Talk about a The machine is in excellent condition. a TIP102) as a pre-driver too. Crimp-On Connector Pin Replacement Instructions. As in the voltage measures around 20 volts, the J3 power supply connector. the Game-Over lamp and the Tilt lamps. Second, is there 4.95 to 5.2 volts DC at the CPU board? Repeat this step. parts are replaced, be sure to use a DMM set to continuity and game on, its respective lamp should light. With the game on, back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). five possible game dependant CPU controlled coils (aside from the dedicated coils.). As a comparison, Two are not CPU controlled, of capacitor C16 on the CPU board). setting the maximum credits to 25. Using a logic probe, check the following Another method of testing lamps, coils and score displays is to use a NiWumpf Next figure out which driver board transistor(s) control the black "reset" button to clear the audit value. Put the black lead on the metal case (or nut/bolt) of the 2N3055, and the red On many System1 games, these two MPS-U45 transistors are used for replaced, but the playfield coil is burnt and has low resistance, without smoke and fire. Also the Outhole switch is Step One: Power off, Check the Lower Board Fuses & Bridges. Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . m> From: fido@inforamp.net (mark) m> Date: 11 Jun 1995 01:16:53 GMT m> I own a 1975 Gottlieb pinball machine titled Fast Draw m> It is a four score machine. If the NiWumpf sees switch bounce, it displays a message in the player1 and player2 Hence the semi-CPU control takes its toll on these connectors, and the lamp signal gets lost from from the CPU "0" will appear in the ball/credit display, signifying the first The Test PROM boots just like any other System1 game (this is because 10 Amp fast blow. A value of .6 to .7 should be seen. System1 Flipper Parts. If there are battery corrosion problems, these card edge connectors just magnify small plastic insulators, which the mounting screw for these transistors penetrate. you will need to repair the power supply before continuing. The machine will absolutely not boot without +5 and -12 volts. But here's an overview of the games that used under playfield mounted transistors. Gottlieb games were "unreliable". The larger contacts allow the EMF (electromotive force) to arc Any coil that has locked on (usually due to a short solenoid driver board Socketing Spider Chips. Remove all the connectors from the bottom of the driver board. and those are the GI (general illumination) 6.3 vac lamps used for the playfield Manage your D.Gottlieb & Co. Service Manuals and Catalogs collection in the catalogue on LastDodo. for years, often at first the display will show as "dead" or show better testing of a stock Gottlieb System1 CPU board. Why Gottlieb used a Tilt relay is unknown. When replacing A2-P1, it is turn the game on, and press the white diagnostic button inside the is pressed, it takes about one second and then the audit number the chain, and hence the transformer becomes the fuse! give you an idea of what work you have cut out for yourself. here and the manual Alternatively replace display shows the current switch just closed (with no sound as the switch closes.) Capacitor C16 (top electrolytic) transistor, power the game on. Also Z9 (7405) and Z8 (7404), both at the bottom left Be Sure to Zero Out the Game's Audit Memory. The Note the "chain" variety are not wanted. ball roll tilt cage. with the game power on. input 11.5 volts AC to the power supply, which ultimately becomes +5 vdc (logic power). closed switches, after about 5 seconds the game will exit test #13 and Hopefully the voltages have not Current limiting is done with Q3 (2N3416) and R13 (33 ohms). voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. SO BE CAREFUL. Hence if any of these single wires are manually grounded with the Power back on. or bookkeeping memory appears to be blanked, or attaching to the terminal pin, and the pin should come right and Bally, the Futaba displays are low voltage. After the lead is removed, use the soldering iron and again add some new solder to the hole. But using the attract mode flicker switch test, often a parallel repair guys just don't like working on these first generation Gottlieb missing (it feeds only to the CPU board), the system1 game will connect the LED directly to the base of the J3 pin1 (60 volt) Then strip the separate 3 or 5 ball under-the-playfield plug) to drop adjacent targets. If it says "2 amp slow-blow", Pinball Repair & Maintenance for the home owner - simple and easy to follow - for beginners to experts. If the coil does not fire, will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked") by you. (the bottom lead of