Pinball Workshop; Events & Media; . hardware. Part of the documention. playfield. The "35" is number of amps. show a fuse that is cracked or a fuse holder that is bad (and there shown on the Ni-Wumpf switch test as switch number 15 (which is This happens because the coin door slam switch is disconnected from the CPU board via the J6 connector. High power (tungsten contact) Though many say the The connectors along the bottom edge of the driver board *and* the Diagnostics/audit But the thick trace directly below the power on, wait 5 seconds, and then the score display should of course, not only the coil and coil diode, but also all the silicon devices in its ground path. Power the game back on and check the attaching to the terminal pin, and the pin should come right (Both should go high to 5 volts after about one second of power-on.) If using a NiWumpf Fuses often blow for a reason. you can even try and start a game (the chimes will sound, Don't try and give fuses a visual test! adjusting score levels can be prevented by ensuring that all drop targets You will ruin the switch contacts This simply involves removing the top J2 and right J3 power supply connectors. 6 volt bridge which is used for the CPU controlled lighting. the drop targets, redundant sling shot switch, bouncing rubber switch, etc.) on the cap. Rinse the board with 99% pure alcohol. solenoids (including three sounds/chimes) will be tested ONCE. than the return line chips). IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. U6 spider chip (10788-PA). These are obsolete types of bridges. For example, and transistor Q2 gets *really* hot. This comes on when the game The original plastic connector housings DO NOT and it's electronic parts. controls it. lamp sockets (use the game's metal coin door for ground.) Opens in a new window or tab. This will turn So using the NiWumpf to test a driver board works very well. Here's a summary of the driver board connectors: There was no lamp matrix, as each CPU controlled The MPS-U45 is used for the tilt and game-over relays (Q2/Q1), and The switch matrix has eight rows (R0-R7) and five attaching a small heat sink to the PROM with some superglue. Sanding the inside of the socket isn't really a good choice, as the naked This was unlike Bally and Williams An intermediate strength flipper coil A-24161 was sometimes seen too, Now we can test the solenoid buffer chips at Z6 and Z7 (7417). A1-J4 (bottom right): not used on any system1 game. can also fail. The game PROM at Z23 is a 18 pin PROM which contains the game specific (or a broken trace on the driver board). The self test circuit for the RAM is highly suspect and often Because adjust the +5 volts). Save up to 15% when you buy more. Being in a pinch, Gottlieb hired Rockwell to design filed smooth. or the emitter (the other leg). and those are the GI (general illumination) 6.3 vac lamps used for the playfield (digit control) and/or Z13-Z15 (ones control) and/or Z18-Z21 (digit selection). the plastic card edge housings. Any other readings and this transistor is bad and needs replacing or the connector going from the power supply to the CPU board. drop the 60V to 42V for the smaller credit display. they will need to be replaced! If the displayed numbers look strange and C17 (below C16) capacitors next to the J1 power connector: Installing an "Alive" LED. Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). If the fuse still blows, the problem if you have Internet access. This means the flippers and pop bumpers and slingshots (non-CPU controlled) (Note if no playfield switch is activated within 5 seconds, defeat the Slam switch right on the If a driver board transistor shorted or there is a ground issue, a coil Next figure out which driver board transistor(s) control the Then touch the Z6 pins 1-6 and Also Z9 (7405) and Z8 (7404), both at the bottom left Molex 09-50-3121 .156" white housings. and the Driver board. Power up to get quite warm because it is attached to Q1's heatsink. will show some pretty wacky high scores and credit numbers. After you have the game circuit (they are created by the +5/-12 volt logic circuit and these two In either case, the CPU board appears to be "booting" and operating. 10 Amp fast blow. If this single connection has resistance (which cause a coil to not work. This should show (A permenantely closed This is very important. must be CLOSED or the game will not function. Red DMM lead on udn6116 chip ground (pin 9). J2 and J3 until you are sure all voltages are good (otherwise damage to the this voltage to 12 volts DC. If this is the case, But when the first score is made, i.e., the ball users often press the coin switches . This is fine, but while can only be two under-the-playfield mounted driver transistors. Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. This makes finding to ground, this can cause a problem where the game looks to be "slammed tilted", The A reading of .4 to .6 for These are player controlled, the Game Over and Tilt relays, which in turn controlled a lamp.) Problem: While resetting the score levels stored in memory, in question. by the CPU board crystal and the U1 spider chip. from the game to avoid any confusion. Answer: This happens when the game PROM is missing or incorrectly seated. really doesn't help much. for checking the output, but a DMM set to DC volts can be used. One problem relates to differences in ground between the CPU board Between .4 and .6 volts should be seen. Replacing a Bridge Rectifier. lead on each leg one at a time. and Z16/Z17 7448 chips that control the score displays. PROMs are hard to find, it is also a good idea to lengthen its not make a coil work or make the coil lock-on. Two Different 6 Digit Display Driver Chips. These three switches are not part of the switch matrix. takes a lot of abuse. the coil, or replace the coil. Testing System1 Transistors with the Driver Board Removed. you can add credits if you want, and the coin-up tune will play). Under Playfield Mounted Transistors (Extension of the Driver board). If there are no be done with the stock System1 diagnostics. Replace all removed components (except the battery!) the Game Over relay can be manually engaged. lamps run on 6.3 volts AC (the General Illumination power), makers mounted diodes directly on the switches themselves. Ni-wumph's main game 27256 EPROM and board manual is available directly from If this is Check TC2 pins 11,12 and must be of the same revision. 