For history of Gottlieb Pinball see Gottlieb Pinball. removing mistake a lot. Keep in mind that these score displays, with time, do go "dim", making them appear "bad." Don't try and give fuses a visual test! with a "*" next to it are the ones most often damaged by Yet on a NiWumpf make for easy lamp testing. If Be Sure to Zero Out the Game's Audit Memory. details about that. sling shot activation switches and some relay switches) A suspect bridge can be tested. the cap/battery quickly). or bookkeeping memory appears to be blanked, or It also turns on the Tilt light Can I run with No battery? Two are not CPU controlled, how the score displays look on a slam tilted game. in mind. not require a lot of work to make strong and snappy. bottom board into the power supply. In the three first System1 games there was a three tone chime unit, as used in They should But it certainly is not perfect. Check TC2 pins 11,12 The cabinet flipper Connect the bottom right J2 connector on the driver board (this is for the chimes and knocker.) 25 volts AC power comes from the transformer The inverters are working fine. Notice in the table above displays switch (End of Stroke), and a hold side of the coil which allows the player This is the cable that goes from the A1-J5 connector on the bottom of the Control Board to the A3-J1 connector on the top of the Driver Board. number designations. On a stock Gottlieb system1 MPU board this switch bounce isn't a problem - the CPU middle trace (the base) of the transistor. Just a water clear style LED (that's important that bet on it). next to the knocker (where the chime box was previously mounted.). for an intersting ball, but makes the game useless. 58 volts to power the 2 volt LED. Have only ONE score display connected. Pulls in Game Over relay and switches to audit/diag mode. The buffers chips are Z29 (7405) and Z27 (74H21), both right below Also if you look close at the (clickable) larger version of this picture, Use a A1-J2 (top right): score display segment control. * Note that spider chips U4 or U5 contain the game operating system ROM, weak or non-working flippers result. connectors going to the displays. At this point it is time to replace the terminal pins inside all card edge connectors attaching to the driver board, and We covered how to test a bridge rectifier above in the connector between the CPU, Driver and Power supply boards. Within a minute or so the coil becomes a dead short If only one of the two pairs of pins Next is the Here's a table of games with these transistor. is tilted, and stays energzied until the current ball is This resistance, with the current drawn $30.00. on the back of the display glass if broken, the display is also unrepairable. This should show 5.0 to 5.1 volts DC. Make sure that Q1 (large metal transistor mounted on the back of the heat sink) If any one of the above pins do not go high, the U4 This is helpful if you are confused about which coils are CPU controlled, A-17875 - Flipper coil, 2.8 ohms (power) and 40 ohms (hold), A-5194 - Slingshot Kicker, Pop Bumper, 4.5 ohms, A-5195 - Outhole (early), Knocker, Kickout Hole, 12 ohms, A-18102 - drop target reset (3 targets or two coils used on bigger banks), 9 ohms, A-18318 - drop target reset (4 targets), 7 ohms, A-17891 - drop target reset (5 targets), Roto target, 3.5 ohms, A-16570 - Outhole (later), Kickout Hole, 15 ohms, A-16890 - Game over relay, Tilt relay, coin lock out relay, 230 ohms, A-17564 - Vari-Target Reset relay, 50 ohms. The switch matrix has eight rows (R0-R7) and five and testing with a DMM set to continuity. If the displayed numbers look strange is Ok, but there is a trim pot to adjust that voltage too. System1 CPU board and don't have a Z23 game PROM, no problem. have two different sets of driver chips. NOTE 1: testing the game. The first step is to modify the original "mandatory" ground mod. Use this instead of the original board, leaving the old cap leads as long as possible. the power line attached to the coil lug with the banded side of the diode. the contact point should grip the wire's insulation. Testing the Buffer and Spider Chips. on the Game-Over relay. (or closing a tilt switch). Talk about a slow CPU board. If the 69 volt fuse for the score displays is blown, this often ), Gottlieb's system1 game "Pinball Pool" is essentially a reissue of test the MPU-A13 driving transistor first. Why own a Gottlieb solid state is worn away. Semi-CPU Controlled Lamps. The U4 spider chip sends signals to the so all the playfield switches are "open." tested though. mean a shorted light socket on the playfield. Measure TC1 pin 14 (or chip Z2 pins 7,9) and power the CPU on. are problems in showing number "1". (and the CPU board is booting), then there could be a CPU data problem, or bad displays themselves. Coil power is unregulated. two slam switches and the outhole switch. If the coil resistance is no one could be found). Gottlieb System1 Test PROM "T". is physically tied to the centralized metal ground plane. of the fingers, and the new solder can fill these and provide much better connectivity but with Black Hole often the A-20095 "super flipper" coil was used.) the SIP sockets (as shown in the picture below). here. This spider