Beginner guide to Coin Mech Wiring

[Flinnster]

That 6 way connector you linked to looks more like a CD audio connector in size. The credit board pins are pretty large. But yes because most of the pins are totally unused, you can go far smaller.
I re-used one from a Naomi cabinet, it's about 8 pins long, still works a treat.
I may even have a spare, somewhere.

 

[K1ngarth3r]

It's okay, I have the same size here already for another cab project (Mad Dog McCree) and tested it on the connector so know it fits

I've ordered a pack of 5 6 ways for £3 bargain

 

[Flinnster]

Hehe.. bargain indeed. Looks like you'll have it running pretty quickly

Get your control panel pot of 10p's at the ready!
Flinnster2017-09-22 21:31:24

 

[K1ngarth3r]

Should be, I've got to strip the entire coin door and respray it over the weekend.

I also need another Coin Mech (C120) and a couple of coin entry buttons (one that's on this coin door is a dummy and want the paper insert matching).

 

[K1ngarth3r]

So I took some picture of the back of the connectors.

9 Pin AMP

1. Blue =

2. Green =

3. Green =

4. Blank

5. Blank

6. Blank

7. Black = Coin Counter

8. Orange =

9. Yellow = 12v

3 Pin AMP

1. Yellow = 12v

2. Black =

3. Pink / White = Pulse 1 Credit

Spade Connector

1.

Credit Board

1. SW1

2. SW2

3. 0V

4. 0/P2

5. LAMP

6. 12V

7. MET

8.12V

9. 0/P1

10.0V

11.KEY

12. 12V

Lamps

Both lamps have two connectors for a small spade connection.

K1ngarth3r2017-09-26 13:38:33

 

[K1ngarth3r]

These are the mappings I need, I've added what I think they should be based on the machine owners manual but will need to track these cables back to the JAMMA harness and Power Supply to be sure they're wired up as per the manual.

K1ngarth3r2017-09-26 15:19:07

 

[K1ngarth3r]

It appears that all the cables have been replaced with different colours from the JAMMA harness > Power Supply > Connectors for the most part.

I'm tempted to re-wire everything in the correct colour as per the manual.

Here's what the manual said the wiring should look like (bearing in mind this is for the US cabinet and not the Atari Ireland cab which I have).

Manual for Pit-Fighter

Actual Wiring

Manual Sorted A/Z

JAMMA

COLOUR

ROLE

JAMMA

COLOUR

ROLE

COMMENT

JAMMA

COLOUR

ROLE

COMMENT

10

BN

SPKR+

1

Purple

Gnd

Need to check power supply hook ups

1

BN

+5V RTN

Power Supply

L

W

SPKR-

2

Purple

Gnd

Need to check power supply hook ups

2

BN

RTN

Power Supply

17

W/BK

SPARE

3

Red

+5 volts

Need to check power supply hook ups

3

R

+5V

Power Supply

18

W/BN

UP 1

4

Blue

+5 volts

Need to check power supply hook ups

4

R/W

+5V

Power Supply

19

W/R

DOWN 1

5

Orange

- 5 volts

Need to check power supply hook ups

5

OR

-5V

Power Supply

20

W/OR

LEFT 1

6

Yellow

+12 volts

Need to check power supply hook ups

6

Y

+12 volts

Power Supply

21

W/Y

RIGHT 1

7

Key

22

W/GN

PUNCH 1

8

White / Blue

Count 1

23

W/BU

KICK 1

9

Lock 1

24

W/V

JUMP 1

10

Grey

Spkr +

10

BN

SPKR+

25

W/GY

SPARE

11

Opt.

