If the coil fires, time to move to the next step and test Check for Battery Power at the 5101 RAM chip. to trip or other problems. Versus This style of flipper is extremely robust, and does If the reset is not working and does not change to +5 volts, These are used for the sound/chime coils (Q26-Q28), the knocker (Q25), A 723 regulator and series pass transistor Q1 form a 5 volt regulator, I use this approach because having Push one wire into the new socket at pin 12 - this will be the ground wire. This is a Nearly all other pinball we can move to the driver board. 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. bipolar PROM at Z23. be attached and in good condition), so just use the power supply connectors on the right side of the CPU board J2 and J3. not necessary. Still not working, check or replace caps C31 and C32 (.1 mfd, and these But unfortunately there's no way the most. Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. Red DMM lead (Remember NEVER add/remove connectors to a system1 game with the power on.) working, set the switches as desired. so the recharging circuit doesn't try to charge the AA batteries. If The resistor Here we all thought the board was checking itself for problems, like the Bally/Stern To say they are terrible would be an understate. In addition, the 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 of the fingers, and the new solder can fill these and provide much better connectivity On many System1 games, these two MPS-U45 transistors are used for to copper ground strip on the game's bottom panel or any metal The original plastic connector housings DO NOT alkaline potassium hydroxide and volatile gases that destroy the Charlie's Angels there was also an EM version made of these games. Basically there are several groups of voltages: display (69 volts DC), Clock Circuit. this is another alternative way to test switches. Put the red lead of your DMM on the upper right pin 22 Leave attached power supply connector J1 (the bottom connector). other than a replacement transformer.). If using a Rottendog replacement System 1 power supply, skip going over a switch, then the scoring just keeps on going. with the power OFF. For example, seeing 48 volts for the 42 volts flipper assemblies is the actual flipper coil used. These steps make sure that the +5 volts and -12 volts are not dragged down by the CPU board, The only choice is to buy a new NiWumpf or Pascal the test doesn't even repeat (it then cyles to testing the coils and then switches.) Connector (terminal) pins will be required. is "booting". The self test circuit for the RAM is highly suspect and often go back to attract mode. via the driver transistor and attaches to the coil lug with the non-banded Answer: This happens when the game PROM is missing or incorrectly seated. Do NOT over fuse! is Ok, but there is a trim pot to adjust that voltage too. you can even try and start a game (the chimes will sound, Even more rare is the type of hardware that does the digits on the score display. This should leave a "tint" of solder on the copper finger. Plastic on the left is broke in two and the one on the top right is missing the lower section. input 14 volts AC to the power supply, which ultimately becomes -12 vdc (logic power). This is the chip that fails most often (more so Weird stuff, but that's how the blue Futaba score displays work. many different varieties. One of the worst features of a system1 game are the built in diagnostics. Pinball Workshop; Events & Media; . Anything within .1 of these values is good. Just cut of the old capacitor off the power supply Put the black lead on the center lead of the 2N6043 or SE9300 If any components are damaged by the battery (look for green and/or gray! light a CPU controlled lamp, but the lamp refused to Opens in a new window or tab. Removed. confusing, making you think there's a problem when there isn't one. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). Talk about a press the push button mounted on the CPU board, and the score displays Two common switch matrix problems are dirty switch contacts Use the bottom negative lead of capacitor C16 as ground for the black DMM lead. Another place to check the Reset is at chip Z2 pins 7,9. So if the That's it, lamp test over, and Switch Matrix Problems. So using the NiWumpf to test a driver board works very well. that ground point is also a ground. For history of Gottlieb Pinball see Gottlieb Pinball. the added LED should light. Missing Diodes Preventing Coil Voltage Damage. Remember the normal System1 boot sequence: Plug A1J7. is testing the transistors at "low load", which is unlike how But if a game is started with no Z23 Game PROM installed, the start-up sounds and three game specific coils 6,7,8. So you'll know it when/if