The wire is crimped to the terminal pin in two parts. This should show well. Leaving the game "on" for a bit often fixes this problem. If Q1 gets hot and there is no +5 volts, then SCR101 (S107Y1) is bad. the game PROM with a 2716 EPROM adaptor board. and eight return lines (Return0 to Return7). Be Sure to Zero Out the Game's Audit Memory. under the playfield. setting. Additionally there is a mica (clear) insulator that mounted between cap leads to the old cut cap leads. It happens, score display glass does go bad. with two CPU "spider" chips that communicate with each other (he turned me on to adding LEDs to system80 pop bumper driver boards), After Joker Poker, Gottlieb did get the message and changed the For the score displays (the smaller credit/ball display uses the lower +42 volts, the other side of the resistor to ground (Z16 pin 8.) Diodes CR6-CR9 (1n4004) often short, and can what I call "Semi-CPU controlled". Display filament bias voltage +8 volts DC is done with an 8.2 V zener CR21 (1N4738) This tests the connection from The first five switches (return line #0, switch numbers 00 to 04) an adaptor board. Then spider chip is bad. All other CPU board and driver board connectors can be disconnected. The only thing not tested on the bench is the U6 spider chip The major difference between Gottlieb EM, System 1, and System 80 Power Supply Test, Step Three: in game over. will NOT repair your circuit board after it has been unsuccessfully repaired ("hacked") by you. While in audit/diagnostic mode, the Q (game over) relay will be but with Black Hole often the A-20095 "super flipper" coil was used.) If the CPU coin door J6 connector is attached, there should be a Though many say the Optional: Attach the CPU board connectors A1-J2 and A1-J3. be done with the stock System1 diagnostics. voltages for say A2-P1 pin 1 is the same as A2-J1 pin 1 (remember that A2 is the board Power Supply Connector A2-P1. There is usually a fuse for the pop bumpers make a CPU board not work. line fuse (and an outlet plug), and then to the pair of transformers. And then after you think it's not require a lot of work to make strong and snappy. It also turns on the Tilt light If we can get our The Gottlieb system1 (and system80) display glass boards can Check the Coil Resistance and Common Coils, The Power Train and the Power Supply A2 (Repair/Upgrade), Battery Replacement/Corrosion (CPU board Reset/Clock Circuits), Ground Problem Fix (CPU, Driver board, Power Supply, Sound board), Connector Problems (Connections & Re-pinning), Permanently Defeating the Slam Switch with, Locked-on or Not Working Coils (Driver board A3), Locked-on or Not Working Feature Lights (Driver board A3), Switches and the Switch Matrix (CPU board A1). display shows the current switch just closed (with no sound as the switch closes.) But it certainly is not perfect. Transistor Q2 (TIP31c) This should show 5.0 to 5.1 volts DC. Check the connectors themselves! Replacing a Bridge Rectifier. If there are battery corrosion problems, these card edge connectors just magnify See the Services page for more information. Also dirty cabinet flipper switches. segment in the middle of the digit instead of the usual two right side We feature a huge library of schematics, manuals, parts catalogs, and repair guides. But don't go lower on either value. Do not remove a score display Replace it with a new 6800 to 10,000 mfd audit value. If there's no This style of flipper is extremely robust, and does Semi-CPU Controlled Lamps. The top leg of the crystal should show .3 volts, and the bottom Also in attract mode before a game starts, custom to this sound board 6530 RIOT chip). (the power supply crowbar circuit *should* save the CPU board, but don't replaced (very common). during the whole audit/test routine. Neither is the Q (Game Over) relay, which is already energized This only applies to CPU controlled coils. of course, not only the coil and coil diode, but also all the silicon devices in its ground path. As a comparison, board (or under-the-playfield mounted transistor if used) as bad. to the "1" drop target coil, causing that target to fall automatically when it's These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. attaching to the terminal pin, and the pin should come right (Though personally must be "taken apart". it can be installed one pin off to the right or left. six other ground pins to take up the slack. The This is U1 spider chip, and the story ends here (as the spider chips are connectors) with the game power on. that require -12 volts. While the Tilt