Discussion:
1976 Williams Aztec SCHEMATIC?
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Bay78
2011-03-23 01:39:04 UTC
Permalink
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,

Bay78
em pinball
2011-03-23 02:18:39 UTC
Permalink
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
fun game to play. check your bonus unit. it has to zero out to step up
the ball count and kick the ball out. norm
Kerry Imming
2011-03-23 03:21:17 UTC
Permalink
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
Aztec Schematics are available here ->
http://www.ipdb.org/search.pl?any=aztec&searchtype=quick#119

- Kerry
seymour.shabow
2011-03-23 18:08:17 UTC
Permalink
Post by Kerry Imming
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
Aztec Schematics are available here ->
http://www.ipdb.org/search.pl?any=aztec&searchtype=quick#119
- Kerry
If you want to print that out at its proper size Staples will do 24x36
for $3. I never realized how cheap it was to have black and white stuff
printed large.

-scott CARGPB#29
Kerry Imming
2011-03-23 23:15:33 UTC
Permalink
On Mar 23, 1:08 pm, "seymour.shabow" >
Post by seymour.shabow
If you want to print that out at its proper size Staples will do 24x36
for $3.  I never realized how cheap it was to have black and white stuff
printed large.
-scott CARGPB#29- Hide quoted text -
- Show quoted text -
That's good to know, thanks Scott. I never checked into prices
because I always assumed it would be much higher.

- Kerry
seymour.shabow
2011-03-23 23:43:51 UTC
Permalink
On Mar 23, 1:08 pm, "seymour.shabow" >
Post by seymour.shabow
If you want to print that out at its proper size Staples will do 24x36
for $3. I never realized how cheap it was to have black and white stuff
printed large.
-scott CARGPB#29- Hide quoted text -
- Show quoted text -
That's good to know, thanks Scott. I never checked into prices
because I always assumed it would be much higher.
- Kerry
Me too, Kinko's said they do it for 75 cents a square foot which led me
to ask staples when I was there mailing something UPS. I printed out a
tournament bracket there and it worked out a lot better than me trying
to draw one on poster board.

Now, buying the whole printer than can print that large? That's expensive.
Bay78
2011-03-24 07:14:09 UTC
Permalink
Well, I went ahead and looked for some closed switches that should be
open. I found a switch on the outhole relay that was closed. I opened
it and no more motor turning on power up if the ball is in the ball
through. That is the good news. The bad news is I was dumb and opened
some other switches that shouldn't of been open and now the game
doesn't start , and the scores didn't reset! However, I went back and
while the game was off I manually pushed the white plastic that the
relay actuates and figured ( or thought ) out which switches needed to
be open and or closed. Then the score resets now but I still can't get
the game to start again. I tried looking over the schematic but I'm
not clear on how to read those yet. I'm almost positive I have the
switches that I changed back to where they were. I'm not sure what now
to check for but I figured I'd give a status update. Thanks again for
all the help,

Bay78
Kerry Imming
2011-03-24 11:42:14 UTC
Permalink
Post by Bay78
Well, I went ahead and looked for some closed switches that should be
open. I found a switch on the outhole relay that was closed. I opened
it and no more motor turning on power up if the ball is in the ball
through. That is the good news. The bad news is I was dumb and opened
some other switches that shouldn't of been open and now the game
doesn't start , and the scores didn't reset! However, I went back and
while the game was off I manually pushed the white plastic that the
relay actuates and figured ( or thought ) out which switches needed to
be open and or closed. Then the score resets now but I still can't get
the game to start again. I tried looking over the schematic but I'm
not clear on how to read those yet. I'm almost positive I have the
switches that I changed back to where they were. I'm not sure what now
to check for but I figured I'd give a status update. Thanks again for
all the help,
Bay78
The score motor should not run at start up whether or not the ball is
in the outhole, so something else is wrong too.

I recommend going back and double-checking any switches you adjusted.
Actuate them by hand like it sound like you're doing and see which
should be open or closed; you can reason it out by looking at the
operation. Be sure to only adjust the fixed blade of the switch.
There should be about 1/16" gap when they are open. Take your time
and make a LOT of tiny adjustments until it's right.

Make sure there are credits on the game when you try to start it.

If the start button still doesn't work, hit the COIN relay manually
and see if a game starts.

Manually put some scores on the score reels to make sure reset is
completing. If so, the more details you can post about exactly what
happens when you press start button the more help we can provide.

- Kerry
AddictedToEMs
2011-03-24 12:36:29 UTC
Permalink
Clay's guide always helps immensely when a game won't start - you can
follow the progression and see what isn't actuating.

Williams Start-Up Sequence.

When the start button is pressed, the credit unit is decremented. This
is done through the credit unit zero position switch and the 2nd coin
relay (and the ball count zero position switch).
The end of stroke (EOS) switch on the credit unit decrement coil will
energized the coin relay.
The coin relay will trip the game over relay.
The coin relay will energized the reset relay. The score motor will
run.
The reset relay will energized the ball count unit reset, through the
score motor.
The reset relay energizes the 2nd coin relay latch and game over relay
latch coils.
The reset relay will energize the score reset relays, through the
score motor.
The score reel reset relays will zero the score reels, through the
score motor. The score motor will continue to active the score reset
relays until all the score reels reach the zero position.
The reset relay activates the bonus unit coil until the bonus unit
zero position switch is activated.
When the bonus relay drops out, the outhole relay is energized through
a different bonus unit zero switch and score motor switch.
The outhole relay will run the score motor. The bonus unit will step
up once. The ball will be kicked to the shooter lane.

