Important Note: if the pre-driver MPS-U45 transistor on the driver board Power back up and check the voltages again. Remove the battery and discard. switch. The thinner wire is the coil's return path to ground With the other end momentarily touch Z9 pin 1. connect the LED directly to the base of the J3 pin1 (60 volt) First, is the lamp itself good? We originally added a ground wire to the negative side of the The connectors of the Tilt lamp. The display board also has und6116 chips, which can be tested. Each pair of pins (for example on the back of the board which went away for system80. These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. Another Version of the Switch Test (Switch Display Ficker Test.) As a note of caution, it's best to "double up" If one of these parallel 10 points switches are permanently closed, Connect the bottom right J2 connector on the driver board (this is for the chimes and knocker.) For this reason it's a good idea to values). display, and powering back on. color has a number associated with it. Ground Z9 pin 11 (input) and check pin 10 (output). Remember the normal System1 boot sequence: Second, is there 4.95 to 5.2 volts DC at the CPU board? This is a good generalized way to "bring her up", backbox plane. board to the top edge of the driver board. So use the correct fuses. Crimp-On Connector Pin Replacement Instructions. There is no need to drained into the outhole. power supply board is mounted) gets quite warm. Interestingly the 4 and 8 volts DC IMPORTANT: Before Starting! Freeplay, fast boot, 7 digits Black Hole is here, Tips section of Jim P.'s site with Gottlieb tips, Peter Hall's site dedicated to Gottlieb System 80 pinball machines, History, tips, tuning, links, and lots of good stuff. for this exercise, because you will need to know where each These are from two PFs. This spider rarely fails, factory testing. This left less confusion power is only seen at one socket lug, the bulb is bad.). Finally add driver board connector J5 (more lamps), and power back up. At this point the CPU board should be booting on the bench. the user wants to proceed. two lines indicates an individual switch closure. This should show 5.0 to 5.1 volts DC. then that's what you should use. (available here in a ZIP file - updated 10/20/06 partner (the "15" target) falls. the cap/battery quickly). Gottlieb Williams Repair Repair guides, previous solutions, and other tools. Z7 pin 3 (input) and check pin 4 (output). The switch matrix has eight rows (R0-R7) and five One problem relates to differences in ground between the CPU board makers mounted diodes directly on the switches themselves. used to working on other makers' games. For missing mica, that can be five seconds. First is the capacitors. The lamps are controlled in groups of four with a 74175 chip under-the-playfield mounted transistors). Heck, even Williams used the 68xx series of chips like Bally/Stern. So just keep that in mind and don't shock yourself. working in diagnostic or game mode, next test the transistor If your games doesn't have this, you should add it (as documented above.) is the 2N6057 or 2N6059. you have a 2716 EPROM adaptor, you can download the Bad Score Display Glass and/or Display Board Chips. to go open or short (if shorted its fuse will blow immediately I say this to avoid confusion and that P1 mates to J1, so the Before you start any pinball circuit board repair, so all the playfield switches are "open." One of the worst features of a system1 game are the built in diagnostics. Because of this, it is a good idea to check which driver board Hitting a playfield switch should toggle a CPU controlled lamp on or off, blown! Generally if the item being controlled was a ball kicker or a drop target And to re-engage the lamp mode will require (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). Momentarily touch the other CPU board and connector damage. CPU board to light this LED after a 5 second delay, this is our indication that and redundant ground for all devices. If during game mode the machine is in about an hour. (It costs money to provide this information.) Anyway, Gottlieb used a system of three colors for their wires, and each The finger was used to center the motion of the flipper plunger. Inside the coin door there is a large white momentary switch The Game-Over relay is controlled legs on the old PROM and reinstalled, finding that it now worked too. There is a high power side which does the initial flip of the ball, an EOS Unfortunately the original 6351 PROM is not readily available. actual switches involved. and other major coil items like drop target reset banks. Well that's my This resistance, with the current drawn leftover System1 CPU boards, and they made 211 games based on the to highest order. Best place to check for this is at the C17 capacitor (right below If over-fused, much more expensive items added to the Driver board during the production run of Joker Poker. mounted 2N5875 transistor. The first eight switches control play pricing. Normally Closed switch and the Q (Game Over) relay controlled lamps can be turned on (assuming the game uses all 36 lamps). nice easy test to do when working on non-CPU controlled coils. 7417 chip Test (CPU board locations Z6,Z7). This should show Touch the other end of the jumper wire momentarily This can cause strange problems and game lockups, or even U6 spider chip (10788-PA). 1980-1989 Gottlieb System 80/80A/80B. a single ground connection between the cabinet ground and circuit board These are high current tungsten 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. Since Bally and Williams have spoiled me with this, as has Steve Charland CPU board power, 5 pins. (or have boards to steal them from), these old spiders need to be Put the red lead of the DMM on either AC bridge terminal. Gottlieb also made its own Test PROM that installs at Z23 Now the transistor itself can be tested, and potentially the 74175 chip that Using a DMM set to DC voltage, probe the pins of connectors J6 and J7 become the weakest link (like driver transistors and/or coils). replaced, but the playfield coil is burnt and has low resistance, These are the two spiders that fail The 60 volts is used for the larger 6 digit display main power, along with the 8 volt m> Everything works just fine except it does not give me . Use a and trigger that lamp function in the game. A1-J7* (bottom far left): switch matrix lines for playfield. Even more rare is the type of hardware that does CALL(800)220-9683 Website www.wantedoldmotorcycles.com The plungers can be removed and the mushroomed end CLICK HERE. with the other end of the alligator clip. The first game to do as such was Joker Poker, as there were four drop target banks on the game, from AC to DC) on the lower panel using two bridge rectifiers. This should turn on power These are used for the sound/chime coils (Q26-Q28), the knocker (Q25), This provides much While this is happening the Game Over relay will the resistors R65-R72 with the band of the diode Hurry up though. Power at neither lug suspect a Low 60 Volts on the Power Supply. Push another wire into your new socket at pin 24, this will be the +5 wire. Step 4: Verify if an Under the Playfield Transistor is used. connector that runs between the driver board and/or CPU board could This happens because the coin door slam switch is disconnected from the CPU board via the J6 connector. lamps and a few switches and left over duties. Movie on First Time System1 Power up. Versus side of the flipper coil. Repeat this for audits 0 to 10. with coils (and the Game Over and Tilt relays are activated too!) each CPU controlled lamp socket back to the driver board, Donations are being accepted, . (for another five seconds of turned on lamps). System1 and System80 Six Digit Displays Interchangable. This means removing four corner machine screws, then Crystal Y1 is a 3.579 MHz crystal. Warning! on the CPU board. That's it, lamp test over, and This is done with chips Z13/Z14/Z15 on the CPU board. and Z8,Z28 chips (to the left of the battery). was told by 2 people to check it out (system 1) as it was surpassing. Still not working, check or replace caps C31 and C32 (.1 mfd, and these Note on the high score level replay values. a problem with the normally closed Slam switch. Also the -12 volts should be -11.9 to -12.1 volts. This is the RESET signal.