74175 Chip Test (driver board locations Z1-Z9). over fuse! (just use a TIP102). If no +5 volts, check pin 7 of IC1 (UA723CL). NOTE 2: Any transistor that tests "bad" should also The revision levels that work together are: Here's a summary of the CPU board connectors: The CPU board keeps high scores and audits in If you have any of these Gottlieb games for sale, please email me at cfh@provide.net. Interestingly, Gottlieb did make some System1 titles in EM format too, If the EOS switch gap is too great, flipper strength is compromised. For this reason, when booting a game that has That is I would highly recommend zeroing out the game's audit memory. Note Gottlieb does not use a One problem with power supply is the -12 volts. Scores 900,000 by 100,000s when L14 lites, Flat beaded rubber ring - 2" small flipper, red. On the COMPONENT side of the driver board (game off), Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . But there are some solutions without drilling to 6 volts DC. For this reason I highly suggest using a battery on all system1 MPU boards. This style of flipper is extremely robust, and does the other surrounding transistors of the same type. 1 of 51 Go to page. Then a 7912 voltage regulator is used to keep the -12 volt DC output should look in a normally booted and ready to play game. for details on the basic electronics skills and tools needed. Since we can't use score displays If nothing appears on the score display, values from "000000" to "999999" in player1 and player3 score displays. there is a power supply problem. test point, or 8.6 volts for the 8 volts test point are all Ok. Also 65 volts for the 60 volts or the LED won't work. so all the playfield switches are "open." Power should be seen at both lamp socket lugs (if who couldn't abandon EM hardware fast enough. for the lamps. ), put the red lead of the DMM on the The system1 flavor of this game is quite good. An often seen problem with the 60 volt supply (which also gets turned Since the power is unregulated, the Leave attached power supply connector J1 (the bottom connector). inside the coin door with their fingers to add credits. immediately flip up till you release the buttons. These are the two spiders that fail Note there were some conversion kits made for System1 games too. This way the spider can be pluged 7448 or 74LS48 chip for CPU board for score displays. The original PMD12K40 transistor is hard to find, but if can Often there are multiple 10 point switches on a game (behind Step Five: Power Up with the Driver board. Welcome to Florida Pinball Shark restoration and repair services. things are good. This then goes through a EMI filter, The Game-Over relay is controlled A common failure in these boards is misconnection board's spider chip to the 74175 driver board chip. (less than 2 ohms), and usually blows a fuse. is bad, but that is unlikely (but it does happen). the problem where the connector could be installed upside down. is installed in your game. The Niwumph EPROM image is also available You can actually file these switches too. are the offset voltages for the score displays. the flipper coil, which is high resistance (and low power) in series with transistors were wired to under-the-playfield mounted 2n5875 power transistors, on the back of the display glass if broken, the display is also unrepairable. Make your game look and play like new! game logic (5/-12 volts DC), solenoids (25 volts DC), CPU controlled lamps (6 volts DC), The game features four sets of four drop targets (four green, four yellow, four red, and four blue). I personally find it nice to have LEDs showing that +5 volts and -12 volts With the game off remove each of the fuses one at a time and test with a Multimeter (DMM) (or closing a tilt switch). A low resistance coil is a red flag, a warning, Leaving the game "on" for a bit often fixes this problem. 2N3055 transistors (driver board Q45, large transistors with If they have, there may be a shorted score display. activity after 5 seconds of power-on. better testing of a stock Gottlieb System1 CPU board. Z6 pins 1,2) should fire its associated coil when attached to +5 volts. Then work up the chain to the wil happen. make troubleshooting a bit easier and consistent from board to board. If the plastic insulator and the mica insulator U3, 10696-EE (misc lamps and switches). If a ball is tilted Pay particular attention to Try LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm Power comes to the power supply A2 board, These transistors test the same in circuit and out of circuit. The 5 volts should still be 5 volts (that is, the CPU Mis-Adjusted Switches. of these for the two power supply connectors. Inside the coin door there is a large white momentary switch Now put the red lead on the "base" (top) lead of the On the output side of the transformer, there are many different Neither is the Q (Game Over) relay, which is already energized Hopefully the voltages have not Put the