Following these sequences step by step, you can usually generally
locate the start up sequence problem. For example, say you have a
Gottlieb multi-player game. After pressing the start button, the score
motor starts turning, and the score reels all move the zero position.
But the score motor keeps spinning and nothing more happens. Looking
at the start-up sequence, we can see this would probably be a problem
with the "SB" relay and the player unit (or maybe a dirty score reel
zero position switch, which occurs in the previous step).
Bay78
2011-04-01 08:05:47 UTC
Permalink
Well, I have good news. I had a friend come over and help me through
some of the issues and now Aztec is playable. The ball spits out as
per normal etc. However, that is for one player only. I had to
manually set the player step unit to player one and leave it there.
Then when you play you can't add player 2 or 3 or 4 because that step
unit doesn't change to player 2, 3 , 4 . So Its in need a a FULL clean
I think and then I'm thinking I'll be 100%. Any tips for cleaning that
step? I've never done one before. Thanks,

Bay78
AddictedToEMs
2011-04-01 13:10:50 UTC
Permalink
Take pics before you take it apart. I use mean grean and a green 3M
scrub pad to get the coating off the pads on the wheel and the spider
arm contacts, then clean with alchohol and put a tiny bit of silicone
grease on them. You may need to clean the old gunk out of the gear
shaft depending on how easily it turns. Also when taking it apart
count the number of turns when unwinding the spring. That will be a
good place to start when putting it back together, but you may need to
wind it more/less tight to get it to work properly. To test, just
manually engage the solenoids to make sure it counts up, then resets.
If it works correctly manually, it should work electrically.

Scott
Kerry Imming
2011-03-23 03:34:26 UTC
Permalink
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
Check the coin switches and the coin relays to see if any are stuck
on. If not, find the score motor at E4 on the schematics and trace
down to find the set of switches that runs the score motor. When you
find which one's stuck on, post back and we'll help you with what to
check next.

- Kerry
http://www.Team-EM.com
Bay78
2011-03-23 05:08:20 UTC
Permalink
AWESOME! Thanks for the help guys. I'll check that out and post it up
what happens. Would anyone happen to have or know where to get a
manual for this game?
toddvolk
2011-03-23 06:47:23 UTC
Permalink
Post by Bay78
AWESOME! Thanks for the help guys. I'll check that out and post it up
what happens. Would anyone happen to have or know where to get a
manual for this game?
You can get it the same place as the schematic:

http://www.ipdb.org/machine.cgi?id=119

I posted the same question and found everything I needed here. The
manual is very detailed, and shows all the relays, and game
adjustments.

Enjoy that game. I've been working on fixing my Aztec for about 3
weeks off and on, and it is a great player.
toddvolk
2011-03-23 06:50:19 UTC
Permalink
Post by Bay78
AWESOME! Thanks for the help guys. I'll check that out and post it up
what happens. Would anyone happen to have or know where to get a
manual for this game?
Had some similar problems with mine, so you might check the bonus
stepper unit (check and clean all the steppers) as well as the out
hole relay.
AddictedToEMs
2011-03-23 12:51:16 UTC
Permalink
If you need a repro manual/schematic - I have a set for sale $15
shipped.

Scott
John Robertson
2011-03-23 17:36:26 UTC
Permalink
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
If you don't want to tape sheets of schematics together (ala ipdb.org) I
have full size copies of the original schematics for $15 plus postage...

John :-#)#
--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
John Robertson
2011-03-23 17:36:43 UTC
Permalink
Post by Bay78
Hello there. I just picked up a Williams Aztec and love the machine.
I'm having an issue when I turn on the machine and if the ball is in
the ball through I hear a motor consistantly turning under the
playfield, and the relay in the coin door keeps going off. The scores
will reset when start is pushed and if the ball spits out (or if I
manually hit it out of the through) it will play fine until the ball
drops into the through again. Then the motor keeps turning below again
until I manually get the ball out of the through. Also it doesn't
change from ball one , I'm guessing from the same issue. I'm wondering
if anyone here has any suggestions? Or maybe a PDF or a copy of the
schematic they could email me? Let me know and thanks in advance,
Bay78
If you don't want to tape sheets of schematics together (ala ipdb.org) I
have full size copies of the original schematics for $15 plus postage...

John :-#)#
--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
a***@gmail.com
2013-02-22 19:32:46 UTC
Permalink
i just picked up a 70s williams em game called gay 90s' if you play one player the ball count is fine but when you play 4 players the ball count changes to ball 2 on player 3 not to completing cycle anyhelp on this would be great. thanks angelo
a***@gmail.com
2013-02-28 17:41:53 UTC
Permalink
Post by a***@gmail.com
i just picked up a 70s williams em game called gay 90s' if you play one player the ball count is fine but when you play 4 players the ball count changes to ball 2 on player 3 not to completing cycle anyhelp on this would be great. thanks angelo
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