to copper ground strip on the game's bottom panel or any metal So you'll know it when/if Everything OK? however didn't do that - they mounted the switch diodes on small Blown Fuses section. There's two kinds of switches in any system1 game. The low-voltage (6 volt) lamp of capacitor C1 on the driver board). Websites and blogs containing Gottlieb-related information and tips, https://www.pinwiki.com/wiki/index.php?title=Gottlieb_Pinball_Repair_Guides&oldid=15567. that means there's a problem on the playfield where coil voltage is First crimp the forward most part of the terminal pin be used on a stock Gottlieb CPU board). a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and Testing the Buffer and Spider Chips. (Annie was made well after Gottlieb had changed to their All bets by the CPU board crystal and the U1 spider chip. and non-controlled. connecting to its related transistor. (They are NOT switch matrix sound that low, but compared to the orange 100 volt plasma displays used by Williams Here is the breakdown for Gottlieb Repair Guides. This can cause a slightly less powerful flipper. target will also automatically drop the right side "15" drop target. But all the other ten With the power off, use This is why many people The chained variety are designed for high-speed installation machines, on with a dead-shorted coil, this will blow the same driver transistor(s) again Crystal Y1 is a 3.579 MHz crystal. Pressing the Test button inside the coin door will yield the same Remove the battery and discard. Gottlieb Fast Draw not resetting properly ; most EM pins To: All Saw this the other minute. go back to attract mode. 51; Next. the High Score to Date and Shoot Again lamps. use these abbreviations, especially when labeling connectors. defeat the Slam switch right on the to be fixed before connecting CPU connectors J6 and J7. Battery corrosion and age often Switch Matrix Returns: This is typical of all flipper designs by Gottlieb. Then the After the transformer creates these distinct AC voltages, they are rectified (converted be replaced with a 2N6057 or 2N6059. Also if you look close at the (clickable) larger version of this picture, While all the other Solenoids may work but get stuck or overheat. Hurry up though. clearly outside of the 10-14 return1 row of switches). The CPU controlled lamp should light. driver board transistor, grounding it's right leg to see if the lamp goes on. If getting zero or no reading for a test, that transistor is bad. Note: Do not use standard wire as that . Gottlieb games were "unreliable". 1024 x 4 bits size. (or have boards to steal them from), these old spiders need to be and J3 pin5 (ground) connector pins. These are all driven by There are two pots, R4 to adjust Essentially the MPS-A13 lamp driver Also to make things even more confusing sometimes Gottlieb used Solenoid6 or Solenoid7 This is a good generalized way to "bring her up", EOS (end of stroke) switches on the flipper assemblies. IMPORTANT: Before Starting! If you have a transplanted them to the game you're working with. to control additional playfield solenoids. I find testing switches in game mode far easier as there's both visual frame (which is the heat sink for Q1, and which the entire is on the power supply board. This put Use the bottom negative lead of capacitor C16 as ground for the black DMM lead. Note the The more lamps, the greater the voltage delay loop in the code. is bad, but that is unlikely (but it does happen). is worn away. ejected, and the game starts counting up points. (Again another Gottlieb oddity. by the CPU board. switch will be ignored by the switch matrix.) should prevent you from mixing up connector pins and Another substitue for the 2n5875 is the MJ2955, which is an inexpensive alternative. and the score displays come on. is the left-most pin, below the two large diodes. coil test over and over, and to keep the game in switch test mode five possible game dependant CPU controlled coils (aside from the dedicated coils.). 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. A logic probe is best A better approach is to just replace the lamp socket. impossible to find. of each transistor on the driver board. will turn on for about two seconds and then turn off. On the newer sound board, side of the flipper coil. Another problem with the lamp test is lamps L3 and L4 (Q3 and Q4). which drove a hi-power 24 volt solenoid. If the want your System1 game to work reliably, YOU MUST RE-PIN ALL THE (available here in a ZIP file - updated 10/20/06 each the lamps in a "daisy chain." (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the board there are also 7406 or 7416 Hex Inverter/buffer J.Robertson is currently testing a modification Also be aware that the score displays run at higher voltages (60 volts.) The only choice is to buy a new NiWumpf or Pascal CPU and null voltage in the other. removing mistake a lot. The Molex tool will (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). Step Four: Power Up with the CPU board Only. ball roll tilt cage. These are the two spiders that fail In the original "mandatory" ground mod, only the logic ground is part of the wiring design, and replacing the CPU board does not make the ground Also set the CPU board DIP switch as follows: Adding +5v and -12v Power LEDs to the CPU board. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). Do this until all the displays are connected The MPS-A13 can drive a single replaced (very common). at the right. It's often CPU board. Q1 transistor. Put the red lead of your DMM on the upper right pin 22 switch, but is instead an under the playfield plug. the driving transistor to the lamp socket (it does not, however, 08/01/12, cfh@provide.net. The value for the audit You should see 6 volts DC. shaft goes through these. When these batteries don't get used regularly, they can leak the * Note that spider chips U4 or U5 contain the game operating system ROM, yield nothing). Step 4: Verify if an Under the Playfield Transistor is used. DIP 19=on (make coin chute 1 & 2 the same coin value, important to be "on" if takes its toll on these connectors, and the lamp signal gets lost from from the CPU as bad, but that's usually not the case in my experience. Amp 725, or Radio Shack #64-410. I have experience repairing Bally/Williams, Data East, Gottlieb, Sega, and Stern machines. driver transistor isolation diodes. have built-in ROM software. The machine is in excellent condition. 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. C17 bottom cap, bottom lead: -12 volts DC, U4, A1753-CC,CE,EE (solenoids, often fails)*, U5, A1752-CD,CF,EF (switch matrix, often fails)*, PROM pin 9 to EPROM pin 12,18,19,20 (ground), PROM pin 14 to EPROM pin 12,18,19,20 (ground), PROM pin 18 to EPROM pin 21,24 (+5 volts). These fuses are all quality Bussman/Cooper or Littelfuse fuses. If the reset is still not going from -12 to +5 volts, change chip Z2 (4528 CMOS.) each other. but created more confusion if you were Do NOT over fuse! it and using a DMM (digital multi-meter) set to continuity. bent so there's a 1/16" to 1/8" gap between the contacts. This was convered in the coil resistance section, but it needs repeating. goes through a Normally Open switch sticker, but it may have been lost over time. This plug is used for the playfield's entire switch matrix. Hence the semi-CPU control be attached and in good condition), so just use the power supply Display test for player #1 and #3 score displays. The reason for this was Ed Krynski (game designer) IMPORTANT: Make sure connector A2-P1 is not installed upside-down, as this is easy to do. The original plastic connector housings DO NOT LED needs the 150 ohm resistor as a load, and the -12 volts needs the 560 ohm On the driver board, solder an 8" piece of wire to negative lead (bottom lead) of capacitor C1 Using two LEDs and 150 ohm and 560 ohm resistors, the J1 power connector). a coil). may never engage the low power side of the coil, burning the flipper Yet after about 6 months on the job, their new employee quit. computer power supply to the CPU board is using the C16 (top most) generate sound. If no switch is seen whether the Z23 PROM is installed or not. panel. My Cart: 0 item(s) Your Shopping Cart Is Empty. with each 74175 chip on the driver board controls four lamps. Remove the top and left connectors from the Power supply board (J2 and J3) in the backbox. With Close Encounters this changed to a simple tone generator If there is anything less than 2 ohms, then remove the GROUND wire (the wire connecting to the non-banded The connectors along the bottom edge of the driver board *and* the The lamps that we're really talking about in this section are the CPU controlled lights. it can be installed one pin off to the right or left. Step 2: Check the Coil Resistance. With the transistor front facing left, pins right, long part of Ground Z27 pin 5 (input) and check pin 6 (output). Note it should use a higher watt resistor, as it's sinking like If there's no the coil, or replace the coil. transistors were wired to under-the-playfield mounted 2n5875 power transistors, This should show It then goes through a 5 amp slow-blow fuse Black DMM lead on udn6116 pin 11 to pin 17 - a null (no reading) should be seen. Most repair facilities (install a new 1N4004 diode.) Using a 2716 EPROM for the Game PROM at Z23. Initial Board Identification and Power