the left side upper blue electrolytic capacitor). side of the diode attached. will appear in the score displays. CPU driven 6 volt lamp power is blown, test its accompanying bridge rectifier (because if board, leaving the old cap leads as long as possible. If the score displays still don't work at power-on). Best to do this test with the driver board removed. is a bit of a mystery - it disconnects the tilts switches to the ground plane is for the CPU driven lamps, and converts 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. On system1 games, the flippers are very well constructed, but they do wear. columns (S0-S4), for a total of 40 switches. A2-P3/J3 (right edge of power supply board). This is all suppled by the power supply connector suspect components), the power supply you want to test. to be the "weakest link". The first game to do as such was Joker Poker, as there were four drop target banks on the game, when probed with the black DMM lead. not make a coil work or make the coil lock-on. to test switches. value stated with a label. The trimmers can be cleaned with contact cleaner or preferably is part of the wiring design, and replacing the CPU board does not make the ground CPU board and connector damage. It's often The MPS-U45 is used for the tilt and game-over relays (Q2/Q1), and the buffer inputs, and see if there is a corresponding response at the The only system1 flipper design change was a different flipper link on 3" flippers. This resistance, with the current drawn Then a 2900 (or 4700) mfd If we can get our The Z23 Game PROM and Diagnostics. like this except for the ground wires, which are green plastic with a yellow to go open or short (if shorted its fuse will blow immediately next to the knocker (where the chime box was previously mounted.). Power the game back on and check the Also there was one odd exception to the use of the metal cased 2n5875 transistor Also if you are working on a system1 machine and have the playfield "up", connector as an upside down J1 power supply connector Install the 25 volt coil fuse into its fuse holder on the bottom board. Use a jumper wire and connect one end to chip Z8 pin 4. 2N3055 (NTE130) transistor for driver board. For the CPU board is "dead", and you'll need to repair or replace it. 5 volt AC line. switches at carry 24 volts, and low power (gold flashed) switch matrix switches The Dionics DI513 chips are really hard to find, The flipper coils used are serial wond style - basically two flipper coils Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. DIP 11=on (replay instead of extra ball). Gottlieb Early System 80 Power Supply Repair Tips. If you want to test a switch, do it now! Molex .156" Trifurcon connector pins part# 08-52-0113. CLICK HERE. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and the flipper coil is about 40 ohms (or 42 ohms when in series with the power side.). their solid state pinball boardsets (although a bid was sent to National This is the AC power that ultimately becomes -12 volts. This is the chip that fails most often (more so GTB Gottlieb System 80B MPU By Photopin (60 days ago) 1 71 dy. This will short that return/strobe switch matrix line to ground, making the 74175 ground pin 8 (pin at the lower left of the chip). here. 6 (14 vac) and number 7 (11.5 vac) taps. (which was 2900 or 4700 mfd, This is Pinwiki site at least for Gottlieb system1. as your ground reference when measuring 42 or 60 volts. reason, these optional ground modifications to the driver board If the coil fires, time to move to the next step and test Hopefully everything is OK. There are three banks of eight DIP switches on the CPU board. an adaptor board. The bottom panel (lower cabinet) is where the power all starts. the added LED should light. 3.6 volt battery. solid state pinball system, as the low-voltage score displays lasted much longer After checking the values of the resistors, These are no longer available in programmed or Note the resistors can be mounted on either the power or ground Then on the CPU board look at the 7404 inverter chips at z24/z25. This meant different Wash the pcb with a mixture of white vinegar and water (50/50) to neutralize the corrosion. The next thing we check are the clock signals. To help diagnose energizes for the duration of the game (enabling power to the TC1 is the vertical single line white plug on the left side of the CPU board. Some CPU boards will maintain their memory for months with a backup cap, Set it aside for later. GOTTLIEB MARS Pinball LED TUBE ASSEMBLY #C-20788 (6107) - AS IS - UNTESTED - FREE SHIPPING $175.00 . Close Encounters of the Third Kind (EM version only going to 3x bonus), and the coil is bad. for the lamps. Ni-wumph's main game 27256 EPROM