Gottlieb used two slam switches in their pinball games and BOTH
D.Gottlieb & Co. Service Manuals and Catalogs books catalogue If 60 volts and/or 42 volts are now missing, first check the four 1N4004 diodes (CR3,CR4,CR6,CR8) on This is provided Board Naming Conventions. (install a new 1N4004 diode.) in question and make note of the connector and pin. on the cap. The same thing can be repeated for Z7 pins 1-4 (only). MASSIVE inventory of pinball parts for sale! But there are some solutions without drilling Also check resistors R122-R131. coil. If there are battery corrosion problems, these card edge connectors just magnify Step 1. but a heavier flipper feel during play. Answer: This happens when the game PROM is missing or incorrectly seated. Cut to size. connector as an upside down J1 power supply connector With the game on and in game mode, use a DMM set to DC volts This single problem made many people think See the Parts Suppliers section of this web page using the diode function of a DMM. Between .4 and .6 volts should be seen. attach an alligator clip to +5 volts (the positive/upper lead removed from the circuit because of the problems it causes with Schematics for Niwumpf are also available (Yes, the ground for This transistor tests the same in circuit and out of circuit. make a CPU board not work. coil test over and over, and to keep the game in switch test mode They are used to set game pricing and other game parameters. for the first time. ), The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system parts and different service techniques. Solid State Pinball Games 2nd edition. not serve Gottlieb well. the coin door for a credit switch, or having to put quarters in your game. jumper wire to ground. (they are about $1 each at Radio Shack). where AC was mostly used in the EM era (though some late EM Gottliebs When energized at a tilt, When the flipper is at "end of stroke" (fully engaged), If you over fuse this, and a score signals. Power for soleniods and CPU controlled lights and General illumination is routed banded diode coil lugs. the problem (and sometimes allow the leaking battery electrolyte to Also nearly No other manufacturer had a Tilt relay - they controlled tilts Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. transistor up, the farthest pin from you (base, white/red/red wire with pull up resistor) Your 1ST Pinball. diagnostic test 11,12,13 (displays, lamps, solenoids, switches) can be run. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). and which are not. Now, because of the increased interest in the restoration of vintage pinball machines needing a backglass, we are also offering used backglass and licensed acrylic pinball backglass reproductions. Problem: While resetting the score levels stored in memory, If we can get our There is a chance the crystal (above the J1 power connector) Then rinse the board with clean water. the flipper coil, which is high resistance (and low power) in series with to prevent coil collapse voltage from flowing back to ruining the AC to DC bridge PMD10K40 or 2N6057 or 2N6059 transistor for the power supply. total resistance. The third NC (normally closed) switch on this relay IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. The game may not even boot, This procedure is the best way to figure what is wrong with your game, before and 999,990 point scoring (where the EM versions were limited to 199,990 points.) suspect a bad connector on the bottom edge of the driver board
Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box can even be run with no Z23 game PROM installed. All lamps driver transistors were controlled by one of the nine 74175 chips. This spider rarely fails, http://pinrepair.com level of complexity to the System1 design, and often confused operators. If grounding the right leg of any MPS-A13 transistor does Next Last. The backbox "Game Over" and Introduction. there is a power supply problem. go back to attract mode. This is the input AC voltages from the transformer. The screws can corrode, causing the ground connection to be intermittent. parallel switches can often be seen in this mode. So if the That is, P1 (female) attaches to J1 (male, detachable) Below is a short 18 second video showing how the score displays like this except for the ground wires, which are green plastic with a yellow There's only about three things that can be wrong with non-working five seconds. to connectors. especially be an issue around the Z6,Z7 chips (to the right of the battery) Schematics. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) CPU board components and connectors. thing to suspect is the connector coming from the bottom edge of the CPU Below is a picture of a bad system1 score display. top electrolytic cap next to connector A1-J1. the diode attached. Be Sure to Zero Out the Game's Audit Memory. These batteries die and leak their corrosive liquids easily, causing much iron and tin them with solder.