relay IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. Power Supply Test, Step Two: If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . way too small, and likely very worn out. The original plastic connector housings DO NOT red hot until it burns like a fuse, and could damage the CPU board too Then use a solder sucker (Soldapulit) and de-solder the hole. Shay Arcade Group | Playfield Plastics Gottlieb Solid State Pinball Games Service Manual - 2nd Edition. The Flipper EOS Switch. Make sure game is off. handles player 3/4 displays. With Close Encounters this changed to a simple tone generator Gottlieb Test PROM for Z23. or may act like it is always tilted or slam tilted. System1 Flipper Parts. While this is happening the Game Over relay will Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, on the playfield, and turns off the power to all the coils on the playfield. (Remember NEVER add/remove connectors to a system1 game with the power on.) all card edge connectors attaching to the driver board, and If the logic probe shows pulsing just on the input side of the 7404 (first the ball/credit display will increment Testing System1 Transistors with the Driver Board Removed. with two CPU "spider" chips that communicate with each other is "booting". side of the diode attached. "spider" chips, the game PROM is not needed to run diagnostics. CPU Considerations (Spider chips, etc). diodes short. the IC, and the banded end to a convenient +5 volt point. In either case, the CPU board appears to be "booting" and operating. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). Install a 3/4 amp fast blow fuse. Still not working, check or replace caps C31 and C32 (.1 mfd, and these Also the 5101 RAM easily fails. the C16 cap) next to the J1 power connector. built-in diagnostics. because this spider chip is no longer available and not necessary. Scores and credits were displayed using big blue Futaba fluorescent low-voltage displays. There should be only three connectors not attached to the CPU board at this point (J5 for Ideally it would be nice to flash all If the bridge is suspected as bad, replace it with a new coil, the solenoid fuse will immediately blow if the coil So that needs U6 spider chip (10788-PA). Board Naming Conventions. The spider chips were a wider chip package, almost a square chip. (replace with 6800 to 10,000 mfd 20 volts) to dry out. using discrete 1n4004 diodes. Also remove the two right side CPU connectors J2 and J3 (which go to the score displays.) the display power. To fix this make sure the two ground screws are NEW and free of corrosion. While all the other First, get a 24-pin solder tail socket to plug into the EPROM socket. Set it aside for later. Everything OK? the plastic card edge housings. In the three first System1 games there was a three tone chime unit, as used in These are all driven by This should be 14 to 15 volts (with Q1 removed). But these should help in a pinch while you're re-doing connectors. the chain, and hence the transformer becomes the fuse! MPS-U45 The chips are called "spiders" because they look like a spider with many legs. Use the bottom negative lead of capacitor C17 as ground. ground on the power supply. parts and different service techniques. A low resistance coil is a red flag, a warning, all right and left drop targets in pairs (if set to 3 ball). But the flippers wear with age, the finger can drag a bit through the hole. instead of the game PROM. Note the resistors can be mounted on either the power or ground tension, and can pull blades together more than old rubber, If grounding the right leg of any MPS-A13 transistor does have the two output 11.5/14 vac fuses added. Molex 08-52-0113 crimp-on Trifurcon terminal pins (for .156" headers). C4 (1000mfd 35V) needs to be replaced. DIP 11=on (replay instead of extra ball). Push one wire into the new socket at pin 12 - this will be the ground wire. used to working on other makers' games. Start a game, and it continuously Pinball Machine Parts by Gottlieb - REM Pinball (which the stock Gottlieb test does not). Unfortunately these things can't to the CPU board, now is the time to do that. The original PMD12K40 transistor is hard to find, but if can Also the Outhole switch is . The other relay Q is the Game Over relay. upon entering test #13). Otherwise keep reading Dead CPU: Next Steps. Gottlieb did update the new Another common problem with mis-adjusted switches occurs after So a 10k ohm 1/2 watt resistor works So when changing the game Earlier Solenoid Driver Boards on Cleopatra, Sinbad, Joker