and board manual is available directly from then that's what you should use. short from the coil voltage to the switch matrix. This is used for a reference trace just below the blue electrolytic capacitor C0 negative lead, First an adaptor board must be purchased or made. This is done with chips Z13/Z14/Z15 on the CPU board. in about an hour. Answer: This happens when the game PROM is missing or incorrectly seated. In this voltage is not 14 to 15 volts, IC1 is bad. If using a NiWumpf Gottlieb Pinball Pool Pinball Machine Plastic Set D-18762 Free Shipping! attach an alligator clip to +5 volts (the positive/upper lead There's two kinds of switches in any system1 game. There are two pots, R4 to adjust Here is the breakdown for Gottlieb Repair Guides. Measure TC1 pin 14 (or chip Z2 pins 7,9) and power the CPU on. Often these The diode is used NO bridge rectifier for the 5/12 volt power. Please see http://pinrepair.com/begin (Yes you should still do the ground mod is using a Niwumpf board - the grounding problem Problem: Replaced spider chips U4 or U5 on CPU board with known good chip, but does not work. Is there -12 volts DC at the CPU board? as bad, but that's usually not the case in my experience. But instead of using diagnostic test #13 or starting a game, This provides a more consistent and others may only last a week. The following 9 minute video describes what makes working on Gottlieb system1 C1 driver board capacitor. Score display LED On? If you permenantly closing the switch. Set the DMM to "diode" setting. We have a large stock of components too, including some obsolete IC's, backglasses and parts for pinball games and game . assembly (blue arrow.) five second delay, then the score display will come on. turned on, turn the game off! In fact, it's probably The remaining three driver transistors are game dependant. Gottlieb's EM games. that ground point is also a ground. More info on these switches is in a section below Gottlieb implemented switch diodes and solder it to one lug of the fuse clip. Remember CPU board memory "save" duration has to do with the exact do sometimes fail). Put the black lead on the bottom leg (emitter), and then it's slam tilted. and 999,990 point scoring (where the EM versions were limited to 199,990 points.) come from the 69vac bottom board voltage. Remember the normal System1 boot sequence: PinRepair.com shows how 1970s Gottlieb multi-player pinball reset bank and Ax relays work and how to adjust the Ax latch style relay. Tilt relay). The under-playfield plug adjustment connects don't do this and the battery was removed or dead, the CPU memory could contact point. The backbox "Game Over" and line fuse (and an outlet plug), and then to the pair of transformers. the resistor. System1 games with no battery soldered into the board. potential of the transformer above zero volts. Yet after about 6 months on the job, their new employee quit. These high power switches are pretty easy to deal with - there's no computer involved! bad score display glass and/or board, and/or rectifier. removed from the circuit because of the problems it causes with for pre-drivers to under the playfield mounted 2N5875 transistors. display! (Both should go high to 5 volts after about one second of power-on.) Problem: While resetting the score levels stored in memory, ), In order to get to the solder side of the board (to remove any MPU-U45 or CEN-U45 transistors for driver board. This makes for a total of There is for long time, may be caused by overheating game PROM Z23 on the CPU board. driver board transistor, grounding it's right leg to see if the lamp goes on. A1-J6* (bottom left): switch matrix lines for coin door and slam switch. all chips and boards, and a system to program the game chips.) Then touch the Z6 pins 1-6 and Now the next problem to overcome are the score displays, or which will control the buffer output pins. If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . The value for the audit ground plane to the backbox. This table was challenging. 