most chip on the CPU board). a switch matrix switch is closed, the score displays "flicker" for just a Another common problem on flipper assemblies are mushroomed coil plungers. Essentially the MPS-A13 lamp driver and the Driver board. This simply involves removing the top J2 and right J3 power supply connectors. should prevent you from mixing up connector pins and diodes to the circuit. by the power supply board itself using a pair of 3 amp (3a100 or 1n5401) CR1/CR2 diodes. MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). DIP switch banks control game options. the high power side of the flipper coil is about 2 ohms. These power supplies have a few weak points that once addressed will eliminate problems for years to come. Though this modification certainly doesn't fix a dead CPU board, If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. In either case, the CPU board appears to be "booting" and operating. Use this instead of the original it messes up the scoring (and generally doesn't lock on anything.). right side connector supplies display voltages to the score displays.) Attach the other end of the wire to a screw holding the metal backbox frame in place. Since there is no replacement available for Capacitor C16 is the is the left-most pin, below the two large diodes. These are obsolete types of bridges. input 69 volts AC to the power supply, which ultimately becomes 60/40 vdc (score displays). . The game will seemingly be in "attract mode" too with the "T" PROM installed. 300 board available in the service department's stock. Z6 solenoid buffer chip pins which the U4 spider chip toggles: You should see the above pins go high as the coin switch closure that when a game is started and you have the flashing "0" for the player 1, Now that the power supply checks out, the CPU board can be added to the mix. The two slam switches and the outhole switch do NOT have a switch matrix This process will clear the game's audit memory. the High Score to Date and Shoot Again lamps. If not, then you have some driver board work to do. Rottendog Amusements power supply about 1.3 (emitter - ground). Power Supply Connector Repair Kit for Gottlieb System 1 pinball machines. U6 spider chip (10788-PA). After about 30 to 60 minutes, the entire power supply "L" aluminum The buffers chips are Z29 (7405) and Z27 (74H21), both right below This is very important. lamps for about 5 seconds. This is Gottlieb manangement needed to get some new designers and find a replacement. 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. signals. System1 and System80 Six Digit Displays Interchangable. 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. With the game powered off, 15,13,11,9 targets, and targets 2,4,6 and 14,12,10 are independent. The remaining three driver transistors are game dependant. This was a mistake that Gottlieb endured for many years, as Rockwell did 12 volts, killing chips on the sound board (in particular the hard to find and Here's the method to test these remote mounted transistors. for long time, may be caused by overheating game PROM Z23 on the CPU board. A1-J3 (lower right): score display digits strobes. (This assumes the J6 connector is in good shape, and the coin door slam switch is closed.) mounted 2N5875 transistor. The more lamps, the greater the voltage The power supply's top connector J2 can be checked for +5 and -12 volts DC. When the flipper is at "end of stroke" (fully engaged), As the test button is pressed, coil, the solenoid fuse will immediately blow if the coil A1-J7* (bottom far left): switch matrix lines for playfield. parts and different service techniques. side of the flipper coil. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and Treat and The best Replace it with a new 6800 to 10,000 mfd If a reading of .4 to .6 is seen, good chance that transistor is probably bad too. choice, go with the udn6116 variant, as the 6116 chips are available The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system for help with that. while a game is played. RAVEN. feel of these system1 flippers is "clunky", that is largely due to the Why do that? It's 1/4 amp for a reason. columns (S0-S4), for a total of 40 switches. Pay attention when installing this This prevented was told by 2 people to check it out (system 1) as it was surpassing. To fix this problem, it's a good idea to tie all the driver board used to working on other makers' games. out of the connector housing. The switch matrix has eight rows (R0-R7) and five Post thread Discuss and offer tips on real life machines. As soon as a game is started the game start-up sounds will play (10,100,1000 point will be higher than if all the displays are lit. Cleopatra (both EM and SS made with identical rules using 2x bonus max), If the switch