Team WPC: G10 error

[Rossz]

Hi guys,

I face a G10 error on a WPC95 MPU that I didn't manage to solve yet. The board has acid damage, and I had to change a few components, clean and do 2 jumpers to make it boot.

It now boots, but I get G10 error afterwards (serial number reads only 0's). G10 and game ROM were tested on another MPU and work perfectly.

Helped by the schematics (and their errors...), I checked almost every trace, and changed U5 U2 and U27 (near the battery pack), and afterwards U24, U13 and U14. I forgot, I also changed U9.

Still G10 error... do you have any leads for me ?

[Rossz]

Found out I have the wrong schematic: does anyone have a scan of the 16.10159.1 WPC95 MPU Schematic ? I have the 16.10159.2 and 16.10159.3.

The one I'm looking for is used on Congo only.

[Duncan Brown]

I have a set with orange cover, no box around the title, and dated
October, 1995. Part number 16-10159.1

Which pages do you need?

Duncan

[Duncan Brown]

OK, I've scanned the whole thing in. And Clay can bite me about posting
stuff at 600DPI, because all those tiny lines and words are unreadable
at 100DPI, and the 600DPI file is only 27MB.

http://backglass.org/williams/kordek_archives/wpc_95_schematics_16_10159_1.pdf

Duncan

[Kerry Imming]

On 2/25/2016 9:33 AM, Duncan Brown wrote:
>
> OK, I've scanned the whole thing in. And Clay can bite me about posting
> stuff at 600DPI, because all those tiny lines and words are unreadable
> at 100DPI, and the 600DPI file is only 27MB.
>
> http://backglass.org/williams/kordek_archives/wpc_95_schematics_16_10159_1.pdf
>

Thanks Duncan.

This is the first I've heard mention of the .1, .2, and .3 version of
the WPC-95 boards. Does anyone know what the differences are? Is it
board changes, or just schematic corrections?

- Kerry

[Duncan Brown]

I have seen some Williams documentation referencing the fact that some
Congo games shipped with WPC-95 boards instead of WPC-S, as a test of
the new system. So that probably explains why only Congo used the .1
schematic set (if that is in fact the case.)

The .1 CPU schematic lists no part number for the schematic Revision
Level 8, and A-20119-XXXXX as the board number in question.

The .2 CPU schematic lists a part number of 16-10195 for the schematic
at Revision Level 1, and still A-20119-XXXXX for the board in question.

The .3 CPU schematic lists a part number of 16-10296 for the schematic
at Revision Level 0, and now the board in question has part number
A-21377-XXXXX

I have not studied the teeny-tiny details in question to find all the
differences. I leave that to Where's Waldo fans...

Duncan

Duncan

[Rossz]

Thanks a lot Duncan for scanning the whole thing!!!

Regarding differences I know there's at least one between U5 and R128, maybe the infamous U21 diode and strap too, but that's all I found yet (the hard way)

[Kerry Imming]

On 2/25/2016 11:31 AM, Duncan Brown wrote:
> I have seen some Williams documentation referencing the fact that some
> Congo games shipped with WPC-95 boards instead of WPC-S, as a test of
> the new system. So that probably explains why only Congo used the .1
> schematic set (if that is in fact the case.)
>
> The .1 CPU schematic lists no part number for the schematic Revision
> Level 8, and A-20119-XXXXX as the board number in question.
>
> The .2 CPU schematic lists a part number of 16-10195 for the schematic
> at Revision Level 1, and still A-20119-XXXXX for the board in question.
>
> The .3 CPU schematic lists a part number of 16-10296 for the schematic
> at Revision Level 0, and now the board in question has part number
> A-21377-XXXXX
>
> I have not studied the teeny-tiny details in question to find all the
> differences. I leave that to Where's Waldo fans...

PinWiki lists a service bulletin 86 for the early/prototype games.
http://www.pinwiki.com/wiki/index.php?title=Williams_WPC#WPC-95_CPU_2

- Kerry

[Duncan Brown]

OK, I misspoke earlier - Congo shipped with all WPC-95, but added
support for BACKwards compatibility with WPC-S when the kits came out
(for the obvious reason that anything you'd want to kit was going to be
WPC-S, as Congo was the first production WPC-95 game.)

