Hi Folks, Im having troubles getting 6 plays per 25 Cent coin out of my space mission.
Adjustments: 25 Cent: 6 plays, 10 Cent: 3 plays, 5 Cent: 1 play, 1 play for 1 coin 3 plays for 2 coins: off
As far as I understand, the following should happen if I throw in a 25 Cent coin:
First Step (highlighted green):
The 25 Cent Coin closes 25 Coin Switch and energizes the coil of the 25 Cent Relay.
Second Step (highlighted orange):
25 Cent Relay is hold by Score Motor switch 5b
Third Step (highlighted yellow):
Score motor ist started by 25 Cent Relay switch.
Schematic1 (resized).png
Fourth Step (highlighted red):
Credit unit Set Up Coil is energized through 25 C Re Switch and Index Score Motor Switch E. First play is credited. (Note on-off designators shown in the highlighted 1 Coin=1Play 2 Coins=3 Play Adjustment Jack would have to be exchanged in the schematic)
Fith Step (highlighted grey):
Scoremotor contact Imp-B pulses 5 times, Game 2 to 6 are credited.
Schematic2 (resized).png
The timing should look like this:
TimingScheme (resized).png
Actually I only get 5 plays. I verified, that the schematic is right (i.e. the path highlighted in red is open due to the 1 coin..1play adjustment jack). Now if the schematic is right, where should I get my 6.th play from (in the timing scheme this would be the first play)?
Thanks
Patrick

Hi Mark thanks for the quick reply.
Good idea to use the Motor Service Jack!
After disableing the score motor, upon the 25 cent coin switch closing, three relays are energized: reset relay, coin relay und 25 cent relay. The credit unit does not move.
When manually engaging the 25 cent Relay, without closing the 25 cent coin switch, reset relay and coin relay are energized, credit unit does not move.
Right now it's midnight at my home, so I have to postpone further experiments and analysis.
Don't understand, why the coin relay is energized. Checked the Credit unit end of stroke switches, they are open.
Patrick

Hi,
first thing in the morning I checked the machine and the schematics. The red path has to be different from my first post. As the machine enegizes the coin relay upon a 25 cent coin (score motor still in no service position), the schematic is right and my earlier assumption is wrong. Should look like this:
5Versus6 (resized).PNG
The line to the very right (right end of the red highlight) energizes the coin relay.
So now I am looking even harder for the 6-th. play. The grey highlight gives 5 plays. The marine highlight doesn't seem to provide a game.
There must be a reason for the extra effort to energize the coin relay when 1 or 6 balls are needed (red highlight). But I don't get it.
The Coin relay can start the score motor. Can it be, that in the 6 play setting, the score rotor runs a full revolution (360 °, two cycles) instead of only half a revolution (180°, 1 cycle)? But if so, wouldn't there be 10 plays?

By the way, schematic uses "play" as far as the credit unit ist concerned, but also "game over". Are "play" and "game" the same thing or is there a difference?
Patrick

Solution?
Just recognized, that the 25 Cent coin automatically starts a play, while the 10 Cent coin doesn't. So the missing play seems to be the one started automatically without setting up the credit unit.
Patrick

Hi Mark and mrm,
mrm is right, starting with 3 games on the credit wheel, after first coin there are 8 games on the credit wheel and "1 player can play" light is on. Second coin increases wheel to 13 and "2 player can play" ligth is on.

My credit wheel is of by two games. (When the "1" has changed to blank, I still get two games. Can the credit unit wheel be adjusted? From cleaning the swinging target unit, I know there the finger wheel can not be adjusted rotation wise on the axle.

While the bonus is added correctly at the end of a ball, double bonus does not count up enough. Assume there could be a problem with the double bonus relay dropping too early.

The rest on my machine seems to me ok. So if you need some details during restauration, I can provide photos or measurements.

Should I start a new thread for this?
The image shows the count up coil (1), the count down coil (2), the end of credit switch (3) and the maximum credit switch (4). The rod number 5 actuates the end of credit switch (3). Rod number 6 actuates the maximum credit switch. Most of the assembly looks original. The only suspect part is rod number 5. Looks like this one is added later.
The credit wheel is form fit on the axle (0 degree or 180 degree). So to correct the number of displayed credits, I would have to bend Switch 3, which looks original. Rod number 5 moves to much if relocated. Does anybody have an image of an original credit unit for me to compare with?

Credit Unit (resized).PNG

Thanks a lot, works like a charm now.
One last question just for my understanding. I disconnected the coin lock out coil some time ago, because it made to much noise. But the way I understand the schematics, the only instances it is not energized are "reset", "machine off", "score rmotor running" and "credit unit max credit is reached". This means, nothing stops the operator to throw in a 25 Cent coin, when Credit is 33. Thus he gets just 1 game for 25 Cents. What a bad deal! Adding a 25 cent coin, while all 4 players are activated reduces the number of games from 6 to 5. How would the oprator know about all this? Especially as the maximum amount of games is adjustable.
Once again thanks a lot!