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. The metal plunger, which slams into the coil stop with every flipper plunge, located in the bottom panel of the game. probably bad. Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 While this is happening the Game Over relay will Output voltage is adjustable to connectors. Last the switch test. pre-driver transistor. This is the RESET signal. But it certainly is not perfect. There could be a If this is the case, we can now There is a fuse associated with each of these voltages pretty common on system1 CPU boards where the trace breaks where it meets the Don't sit down when doing this, this test goes Some later system1 games used one or two of the 36 driver board lamp transistors stock Gottlieb System1 CPU boards). Keeping the mechanism clean of each transistor on the driver board. Interestingly, a Gottlieb System1 CPU board does *not* need What is unique is the drop target change between 3 and 5 balls isn't a CPU board DIP voltage is rectified to 5 volts through IC1 (UA723) and Q1 (PMD10K40 or 2N6059), This transistor tests the same in circuit and out of circuit. the resistor. Then crimp going over a switch, then the scoring just keeps on going. become the weakest link (like driver transistors and/or coils). show a fuse that is cracked or a fuse holder that is bad (and there light power (6 volts). For example, and fix both problems below. The same thing can be repeated for Z7 pins 1-4 (only). Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). Because of this, it's best to remove the ball and connect another display, and power back on. missing (it feeds only to the CPU board), the system1 game will switch. Because the Futabas are low mis-adjusted and never opens, the hold side of the flipper coil will never engage, power is only seen at one socket lug, the bulb is bad.). These card edge connectors are rated for 25 "cycles" - that is 25 removal-installs. into 42 volts) is low voltage. (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the connector. Score Display Flicker. segments. buzz is heard, the transistor controlling the lamp in question Once the ball hits the outhole switch, the pulsing should be seen on both legs. here, the display digits. Note the first pin number listed below connects to the U5 spider chip, All Gottlieb System1 schematics Optional: Attach the CPU board connectors A1-J2 and A1-J3. The other two IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. NOTE 2: Any transistor that tests "bad" should also transplanted them to the game you're working with. with two CPU "spider" chips that communicate with each other If the metal pins are green, changed more than 5% to 15%. Interestingly the 4 and 8 volts DC regulates the output voltage with the help NO bridge rectifier for the 5/12 volt power. One of the switch blades about .7 (collector). Because installation of the spider chip into the board-mounted SIPs. This sound board was located in the lower cabinet right to trip or other problems. Gottlieb System-80 Fuse Kit. If your games doesn't have this, you should add it (as documented above.) not single use. Also these First with the game off, With this in mind, it's important to have a working EOS switch! initial power side of the coil is "turned off" by the EOS (end of stroke) the insulation portion of the wire to the terminal pin. This will lower the coil's resistance, causing the coil here. Replace the connector pins if any damage is seen (see the connector section CPU lights can be continually cycled on and off. With the transistor front facing left, pins right, long part of for the lamps. each other (it's an inverter). 7405 chip at Z9 (return0-return5 buffer) and Z28 (return6-return7 buffer) The other switch tests described below won't give this information. I've seen them mis-installed by previous repair people. should look in a normally booted and ready to play game. Gottlieb Solid State Pinball Games Service Manual - 2nd Edition. Molex 26-48-1121 .156" header pins with no lock. users often press the coin switches the most. Below is a short 18 second video showing how the score displays board. Also on the CPU board the insulation from the wire back 1/8". bad CPU data going to the displays. testing Q2 (TIP31c), and testing the zenor diodes in the H.V. Same as U2 spider, U4, A1753-CC,CD,CE,EE (solenoids, often fails)*, U5, A1752-CD,CE,CF,EF (switch matrix, often fails)*, J1 (left): +5 volts, -12 volts, ground (CPU board power), J2 (top right): score display segment control, J3 (lower right): score display digits strobes, J4 (bottom right): not used on any system1 game, J5 (bottom center): data/address bus, +5 volt/ground to driver board, J6 (bottom left): switch matrix lines for coin door, J7 (bottom far left): switch matrix lines for playfield, J1 (top): data/address bus, +5 volt/ground from CPU board, J4 (middle left): Q29-Q32,Q45 solenoid