

3. Validator Fault: When a validator fault occurs the

validator’s EPROM shuts down the validator and flashes

an error code via the red LED on the validator logic

board. When there is no error this LED is on steady. The

validator only gives bill pulses to the main logic board

so the main board never knows if the validator isn’t

functioning. Therefore the out-of-service-LED will not

light. (Seepage 10 for validator error codes.)

4. Low Coins: The low coin condition is probably the

most common fault. The EPROM on the main logic

board is constantly checking for low coins in the

hoppers. This is done with a low current 5vdc signal on

pin #3 of the hopper’s output connector. The voltage

then travels down the hopper’s wire harness on the

white wire to pin #7 of hopper’s plug. The signal is

applied to one of the gold low contact plates at the

bottom of the hoppers. The 5v travels through the coins

through the other contact gold plate to hopper’s pin #2.

It then goes through the black wire in the hopper’s

harness to pin #10 on the main logic board. Any

interruption of more than 1/2 a second will cause an out-

of-service condition.

A. Clean the bottom gold plates of the hoppers with

steel wool or fine sandpaper. Refill the hoppers

and try again.

B. Check continuity, (0 ohms) resistance, from pins 3

(white) and 10 (black) of the red hopper harnesses.

Make sure both hoppers are full and the changer is

turned off.

1. If the continuity is 0 ohms, replace the main

logic board.

C. Pull the hoppers out of the changer, then look at

the 12 pin black male connector that sticks out of

the hoppers. Place the continuity checker’s leads

on pins 2 & 7.

1. If the continuity is 0 ohms, replace that

hopper’s plate or adjust the hopper’s plate

female socket’s pins so that they are not so

spread out.

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