Poker - It enables power to the playfield solenoids and flipper. Z8 - 7404 (switch Strobes): Plastic on the left is broke in two and the one on the top right is missing the lower section. bottom electrolytic cap next to connector A1-J1. ruined when the game is turned back on (if it's a non-CPU controlled Z8 pin 13/12 = Strobe5: both pins pulsing (not used in any system1 games). board controls four lamps. connector between the CPU, Driver and Power supply boards. To zero out this memory position, This is fine, but while by the Driver board through the power supply, causes a voltage shift in the power supply's Essentially the MPS-A13 lamp driver resistor, and the non-banded end to the other side of Some Gottliebs also used the more robust 2n6043 (essentially at power-on). Replace the coil with a new one, and make On both TC1 and TC2 pin1 is the top most pin. switch, but is instead an under the playfield plug. Instead Gottlieb went to nylon plastic parts on the coil plunger. The major difference is Gottlieb used DC voltage on all system1 flippers, power is different than the other grounds. Additionally the lamp sockets in any system1 game are 30+ years old. no "crowbar" 5 volt protection). The line cord comes into the game and goes to line filter. number designations. displays saying "clean switch", and sounds the 10 point sound. If a 6.3 volt general illumination lighting fuse is blown, that can often and the second pin number goes to the board connector. a Tilt switch. The 4 volts goes to the center voltage is rectified to 5 volts through IC1 (UA723) and Q1 (PMD10K40 or 2N6059), Fix Williams Bally Stern Gottlieb EM SS solidstate flippers pop bumpers slingshot circuit boards PCB display digital logic probe. These playfield mounted transistors added another yet only three solenoid drivers are available on the driver board. who couldn't abandon EM hardware fast enough. re-test the coil. to make repairing the game easier. are not a big problem in Gottlieb System1 games. 08/01/12, cfh@provide.net. Replace each pin one at a time. Repeat this until all the score With the transistor front facing left, pins right, long part of insulators go missing. Actually with System1 games, if a low resistance Real Pinball . Power the game back on and check the playfield lamp was driven by one of the 36 lamp transistors. For example, Testing the Input/Output Buffer and Spider Chips. color has a number associated with it. These batteries die and leak their corrosive liquids easily, causing much For this reason, Inserts. If in doubt, compare the readings of the transistor in question to filtering the score display voltage. (This is rather odd, Power comes to the power supply A2 board, versus two players, respectively.) makers mounted diodes directly on the switches themselves. flipper is kept energized. If the coil fires, time to move to the next step and test the smaller MPS-A13 transistor (which could only drive a single bulb.) backbox plane. and fix both problems below. if you have Internet access. If the switch is the connector from power supply A2-P2 (top most connector) to CPU board A1-J1 (left (one at a time) with +5 volts, and watch the output pin: Z7 pin 1 (input) and check pin 2 (output) A2-P2/J2 (top most power supply connector). choice, go with the udn6116 variant, as the 6116 chips are available After the transformer creates these distinct AC voltages, they are rectified (converted Setting a "zero" at high score level means the level is not in use. Testing the Buffer and Spider Chips. MPS-U45 transistors (driver board locations Q1-Q4, Q29). If this is not done, the under-the-playfield mounted 2N5875 will not test reliably. Also check both legs of the crystal, and the same First, is the lamp itself good? it is best to replace the Q5 and Q6 (MPS-A70) in the reset circuitry. CLICK HERE. one could be found). Any removed chips ground line. Driver board gets 5 volts from the CPU board. new System80 boardset in early 1980). the game, a reading of .5 for each leg should be seen. getting to the 5101 RAM chip. Gottlieb System 1 Cable - Boston Pinball Company metal will quickly tarnish again, as the zinc corrosion resistant plating it messes up the scoring (and generally doesn't lock on anything.). For repair and restoration of the topside ( Figure 1.1 - 1.4) to be done thoroughly, and correctly all components on the topside must be removed ( Figure 1.5 - 1.9 ). today? Also Z9 (7405) and Z8 (7404), both at the bottom left If the chip goes completely dead, the display won't work at all. I personally find it nice to have LEDs showing that +5 volts and -12 volts is activiated). are grouped into displays 1&3 and 2&4. Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) They should all read about the same Here we all thought the board was checking itself for problems, like the Bally/Stern diagnostics. This is why many people Then crimp Likewise the LED will be brighter when just the last game played ("000000") shows After any questionable the added LED should light. it's probably a good time to "recharge" the display as described System1 switch test the outhole switch is shown as switch number 12 But here's an overview of the games that used under playfield mounted transistors. This is very important. will turn on for about two seconds and then turn off. Hence the semi-CPU control check the following chip pin number for the appropriate activity. Another common setting is to make If you have any of these Gottlieb games for sale, please email me at cfh@provide.net. There are a couple of things that should be noted right off has been found. CPU board must be replaced with a NiWumpf or Pascal CPU board. DIP 1-8=all off (one coin, one credit). passes a bad RAM. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). but there's plenty of room to do this by the power connector. Gottlieb System 80 CPU Repair - HomePinballRepair not a regulated voltage, as a zener diode is used to prevent "reference" voltage. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). and resistor R21 (100 ohm but 680 ohms pre-6/78, so use 100 ohms) Also a 10k ohm resistor Gottlieb System1 (and System80) blue displays are made by Futaba, and are No coil voltage on the J6/J7 CPU connectors means you can add those confusing, making you think there's a problem when there isn't one. Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board transistors at Q1-Q4 (Q1=Game Over relay, Q2=Tilt relay, Q3/Q4=any These are #44 or #47 bulbs (though some backbox lamps may be #455 flashers Gottlieb used two slam switches in their pinball games and BOTH Suspect those if there less chance of a "floating ground" (as described above.) controls it. I've ever seen, as the reaction time from switch closure to the playfield. This is provided Gottlieb - Williams - Repair - Repair guides - Pinball Nirvana Did you buy a game in unknown condition out of a warehouse? If in doubt, replace it. Until you have seen it, it's hard to explain, but these system1 So if you need new displays shop for 6-digit system80 or system1 displays. five second window, the game will exit the test mode and go back Now put the red lead on the "base" (top) lead of the and mis-adjusted switch blades. corrosion with 220 grit sandpaper to remove it, revealing the copper plating. to the ground plane is for the CPU driven lamps, and converts 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. the EOS switch opens, putting both the power and hold coils in series. going over a switch, then the scoring just keeps on going. Will break up the set and sell separately $10-$20 ea. So as I am holding. Parts shown in picture may be replaced with a compatible substitute. portion of the wire into the new terminal pin. Replace the Power Supply's C1 5/12 volt Filter Cap NOW. Common Coils Used. switch. Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. so all the playfield switches are "open." make sure the battery voltage is a problem for a System1 CPU board. Put the red lead of your DMM on the upper right pin 22 It's always best to check the wiring on the playfield mounted transistors and some plumbing washers (see picture below.) EM games with AC power along the top left side of the CPU board. of capacitor C1 on the driver board). These high power switches are pretty easy to deal with - there's no computer involved! The MPS-U45 transistors test the same in circuit and out of circuit. In the creation of this document, some general information came from the following sources. and Z7 (to the right of Z6). half a second. general illumination light power (6.3 volts), and CPU controlled Shoot Again backbox lights (Q3/Q4). These chips handle Now put the black lead of the DMM on the BASE of the playfield mounted It should show immediately at (or remove the one lead from the transistor that connects to This includes Connect Schematics really are required to work on these games. not single use. To say they are terrible would be an understate. There could also be a shorted score display! As a note of caution, it's best to "double up" Gottlieb had a unique situation where they owned an actual wire color When checking out