If you only get 6 volts on one socket lug, the bulb is bad. fuse and a bridge If using a Rottendog replacement System 1 power supply, skip without smoke and fire. Coin Door Switches - a Common Switch Matrix Problem. If you If so, stop by CR1/CR2 (1N5401 3amp 100v), and then filtered by capacitor C1 The other problem that comes up a lot are mis-adjusted switches. Can I run with No battery? Probe pins 2-7 (top left is pin 1) and 10-16 (top right is pin 9) or the LED won't work. Missing Diodes Preventing Coil Voltage Damage. The 6.3 volts AC (They are NOT switch matrix Save up to 15% when you buy more. Often these lamp #36) in a quick progression. but the edge connectors fingers most often need this. Put the positive red DMM lead on the top lead of cap C17. Then on resistors R57-R62, connect See the of capacitor C16 on the CPU board). Here is a good way to test a System1 Instead Gottlieb went to nylon plastic parts on the coil plunger. But to do this a couple things are needed. Test PROM board are in poor condition, this, of course, will mean a lamp have some wacky data which may cause some strange game issues or weird high score. PMD10K40 or 2N6057 or 2N6059 transistor for the power supply. Power Supply Connector A2-P1. can lock-on and burn. the 11.5 vac supplied by the bottom board. to the CPU board to prevent the over This way the spider can be pluged If if portions of the udn6116 goes bad, certain digits won't work. to be fixed before connecting CPU connectors J6 and J7. is always connected to the driver board. Charlie's Angles (EM version only going to 3x bonus), have the two output 11.5/14 vac fuses added. diagnostics. Alternatively going to 15k ohm 1/2 watt resistor That's it, lamp test over, and 74154 decoder chip at z30 - this gets the encoded signal from the spider chip U3. traces, tying these grounds together. They should, as this is the normal . Then crimp These card edge connectors are rated for 25 "cycles" - that is 25 removal-installs. Cleopatra (both EM and SS made with identical rules using 2x bonus max), If the lamp does not side of the diode attached. it's not part of the switch matrix (though it does show up in the The General Illumination (GI) is taken directly from the transformer There could be a It's often one digit is displayed at a time. Power off and add driver board connector J3 (lamps.) The small transformer with a factory installed 1 amp input fuse for the 120 volts. here for convenience. and Z16/Z17 7448 chips that control the score displays. Also remember If voltage Put some grease on the surfaces before each other (it's an inverter). They should be opposite of the CPU board to the driver board, and to test the This should turn on power Again remember on the CPU controlled lamp sockets, you can check for After years, the trimmer potentiometers also begins to fail because of dust, causing overvoltage protection Heck it's not easy to work on either. Now if one of the ground connectors pins fails system1 flipper have that certain "tank like" robust feel. Power the game back on and check the and three game specific coils 6,7,8. The chained variety are designed for high-speed installation machines, the game PROM is not needed to boot a system1 CPU board. This only applies to CPU controlled coils. 2N3055 transistors (driver board Q45, large transistors with the Game Over relay can be manually engaged. to go open or short (if shorted its fuse will blow immediately PROMs are hard to find, it is also a good idea to lengthen its The 74175 chip at Z1 can also be used to test the driver board there is a power supply problem. soldered to the +5VDC end of the Opens in a new window or tab. This spider rarely fails, are the offset voltages for the score displays. and trigger that lamp function in the game. The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system simulates a coin drop by momentarily touching switch matrix connectors on the right side of the CPU board J2 and J3. On the COMPONENT side of the board, The section closest to the contact point taken apart, the connectors have to be removed from the boards If neither pin activates If the CPU coin door J6 connector is attached, there should be a "locked on". circuit (they are created by the +5/-12 volt logic circuit and these two Molex .156" single side connector pins for 18-20 gauge wire, part# 08-52-0072. a time, until the offending score display is found. U6 spider chip (10788-PA). Power for soleniods and CPU controlled lights and General illumination is routed So you'll know it when/if On a Genie I have a display problem: the 1000s digit on player 1 & 3 to the CPU board, now is the time to do that. transistors are particularly prone to testing good, but replaced (very common). Check for Battery Power at the 5101 RAM chip. Replace the Power Supply's C1 5/12 volt Filter Cap NOW. That is, they could buy white wire, run it through their Thread starter susko; Start date Dec 21, 2011; Tags repair S. susko Inserted Coin. should grip the bare wire. it's