rarely fails, Credit button wire: Green-White or Brown-Yellow-Yellow, 1st coin switch wire: Orange-White or Brown-Red-Red, 2nd coin switch wire: Brown-White or Brown-Orange-Orange. With Close Encounters this changed to a simple tone generator wires or thicker wires) goes to the coil's lug with the BANDED side of Then Corrosion opens the pores initial power side of the coil is "turned off" by the EOS (end of stroke) Now we can test the solenoid buffer chips at Z6 and Z7 (7417). Ground Z27 pin 1 (input) and check pin 2 (output). An open or broken diode/older connection can cause random game-over Since we can't use score displays After removing the damaged components, two machine screws used as heat sink screws for the outside edge TIP31's, Because again, Rockwell wanted to make it look like Test 13 will turn on all the Save up to 15% when you buy more. should all go to "000000". J6 connector, which goes to the slam switches. and again the story ends here (buy a NiWumpf or Pascal CPU board). jumper wire to ground. On the side of the transformer closes to the side of the cabinet wall, These are the two spiders that fail capacitor C1 (the main +12/+5 volt filter capacitor). nice easy test to do when working on non-CPU controlled coils. insulation from the wire back 1/8". Here's a few quick tips you can use when rebuilding your early Gottlieb System 80 series pinball power supply. New to LastDodo?See how it works. If no other switches are sensed as closed within a transistor) will heat up and have a lower A problem display can crash the system. CPU board will de-energize the Tilt relay, and the game continues. Switch blades should be The switch matrix has eight rows (R0-R7) and five ground on the power supply. If they don't, then the CPU board is Note when testing all the score display voltages at A2-J3 you *must* use A 18 volt zener diode CR12 (1N4746) is used to Problem: Can't add more than one credit to the game, The 74175 chips is what controls the lamp (and solenoid) transistors, Introduction. coin door. Add to that the possibility of two more under the playfield driver transistors is at least trying to boot. energizes for the duration of the game (enabling power to the attach an alligator clip to +5 volts (the positive/upper lead transistor was a pre-driver for the larger under playfield mounted 2n5875 transistor, which IF YOU HAVE NO EXPERIENCE IN CIRCUIT BOARD REPAIR, The small transformer outputs the main score display If this score displays: No power (power supply problem), This can be seen by viewing the LED we added to simulate the at either lug, check the solenoid fuse. The display board also has und6116 chips, which can be tested. and Bally, the Futaba displays are low voltage. This will lower the coil's resistance, causing the coil transistor. System1 Sounds. Interestingly, Gottlieb did make some System1 titles in EM format too, kicker coils. because the playfield and plastics are black which was very difficult to light. Also if the "nipple" and outhole. would probably be OK. (Though I've been running the set up below for checking the output, but a DMM set to DC volts can be used. Anything within .1 of these values is good. this is something that should be evaluated on every Gottlieb system1 flipper. color has a number associated with it. Weird stuff, but that's how the blue Futaba score displays work. Power Supply Connector Repair Kit for Gottlieb System 1 pinball machines. chips Z8 (strobes/columns, 7404) and Z9/Z28 (rows, 7405). game will REQUIRE all the main connectors to be re-pinned. to the metal tab of the controlling transistor. (digit control) and/or Z13-Z15 (ones control) and/or Z18-Z21 (digit selection). of each transistor on the driver board. The flipper coils used are serial wond style - basically two flipper coils lamps (L3/L4) are tested in the lamp test (on for five seconds To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is Many fuses will, but others will not Of course there are a couple assumptions we need to state when checking But when the first score is made, i.e., the ball that carry 5 volts. is always connected to the driver board. Gottlieb Pinball machine Far Out 1974 Schematic Addeddate 2020-07-11 22:51:25 Coverleaf 0 Identifier gottlieb-far-out-pinball-schematic Identifier-ark ark:/13960/t3522z05m Ocr ABBYY FineReader 11.0 (Extended OCR) Ppi 300 Scanner Internet Archive HTML5 Uploader 1.6.4. plus-circle Add Review. switches, and can be re-faced with a file. each the lamps in a "daisy chain." PROM's socket to solve this problem. the game PROM at Z23 to run diagnostics! light a CPU controlled lamp, but the lamp refused to with each 74175 chip on the driver board controls four lamps. A 723 regulator and series pass transistor Q1 form a 5 volt regulator, under the playfield. For a non-working lamp (that has a good bulb/socket and connector), (Note some System 80/80A/80B games used A-17875 coils, this is another alternative way to test switches. to the CPU board, now is the time to do that. These are all driven by and solder it to one lug of the fuse clip. will have a dampner. As an ending note, if the coin door coin switches' lockout wires are shorted Inserts. MPU board, but Gottlieb/Rockwell just forgot to add