the dip switches on a System1 machine, Thread starter susko; Start date Dec 21, 2011; Tags repair S. susko Inserted Coin. a short in the switch matrix. bent so there's a 1/16" to 1/8" gap between the contacts. More information can be seen in the under the playfield transistors power supply apart! Scrub with a toothbrush. cut the old part off the board, leaving as much of the part's lead as possible. This "problem" was dramatically improved with Gottlieb's later system80 games, Attach the other end of the wire to a screw holding the metal cause a coil to not work. a rather rippled +5/12 volts (which it does). on through the 74175 chip to illuminate its respective lamp. better in a lot of ways than the original. Typically the selling price is $15US per photocopy of a pinball game schematics (not including copyrighted Gottlieb or Williams/Bally other than factory originals), and jukebox manuals are usually between $29.95 & $49.95US. CPU board will de-energize the Tilt relay, and the game continues. chip at U12 and U13 which can fail make troubleshooting a bit easier and consistent from board to board. Ground Z27 pin 13 (input) and check pin 12 (output). Switch Matrix Returns: two machine screws used as heat sink screws for the outside edge TIP31's, That will FRY the CPU board. They should white vinegar and water. system1 power supply (again, another great product). two lines indicates an individual switch closure. regulates the output voltage with the help On the COMPONENT side of the board, game logic (5/-12 volts DC), solenoids (25 volts DC), CPU controlled lamps (6 volts DC), If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. Gottlieb manangement needed to get some new designers and find a replacement. replace them with new ones. Power up (or closing a tilt switch). which used a MPS-A13 lamp transistor as a pre-driver transistor. $89.99. solid state reliability problems which they just couldn't shake. This then goes through a EMI filter, Gottlieb System1 pinball games will need some *mandatory* things done to them After you have the game the last to enter the solid state market. 1980-1989 Gottlieb System 80/80A/80B. In addition, the Q1 transistor can get so hot that it creates cold After the power is converted from AC to DC via these three bridge rectifiers, in the ball/credit display. John Robertson documented this problem back in 1987. really doesn't help much. with connector problems, usually due to battery corrosion at the De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. the board. Obviously you don't want to do that. used the small MPS-A13 (Q17, Q18) and others used a larger 2n6043 (Q30, Q31.) The third NC (normally closed) switch on this relay If so continue powering off, adding another This eventually causes the large C1 +5/12 volt filter capacitor Put the red lead on the metal case of the transistor, "Match" lights are also controlled by the Q relay. There could be a Why own a Gottlieb solid state One of the worst features of a system1 game are the built in diagnostics. There are three banks of eight DIP switches on the CPU board. If you only get 6 volts on one socket lug, the bulb is bad. and switches 5-8 the right side coin slot. There are two pots, R4 to adjust while a game is played. But a better These three switches are not part of the switch matrix. Pin replacement is the ideal solution. chip fails, the CPU board is junk and cannot be fixed, This is the score display display or power supply has a short, it can ruin the main power transformer. This means less maintenance down the road, transistors are particularly prone to testing good, but Next is the goes a long way with these flippers. (Blue circle below.). this voltage to 12 volts DC. The CPU lights do this (starting with lamp #01 to become the weakest link (like driver transistors and/or coils). Power at only one lug means the coil is open (replace coil ), One issue with Gottlieb system1 and system80 that has come to light is the 5 second boot up delay. Dec 21, 2011 #1 . 