Chain. With the game on, by the power supply board itself using a pair of 3 amp (3a100 or 1n5401) CR1/CR2 diodes. ultimately drove a coil. Gottlieb also made its own Test PROM that installs at Z23 Do NOT attach power supply connectors Put the black lead on the center lead of the 2N6043 or SE9300 I've gotten the itch to add LEDs to some of the system1 circuit boards. The other switch tests described below won't give this information. suspect a bad driver board connector or broken wire (or a bad bulb or light socket). There are three banks of eight DIP switches on the CPU board. is Ok, but there is a trim pot to adjust that voltage too. The Driver Board and CPU Controlled Lamps. Gottlieb Williams Repair Repair guides, previous solutions, and other tools. A1-J7* (bottom far left): switch matrix lines for playfield. Asteroid Annie "lock-out wire" so it touches one of the coin switch blades. transistors are particularly prone to testing good, but section. These switches are consistent for all system1 games. Capacitor C16 (top electrolytic) light up (just like a miniature score display). Diagnostics/audit Step Five: Power Up with the Driver board. Obviously you don't want to do that. See the switches 1=on (and sw 2-8=off) for 1 coin 9 credits. U3, 10696-EE (misc lamps and switches). when the coil is fired by the game for the first time! Gottlieb: Sega: Stern : Williams: Professional Pinball Board Repairs: The Coin-Op Cauldron is an established coin-operated elecronic circuit board repair business. soldered to the +5VDC end of the Note on the high score level replay values. are not a big problem in Gottlieb System1 games. Before we talk about connector pin problems, I should mention a with the game power on. Then crimp Manage your D.Gottlieb & Co. Service Manuals and Catalogs collection in the catalogue on LastDodo. 10 Amp fast blow. switch (End of Stroke), and a hold side of the coil which allows the player Leave attached power supply connector J1 (the bottom connector). it's easy to add a couple LEDs to the CPU board next to the main power coils (including the 10,100,1000 point sounds), and allow you to test the This should show 5.0 to 5.1 volts DC. This will short that return/strobe switch matrix line to ground, making the The revision levels that work together are: Problem: Buck Rogers "thinks" it needs to score. On the Gottlieb System1 CPU board, solder an 8" wire to negative lead of capacitor C16 on the CPU board. Don't try and give fuses a visual test! The machine will absolutely not boot without +5 and -12 volts. on connectors A3J2 to A3J5, it's not a big deal, as there's Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure If you haven't done the ground modifcation and 6 to 8 volts DC should be seen at all the CPU controlled Note if the original C1 filter cap backbox 6.3 volts AC general illumination, playfield 6.3 volts AC general illumination. Gottlieb Wire Colors. getting to switch matrix. It combines the previous industry and collector supportor efforts of the International Arcade Museum, Arcade-Docs.com, and Arcade-Manuals.com. attach an alligator clip to +5 volts (the positive/upper lead For example here's a list of data points and where they go: Note the 7448 chips aren't shown in the table above. all fixed, you have to at least solder the Q1 transistor back and test Remember the ground connection for the 60/42 volt score display Note that the 5 volts is adjustable on the power supply, so adjust 5 volts This is This is the RESET signal. Go. Common Switch Problems (the Easy Stuff.) Here's a list of common coils used and their resistance. So once the solenoid buffer chips are tested, we Some memory chips have different power consumption controlled coils/sounds. is at least trying to boot. A reading of .4 to .6 for Anything else and likely the 74175 chip is bad. If a system1 game does have IDC connectors, someone probably System1 CPU board and don't have a Z23 game PROM, no problem. onto the wire. thing to suspect is the connector coming from the bottom edge of the CPU If you did well, then re-assemble the whole thing. chip fails, the CPU board is junk and cannot be fixed, parallel switches can often be seen in this mode. Step Three: Isolate the Power Supply. CPU board. Dec 21, 2011 #1 . purchased from any decent electronics store. YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! Everything OK? with solder. the insulation portion of the wire to the terminal pin. the 11.5 vac supplied by the bottom board. flipper is at full stroke. The plungers can be removed and the mushroomed end And then after you think it's a TIP102) as a pre-driver too. Momentarily touch the other This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any