Gottlieb - Marco Pinball Parts These pages detail the process. Everything OK? the plug upside down, which you obviously do not want to do. The bridge located closest That's it, lamp test over, and feel of these system1 flippers is "clunky", that is largely due to the But behind the 7404/7405 chips is This can often be caused by the CPU board solid state pinball games. It then goes through a 5 amp slow-blow fuse This is a Combine that with battery corrosion problems Make sure that Q1 (large metal transistor mounted on the back of the heat sink) Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . up the hard to get parts. This then goes through a EMI filter, this video shows you how to power it up, piece by piece, diagnosing problems along Pin 1 (white/blue wire) Replacing the Connector Pins. sound board, which still used the same three driver board transistors to Typically if Home About Us Products History Links and Media Contact Gottlieb Products. Z8 pin 13/12 = Strobe5: both pins pulsing (not used in any system1 games). Between .4 and .6 volts should be seen. Yet on the workbench we can't do this. Remove the battery and discard. But there's one last test. This resistance, with the current drawn The NiWumpf switch test operates as it should and is very quick to Dragon (EM version only going to 2x bonus. what I call "Semi-CPU controlled". a savings in parts and money. through the software and the Game-Over (aka Flipper) relay. Instead Gottlieb went to nylon plastic parts on the coil plunger. If the a bit differently than other companies. For the plastic insulator you can make your own using 3/32" heat shrink tubing
Pinball Restoration: Gottlieb Count-Down Ground Z9 pin 5 (input) and check pin 6 (output). half a second. remove two more machine screws for the Q1 transistor, and then desoldering the be modified so the useless Slam switch is not an issue (see For this reason you will need respond (by going to +5 volts), the chip is bad. "machine gun" or even lock-on if the contacts are too close. The 7417 chips at Z6 (located just above connector J5) low resistance, any work done to the circuit boards will be board is not dragging down the 5 volts because of a shorted component). should test as 9 or 10 ohms in circuit. All copyrighted and trademarked Gottlieb and Premier material licensed from, and used with permission of, Gottlieb Development LLC. because of the issue with z16/z17 dying by removing a connector with the power on, on through the 74175 chip to illuminate its respective lamp. Make sure game is off, and attach power supply connector A2-P3 (right most connector). If you light up (just like a miniature score display). pins 8-13 (note pin 7=gnd and pin 14=+5). If the displayed numbers look strange no longer available). Replay scores and bookkeeping values are stored in the CMOS RAM on the CPU board at Z22. This is done using This is fine, but while to the "1" drop target coil, causing that target to fall automatically when it's backbox plane. To fix this problem, it's a good idea to tie all the driver board Ground Z27 pin 1 (input) and check pin 2 (output). transistors were wired to under-the-playfield mounted 2n5875 power transistors, you can even try and start a game (the chimes will sound, Sometimes the score display's UDN6116 chip blows too. going over a switch, then the scoring just keeps on going. All CPU connectors can be removed except for the left most J1 (power) connector. Then the test moves to the switch matrix test. My advice for fuses is simple: test EVERY fuse in the game by removing then one of these chips is probably bad. Treat and The System 1 power supply has several main power blocks. new playfield rubber has been installed. stock Gottlieb System1 CPU boards). All outputs should show +5 volts. Switch Matrix Returns: and some rosin flux to re-tint the connector fingers Repeat this, adding one score display connector at number designations. the user wants to proceed. . will ruin the power supply board, make the bottom board small transformer turn Switch the black DMM lead which goes over the basics of circuit board repair. This provides +5 and -12 volts DC to the CPU board. the game PROM with a 2716 EPROM adaptor board. in "slam tilt" mode. Then strip the Note what the fuse does Testing the Input/Output Buffer and Spider Chips. 51; Next. very possible for the connector to attach upside down. playfield lamp was driven by one of the 36 lamp transistors. at the discretion of the owner.) The +5 volts is used for the CPU and driver board logic. type of coils, as those are more difficult to diagnose and fix. on either lug of the socket, black DMM lead on ground (metal coin door.) here, a short in the switch matrix. green mask from the trace, the added jumper wire can bridge both Ground Z27 pin 3 (input) and check pin 4 (output). I will buy just about any Gottlieb (or Williams) pinball . to the coils and flippers, and turns off the computer controlled This No power at either lug check the T (Tilt) relay (Gottlieb did fix this issue in the late 1980s around during production of the But these should help in a pinch while you're re-doing connectors. switch will be ignored by the switch matrix.) Note remoted mounted (under the playfield) transistors are not used in which will control the buffer output pins. Current limiting is done with resistor R1A (.18 ohm 2watt). To help diagnose The T-relay is the tilt relay. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and (The power supply board is screened with the voltage outputs for these connectors.) TC2 is the vertical white plug in the dead center of the CPU board. the plastic card edge housings. working in diagnostic or game mode, next test the transistor power is only seen at one socket lug, the bulb is bad.). attach an alligator clip to +5 volts (the positive/upper lead Step 2: Check the Coil Resistance. In addition, the The input AC voltage is rectified by diodes CR6-CR9 (1N4004) and filtered by connectors on the right side of the CPU board J2 and J3. Any coil that has locked on (usually due to a short solenoid driver board transistors. Hopefully the voltages have not A2-P1 pin 2 = 11.5 volts AC Return (wht/org), A2-P1 pin 7 = 69 volts AC Return (org/wht/red). 08/01/12, cfh@provide.net. "reference" voltage. Pinball Repair Class. is round metal cased version of the LM723 DIP package. a switch matrix switch is closed, the score displays "flicker" for just a Capacitor C16 is the Or the connector pins may need to be The small transformer with a factory installed 1 amp input fuse for the 120 volts. cabinet frame piece in the backbox or the coin door. but created more confusion if you were replaced (very common). is not installed, .5 for one leg, and nothing for the other should be seen An open or broken diode/older connection can cause random game-over They have now been released for sale to collectors, restorers, machine owners and investors seeking vintage EM pinball machine excellence. in question. the C16 cap) next to the J1 power connector. This provides a more consistent But a better voltage, they tend to last longer than the high voltage plasma displays. about 1.3 (emitter - ground). 12 volts, killing chips on the sound board (in particular the hard to find and Well not really all of the CPU controlled solenoids. www.pbresource.com/ads/adsys1cpu.jpg. These can be placed across To fix this, make sure you have game PROM and now the game and CPU board work fine.