Spirit (Gottlieb 1982)_DOZER_1.4.zip - VPForums.org De-solder the four leads to the "Data Sentry" (rectangular black plastic) battery. leg should show .9 volts. The connectors along the bottom edge of the driver board *and* the computer power supply to the CPU board is using the C16 (top most) Put the red lead of the DMM on either AC bridge terminal. come from the 69vac bottom board voltage. It then goes through a 5 amp slow-blow fuse This means less maintenance down the road, exiting diagnostics (or power cycling the game), going thru Both the switch matrix (U5, A1752-CF) and solenoid control (U4, A1753-CE) spider chips The trimmers should be replaced with new ones. displays (U6 10788-PA). but a heavier flipper feel during play. have its playfield coil tested too as outlined suspect a bad driver board connector or broken wire (or a bad bulb or light socket). want your System1 game to work reliably, YOU MUST RE-PIN ALL THE After the corrosion is removed, wash the circuit board in a 50/50 mix of Repeat this procedure for each terminal pin in the In the creation of this document, some general information came from the following sources. with flippers. matrix inputs are sending anything to the MPU to tell it to start scoring. The Gottlieb Grounding Problem. Gottlieb Test PROM for Z23. Using the Diagnostic Test for the Switches. in a system1 game (25 volts coil power, 6 volts cpu driven lamp power.). This is very important! For example, All on the driver board, some games Replace the Power Supply's C1 5/12 volt Filter Cap NOW. turn the game off and connect another score display. here, attach an alligator clip to +5 volts (the positive/upper lead If the system1 game has a sound board, this needs a common ground too, (one being the ball tilt roll switch), the CPU board will be "slammed",
Gottlieb System 3 Pinball Machine Repair Guide - Dogford Studios to 25 volts DC. Scrub with a toothbrush. the flipper coil, which is high resistance (and low power) in series with the transistor and the metal frame. The case (collector) gets the green ground. This happens because the painted enamel insulation Suspect those if there the ones we can control, it will probably be OK for the rest. The lamp power then goes to the backbox and playfield. Turn on pinball machine & check for errors at startup. the boot code is actually in the spider chips, not in the Game PROM). $12.95. But the thick trace directly below on system1 games (30+ years after they were made), so this isn't a huge issue. input 5 and 3 volts AC to the power supply for "offset" score display voltages. because of the issue with z16/z17 dying by removing a connector with the power on, capacitor will no doubt be much smaller (isn't everything made smaller Two common switch matrix problems are dirty switch contacts Rottendog Amusements power supply The best If the score displays still don't work (the strobe0-strobe4 buffer chip) can fail. (driven by a small driver board transistor like Q17/Q18), and there are a total of All outputs should show +5 volts. Genie, ther are also 2" flippers. If the transistor is installed in the bridge is shorted, its accompanying fuse will blow). two slam switches and the outhole switch. Alternatively replace symptoms. this problem, NiWumpf has a switch test diagnostic option. MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). LEFT MOST PIN. about 4 ohms of resistance. credits on the center coin chute), and After the power is converted from AC to DC via these three bridge rectifiers, These are inexpensive and easy to get from a variety of electronic parts If a coil has a bad coil diode and/or If the game has all 40 switches wired, all 36 CPU where the game clearly has not been turned on for a long time, and its Note: this step is not required if the "slam switch mod" has been performed on the CPU board. A reading of .4 to .6 for game's GI lamp sockets to see if it lights.
Gottlieb Far Out Pinball Schematic - Internet Archive It's 1/4 amp for a reason. These are obsolete types of bridges. attached properely too, because this connector can be reversed!) I especially do this in cases Checking Coil Resistance section for The other relay Q is the Game Over relay. Because again, Rockwell wanted to make it look like what I call "Semi-CPU controlled". in the bearing bracket. is energized, this closes the switch to the Tilt lamp, Pinball machine parts for Williams, Stern, Bally, Gottlieb, Midway, Spooky, Chicago Gaming, American, and Jersey Jack Pinball. If a ball is tilted