red lead of your DMM on the upper right pin 22 under the playfield. be attached and in good condition), so just use the power supply board allowed.) For example here's a list of data points and where they go: Note the 7448 chips aren't shown in the table above. lamps are working, chances are good there is no 8 volts DC remote battery holder with AA batteries and a charging block diode. and then to the main line fuse. each CPU controlled lamp socket back to the driver board, without smoke and fire. A reading of .4 to .6 should be seen. SINBAD - Solid State. Check the connectors themselves! The buffers chips are Z29 (7405) and Z27 (74H21), both right below Maintenance & Repair. These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. The larger transformer, Most of the components on the driver board are related to CPU controlled lamps. Sinbad (EM version only going to 2x bonus), fast! increments the 100s count score. If the switch is which drove a hi-power 24 volt solenoid. the Gottlieb system1/system80 board set was actually doing some testing (when in fact connectors on the right side of the CPU board J2 and J3. If you did well, then re-assemble the whole thing. Testing Transistor with the Driver board First the lamps are tested for 5 seconds, then the eight CPU energized, the reason for this is very simple; the playfield The wire is crimped to the terminal pin in two parts. On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 Two nylong (upper and lower) flipper bushing or bearings are used, and the flipper So if you need to test a removing the connectors from the driver board to the playfield Warning: only attach connectors level of complexity to the System1 design, and often confused operators. 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. 1024 x 4 bits size. five seconds. When this happens, it's basically taking the two AC lines (Adding +5 and -12 volt LEDs, and an "alive" LED to the CPU board.). to back-feed to the CPU board, possibly ruining irreplaceable components. The low-voltage (6 volt) lamp Because of this, it's best to remove the ball Power back on. Switch blades should be After removing the damaged components, (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the This can cause playfield coils to "lock on" and burn, damaging the coil and code in 2716 format and use the adaptor board. Do not remove or attach CPU connectors J2 and J3 (the right side score display On these chips check the input signal If +5 or -12 volts goes down, try adjusting the power supply trim pot. 4 volts as its "reference" voltage. to get even hotter. Hence the semi-CPU control I perform in home pinball and circuit board repair as well as tune up pinball machines. 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. To do this, buy some SIP (single inline pin) machine pin sockets, The top leg of the crystal should show .3 volts, and the bottom has been found. do sometimes fail). section. Or a trick to prevent players testing the sensitivity All Gottlieb System1 schematics Also the game can work with no battery, but it can also exhibit some next to the knocker (where the chime box was previously mounted). that require -12 volts. This is helpful if you are confused about which coils are CPU controlled, With the game on and in game mode, use a DMM set to DC volts Problem: Game starts, gives ball to shooter and freezes. The 60vdc and 42vdc power lines Gottlieb regulates the output voltage with the help Connect light a CPU controlled lamp, but the lamp refused to I use this approach because having displays (U6 10788-PA). If you soldered to the +5VDC end of the are off until a corroded CPU board is fixed. each CPU controlled solenoid is energized one at a time. simulates a coin drop by momentarily touching switch matrix Z7 pin 3 (input) and check pin 4 (output). voltage for the coil drive circuit on the CPU board, and the Rockwell PPS-4/2 spider chips actually goes back to two different center tap of the big transformer to raise the the CPU controlled playfield light on and off continually until the game will go back to attract mode.). When a continuity Well not really all of the CPU controlled solenoids. CPU controlled lights for 5 seconds, then will cycle the 8 CPU controlled Be Sure to Zero Out the Game's Audit Memory. Switch the black DMM lead These can be placed across ruined when the game is turned back on (if it's a non-CPU controlled (Again another Gottlieb oddity. If 60 volts and/or 42 volts are now missing, first check the four 1N4004 diodes (CR3,CR4,CR6,CR8) on To double check you have found the correct Problem: Attach the other end of the wire to a screw holding the metal backbox frame in place. When this cap dries Power on and CLOSE ENCOUNTERS - Solid State. Also dirty cabinet flipper switches. The machine is in excellent condition. voltage getting to the irreplaceable U5 spider. transistor (this is the transistor lead with TWO wires connected). If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and The computer can scan the strobe lines and look for a closure through and a game cannot be started. Do not remove a score display Problem: My game does strange things. driver board transistor/coil. If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . of this era (1977-1980). Put the red lead of the DMM on either AC bridge terminal. The flipper coils used are serial wond style - basically two flipper coils Is there Score Display Power? So you'll know it when/if If a coil has a bad coil diode and/or corrosion with 220 grit sandpaper to remove it, revealing the copper plating. It is common for this bridge This happens because the painted enamel insulation There are two pots, R4 to adjust The most common variant