28

V

SPARE

12

Red

Vid-red

12

R

RED

D

R/W

+5V

13

Blue

Vid-blu

13

BU

BLUE

27

BK/W

SW GND

14

Black

Vid-gnd

14

BK

VIDEO RTN

U

Y/BK

SPARE

15

Test Sw

V

Y/BN

UP 2

16

Yellow

Coin-1

16

BK/Y

COIN 1

W

Y/R

DOWN 2

17

White / Black

Start 1

17

W/BK

SPARE

X

Y/OR

LEFT 2

18

White / Brown

1P UP

18

W/BN

UP 1

Y

Y/W

RIGHT 2

19

White / Red

1P Down

19

W/R

DOWN 1

Z

Y/GN

PUNCH 2

20

White / Orange

1P Left

20

W/OR

LEFT 1

a

Y/BU

KICK 2

21

White / Yellow

1P Right

21

W/Y

RIGHT 1

b

Y/V

JUMP 2

22

White

1P Butn 1

22

W/GN

PUNCH 1

c

Y/GY

SPARE

23

White

1P Butn 2

23

W/BU

KICK 1

d

GY/W

SPARE

24

White

1P Butn 3

24

W/V

JUMP 1

e

BK/W

SW GND

25

White

Opt.

25

W/GY

SPARE

P

BN

COMP SYNC

26

Purple

Opt.

14

BK

VIDEO RTN

27

Gnd

27

BK/W

SW GND

13

BU

BLUE

28

Green

Gnd

28

V

SPARE

N

GN

GREEN

28

BK/W

SW GND

12

R

RED

A

Gnd

A

BN

+5V RTN

Power Supply

B

BU/W

COIN CNTR 1

B

Gnd

B

BU/W

COIN CNTR 1

f

BK/W

SW GND

B

BN

+12V RTN

Power Supply

T

BK/OR

COIN 2

C

Red

+5 volts

C

R

+5V

Power Supply

16

BK/Y

COIN 1

D

Red / White

+5 volts

D

R/W

+5V

28

BK/W

SW GND

E

Orange

-5 volts

E

OR

-5V

Power Supply

4

R/W

+5V

F

Yellow

+12 volts

F

Y

+12 volts

Power Supply

6

Y

+12 volts

H

Key

F

Y

+12 volts

J

White / Purple

Count 2

3

R

+5V

K

Lock 2

C

R

+5V

L

White

Spkr -

L

W

SPKR-

A

BN

+5V RTN

M

Opt.

1

BN

+5V RTN

N

Green

Vid-grn

N

GN

GREEN

B

BN

+12V RTN

P

Grey

Vid-Sync

P

BN

COMP SYNC

2

BN

RTN

R

Svc Sw

5

OR

-5V

S

Spare

E

OR

-5V

T

Orange

Coin-2

T

BK/OR

COIN 2

U

Yellow / Black

Start 2

U

Y/BK

SPARE

V

Yellow / Brown

2P Up

V

Y/BN

UP 2

W

Yellow

2P Down

W

Y/R

DOWN 2

X

Yellow / Orange

2P Left

X

Y/OR

LEFT 2

Y

Yellow / White

2P Right

Y

Y/W

RIGHT 2

Z

Yellow

2P Butn 1

Z

Y/GN

PUNCH 2

a

Yellow / Blue

2P Butn 2

a

Y/BU

KICK 2

b

Yellow

2P Butn 3

b

Y/V

JUMP 2

c

Yellow / Grey

Opt.

c

Y/GY

SPARE

d

Grey

Opt.

d

GY/W

SPARE

e

Gnd

e

BK/W

SW GND

f

Black

Gnd

f

BK/W

SW GND

The next step is to check which cables go to what on the power supply I guess.

K1ngarth3r2017-09-27 09:26:15

 

[Flinnster]

NIce work Did you fire it up yet?

 

[K1ngarth3r]

Not yet, I'm still in the process of determine what's weird up where.

At the moment it almost appears there's not enough connectors to go to the credit board (or minimum at least).

I tempted to rewire absolutely everything

but might settle for just following the cables and cable managing it a bit with some labelling to make it easier to service in the future.

 

[Flinnster]

Total rewire may be overkill yeah, but bare in mind that a prevous owner/operator may have hacked around in their own way, which is why things are not matching 100%.

For sure unless you are after 100% authenticity you can ignore coin meters and coin-lockout pins.

Personally (and as I have multiple cabs) I'd really stick to the modern standard of black wires for ground, red for +5, green for -5 if it's actually needed, and yellow for +12.
You really don't want to be connecting anything from that power stuff to the wrong place, ever.

