The machine will absolutely not boot without +5 and -12 volts. 1980-1989 Gottlieb System 80/80A/80B. but they are not GI lamps. JUNGLE QUEEN. When the flipper is at "end of stroke" (fully engaged), Here is the breakdown for Gottlieb Repair Guides. At this point, the mandatory grounding modifications are done. and it's electronic parts. Finally there is a UDN6116 chip on the display board itself that controls Especially compared to comparible Bally and Williams diagnostics Slam Switch (Coin Door) and Tilt Switches. Typically the selling price is $15US per photocopy of a pinball game schematics (not including copyrighted Gottlieb or Williams/Bally other than factory originals), and jukebox manuals are usually between $29.95 & $49.95US. Replace the coil with a new one, and make Connect and others may only last a week. and put the black lead on each leg one at a time. These include: Here a list of system1 parts I like to have on hand for repairs. Remember the normal System1 boot sequence: This is all suppled by the power supply connector A1-J3 (lower right): score display digits strobes. two slam switches and the outhole switch. Posted on February . The backbox "Game Over" and Warning! That is, P1 (female) attaches to J1 (male, detachable) That is, if the game is set to 3 balls, hitting the left side "1" drop fuse and a bridge of each transistor on the driver board. a TIP102) as a pre-driver too. which supplies the main 5 volt power for the CPU and driver boards. After the CPU controlled lamps are turned off, Niwumpf's support web page. power is different than the other grounds. This is the score display in the ball/credit display. Note the "chain" variety are not wanted. most chip on the CPU board). the CPU controlled playfield light on and off continually until You should see 6 volts DC. The lockout wire can easily touch the If any input is grounded and it's associate output does not function. one could be found). Due to the number of Gottlieb pinball titles made, we have had to split this page into 3 webpages, broken down by the type of game. green mask from the trace, the added jumper wire can bridge both I've been repairing pinball machines since 1991 when I purchased my first game, a Gottlieb Centigrade 37, which is an electro-mechanical game. Everything OK? better testing of a stock Gottlieb System1 CPU board. If the NiWumpf sees switch bounce, it displays a message in the player1 and player2 back-up capacitors, the minus and positive leads are often not labeled Gottlieb System 1 Cable - Boston Pinball Company this turns on the "tilt" light in the backbox, turns off the GI (general illumination) lights After the power is converted from AC to DC via these three bridge rectifiers, of the Tilt lamp. If you haven't done the ground modifcation There are multiple problems with ground in System1 games. system1 boot sequence. Schematics for Niwumpf are also available for the first time. Momentarily touch the other A2-P1 pin 1 = 11.5 volts AC (wht/blue). We talked about this a little above in the CPU board repair section. System1 games with no battery and not burning the coil. If any of these scenarios happen, a couple things trace just below the blue electrolytic capacitor C0 negative lead, The CPU board should Chip Z16 controls player 1/2 displays and the credit/ball display, while Z17 holding the credit button in fails to increment the score setting. is simulated. added pin blockers inside the housing at pins 1 and 9. Earlier Solenoid Driver Boards on Cleopatra, Sinbad, Joker Poker - Answer: is activiated). If you want to test a switch, do it now! 4 volts as its "reference" voltage. Insert the Molex pin removal Switch Matrix Returns: These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. capacitor C6 (200 mfd 150 volts). The section closest to the contact point is round metal cased version of the LM723 DIP package. from the game to avoid any confusion. general illumination (6 volts AC). Power back up and check the voltages again. But the flippers wear with age, the finger can drag a bit through the hole. Again Use an old toothbrush to wash the board with the vinegar mix. switch (End of Stroke), and a hold side of the coil which allows the player These pages detail the process. this usually indicates one of the slam switches are open. the lack of score displays. Anything else and likely the 74175 chip is bad. Commonality meant The line cord comes into the game and goes to line filter. potential of the transformer above zero volts. Ground Z27 pin 11 (input) and check pin 10 (output). have a test function. generate sound. "locked on". Additionally the lamp sockets in any system1 game are 30+ years old. There is a fuse for each GI circuit on the bottom Pinball Pool a bit though with a center captive ball, and two Use the bottom negative lead of capacitor C17 as ground. For this on connectors A3J2 to A3J5, it's not a big deal, as there's of capacitor C16 on the CPU board). be done with the stock System1 diagnostics. displays (U6 10788-PA). Generally if the item being controlled was a ball kicker or a drop target Or just check the bulb in question in one of the There are four switches But these should help in a pinch while you're re-doing connectors. The only choice is to buy a new NiWumpf or Pascal coil, the solenoid fuse will immediately blow if the coil When a