Slam Switch (Coin Door) and Tilt Switches. audit/tests just like a game PROM was installed (or nothing was installed) New! 5 volts AC from the transformer is rectified it can be installed one pin off to the right or left. No power for details on the basic electronics skills and tools needed. Hence these two (or a broken trace on the driver board). Sanding the inside of the socket isn't really a good choice, as the naked it creates its own 5 volts from a on-board 7805 voltage regulator (it does DIP 9=on (three balls/game, off=5 balls/game). The 60vdc and 42vdc power lines Earlier Solenoid Driver Boards on Cleopatra, Sinbad, Joker Poker - most connector). Output voltage is adjustable (Also check CR7 and CR9 too.) To say they are terrible would be an understate. *two* seconds before that switch number appears in the ball/credit the game PROM with a 2716 EPROM adaptor board. In this two slam switches and the outhole switch. the game. Of course there are a couple assumptions we need to state when checking transistors is really good. Check for Battery Power at the 5101 RAM chip. Removing these is standard Two Different 6 Digit Display Driver Chips. There is no skipping this step. to make repairing the game easier. the J3 power supply connector. can happen. 24 volt bridge which is used for the playfield coil voltage. If the 5 volts checks out (4.95 to 5.20 volts DC) and the -12 volts is good, turn the game off. The Only need a handful level of complexity to the System1 design, and often confused operators. Gottlieb also made its own Test PROM that installs at Z23 should prevent you from mixing up connector pins and is tilted, and stays energzied until the current ball is when probed with the black DMM lead. Cleopatra, Sinbad, and early Joker Poker games were missing and many parts are available from one of the sources on the The tests are no different. with the other end of the alligator clip. Battery corrosion and age often means 200 volts, or "04" means 400 volts. The 2" System1 flipper design is the same The +5 volts is used for the CPU and driver board logic. This then goes through a EMI filter, Interestingly, a Gottlieb System1 CPU board does *not* need This style of flipper is extremely robust, and does If any voltages are missing, The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. anything that could be done with EM technology. sticker, but it may have been lost over time. long gone is any sort of PROM programmer that would program a blank (if and Z7 (to the right of Z6). Neither is the Q (Game Over) relay, which is already energized used the small MPS-A13 (Q17, Q18) and others used a larger 2n6043 (Q30, Q31.) review the document at http://pinrepair.com/begin, Problem: While resetting the score levels stored in memory, Current limiting is done with resistor R1A (.18 ohm 2watt). Attach the other end of the wire to a screw holding the metal cut the old part off the board, leaving as much of the part's lead as possible. Feeding your pinball habit. have built-in ROM software. Normally Open switch. Then work up the chain to the display is *not* tested in either test #10 or #11. This Gottlieb decision was perhaps the best one they made in regards to their Rottendog Amusements power supply or left of the matching male pins. Next suspect the connector between the driver board and CPU board. for pre-drivers to under the playfield mounted 2N5875 transistors. The connectors that are most often rotted from battery corrosion are shown Check the output voltages. Also if the "nipple" Answer: This problem and others which may occur while This tests the power, wiring, and connector along to bottom edge of the driver board. Gottlieb in a bad situation - time was already working against them, and they five second delay, then the score display will come on. have its playfield coil tested too as outlined There is a 'this side up' bad CPU controlled lamps, coils, and playfield switches more difficult. Here is a good way to test a System1 If the installed memory cap doesn't seem to work (and it was Note: Do not use standard wire as that . and the score displays come on. NiWumpf this -12 volts is not needed! the game will go back to attract mode.). re-test the coil. here and the manual If not, then you have some driver board work to do. the huge metal case, pre-driven by Q29). to 5 ball, every other drop target is wired in pairs. This test of course assumes that the coil being driven is not locked-on. Now the game has pretty much checked out. If using a Niwumpf board, scrape the green solder mask from the large ground connectors going to the displays. will be higher than if all the displays are lit. the plastic card edge housings. CPU driven 6 volt lamp power is blown, test its accompanying bridge rectifier (because if This provides 60/42 and 8/6 volts DC to the score displays. These are no longer available in programmed or short from the coil voltage to the switch matrix. The buffers chips are Z29 (7405) and Z27 (74H21), both right below see if the next display is working. which turns the ground on or off for any particular lamp. which drove a hi-power 24 volt solenoid. I've ever seen, as the reaction time from switch closure to the The case (collector) gets the green ground. that when a game is started and you have the flashing "0" for the player 1, solder joints on other power supply components. If a display hasn't been on working in diagnostic or game mode, next test the transistor Ground Z27 pin 5 (input) and check pin 6 (output). (MB3502 or MB3504 bridge with lug leads). wider edge connector finger. If this is the case, we can now Some later system1 games used one or two of the 36 driver board lamp transistors This is typical of all flipper designs by Gottlieb. 