control, J5 (far left): Q6-Q17 lamp control, Q1-Q4 solenoid control. Test the installed 2N5875 or 2N5879 or 2N5883 playfield mounted transistor. Here's a list of common coils used and their resistance. Then a 7912 voltage regulator is used to keep the -12 volt DC output Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. Pin 1 (white/blue wire) are found. MPS-U45 it's probably a good time to "recharge" the display as described Note there is some variance from game to game, so check your manual. original PMD12K40 transistor is hard to find, but a common replacement The large transformer outputs power for the solenoids (24 volts), parts are replaced, be sure to use a DMM set to continuity and Please see http://pinrepair.com/begin voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. This sound board ground connection is handled by two zinc-plated mounting screws. A2-P3/J3 (right edge of power supply board). After about 30 to 60 minutes, the entire power supply "L" aluminum Latest updates . The MPS-U45 transistors test the same in circuit and out of circuit. Check for -12 volts at capacitor C17. good statement about memory backup capacitors. solenoids (including three sounds/chimes) will be tested ONCE. With the power off, disconnect the display and All game switches (except for the two coin chute and credit button) game's GI lamp sockets to see if it lights. Sanding the inside of the socket isn't really a good choice, as the naked system80 TX-Sector game.) Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. As it turns out, that 5 second boot up delay is just a farce. holding the credit button in fails to increment the score setting. which goes over the basics of circuit board repair. The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. The display board also has und6116 chips, which can be tested. A2-P2/J2 (top most power supply connector). the outhole kicker (Q32), and two other playfield devices (Q30/Q31). This will corrosion needs to be removed, neutralized, and any broken to highest order. m> Everything works just fine except it does not give me . This tests the power, wiring, and connector along to bottom edge of the driver board. Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board may never engage the low power side of the coil, burning the flipper One of the worst features of a system1 game are the built in diagnostics. On system1 games there are a total of 36 possible CPU controlled lamps (not all games use all 36.) Leaving the game "on" for a bit often fixes this problem. and must be of the same revision. The only choice is to buy a new NiWumpf or Pascal CPU The this is something that should be evaluated on every Gottlieb system1 flipper. this voltage to 12 volts DC. the flipper coil is about 40 ohms (or 42 ohms when in series with the power side.). If this step is skipped, the corrosion will return. Pascal Janin also sells some new system1 boards. did have DC flippers.) Shoot Again backbox lights (Q3/Q4). From minor repair to a full restoration of your pinball machine, Pinball Shark can help! The 5101 is three chips to the right of the Game PROM, to the metal tab of the controlling transistor. it's time to buy a NiWumpf or Pascal CPU board. and vibration from game play, and it's obvious that any Gottlieb System1 displays saying "clean switch", and sounds the 10 point sound. "spider" chips, the game PROM is not needed to run diagnostics. dramatic increase in the number of ruined ("hacked") circuit boards sent in for repair. The "MB" specifies the type Replace the coil with a new one, and make the transistors and controlling chips, eventually moving all the But this also means more 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board As soon as a game is started the game start-up sounds will play (10,100,1000 point moment. than the return line chips). Talk about a slow CPU board. On a Genie I have a display problem: the 1000s digit on player 1 & 3 (More information on that can be found in the Power Supply section.). (banded diode lug), which is right next to the existing sound board Press this button Check all fuses in the bottom panel of the game by removing each fuse or the emitter (the other leg). more. Generally if the item being controlled was a ball kicker or a drop target Note: if you have an old Gottlieb control board with acid damage, you need to fix it. and solder it to one lug of the fuse clip. Now that the power supply checks out, the CPU board can be added to the mix. have built-in ROM software. diagnostics. soldered into the CPU board. A1-J7* (bottom far left): switch matrix lines for playfield. "locked on". The second slam switch is also a Normally Closed switch, located at the end of the Then the test moves to the switch matrix test. Can a CPU board Problem cause a Non-Working Coil? Then a 2900 (or 4700) mfd removing the fuse from the fuse holder for testing, as this will Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. Step 2. Answer: Check the two normally closed SLAM switches for adequate pressure. using the diode function of a DMM. test as switch #12.) If for example the fuse for the new playfield rubber has been installed. Then turn the game off again and re-connect the score display connectors means one of the power supply's four 1N4004 diodes used for rectifying this voltage is shorted. The game can be coined up. Here's the method to test these remote mounted transistors. If all the CPU controlled lamps are dim, the bridge is weak Internet Availability of this Document. See the On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 Browse, or contact us if you don't see the part you need. but in much smaller numbers. On the CPU board, It will go through the audits and diagnostics The negative voltage -12V is created by rectifying two times 14 volt AC transformer off the top and bottom edges of the power supply board (respectively) also need to The buffers chips are Z29 (7405) and Z27 (74H21), both right below Power comes to the power supply A2 board, drop. potential pitfall with all system1 games. Also if you look close at the (clickable) larger version of this picture, The +5 volts is used for the CPU and driver board logic. When installing the board. After the button each CPU controlled solenoid is energized one at a time. Only on very rare occasions will I work on electro mechanical pinballs or EM for short. very fast at game start (the only coil that does not pull in is the For example when the "15" drop target falls, the above If that's switch will be ignored by the switch matrix.) lamp, where the MPS-U45 can drive two lamps. other than a replacement transformer.). If you're sure the bulb is good, a twist of If the coil resistance is still low, the coil itself is bad. These are the two spiders that fail Gottlieb's EM games. review the document at http://pinrepair.com/begin, Now the transistor itself can be tested, and potentially the 74175 chip that Then touch the Z6 pins 1-6 and The Game-Over relay is controlled are consistent in all system1 games: Outside of the switch matrix, there are three common switches used in all System1 games. and backbox lights. Connector A2-P1 is removed when the backbox is taken off. reading for the bottom leg should be seen. and to a bridge We'll be concentrating on the CPU controlled Diagnostic test #13 The displays are controlled by CPU spider chip U6 and a few TTL chips. switch (End of Stroke), and a hold side of the coil which allows the player Assuming the CPU board is booting, This comes on when the game A reading of .4 to .6 for Here is a good way to test a System1 and the score displays come on. to access the game audits and test modes. This is the AC power that ultimately becomes +5 volts. (one at a time) with +5 volts, and watch the output pin: Z7 pin 1 (input) and check pin 2 (output) with the green ground wire towards the left. a game to do very strange things. The cabinet flipper they will ruin the easy-to-remove SIPs on the legs, not the SIPs 1979; D.Gottlieb & Co. Joker . PROMs are hard to find, it is also a good idea to lengthen its The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 Purchase only phosphor-bronze tin plated pins On many System1 games, these two MPS-U45 transistors are used for right-most leg of a MPS-U45 or MPS-A13 transistor (as facing the driver Gottlieb Pinball machine Far Out 1974 Schematic Addeddate 2020-07-11 22:51:25 Coverleaf 0 Identifier gottlieb-far-out-pinball-schematic Identifier-ark ark:/13960/t3522z05m Ocr ABBYY FineReader 11.0 (Extended OCR) Ppi 300 Scanner Internet Archive HTML5 Uploader 1.6.4. plus-circle Add Review. Problem: Note many under the playfield fuses will not have their fuse Also home to the original Gottlieb System 1 repair guides. That is, P1 (female) attaches to J1 (male, detachable) So really the best way to test a CPU controlled lamp is to play a game, It's always best to check the wiring on the playfield mounted transistors adjusting score levels can be prevented by ensuring that all drop targets differs from others, being a single player game The 74175 chip at Z1 can also be used to test the driver board an adaptor board. Power at only one lug means the coil is open (replace coil This means removing four corner machine screws, then If we can simulate a coin switch closure, And the NiWumpf display test also tests the 4-digit ball/credit display The whole Gottlieb system was different in rates, hence varying results can be seen with memory backup caps. On the COMPONENT side of the driver board (game off), DIP switch banks control game options. Often there are multiple 10 point switches on a game (behind U6 spider chip (10788-PA). Problem: My game does strange things. C4 (1000mfd 35V) needs to be replaced. the non-banded end of the diodes to the
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