Jack-Bot was the game I was thinking of, that shipped some with WPC-95.
I have an operator's manual supplement for WPC-95 for Jack-Bot, plus a
note handwritten by someone (probably Steve Kordek) along the top of a
manila folder, saying that 100 of them were shipped that way as a test
of the new board system.

Duncan

[Pin Del]

I had one of the WPC95 jackbots and a 2nd one was WPCs .

Slugfest also had 3 revisions on the schematics and I still
Have Rev,1 on that game.

Pin Del,

[John Wart, jr]

Who Dunnit also shipped with a handful of WPC-95 games.

I wasn't there, and I know you were, but Congo was released as a WPC-95
game, a kit game that would go in any narrow body WPC-S or WPC-95 game,
and then as a 2nd run of complete games to use up the left over 'kits'
that didn't sell well apparently.

The 2nd run of complete games were run after TOTAN in B&W cabinets (I
know this, because I had a B&W Congo with pieces of TOTAN cab used
inside the cabinet)

There are at least 3 different WPC-95 MPUs, I've seen examples of 3
different varieties from boards that have come in for repair.

The earliest of WPC-95 CPUs from Congos and Jackbots had a service
bulletin released, #86, that had a trace cut, additional diode and
additional resistor to fix an issue with premature battery drain.

One later revision had 2 electrolytic caps above the ASIC, another only
1. I can dig into my repair notes to see if I wrote down anything else
of interest about them.

Congo didn't support WPC-S until ROM version 2.0, when the routine was
added to detect whether the game had a WPC-S or WPC-95 MPU.

Ted Estes nicely took the time to explain to me how the CPU ROM would
detect which board it was installed in - as a WPC-S game had functions
on the fliptronics board, while the WPC-95 had the functions on the
Driver board.

WPC-95 has more video RAM than WPC does. The CPU tries to read and write
to that video RAM.

If it succeeds, it's a WPC-95 board
If it fails, it's a WPC-S board.

I had an alkaline damaged CPU board come in last year that worked great
with its early 1.3 ROM, but when I upgraded it to the 2.1 release as
part of the repair, the flippers and a couple solenoids stopped working!

Sure enough, an address line wasn't making it off the CPU board due to a
via that was compromised by alkaline. A jumper fixed that problem!

[Rossz]

Thanks to Duncan and his schematic, the G10 error is gone, and CPU is booting fine!

However I have no playfield lights or coils (switchs are OK). Could it be the blanking signal not making it to the power driver board ?

There's continuity between U5 pin 8 and J211 pin 31.

[AVP Pinball Division]

"Duncan Brown" <dun...@ledgaming.com> wrote in message
news:nan6si$1nvp$1...@gioia.aioe.org...

Open two scans in Photoshop. Add one into the other as a new layer at 50%
transparency. Switch that layer on and off and the differences will become
apparent (if any).

I compared two Circus Queen schematics in that fashion and found minor
wiring differences. :)

--
Pistol Pete
AVP Pinball Division
Parkville, MD
410-583-9200
web: http://www.AVPpinball.com
email: ser...@AVPpinball.com

[AVP Pinball Division]

"Duncan Brown" <dun...@ledgaming.com> wrote in message

news:nankef$ha0$1...@gioia.aioe.org...

>
>
> OK, I misspoke earlier - Congo shipped with all WPC-95, but added support
> for BACKwards compatibility with WPC-S when the kits came out (for the
> obvious reason that anything you'd want to kit was going to be WPC-S, as
> Congo was the first production WPC-95 game.)
>
> Jack-Bot was the game I was thinking of, that shipped some with WPC-95. I
> have an operator's manual supplement for WPC-95 for Jack-Bot, plus a note
> handwritten by someone (probably Steve Kordek) along the top of a manila
> folder, saying that 100 of them were shipped that way as a test of the new
> board system.
>
> Duncan

I worked on one of the one-off Jackbots. :) The county-code DIP switch
stack was installed backwards. No wonder the owner couldn't get it to
default to US. :)

[François Davroux]

Hello yes it's an OLD thread but there is some useful information :
I'm looking for the WPC95 files for JACKBOT (Cpu and if exists sound)
Also interested by a scan of the "the handwritten note" ...
Regards,
François