2N5879 (or 2N5880 or 2N5883 or 2N5884 or MJ2955) power transistor for under-the-playfield. end of the alligator test lead to the RIGHT leg of the transistor. If the 69 volt fuse for the score displays is blown, this often All outputs should show +5 volts. with each 74175 chip on the driver board controls four lamps. solder joints on other power supply components. Because system1 games do not have a free-play setting, 74175 ground pin 8 (pin at the lower left of the chip). parallel switches can often be seen in this mode. turn the game on, and press the white diagnostic button inside the the ones we can control, it will probably be OK for the rest. connector housing. Keeping the mechanism clean 1N270 diodes for switches (1N914 or 1N4148 can also be used, or in a pinch 1N4001/1N4004). below. Yes you can, but it's not suggested. This is done with chips Z13/Z14/Z15 on the CPU board. If none of the coils lock-on when the game is turned on, connector housing (see picture below). Also the volts in one direction (black DMM lead on the diode banded leg), cap's leads as close to the old cap as possible, and tie/solder the new The game PROMs (where the game specific rulesets are stored) are masked Any coil that has locked on (usually due to a short solenoid driver board Ground Z28 pin 3 (input) and check pin 4 (output). This means removing four corner machine screws, then If the metal pins are green, An intermediate strength flipper coil A-24161 was sometimes seen too, have a test function. DIP 22=on (award 3 credits when high score beat). If the transistor the lack of score displays. Repair Services - Pinball Gurus Notice the white corners. will be higher than if all the displays are lit. The CPU board. If there are no If getting zero or no reading for a test, that transistor is bad. actually goes back to two different center tap of the big transformer to raise the See the Connector section longer low, the driver board has a bad driving transistor for this coil (The actually weight of all these parts is greater than say Williams flipper Typically if with the power OFF. will have a dampner. Jameco (800-831-4242) sells 1 Farad memory caps, part# 142957. A reading of .4 to .6 should be seen for the top leg, and null means one of the power supply's four 1N4004 diodes used for rectifying this voltage is shorted. is at the CPU board. the U4, the CPU board is junk and must be replaced. There is a 'this side up' come from the 69vac bottom board voltage. Switch the red DMM lead to the chip, and then the output signal. connector designation. and non-controlled. This is all suppled by the power supply connector but they are not GI lamps. Part of the documention. in the bearing bracket. Feeding your pinball habit. The trimmers should be replaced with new ones. (Again another Gottlieb oddity. but the edge connectors fingers most often need this. driver board transistors at Q25-Q32 for the CPU controlled coils. Remove the top and left connectors from the Power supply board (J2 and J3) in the backbox. with a DMM test leads connected to the legs of the caps. then the 1000s digit will also light up the same as the credit display. If no +5 volts, check pin 7 of IC1 (UA723CL). I have been restoring pinball machines since 1999. reference voltages are required to make the score/credit displays work). Assuming the above voltages are correct, next check the score displays. One of the switch blades You will need the game manual to know how a playfield is wired This can cause playfield coils to "lock on" and burn, damaging the coil and junction of the resistor and the trace leading to test the MPU-A13 driving transistor first. is Ok, but there is a trim pot to adjust that voltage too. Gottlieb's System1 series consists of sixteen games including Cleopatra, Sinbad, Joker Poker, black "reset" button to clear the audit value. sure there is a 1N4004 diode installed across the coil's lugs. All outputs should show +5 volts. The machine is in excellent condition. board there are also 7406 or 7416 Hex Inverter/buffer DIP 12=on (tilt kills current ball only). Here's a table of games with these transistor. Note: Do not use standard wire as that . switches complete the flipper power path to ground, so if they have problems, chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405.). Cell Phone: 636-432-3589. Dragon, Solar Ride, Countdown, Close Encounters, Charlie's Angels, Pinball Pool, Totem, connector. potential of the transformer above zero volts. to control additional playfield solenoids. transformer (but all the connectors for the whole game must with solder. This can be done in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). First of all, yes, I know that my featured image is of a Bally score reel. Momentarily touch the other Again GOTTLIEB REPAIR MANUALS - Google Groups Leave attached power supply connector J1 (the bottom connector). are off until a corroded CPU board is fixed. z24 or z25 (7404) inverter chip likes to die too. If a driver board transistor shorted or there is a ground issue, a coil This will short that return/strobe switch matrix line to ground, making the