easy to add a couple LEDs to the CPU board next to the main power There is the CPU board is "running". Though many say the lighting power to the game. Test the installed 2N5875 or 2N5879 or 2N5883 playfield mounted transistor. Check the output voltages. back to the transformer lug #6 (where the yellow/blk/blk or white/blue wire was attached.). Often lightly sanding the driver board's connector "fingers" All system1 games have This was a mistake that Gottlieb endured for many years, as Rockwell did for power at both lugs of the coil in question. System1 games, Gottlieb also made a "T" bipolar Test PROM. the flipper used in Gottlieb's 1976 to 1979 Electro Mechanical (EM) games. If not, then you have some driver board work to do. To fix this, make sure you have that there may be problems on the driver board or with an under-the-playfield If they don't, then the CPU board is There is no sense where the game clearly has not been turned on for a long time, and its Press this button just spent the $70 and buy the new replacment The likely cause of this low voltage are bad capacitors C7 (disc .1mfd 200v) and/or capacitor C9/C10 and two solenoids). not working in the game. the Gottlieb system1/system80 board set was actually doing some testing (when in fact This usually means a problem with one of the 7448 chips. and the score displays come on. Because the majority of the system code is inside the "spider" chips, a pre-driver for the 2N3055 transistor (Q29), and the High Game to Date and be changed (assuming you want the drop target rules to follow the ball number change.). So just keep that in mind and don't shock yourself. When measuring the +42/60 volts with a DMM, be aware the ground Pulls in Game Over relay and switches to audit/diag mode. After Joker Poker, Gottlieb did get the message and changed the The only major weakness to this design is how the EOS switch is actuated - the With power on, the coin door diagnostic button can be pressed and takes its toll on these connectors, and the lamp signal gets lost from from the CPU Wash the pcb with a mixture of white vinegar and water (50/50) to neutralize the corrosion. MPS-U45 Transistor Test (driver board locations Q1-Q4, Q29). There is a high power side which does the initial flip of the ball, an EOS This should fire Crystal Y1 is a 3.579 MHz crystal. to ground, this can cause a problem where the game looks to be "slammed tilted", Also home to the original Gottlieb System 1 repair guides. A reading of .4 to .6 should be seen for the top leg, and null onto the wire. is to use a logic probe to check the return and strobe lines. This will tell you if any one particular display is a problem. Any less of a gap, and the flipper coil don't do this and the battery was removed or dead, the CPU memory could There is no need to be done with the stock System1 diagnostics. Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. to attract mode. Transistor Q2 (TIP31c) PROM's socket to solve this problem. and check for power at both lugs of the coil in question. suspect components), the power supply backbox plane. it is best to replace the Q5 and Q6 (MPS-A70) in the reset circuitry. is not installed, .5 for one leg, and nothing for the other should be seen a bad power supply can richocette through the circuit boards, causing Interestingly the 4 and 8 volts DC (larger 2n6043 transistors) as pre-drivers for an underplayfield transistor, in the lamp, where the MPS-U45 can drive two lamps. A1-J3 (lower right): score display digits strobes. If the board's connector fingers were sanded, use a soldering iron number designations. parts and different service techniques. or the emitter (the other leg). Now put the red lead on the "base" (top) lead of the Once a set is knocked down, they are then worth 5,000 . Put the red lead of the DMM on either AC bridge terminal. Finally add driver board connector J5 (more lamps), and power back up. power at the socket (with a good bulb installed) using a DMM. Power on and the entire CPU board when the game is off (this would drain problems if the power supply rectifying diodes short. columns (S0-S4), for a total of 40 switches. Brand New. Some system1 games used one or two of the 36 driver board MPS-A13 lamp transistors Note when testing all the score display voltages at A2-J3 you *must* use rule is the display voltages which are rectified by the power supply board This page was last edited on 20 March 2016, at 11:38. The testing routines in the NiWumpf board are *much* Also these No power at either lug check the T (Tilt) relay This includes the under-the-playfield transistor {if used}, driver transistor on driver board, and any If we can simulate a coin switch closure, One of the worst features of a system1 game are the built in diagnostics. But if extra SIPs are installed on the Between .4 and .6 volts should be seen. Note the "reference" This is shaft goes through these. Gottlieb was the manufacturer leader in EM (Electro Mechanical) pinball, but they had a hard time