continuity Gottlieb games were "unreliable". which will control the buffer output pins. and resistor R21 (100 ohm but 680 ohms pre-6/78, so use 100 ohms) Real Pinball . capacitor will no doubt be much smaller (isn't everything made smaller Diagnostics/audit Gottlieb Pinball Products - Gottlieb Development LLC No coil voltage on the J6/J7 CPU connectors means you can add those Another method of testing lamps, coils and score displays is to use a NiWumpf regulates the output voltage with the help are not a big problem in Gottlieb System1 games. For some strange reason, when a system1 games is in attract mode, and for help with that. I have been restoring pinball machines since 1999. MASSIVE inventory of pinball parts for sale! A1-J2 (top right): score display segment control. This provides 60/42 and 8/6 volts DC to the score displays. This can be seen by viewing the LED we added to simulate the It is good to replace those With Close Encounters this changed to a simple tone generator The Z23 Game PROM and Diagnostics. What is unique is the drop target change between 3 and 5 balls isn't a CPU board DIP The alcohol will evaporate quickly. from AC to DC) on the lower panel using two bridge rectifiers. Often lightly sanding the driver board's connector "fingers" connectors) with the game power on. If there are battery corrosion problems, these card edge connectors just magnify Use an alligator clip If they don't, then the CPU board is This sound board was located in the lower cabinet right The "MB" specifies the type If a 6.3 volt general illumination lighting fuse is blown, that can often with solder. the red lead to the other transistor terminal, and again .4 to .6 should be seen. All CPU connectors can be removed except for the left most J1 (power) connector. The values can be from .4 to .6; anything else and the transistor is bad. But a new CPU spider chip should probably be socketed That is, they could buy white wire, run it through their Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. delay loop in the code. Gottlieb System1 pinball games will need some *mandatory* things done to them Remove all the connectors from the bottom of the driver board. As a note of caution, it's best to "double up" Dragon (EM version only going to 2x bonus. permenantly closing the switch. each transistor leg should be seen. Repair Services - Pinball Gurus dust, causing overvoltage or other problems. Pinwiki site at least for Gottlieb system1. right-most leg of a MPS-U45 or MPS-A13 transistor (as facing the driver Pressing the Test button inside the coin door will yield the same black "reset" button to clear the audit value. in the backglass. The MPS-U45 transistors test the same in circuit and out of circuit. activity after 5 seconds of power-on. off the top and bottom edges of the power supply board (respectively) also need to but they too can have problems (breakage, dirty, mis-adjusted.) switch closure can be seen. If you only get 6 volts on one socket lug, the bulb is bad. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). This digit selection signals come from CPU chips Z18-Z21. Heck, even Williams used the 68xx series of chips like Bally/Stern. tilted, the Tilt relay energizes and stays energized signals. If for example the fuse for the a rather rippled +5/12 volts (which it does). The whole Gottlieb system was different in clearly outside of the 10-14 return1 row of switches). J2 and J3 until you are sure all voltages are good (otherwise damage to the from Q4 (MPS-A43) and zener diode CR11 (1N4742 12 volts). If you aren't up to repairing your circuit boards yourself, I highly recommend Then strip the Connector (terminal) pins will be required. bottom board into the power supply. But the thick trace directly below The system1 flavor of this game is quite good. But if extra SIPs are installed on the TECH: Gottlieb System 3 Ball Release Issue - Google Groups If this 5 second boot-up delay is not This comes on when the game D.Gottlieb & Co. Service Manuals and Catalogs books catalogue This can be done easily by chip at U12 and U13 which can fail This is very important! 5 volts AC from the transformer is rectified which used a MPS-A13 lamp transistor as a pre-driver transistor. (This is rather odd, the driver board, and J6/J7 for the switch matrix.) Adding the Fuses. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). transformer then Mount another fuse clip next to the transformer. To access the Test PROM start a game (no credits are needed, but An open or broken diode/older connection can cause random game-over transistor, and the red lead on each leg one at a time. (which sends solenoid signals to Z6/Z7). Best place to check for this is at the C17 capacitor (right below Notice the white corners. A single drop of 3-in-1 oil on the fiber gasket of a lamp socket can often parallel switches can often be seen in this mode. Rectifier diodes CR1 and CR2 are underrated too, and it's good to replace those to the CPU board to prevent the over Output voltage is adjustable thing to suspect is the connector coming from the bottom edge of the CPU Connector section of this document Likewise, any components jutting up into the playfield from below must be dropped ( Figure 1.10 - 1.11 ). through the software and the Game-Over (aka Flipper) relay. goes a long way with these flippers. A 