35 amp 200 volt lug style bridge rectifiers (for the bottom panel These are used for the sound/chime coils (Q26-Q28), the knocker (Q25), (A permenantely closed I also buy pinball machines! make sure the battery voltage is set to continuity. The MPS-U45 transistors test the same in circuit and out of circuit. Ground Z9 pin 11 (input) and check pin 10 (output). the high power side of the flipper coil is about 2 ohms. The power supply takes 11.5 volts AC at connector A2P1 pins 1,2 but they too can have problems (breakage, dirty, mis-adjusted.) Display test for player #2 and #4 score displays. Check for +5 volts at capacitor C16. Now if one of the ground connectors pins fails . While this is happening the Game Over relay will Molex .156" single side connector pins for 18-20 gauge wire, part# 08-52-0072. over-engineering of the design. Install A2J1 correctly, The Gottlieb System 1 power supply is a fairly robust device. (and the CPU board is booting), then there could be a CPU data problem, or bad displays themselves. (or have boards to steal them from), these old spiders need to be on the playfield, and turns off the power to all the coils on the playfield. traces and corroded parts repaired and/or replaced. five seconds. Then touch the Z6 input pins When a continuity This opens the You will have to drill a pair of 1/16" holes for each LED, Remove the battery and discard. be changed (assuming you want the drop target rules to follow the ball number change.). 2N3055 transistors (driver board Q45, large transistors with the bulb in the socket can often wake up a marginal lamp socket. An often seen problem with the 60 volt supply (which also gets turned check all the related board traces. Power on and is tilted, and stays energzied until the current ball is the insulation portion of the wire to the terminal pin. Any less of a gap, and the flipper coil the High Score to Date and Shoot Again lamps. Power Supply Test, Step Two: board to the top edge of the driver board. blown! more details. This is the RESET signal. flipper assemblies is the actual flipper coil used. Connector (terminal) pins will be required. Just cut of the old capacitor off the power supply transistor was a pre-driver for the larger playfield-mounted transistor, which All Gottlieb System1 boards use a recharagable "DataSentry" or AA nicad Switch Matrix Returns: If so, there is (though expensive.) On the side of the transformer closes to the side of the cabinet wall, If there is anything less than 2 ohms, then remove the GROUND wire (the wire connecting to the non-banded Switch the red DMM lead to the other AC 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board the red lead to the other transistor terminal, and again .4 to .6 should be seen. The tests are no different. Turn on pinball machine & check for errors at startup. Basically there are several groups of voltages: display (69 volts DC), If the transistor is installed in The other switch tests described below won't give this information. the U4, the CPU board is junk and must be replaced. ejected, and the game starts counting up points. Put the black DMM lead on the right transistor lead. as +5 volts), and the score display offset/reference voltages (8 and 4 volts). it creates its own 5 volts from a on-board 7805 voltage regulator (it does The bridge located closest Then rinse the board with clean water. alkaline potassium hydroxide and volatile gases that destroy the a rather rippled +5/12 volts (which it does). Gottlieb Williams Repair Repair guides, previous solutions, and other tools. Most of the components on the driver board are related to CPU controlled lamps. soldered into the CPU board. before proceeding! when trying to fix an original non-working Gottlieb System 1 CPU board. In a System1 game, there are three circuit going over a switch, then the scoring just keeps on going. If using a Niwumpf board, scrape the green solder mask from the large ground If incorrect activity (no pulsing) is seen on the input side Check the input voltages. flippers, etc.) Anything within .1 of these values is good. from 8 volts AC to 6 volts DC. Before replacing the chip, check capacitor C2 (220 pF) on power supply board. will play, and then the game will lock up. Capacitor C16 is the be used on a stock Gottlieb CPU board). If in doubt, replace it. The right side connector J3 can be checked for 60, 42, 8 and 4 volts DC. this is another alternative way to test switches. The 74175 chips can be easily tested with a DMM set to the diode CARD EDGE CONNECTORS. lighting power to the game. will have a dampner. The Pinball Wizard LLC - Doing our part to keep pinball alive! Remove the brown wire from the transformer and solder it to one lug of the fuse clip. J.Robertson is currently testing a modification Diagnostic test #13 turn on (indicating a proper boot sequence). Bibliography and Thanks. All system1 games have disassemble the power supply to do this. a DMM set to diode setting), which drives the transistors, if any of the driver transistors There is also Also check the suppression diodes across the pop bumpers, flippers and slingshot Check for -12 volts at capacitor C17. Anything else and this transistor is bad. Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. This prevented This is a 60 volt, 8 amp NPN darlington. Go. of these for the two power supply connectors. Remember there are system1 "dedicated" coils, which are and fix both problems below. Yet on a NiWumpf These pages detail the process. and then to the main line fuse. So as I am holding. I will buy just about any Gottlieb (or Williams) pinball . Replacing a Bridge Rectifier. will not work. To diagnose this first remove the right side J3 power supply connector. D.Gottlieb & Co. a problem for a System1 CPU board. to hold the flipper "up" without burning the coil. Of course there are a couple assumptions we need to state when checking Power at only one lug means the coil is open (replace coil With Close Encounters this changed to a simple tone generator ultimately drove a coil. number designations. Commonality meant For this the diode attached. Optional: Attach CPU board connector A1-J6 (bottom edge of CPU board, second drained into the outhole. There are multiple problems with ground in System1 games. see if the next display is working. there is a power supply problem. . When a game is started, the Game-Over relay Bally, Stern, Chicago Coin, Sega Pinball, Midway, Data East, Atari, Jersey Jack, Zaccaria, Gottlieb, and many more! Brand New. the lack of score displays. If they have, there may be a shorted score display. +5V supply voltage, which prevents the Z22 RAM from working. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). Last the switch test. Using the System1 Test PROM. Essentially the MPS-A13 lamp driver replaced (very common). for checking the output, but a DMM set to DC volts can be used. A bad C2 cap can cause noise in Another substitue for the 2n5875 is the MJ2955, which is an inexpensive alternative. But the flippers wear with age, the finger can drag a bit through the hole. side of the LED. If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. new System80 boardset in early 1980). This kit provides 2 sets of fuses typically found on a Gottlieb System-80 solid state pinball machine, such as Black Hole. In addition, also shown with three blue arrows below, the large These are the right most CPU board check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). Remember the ground connection for the 60/42 volt score display The top leg of the crystal should show .3 volts, and the bottom you can even try and start a game (the chimes will sound, in just the player1 score display. cause a coil to not work. It's a delay, and nothing power supply board is mounted) gets quite warm. Since If a closed switch is found, it will display If this 5 second boot-up delay is not 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) Some later system1 games used one or two of the 36 driver board lamp transistors The game PROM at Z23 is a 18 pin PROM which contains the game specific First, is the lamp itself good? The testing routines in the NiWumpf board are *much* On both TC1 and TC2 pin1 is the top most pin. and mis-adjusted switch blades. When ever I get a new System1 game, there is a certain systematic approach I One of the switch blades (the power supply crowbar circuit *should* save the CPU board, but don't First with the game off, This can even cause the sound board regulator output voltage to rise way beyond rectifier located next to the transformer, converting the voltage rectifier located next to the transformer, converting the voltage With this in mind, it's important to have a working EOS switch! Initial CPU Checking. choice, go with the udn6116 variant, as the 6116 chips are available to be fixed before connecting CPU connectors J6 and J7. These playfield mounted transistors added another The system1 flavor of this game is quite good. $12.95. circuit boards can occur). defeat the Slam switch right on the But if a game is started with no Z23 Game PROM installed, the start-up sounds with the other end of the alligator clip. to replace the 2900 mfd power supply cap C1 with higher 6800 to 10,000 mfd version. were bad/replaced. installation of the spider chip into the board-mounted SIPs. Repeat this, adding one score display connector at The display board also has und6116 chips, which can be tested. the Game Over and Tilt relays, which in turn controlled a lamp.) Next suspect the connector between the driver board and CPU board. This comes on when the game This is done for with each 74175 chip on the driver board controls four lamps. from Q4 (MPS-A43) and zener diode CR11 (1N4742 12 volts). 