Author Topic: Coin Optics and Hopper Optic All Read Zero (Read 23940 times)

rokgpsman · « **Reply #100 on:** April 22, 2018, 08:25:03 PM »

Quote from: Badbaud on April 22, 2018, 08:03:00 PM

+Vb and Vb GND ref des refer to the leads of the diode as being the test points not the pad on the right which, if you follow it carefully goes to the anode side of the Tranzorb for the 5 volt logic.

hmm, ok, I guess my drawing is for a different board, it has D3 as the 5 volt zener and D2 as the spike suppressor for Vb voltage, and has D2 connected to CR25, CR25 is series rectifier that makes Vb voltage.

Trooper11040 · « **Reply #101 on:** April 22, 2018, 08:26:29 PM »

So D3 came in at 9.6v on the DC side of the meter

rokgpsman · « **Reply #102 on:** April 22, 2018, 08:27:56 PM »

That should mean your mpu board is ok, it is producing the VB optic parts voltage. Now you have to look for how it gets from there to the optic parts. That 9.6vdc goes from the mpu board to the motherboard J1 connector, pin 27A, then thru a board trace on the motherboard and comes out at motherboard connector J3 pin 25. You could pull your motherboard out and check for continuity from J3-25 to J1-27A. Since the VB voltage for the hopper coin out sensor comes from a different connector on the motherboard than the VB voltage for the coin optic boards I'm thinking your problem has a good chance of being on the motherboard. But that is yet to be proven,,,, and I'm not sure if my drawings are accurate for what you have.

rokgpsman · « **Reply #103 on:** April 22, 2018, 08:47:17 PM »

Also, you will want to look extra close at your mpu board connector J1, make sure pin 27A is not bent over or broken since that is how the VB voltage gets from the mpu to the motherboard.

And likewise look closely at your motherboard connector P1 pin 27A connector and the J3 pin 25 connector.

Badbaud · « **Reply #104 on:** April 22, 2018, 09:10:11 PM »

Quote from: Trooper11040 on April 22, 2018, 08:26:29 PM

So D3 came in at 9.6v on the DC side of the meter

You are going to have to clear your message folder of old posts. I am getting folder full and can't post to it.

Trooper11040 · « **Reply #105 on:** April 23, 2018, 05:06:14 AM »

Quote from: Badbaud on April 22, 2018, 09:10:11 PM

Quote from: Trooper11040 on April 22, 2018, 08:26:29 PM
So D3 came in at 9.6v on the DC side of the meter
You are going to have to clear your message folder of old posts. I am getting folder full and can't post to it.

Cleared it

Jim · « **Reply #106 on:** April 23, 2018, 08:28:00 AM »

there is a good book on the S+ and PE+ available, go to page 93 in this book, it will explain the entire voltage distribution as far as the +VB is concerned!.

Jim

Trooper11040 · « **Reply #107 on:** April 23, 2018, 08:47:52 AM »

Quote from: Jim on April 23, 2018, 08:28:00 AM

there is a good book on the S+ and PE+ available, go to page 93 in this book, it will explain the entire voltage distribution as far as the +VB is concerned!.

Jim

Where do I obtain this book

Trooper11040 · « **Reply #108 on:** April 23, 2018, 09:27:38 AM »

So I just checked every wires continuity from the MPU to the J50 harness and every wire was good. So that eliminates the harness as the issue. I know Iâ€™m getting 9.6vdc of power off the +vB circus. Definitely narrowing it down to the last few places

Trooper11040 · « **Reply #109 on:** April 23, 2018, 09:58:35 AM »

I also have continuity between J1-P27 and J3-P25...so thats good

Jim · « **Reply #110 on:** April 23, 2018, 12:46:39 PM »

according to the book I referenced here is the flow chart for the voltage from the mother board to the optic board.

J/P13 PIN 7 is ground. that ground travels through the motherboard and is present at J/P3-PIN 23.

J/P3-23 IT GOES TO J/P 203 PIN 14 IT GOES TO J/P 301 PIN10 IT GOES TO J/P50 PIN 7.

+ VB IS MADE ON THE CPU BOARD, it's output is at J/P1 pin 27A travels through the mother board and is at J/P3 pin 25
J/P 3-PIN 25 GOES TO J/P 203 PIN 3, GOES TO J/P 301 PIN 1, IT GOES TO J/P50 PIN 8.

hope this helps

Jim

k

Trooper11040 · « **Reply #111 on:** April 23, 2018, 01:03:29 PM »

Once I get home, Iâ€™ll test these

Trooper11040 · « **Reply #112 on:** April 23, 2018, 01:38:54 PM »

I will check for continuity on these later tonight. Getting ready to finish this and get it running!

Trooper11040 · « **Reply #113 on:** April 23, 2018, 04:50:15 PM »

So here is something I just noticed. Looking at the diagrams, Its Showing the circuit to both optics boards (hopper and coin in) going thru RP1...RP1 on my MPU, is missing. Could that be causing my issue?

Trooper11040 · « **Reply #114 on:** April 23, 2018, 05:54:23 PM »

Badbaud · « **Reply #115 on:** April 23, 2018, 07:54:59 PM »

Yep, those are opto input series resistors . The optoisolator for 4 inputs won't fire without them.

Trooper11040 · « **Reply #116 on:** April 23, 2018, 08:00:03 PM »

Quote from: Badbaud on April 23, 2018, 07:54:59 PM

Yep, those are opto input series resistors . The optoisolator for 4 inputs won't fire without them.

Where can I buy these from?

Badbaud · « **Reply #117 on:** April 23, 2018, 09:27:42 PM »

PM me

Jim · « **Reply #118 on:** April 24, 2018, 12:12:10 PM »

as Badbaud pointed out, you do need RP1, how ever you still need +vb at pin 7 and 8 of the coin in optic P50. should be there when power is applied and the board in place (that's where the +vb comes from.

Jim

that jumper is supposed to be there, the black and white wire, it should be on pins 26 and 27 of P5, it connects B ground and H ground.

where does that yellow wire terminate or begin, I'll look at the schematics and tell you what is is!

Jim

Trooper11040 · « **Reply #119 on:** April 24, 2018, 12:58:46 PM »

Quote from: Jim on April 24, 2018, 12:12:10 PM

as Badbaud pointed out, you do need RP1, how ever you still need +vb at pin 7 and 8 of the coin in optic P50. should be there when power is applied and the board in place (that's where the +vb comes from.

Jim

that jumper is supposed to be there, the black and white wire, it should be on pins 26 and 27 of P5, it connects B ground and H ground.

where does that yellow wire terminate or begin, I'll look at the schematics and tell you what is is!

Jim

So you are saying I should still have power at J50? I donâ€™t think I do but every wire from the harness to J50 has continuity.

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Author Topic: Coin Optics and Hopper Optic All Read Zero (Read 23940 times)