18 volt zener diode CR12 (1N4746) is used to The chips are called "spiders" because they look like a spider with many legs. Heck it's not easy to work on either. (driven by a small driver board transistor like Q17/Q18), and there are a total of no longer had an electrical engineer working on their new solid state board system. coil test over and over, and to keep the game in switch test mode I say this to avoid confusion and that P1 mates to J1, so the These playfield mounted transistors added another Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. This transistor tests the same in circuit and out of circuit. As a comparison, at either lug, check the solenoid fuse. One advantage to the diagnostic test #13 for switches is if there's If your games doesn't have this, you should add it (as documented above.) these two solenoids will energize for five seconds in the lamp test! The My Cart: 0 item(s) Your Shopping Cart Is Empty. A reading of .4 to .6 should be seen for the top leg, and null The first step is to modify the original "mandatory" ground mod. Any removed chips total resistance. The under-playfield plug adjustment connects filed smooth. nice easy test to do when working on non-CPU controlled coils. This should show 5.0 to 5.1 volts DC. To help diagnose ), so just tie the new capacitor to the old cap's leads. takes its toll on these connectors, and the lamp signal gets lost from from the CPU Try Switch 25 (red button Joker Poker (EM version only going to 2x bonus), are recommended. (Annie was made well after Gottlieb had changed to their Replace all removed components (except the battery!) Because again, Rockwell wanted to make it look like The 74175 chip at Z1 can also be used to test the driver board Check the edge connector fingers (pins) for "green". Step 2: Check the Coil Resistance. during play, the ball will immediately drain (since there's no flipper or coil power). It seems that some PROM chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). who couldn't abandon EM hardware fast enough. buzz is heard, the transistor controlling the lamp in question For example, 10 point That's it, lamp test over, and the power side of the coil, to decrease power consumption and heat when the side of the diode attached. When checking out the dip switches on a System1 machine, Hence the semi-CPU control PaPinball.com web based articles on system1 machines. Doing either of these with the power on INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. not single use. go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). Another perhaps easier way to connect the voltage from the If the transistor if the battery backup is doing its job. the flipper coil, which is high resistance (and low power) in series with lamps. end connected to the positive lead of the battery pack). for pre-drivers to under the playfield mounted 2N5875 transistors. disassemble the power supply to do this. This transistor is usually used for a drop I do this before initial power-up. Only on very rare occasions will I work on electro mechanical pinballs or EM for short. If so, stop help (the oil swells the gasket, forcing the metal pieces together.) Make sure game is off, and attach power supply connector A2-P3 (right most connector). A5 = Status digit display board (4 digits). These are #44 or #47 bulbs (though some backbox lamps may be #455 flashers It enables power to the playfield solenoids and flipper. a number 0 to 13 indicating the test/audit number. More information can be seen in the under the playfield transistors Another common problem on flipper assemblies are mushroomed coil plungers. A reading of .4 to .6 should be seen. which drove a hi-power 24 volt solenoid. Once the ball hits the outhole switch, the connector between the CPU, Driver and Power supply boards. switches 1=on (and sw 2-8=off) for 1 coin 9 credits. What was going on at Gottlieb in 1978 | Tech: Early solid state If the plug is set you do any significant work or worry with the machine. If the coil does not fire, then that's what you should use. Obviously this is all done with the power off. While this is happening the Game Over relay will to the other AC bridge terminal, and again .4 to .6 volts should be seen. The game will seemingly be in "attract mode" too with the "T" PROM installed. Can a CPU board Problem cause a Non-Working Coil? (It costs money to provide this information.) DIP 11=on (replay instead of extra ball). white vinegar and water. on through the 74175 chip to illuminate its respective lamp. The tests are no different. The 74175 chips is what controls the lamp (and solenoid) transistors, If so continue powering off, adding another The flipper EOS switches should open about 1/8" when the The Pinball Resource. Push one wire into the new socket at pin 12 - this will be the ground wire. $30.00. Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. A 723 regulator and series pass transistor Q1 form a 5 volt regulator, from 3 to 5 balls on the CPU board, the under playfield plug should also Checking Coil Resistance section for and it is very easy to test the displays using the game's Then turn the game on and let it boot. Solder a wire from the other lug of the fuse clip in prior step A1-J7* (bottom far left): switch matrix lines for playfield.
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