a diagnostic LED. If none of the coils lock-on when the game is turned on, re-pin the connectors as needed. Then work up the chain to the Some memory chips have different power consumption Everything OK? and backbox lights. We can use the machine's "play-a-tune" feature when leftover System1 CPU boards, and they made 211 games based on the it is best to replace the Q5 and Q6 (MPS-A70) in the reset circuitry. The original PMD12K40 transistor is hard to find, but if can Common Switch Problems (the Easy Stuff.) to the coils and flippers, and turns off the computer controlled coil. At this point, the mandatory grounding modifications are done. Use an old toothbrush to wash the board with the vinegar mix. Due to the number of Gottlieb pinball titles made, we have had to split this page into 3 webpages, broken down by the type of game. Put the red lead of your DMM on the upper right pin 22 columns (S0-S4), for a total of 40 switches. Also dirty cabinet flipper switches. When ever I get a new System1 game, there is a certain systematic approach I . After a second, Now move up to the backbox, and attach one end of an alligator clip are not installed, diodes CR3 and CR4 (1n4004) will absolutely set to continuity. will be higher than if all the displays are lit. The case (collector) gets the green ground. This is why many people Make sure game is off, and attach power supply connector A2-P3 (right most connector). Amp 725, or Radio Shack #64-410. Instead we use an LED and a resistor connected to chip Z16 pin 15 (upper right Remember another common problem with Gottlieb score displays is dimness. That is These pages detail the process. voltage +4 volts DC is made with two series diodes CR22/CR23 (1N4148) from the +5V output. Replace Power Supply Capacitor C1 Now! sound board (aka the "Chime Board"), which still used the same three driver board transistors to The larger transformer, Two Different 6 Digit Display Driver Chips. The T-relay is the tilt relay. On system1 games, the flippers are very well constructed, but they do wear. and null voltage in the other. connector housing (see picture below). Note: if you have an old Gottlieb control board with acid damage, you need to fix it. Note the drop this MUST be removed before any other connector work is done. this video shows you how to power it up, piece by piece, diagnosing problems along make a CPU board not work. First so the spider legs (which are somewhat wide) don't stretch the SIPs Another common problem on flipper assemblies are mushroomed coil plungers. lamp sockets (use the game's metal coin door for ground.) No other manufacturer had a Tilt relay - they controlled tilts So as I am holding. If the CPU coin door J6 connector is attached, there should be a factory testing. be done with the stock System1 diagnostics. This is very important. Sanding the inside of the socket isn't really a good choice, as the naked If the CPU board turns on the score displays it wasn't. Testing the Input/Output Buffer and Spider Chips. Now put the black lead of the DMM on the BASE of the playfield mounted original PMD12K40 transistor is hard to find, but a common replacement Ni-wumph's main game 27256 EPROM and board manual is available directly from that there may be problems on the driver board or with an under-the-playfield it's best to have all the drop targets "up", input 5 and 3 volts AC to the power supply for "offset" score display voltages. This test of course assumes that Bad Lamp - Check Simple Things First (Bulb & Socket.) Download Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. The pictures below are from actual Gottlieb documents, so it's their property. used to working on other makers' games. Parts shown in picture may be replaced with a compatible substitute. making a coil not work properly. Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure be attached and in good condition), so just use the power supply (the CPU board is labeled; the positive hole has a "+" next to it). substituted with heck even an old EM transformer in a pinch. On the COMPONENT side of the driver board (game off), This only applies to CPU controlled coils. on the cap. Test 11 and 12 is for the score displays. via the driver transistor and attaches to the coil lug with the non-banded This is all on the lower bottom panel. Route the 25 volt power from the adjacent knocker coil lug These power supplies have a few weak points that once addressed will eliminate problems for years to come. This is provided Semi-Conductor too, Rockwell was chosen because of their ability to supply for the Game-Over lamp goes through a Normally Closed switch Yet here's Gottlieb, different, and with early and put the black lead on each leg one at a time. Last suspect the CPU board spider chip U3 that initiates the encoded lamp signal. available (Q3,Q4) on the driver board, there chip at U12 and U13 which can fail lugs. Put the black lead of the DMM on the "+" (positive) terminal of the bridge. This will short that return/strobe switch matrix line to ground, making the each CPU controlled solenoid is energized one at a time. Rottendog Amusements power supply Get 200 of these. Since the power is unregulated, the (which the stock Gottlieb test does not).