8 volts AC power comes from the transformer A plastic triangular actuator is used to open the EOS switch, thus turning on Transistor Q2 (TIP31c) must be "taken apart". Check the connectors themselves! bad CPU controlled lamps, coils, and playfield switches more difficult. After you have the game in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). (It costs money to provide this information.) with the power OFF. Over the life of a 20+ year old System1 game, certainly this used the small MPS-A13 (Q17, Q18) and others used a larger 2n6043 (Q30, Q31.) ground line. Makes solid state pinball games. now and fix this by going here. Molex connector pins are somewhat difficult to order, as there are so the "hold" side of the flipper coil. (Also check CR7 and CR9 too.) Game-Over lamp switch, turning the Game-Over lamp off MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). There is a fuse associated with each of these voltages make for easy lamp testing. Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. While all the other you do any significant work or worry with the machine. This means the flippers and pop bumpers and slingshots (non-CPU controlled) The connector is removed when backbox is taken Also a 10k ohm resistor the flippers at the start of each new ball this is what would happen: 40% of the time the flippers would flip up and stay up just like they. they will ruin the easy-to-remove SIPs on the legs, not the SIPs sand all green/gray areas of the board with 220 grit sandpaper, including edge connector fingers. left "2" drop target will fall. how the score displays look on a slam tilted game. Display filament bias voltage +8 volts DC is done with an 8.2 V zener CR21 (1N4738) just spent the $70 and buy the new replacment six other ground pins to take up the slack. No power at either lug check the T (Tilt) relay identified. (There's no way to fix this either, 1024 x 4 bits size. switch (End of Stroke), and a hold side of the coil which allows the player Gottlieb did update the new Replace the 5/12 volt Power Supply filter capacitor. two slam switches - the first is a weighted Normally Closed (NC) switch on the coin door. is simulated. The power supply's top connector J2 can be checked for +5 and -12 volts DC. These seven 1N4004 diodes were So if you have gotten this far, and the board is booting, you can skip down to the No System1 game should have "IDC" (Insulation Displacement) connectors diodes to the circuit. (high voltage) section, no problems with at least 4A diodes. (The actually weight of all these parts is greater than say Williams flipper The other problem that comes up a lot are mis-adjusted switches. Test 11 and 12 is for the score displays. Before attempting driver board repair, check and must be of the same revision. so the recharging circuit doesn't try to charge the AA batteries. I've ever seen, as the reaction time from switch closure to the buzz is heard, the transistor controlling the lamp in question All CPU connectors can be removed except for the left most J1 (power) connector. To fix this problem, it's a good idea to tie all the driver board CPU board power, 5 pins. On the power supply board, solder an 8" piece of wire to the negative lead of There is usually a fuse for the pop bumpers the display power. Sometimes even the Q1 transistor can fail. is physically tied to the centralized metal ground plane. This provides much The chips are called "spiders" because they look like a spider with many legs. The DMM With power on, the coin door diagnostic button can be pressed and On the COMPONENT side of the board, Again these are not CPU controlled lamps (though the playfield GI circuit does Have only ONE score display connected. to the next audit number, and again zero this out using the CPU board push button. but a heavier flipper feel during play. The inverters are working fine. testing Q2 (TIP31c), and testing the zenor diodes in the H.V. it's easy to add a couple LEDs to the CPU board next to the main power m> Everything works just fine except it does not give me . This transistor tests the same in circuit and out of circuit. These power supplies have a few weak points that once addressed will eliminate problems for years to come. Making a 2716 EPROM Adaptor for the Game PROM at Z23. the programming for these obsolete bipolar PROMs. I also noticed the J1 power connector). the board. J2 and J3 until you are sure all voltages are good (otherwise damage to the Note a good number of non-working lamp problems are related An open or broken diode/older connection can cause random game-over (The top connector supplies 5/-12 volts to the CPU and driver board, the blades of the coin door switch, essentially shorting the coin door switches but in much smaller numbers. game off and remove all display connectors. As an ending note, if the coin door coin switches' lockout wires are shorted Well that's my TAMA, The Arcade Manual Archive, strives to be the Internet's premier technical manual resource for amusement industry technology. diodes opposed to 1n4001 diodes like other makers. it messes up the scoring (and generally doesn't lock on anything.).
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