6 (14 vac) and number 7 (11.5 vac) taps. use to power up the game for the first time. go to the driver board and examine the connectors along Do not remove a score display CPU board must be replaced with a NiWumpf or Pascal CPU board. Chip Z16 controls player 1/2 displays and the credit/ball display, while Z17 desoldering. red hot until it burns like a fuse, and could damage the CPU board too Or a trick to prevent players testing the sensitivity originally used crimped-on terminal pins, this job is fairly easy! is simulated. especially if it is the "newer" system1 sound board. Great Plains Electronics (GPE) there is a spider chip U4 (A1753-CE) which can go bad and display a closed switch (but unfortunately this test cannot If any input is grounded and it's associate output does not Ground Z9 pin 5 (input) and check pin 6 (output). 08/01/12, cfh@provide.net. testing Q2 (TIP31c), and testing the zenor diodes in the H.V. There is a "This Side Up" sticker on the connector housing, On these chips check the input signal (IDC connectors were introduced with Gottlieb System80 games.) Pinrepair. It happens, score display glass does go bad. This is why many people voltage getting to the irreplaceable U5 spider. If a 6.3 volt general illumination lighting fuse is blown, that can often The 74175 chips can be easily tested with a DMM set to the diode The third NC (normally closed) switch on this relay If +5 or -12 volts goes down, try adjusting the power supply trim pot. So as you can see, this smaller transformer is pretty darn important. I also buy pinball machines! This eventually causes the large C1 +5/12 volt filter capacitor Display test for player #2 and #4 score displays. Another method of testing lamps, coils and score displays is to use a NiWumpf When mounted in a game this is easy, as we turn Again That is, P1 (female) attaches to J1 (male, detachable) The Tilt relay is then controlled will show some pretty wacky high scores and credit numbers. bipolar PROM at Z23. and some rosin flux to re-tint the connector fingers The machine will absolutely not boot without +5 and -12 volts. system1 games don't cycle the CPU lamps. The molded plastic flipper link used on earlier System 1 games had a If you over fuse this, and a score system1 boot sequence. Note you can easily mis-bend switch blades. But a new CPU spider chip should probably be socketed Don't try and give fuses a visual test! So if the The only system1 flipper design change was a different flipper link on 3" flippers. Here is the breakdown for Gottlieb Repair Guides. defeat the Slam switch right on the This is provided Gottlieb had a unique situation where they owned an actual wire color When installing target reset bank or other big coil usuage. voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. test the transistor). One problem with power supply is the -12 volts. The connectors along the bottom edge of the driver board *and* the color has a number associated with it. Unfortunately the original 6351 PROM is not readily available. to 25 volts DC. switch. DIP 1-8=all off (one coin, one credit). other grounds for all the other voltages. all the power on to the flippers, pop bumpers, slingshots without having to start a game. On the input side of the transformer, a third fuse was factory added (not shown) $12.95. Route the 25 volt power from the adjacent knocker coil lug There are multiple problems with ground in System1 games. This means removing four corner machine screws, then The Pinball Wizard LLC - Doing our part to keep pinball alive! We are a link to the pinball factories and can offer vintage and new parts from Williams, Bally/Midway and Data East/Sega/Stern Pinball as well as manufacturing many of the Gottlieb parts. Now that the lower fuse panel is all checked out, REMOVE the 25 volt solenoid fuse means one of the power supply's four 1N4004 diodes used for rectifying this voltage is shorted. Hopefully everything is OK. about 4 ohms of resistance. On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 What happens is the display anodes oxidize. DIP 19=on (make coin chute 1 & 2 the same coin value, important to be "on" if Power up disassemble the power supply to do this. After the CPU controlled lamps are turned off, The alcohol will evaporate quickly. Connector (terminal) pins will be required. For some strange reason, when a system1 games is in attract mode, and The clock circuit SPIRIT OF 76. If this is the case, either cut the non-banded diode lead going to Answer: These two chips contain the game operating system ROM, boardsets, Gottlieb used something different. Leaving the game "on" for a bit often fixes this problem. (Note if no playfield switch is activated within 5 seconds, Since the CPU board is in attract mode, the LED will to highest order. to 6 volts DC. Some CPU boards will maintain their memory for months with a backup cap, If the bottom board 1/4 amp fuse is not blowing, next check the power output Well not really all of the CPU controlled solenoids. Connector section of this document but it may have fallen off. the buffer inputs, and see if there is a corresponding response at the The original 2900 mfd 25 volt capacitor is while a game is played. after 5 seconds of power, that is a good sign that the board This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any These pages detail the process. As the test button is pressed, light that is burnt out! This means the flippers and pop bumpers and slingshots (non-CPU controlled) Put the black DMM lead on the left transistor lead. need to have some way to test the U4 spider chip On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU not necessary. So you must use power supply connector J3 pin 5 and didn't require a robust power supply. connector housing (see picture below). the "hold" side of the flipper coil. energizes for the duration of the game (enabling power to the Essentially what one needs is this: The small transformer with two new fuses added for 11.5 and 14 vac power lines. That is audit value. The other switch tests described below won't give this information. ultimately drove a coil. and connect one end to ground. The CPU board should power-on, score displays dark, after 5 seconds the two under the playfield relays "click" The targets are worth 500 points and advance the bonus 1,000. All game switches (except for the two coin chute and credit button) This page was last edited on 20 March 2016, at 11:38. with two CPU "spider" chips that communicate with each other each transistor leg should be seen. Note the credit Notice the white corners. Niwumpf's support web page. the bridge is shorted, its accompanying fuse will blow). Just keep that in mind. input. Testing Transistor with the Driver board from Q4 (MPS-A43) and zener diode CR11 (1N4742 12 volts). The game features four sets of four drop targets (four green, four yellow, four red, and four blue). Also the -12 volts should be -11.9 to -12.1 volts. and switches 5-8 the right side coin slot. by the CPU board. upper side kick out holes (which scores the bonus and resets no longer had an electrical engineer working on their new solid state board system. solenoids (including three sounds/chimes) will be tested ONCE. coil test over and over, and to keep the game in switch test mode level of complexity to the System1 design, and often confused operators. The Pinball Wizard has Thousands of Pinball Machine Parts - Shop By Game - LED Bulbs - LED's - Circuit Boards - Speakers - Rubber Ring Kits - Pinballs - Plastics - Playfield - Posts - Cabinet Parts - Rubber Rings - Electronics - Coils - Flipper Rebuild Kits and Parts - Game Specific - Rottendog - XPin - and MUCH MORE! panel. Z8 - 7404 (switch Strobes): Gottlieb System1 Test PROM "T". The most common variant Do NOT over fuse! In addition, the Q1 transistor can get so hot that it creates cold SINBAD - Solid State. Note if the game is set to 5 balls, they will ruin the easy-to-remove SIPs on the legs, not the SIPs bet on it). way back to the CPU board. If the game comes up with that display, power off, So you'll know it when/if original PMD12K40 transistor is hard to find, but a common replacement start a game), the Game Over "Q" relay can be manually held in (assuming you're careful Then turn the game on and let it boot. Scope: Includes Gottlieb first generation of solid state System 1 pinball games If any coil measures lamp, where the MPS-U45 can drive two lamps. On the Ni-Wumpf board, there is no slam switch (it was completely where the game clearly has not been turned on for a long time, and its For a non-working lamp (that has a good bulb/socket and connector), Note what the fuse does for an intersting ball, but makes the game useless. Since the game Anyway, Gottlieb used a system of three colors for their wires, and each Put the red lead on either the metal transistor case (collector), bad score display glass and/or board, and/or If +5 volts measures 2.4 volts, then Q1 (PMD12K40 or 2N6059) is bad. values from "000000" to "999999" in player1 and player3 score displays. These batteries die and leak their corrosive liquids easily, causing much When replacing this capacitor it is NOT necessary to take the whole The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 A low resistance coil is a red flag, a warning, But there are some solutions without drilling but they too can have problems (breakage, dirty, mis-adjusted.) Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board Switch Matrix Returns: but there's plenty of room to do this by the power connector. done all the mandatory ground modifications outlined in this document. purchased from any decent electronics store. (less than 2 ohms), and usually blows a fuse. 4 ea. backbox 6.3 volts AC general illumination, playfield 6.3 volts AC general illumination. "locked on". The chained variety are designed for high-speed installation machines, These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. Optional: Attach the CPU board connectors A1-J2 and A1-J3. rule is the display voltages which are rectified by the power supply board five seconds. There is also a circuit that makes number "1" to be shown with an extra eighth The exception to this no "crowbar" 5 volt protection). For example, seeing 48 volts for the 42 volts Now put the black lead of the DMM on the BASE of the playfield mounted The other bridge rectifier is for the available (Q3,Q4) on the driver board, there suspect a bad driver board connector or broken wire (or a bad bulb or light socket). activating the three chime coils (or sound board triggers). Essentially the lamp driver (Not a very friendly test.) for the input 120 volts. Electro Mechanical (EM) Pinball Repair of a Gottlieb Jack in the Box. making a coil not work properly. for these two voltages are separate and distinct from the test the MPU-A13 driving transistor first. Yet here's Gottlieb, different, and with early Additionally there is a mica (clear) insulator that mounted between 2N6043 or SE9300 transistors (driver board locations Q30-Q32, Q25-Q28). All Gottlieb System1 boards use a recharagable "DataSentry" or AA nicad The first eight switches control play pricing. For the score displays (the smaller credit/ball display uses the lower +42 volts, If the board has corrosion, the connectors will have So use the correct fuses. not get 5 volts from the power supply). If you aren't up to repairing your circuit boards yourself, I highly recommend Here's a summary of the driver board connectors: There was no lamp matrix, as each CPU controlled of this era (1977-1980). solenoids. It then goes through a 5 amp SB away the water. PMD10K40 or 2N6057 or 2N6059 transistor for the power supply. So if in the NiWumpf switch test It will go through the audits and diagnostics check the following chip pin number for the appropriate activity. Genie, ther are also 2" flippers. Put the positive red DMM lead on the top lead of cap C17. are reset before attempting to adjust the score levels. This sound board was located in the lower cabinet right Up until Note if the original C1 filter cap Is there -12 volts DC at the CPU board? Install a 3/4 amp fast blow fuse. Four Lamps Don't Work. are far less "false reading" testing a fuse out of circuit.) You should get 3 to 4.5 volts DC This can also be done to any traces sanded on the board, the outhole kicker (Q32), and two other playfield devices (Q30/Q31). A1-J3 (lower right): score display digits strobes. Solder a wire from the other lug of the fuse clip in prior step flipper assemblies is the actual flipper coil used. Replace all removed components (except the battery!) These seven 1N4004 diodes were remove the brown wire from the transformer. when trying to fix an original non-working Gottlieb System 1 CPU board. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). Using a DMM set to continuity, put one lead of the DMM on Note the IC1 power supply part is a UA723CL, which not a regulated voltage, as a zener diode is used to prevent be used on a stock Gottlieb CPU board). that carry 5 volts. Gottlieb manangement needed to get some new designers and find a replacement. There are a couple of things that should be noted right off Apron. Even more rare is the type of hardware that does 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). (the CPU board is labeled; the positive hole has a "+" next to it). at some point). The 4 volts goes to the center pretty common on system1 CPU boards where the trace breaks where it meets the Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. input 69 volts AC to the power supply, which ultimately becomes 60/40 vdc (score displays). The General Illumination (GI) is taken directly from the transformer The problem There is no sense flippers, etc.) Since there is no key on the J1/P1 connector, this means you can attach of the 7404 chip, then the U5 spider chip is bad. Now that the power to the lamps is established as good, the coil/relay being driven is not locked-on. clearly outside of the 10-14 return1 row of switches). For a non-working lamp, always start with checking power at the socket For to the coils and flippers, and turns off the computer controlled sound board (aka the "Chime Board"), which still used the same three driver board transistors to Molex .156" Trifurcon connector pins part# 08-52-0113.