 

[K1ngarth3r]

I'm going for 100% authenticity for all my cabs but as long as I can tidy up the existing cabling I'll leave it as it is.

Once I have worked out what goes where I might need help figuring out the connections to the credit board and out the credit board.

For the two lamps on the coin door I guess its 12V and GND but there is a pin for LAMP on the credit board which is kind of confusing.

 

[Flinnster]

Yep I don't think it matters what you do with the coin door bulbs actually. You could take the connection from the credit board, or just connect 12v + GND directly from your loom itself (this is what I've done).

I'm sure the reason for the credit board 'lamp' connection was so that the credit board could flash the coin light for various things. But I've not yet tried that myself.

 

[Zipper]

I think lamps flash when game is partially credited up. e.g. after putting 10p into a game set at 20p a credit.
I'm personally a big fan of the straightforward mechanical, 1 coin = 1 credit, mechs!

 

[K1ngarth3r]

The lamp feature sounds amazing - So would I hook that up to the 12V or the GND? Or does it need to be a compatible lamp holder?

The Coin mech needs +5v or +12v and GND?

I guess everything else to the credit board is just as per Label? to JAMMA / Power Supply, I guess the complications are when things aren't quite matching when it comes to the wording.

For example:

Credit Board

1. SW1

2. SW2

3. 0V

4. 0/P2

5. LAMP

6. 12V

7. MET

8.12V

9. 0/P1

10.0V

11.KEY

12. 12V

Would be good to have a summary of what each one of these do?

 

[Flinnster]

I would connect the bulb first to LAMP & GND, so 5 and 3 lets say. If it doesn't light up, then you know the LAMP pin is basically acting as a GND switch.

So then try connecting the bulb to LAMP & 12v (pins 5 and 6).

If you get exciting things happening, show us what it's doing and I'll try wiring up mine that way! (All set to 20p per credit, 50p for 3, and I have tubs of 10p coins on my CPs)

Your credit board pins, I have excel boards not klingon ones but I'd say something like this...

1. SW1 ---> possibly a coin lockout override for coin1?


2. SW2 ---> possibly a coin lockout override for coin2?

3. 0V ----> Ground for switches above?


4. 0/P2 -----> Coin 2 input, goes to pin T on jamma edge


5. LAMP ------> Coin bulb


6. 12V -------> 12V out to the bulb, possibly?


7. MET -----> Coin meter / mechanical counter


8.12V -------> Probably 12v out to the 12v powered coin meter


9. 0/P1 -----> Coin1 input, goes to pin 16 on jamma edge

10.0V -----> Ground, pin 1/2 on the jamma edge


11.KEY -----> plastic blocker / no pin on the connector


12. 12V -------> 12V in from the jamma edge, jamma pin 6

Flinnster2017-09-27 14:28:06

 

[K1ngarth3r]

Will do

So this is what I think the credit board does, just wondering what MET means?

Pin	Role	Description
1	SW1	Price of play for first game
2	SW2	Price of play for second game
3	0V	Ground to Power Supply
4	0/P2	Coin 2
5	LAMP	Pulses coin door bulb
6	12V	12V to Power Supply
7	MET	?
8	12V	12V to Coin Counter
9	0/P1	Coin 1
10	0V	Ground to Buld / Counter
11	KEY	Nothing
12	12V	12v to Coin Door Bulbs

K1ngarth3r2017-09-27 14:21:19

 

[Flinnster]

Just typed above..

 

[K1ngarth3r]

Cool, so MET isn't used for the coin counter then? Would that be for something like a digital counter such as the type you'd see on Dragon's Lair I wonder?

 

[Flinnster2]

Cool, so MET isn't used for the coin counter then? Would that be for something like a digital counter such as the type you'd see on Dragon's Lair I wonder?

No it is the coin counter / meter. Just fires a pulse that makes the meter increment the dial numbers by one (or click madly if something has gone wrong!)

 

[K1ngarth3r]

Okay, so it needs 12v and MET or MET and GND? I already have a black cable going to the coin mech.