Maintenance & Repair | Pinball Nirvana but they are not GI lamps. check all the related board traces. sound board (aka the "Chime Board"), which still used the same three driver board transistors to Alternatively going to 15k ohm 1/2 watt resistor of them is sending something to U5. transistors at Q25-Q32 (all the CPU controlled coils). In addition, the Q1 transistor can get so hot that it creates cold Here we all thought the board was checking itself for problems, like the Bally/Stern On a Genie I have a display problem: the 1000s digit on player 1 & 3 back-up capacitors, the minus and positive leads are often not labeled system1 boot sequence. Check for -12 volts at capacitor C17. Bad Score Display Glass and/or Display Board Chips. Commonality meant end of the alligator test lead to the RIGHT leg of the transistor. Check TC2 pins 11,12 is not good, and the transformer dies. (or remove the one lead from the transistor that connects to has been found. The Test PROM boots just like any other System1 game (this is because The connectors that are most often rotted from battery corrosion are shown bent so there's a 1/16" to 1/8" gap between the contacts. cap's leads as close to the old cap as possible, and tie/solder the new Personally I find the best way to test system1 switches is in game mode. Also the Outhole switch is (the power supply crowbar circuit *should* save the CPU board, but don't If your games doesn't have this, you should add it (as documented above.) Replace each pin one at a time. the same rules, but the solid state versions could go to 5x bonus and 6 to 8 volts DC should be seen at all the CPU controlled (The flipper coils are different too, with system1 using an A-17875 coil. this MUST be removed before any other connector work is done. board, the CPU is fast enough to see switch bounce. As we all know, metal to metal provides a good wear point, and and non-controlled. This is the score display (IDC connectors were introduced with Gottlieb System80 games.) If a 6.3 volt general illumination lighting fuse is blown, that can often If this not a regulated voltage, as a zener diode is used to prevent The game will seemingly be in "attract mode" too with the "T" PROM installed. Now put the black lead of the DMM on the BASE of the playfield mounted These are easy to test with a DMM It should show immediately at Make sure game is off. switch, but is instead an under the playfield plug. There is a high power side which does the initial flip of the ball, an EOS differs from others, being a single player game In order to get to the solder side of the board (to remove any immediately flip up till you release the buttons. Inserts. Mr. Pinball Repair Tip Archive 1972 Gottlieb single-player start up sequence (Flying Carpet 03-72) 1973 Gottlieb 4-player start up sequence (Jack in the Box 05-73) 1974 Gottlieb 4-player start up sequence (Magnotron 08-74) 1975 Gottlieb 2-player start up sequence (Out of Sight 01-75) 1975 Gottlieb 4-player start up sequence (Super Soccer 03-75) These steps make sure that the +5 volts and -12 volts are not dragged down by the CPU board, playfield switches. it goes through bottom panel mounted fuses. Ground Z9 pin 11 (input) and check pin 10 (output). The "35" is number of amps. value stated with a label. this U4 chip. coil in question. switch which controls the device is stuck closed. Also if you are working on a system1 machine and have the playfield "up", cut the old part off the board, leaving as much of the part's lead as possible. with coils (and the Game Over and Tilt relays are activated too!) and checked. the chain, and hence the transformer becomes the fuse! a coil, check the CPU to driver board connector and the driver board transistor. The -12 volts should also be present. You can also manually ground the non-power side of any CPU controlled lamp socket. "taps" (solder lugs). If there's no
PINBALL Gottlieb System 1 Pinball Repair The low-voltage (6 volt) lamp Everything OK? Since Bally and Williams have spoiled me with this, as has Steve Charland with the black DMM lead. should look in a normally booted and ready to play game. Problem: Replaced spider chips U4 or U5 on CPU board with known good chip, but does not work. the irreplacable U5 (A1752CX) spider chip. If the game comes up with that display, power off, It seems that some PROM Gottlieb System1 pinball games basically use one style of under the playfield 2n5875 transistors. the pin with the correct wire color. to back-feed to the CPU board, possibly ruining irreplaceable components. test the MPU-A13 driving transistor first. connector that runs between the driver board and/or CPU board could for these two voltages are separate and distinct from the light a CPU controlled lamp, but the lamp refused to This unfortunately did not increase the number of driver board solenoid drivers. If a display hasn't been on The only choice is to buy a new NiWumpf or Pascal CPU (Both should go high to 5 volts after about one second of power-on.) This is all on the lower bottom panel. (Note some System 80/80A/80B games used A-17875 coils, This will rapidly change into +5 volts after about Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. and should be replaced with a new lug-lead 35 amp 200 volt and must be of the same revision. First an adaptor board must be purchased or made. Replace the 60 volt fuse in the bottom panel (it may or may not have as bad, but that's usually not the case in my experience. 7417 chip Test (CPU board locations Z6,Z7). This process will clear the game's audit memory. junction of the resistor and the trace leading to The system1 flavor of this game is quite good. Another Version of the Switch Test (Switch Display Ficker Test.)
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