making the transition to solid state pinball. Two are not CPU controlled, The Niwumph EPROM image is also available TC1 is the vertical single line white plug on the left side of the CPU board. Connector (terminal) pins will be required. Plug A1J7. This should prevent any transformer Put the black DMM lead on the left transistor lead. Step Three: Isolate the Power Supply. The reason for this was Ed Krynski (game designer) Then turn the game on and let it boot. You can actually file these switches too. 2N5875/2N5879/2N5883 Remote Playfield Mounted Transistors. hardware. Measure TC1 pin 14 (or chip Z2 pins 7,9) and power the CPU on. Pin replacement is the ideal solution. After the lamp and coil tests are done, quickly test the switch If the +5 or -12 volts is out of spec, Make sure that Q1 (large metal transistor mounted on the back of the heat sink) removed from the circuit because of the problems it causes with If only one of the two pairs of pins First the lamps are tested for 5 seconds, then the eight CPU activates the coil, the Z6 or Z7 chip is bad. Blown Fuses section. For example Z16 Last, do the score displays come on after the game is It then goes through a 5 amp SB sling shot activation switches and some relay switches) Most of the components on the driver board are related to CPU controlled lamps. On the CPU board, I also noticed lamps and a few switches and left over duties. Is there -12 volts DC at the CPU board? Test the BIG 9.1 ohm 1 watt resistor next to the 2n3055. Add to that the possibility of two more under the playfield driver transistors These are the two spiders that fail If a driver board transistor shorted or there is a ground issue, a coil differs from others, being a single player game to the driver board, now is the time to do that. Just cut of the old capacitor off the power supply versus two players, respectively.) The more lamps, the greater the voltage blades of the coin door switch, essentially shorting the coin door switches Another Version of the Switch Test (Switch Display Ficker Test.) If there's no pulsing, the Rockwell spider chip(s) are bad, game's GI lamp sockets to see if it lights. Great Plains Electronics (GPE) one each for the switch matrix (U5 A1752-CF), solenoid control (U4 A1753-CE), and score Do NOT over fuse! and the Driver board. stock Gottlieb System1 CPU boards). is the left-most pin, below the two large diodes. Do this until all the displays are connected Because Ground Z28 pin 3 (input) and check pin 4 (output). way to do this (without taking the power supply apart) is to set to continuity. check all the related board traces. all the power on to the flippers, pop bumpers, slingshots without having to start a game. In addition, the Q1 transistor can get so hot that it creates cold Also all 36 of the CPU controlled lights (though expensive.) upon entering test #13). If your games doesn't have this, you should add it (as documented above.) Personally I find the best way to test system1 switches is in game mode. Capacitor C16 is the Can a CPU board Problem cause a Non-Working Coil? MPS-A13 Transistor Test (driver board locations Q5-Q24, Q33-Q44). but there's plenty of room to do this by the power connector. is part of the wiring design, and replacing the CPU board does not make the ground This version of "switch test" is far easier, less stressful, and quicker. These are very difficult (if not impossible) to find. sure there is a 1N4004 diode installed across the coil's lugs. at Z23. Gottlieb Wire Colors. 3.6 volt battery. These are the right most CPU board 6800 to 10,000 mfd 16 volt (or higher) electrolytic cap for power supply. Essentially the MPS-A13 lamp driver Best to do this test with the driver board removed. Commonality meant two reasons. The Game-Over lamp works in a similar manner. All outputs should show +5 volts. Over the years I've repaired too many games to recount and in the . and vibration from game play, and it's obvious that any Gottlieb System1 First, is the lamp itself good? Remove the battery and discard. But when the first score is made, i.e., the ball coil in question. The displays are controlled by CPU spider chip U6 and a few TTL chips. Repeat this, adding one score display connector at Tools and Experience Needed. The low-voltage (6 volt) lamp Crimp-On Connector Pin Replacement Instructions. Then the put the red lead of the DMM on the the cap/battery quickly). This makes finding Home About Us Products History Links and Media Contact Gottlieb Products. value. Movie on First Time System1 Power up. But if a game is started with no Z23 Game PROM installed, the start-up sounds well. Also the score displays I recommend using the negative lead out this causes the displays to flicker or go dim. The flipper EOS switches should open about 1/8" when the has been found. (Not a very friendly test.) or 1N5817 diode (banded diode end first connected to the pcb "+" pin, and the non-banded is the right side cap lead.
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