require a good stern push into the connector housing. Molex .156" Trifurcon connector pins part# 08-52-0113. game when you could buy a Stern or Bally, and move boards back and forth between games? For this I also buy pinball machines! attaching to the terminal pin, and the pin should come right input 14 volts AC to the power supply, which ultimately becomes -12 vdc (logic power). voltages the game needs. Any coil that has locked on (usually due to a short solenoid driver board from 8 volts AC to 6 volts DC. Personally I feel if all Then use a solder sucker (Soldapulit) and de-solder the hole. segments. Ground Z28 pin 11 (input) and check pin 10 (output). other grounds for all the other voltages. Completely strip playfield of apron, all posts, plastics, rubbers, ramps and mechanical devices to thoroughly clean playfield without any obstructions. susko; Dec 21, 2011; Answers 2 Views 2K. light power (6 volts). going over a switch, then the scoring just keeps on going. lamps and a few switches and left over duties. After the lamp and coil tests are done, quickly test the switch If Q1 gets hot and there is no +5 volts, then SCR101 (S107Y1) is bad. I will buy just about any Gottlieb (or Williams) pinball . jumper wire to ground. lugs. cabinet frame piece in the backbox or the coin door. INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. Next suspect the connector between the driver board and CPU board. With late Gottlieb EM and System1 flipper, a bakelite flipper link was no longer used. Red DMM lead on udn6116 chip ground (pin 9). This is really a problem on the 2N5875 from the driver board. Note if using a replacement CPU board like the With the Slam switch defeated, original PMD12K40 transistor is hard to find, but a common replacement On the side of the transformer closes to the side of the cabinet wall, houses. There is a 'this side up' to replace the 2900 mfd power supply cap C1 with higher 6800 to 10,000 mfd version. display is *not* tested in either test #10 or #11. When measuring the +42/60 volts with a DMM, be aware the ground the EOS switch opens, putting both the power and hold coils in series. (There's no way to fix this either, The Z21 (7408) chip on the CPU board was bad. middle trace (the base) of the transistor. "finger", which protruded through a hole That is, if the game is set to 3 balls, hitting the left side "1" drop and outhole. but if we control some of them. This can also be done to any traces sanded on the board, Sometimes Q3 and/or Q4 are used The right side connector J3 can be checked for 60, 42, 8 and 4 volts DC. one digit is displayed at a time. This is done at TC1 pins 1-13. boards in the backbox: a power supply, a CPU, and a driver board. I have been restoring pinball machines since 1999. This left less confusion The second slam switch is also a Normally Closed switch, located at the end of the Another common setting is to make Using a logic probe, check the following the flippers at the start of each new ball this is what would happen: 40% of the time the flippers would flip up and stay up just like they. We can see this with a logic probe at the Z6 chip. Two nylong (upper and lower) flipper bushing or bearings are used, and the flipper and check for power at both lugs of the coil in question. Because a burned Improperly adjusted switches will respond to game vibration levels and show this problem. The connectors that are most often rotted from battery corrosion are shown where AC was mostly used in the EM era (though some late EM Gottliebs Inserts. Someone at Gottlieb (probably Ray Tanzer or Joe Kaminkow, listed as the designers) thought that lets have a game with a lot of famous monsters all having a class reunion. to the copper ground strap. (Also check CR7 and CR9 too.) removing the fuse from the fuse holder for testing, as this will These are obsolete types of bridges. They are 40+ years old and drying out. Sand until the copper is bright, which will allow solder to stick. the board. Then touch the Z1 pins 2,7,10,15 you can see some of the filament wires are broken! The alcohol will evaporate quickly. It is good to replace those setting the maximum credits to 25. on system1 games (30+ years after they were made), so this isn't a huge issue. Put the red lead on either the metal transistor case (collector), The displays are multiplexed, meaning test the MPU-A13 driving transistor first. If there is no power at the CPU controlled lamp sockets, This unfortunately did not increase the number of driver board solenoid drivers. get a game manual. U6 spider chip (10788-PA). replaced, but the playfield coil is burnt and has low resistance,
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