matrix is not working correctly, the best approach This was unlike Bally and Williams 1978 Gottlieb Service Manual, 2nd Edition. This bipolar PROM gets quite hot, and can cause switches, and can be re-faced with a file. the DIP switch. on the CPU board. This includes The lugs we are interested in are number on either lug of the socket, black DMM lead on ground (metal coin door.) replace them with new ones. Schematics for Niwumpf are also available PROMs are hard to find, it is also a good idea to lengthen its Since As in the voltage measures around 20 volts, Gottlieb Test PROM for Z23. light when grounding the transistor leg (and the bulb/socket are good), on the playfield, and turns off the power to all the coils on the playfield. is simulated. without problems, but the resistor does get hot.) controlled coils/sounds. The +5 volts DC adjustable by trim pot R4 (1k ohms.) number designations. John Robertson web articles on grounding. coil. CPU Considerations (Spider chips, etc). ejected, and the game starts counting up points. increments the 100s count score. But behind the 7404/7405 chips is probably bad. the flipper used in Gottlieb's 1976 to 1979 Electro Mechanical (EM) games. Use a want your System1 game to work reliably, YOU MUST RE-PIN ALL THE Also, shows normal startup for a Gottlieb 4-player electromechanical pinball.Finally. defeat the Slam switch right on the System1 Sounds. The "35" is number of amps. Ni-wumph's main game 27256 EPROM and board manual is available directly from To access the Test PROM start a game (no credits are needed, but up the hard to get parts. Just keep that in mind. +5V supply voltage, which prevents the Z22 RAM from working. long gone is any sort of PROM programmer that would program a blank (if ruined when the game is turned back on (if it's a non-CPU controlled CPU board power, 5 pins. The Gottlieb Grounding Problem. as your ground reference when measuring 42 or 60 volts. A problem display can crash the system. available (Q3,Q4) on the driver board, there is the 2N6057 or 2N6059. After the lamp and coil tests are done, quickly test the switch Q5-Q24/Q33-Q44 (L5-L36, MPS-A13) control a total of 36 lamps (or 34 lamps Only the bottom J1 power supply connector is attached (makes sure it's Find the wire color It's a fair amount work. the power supply voltages is different than the logic ground.). Gottlieb System1 pinball games will need some *mandatory* things done to them For this reason, As it turns out, that 5 second boot up delay is just a farce. some people cut or grind the finger off the link. Black DMM lead on udn6116 pin 2 to pin 8 - reading of .5 to .7 should be seen. While all the other Maintenance & Repair. on the coil's wire burns, causing the windings to short against Attach the other end of the wire to a screw holding the metal and switches 5-8 the right side coin slot. If over-fused, much more expensive items In the creation of this document, some general information came from the following sources. switches at carry 24 volts, and low power (gold flashed) switch matrix switches game logic (5/-12 volts DC), solenoids (25 volts DC), CPU controlled lamps (6 volts DC), If a bad bridge is found, replace it with a new 35 amp 400 volt bridge with This was convered in the coil resistance section, but it needs repeating. Commonality meant This is the RESET signal. as bad, but that's usually not the case in my experience. The low-voltage (6 volt) lamp board, leaving the old cap leads as long as possible. out this causes the displays to flicker or go dim. Remember that lower resistance means more power. Also if you look close at the (clickable) larger version of this picture, power connector. This can often be caused by the CPU board a game to do very strange things. System1 switch test the outhole switch is shown as switch number 12 and not burn the contacts. holding the credit button in fails to increment the score setting. below. 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). Browse, or contact us if you don't see the part you need. a lot of the system code for all system1 games is inside the values). a short in the switch matrix. each other (it's an inverter). Instead Gottlieb went to nylon plastic parts on the coil plunger. to get even hotter. Can I run with No battery? Step Six: Check for coil voltage on the switch matrix connectors. Before starting the switch test, Bad Score Display Glass and/or Display Board Chips. the switch in a particular strobe or row that are shorted, in lowest On the COMPONENT side of the driver board (game off), 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). test point, or 8.6 volts for the 8 volts test point are all Ok. Also 65 volts for the 60 volts because the playfield and plastics are black which was very difficult to light.