added pin blockers inside the housing at pins 1 and 9. Note: if you have an old Gottlieb control board with acid damage, you need to fix it. the user wants to proceed. a rather rippled +5/12 volts (which it does). NOTE 2: Any transistor that tests "bad" should also It pulls in during game play and bookkeeping. Turn the power off and get ready to test some voltages at test connector TC1 and TC2. the digits on the score display. Optional: Attach the CPU board connectors A1-J2 and A1-J3. Use a jumper wire and connect one end to chip Z8 pin 4. is tilted, and stays energzied until the current ball is "Daisy chain" the 25 volt DC coil power to all three chime coils' To zero out this memory position, pretty common on system1 CPU boards where the trace breaks where it meets the The Flipper EOS Switch. From the table above you can see that any 74175 chip on the driver Because again, Rockwell wanted to make it look like to. The Gottlieb system1 sound board was located in the lower cabinet right Was able to clean the The problem input 11.5 volts AC to the power supply, which ultimately becomes +5 vdc (logic power). setting the maximum credits to 25. The majority of the kits and parts are for solid state games from the late 70s to mid 80s . Gottlieb System 1 Pinball Machine Physical Dimensions; 3 Technical Info 3.1 Recommended Documentation . Gottlieb System1 (and System80) blue displays are made by Futaba, and are Generally if the item being controlled was a ball kicker or a drop target If there is no input fuse for the 120 volts going to the small A reading of .4 to .6 Z6 pins 1,2) should fire its associated coil when attached to +5 volts. Best to do this with the driver board removed. game off and remove all display connectors. suggested parts & repair sources web page. For this reason it's a good idea to and switches 5-8 the right side coin slot. The Rockwell PPS-4/1 and PSS-4/2 system was a 4-bit parallel processing system It will go through the audits and diagnostics to the CPU board to prevent the over a bad power supply can richocette through the circuit boards, causing The flipper coils used are serial wond style - basically two flipper coils Note remoted mounted (under the playfield) transistors are not used in red/green/green wire goes to the 1000 point chime coil lug. This test will tell the transistors Q25-Q32 to activate its coil. means 200 volts, or "04" means 400 volts. as facing the power supply board. suspect these two chips early in the process, as people make the connector on the playfield, and turns off the power to all the coils on the playfield. Note the immediate "slam tilt" mode causes the score display to "strobe." press the push button mounted on the CPU board, and the score displays This is helpful if you are confused about which coils are CPU controlled, traces, tying these grounds together. when hooking up a new switch (how is the diode wired to the switch? Personally I find the best way to test system1 switches is in game mode. This is definitely a bad thing, but should be kept Problem: Another link in the chain is the cabinet flipper switches. You can actually file these switches too. So for certain situations, test #13 is worth the trouble. There are multiple problems with ground in System1 games. Mis-Adjusted Switches. The CPU board will boot up fine without the Z23 PROM. too. If not, the bulb or socket (or socket power) are bad. If the CPU board turns on the score displays (Note some System 80/80A/80B games used A-17875 coils, sound board, which still used the same three driver board transistors to If a fuse is blown, just don't replace it (just yet). Between .4 and .6 volts should be seen. to make them a reliable system. If the metal pins are green, may never engage the low power side of the coil, burning the flipper game on and check for 42 and 60 volts. on with a dead-shorted coil, this will blow the same driver transistor(s) again strip (color 54. If you only get 6 volts on one socket lug, the bulb is bad. will have a dampner. heat and more current draw. The original Gottlieb System1 Game PROM is a bipolor PROM with a 74175 Chip Test (driver board locations Z1-Z9). System1 and System80 (six digit) displays are interchangable and compatible. Only the bottom J1 power supply connector is attached (makes sure it's power-on, score displays dark, after 5 seconds the two under the playfield relays "click" better in a lot of ways than the original. the game, a reading of .5 for each leg should be seen. 16 volt or higher capacitor. See the Gottlieb did update the new Can I run with No battery? First so the spider legs (which are somewhat wide) don't stretch the SIPs A good #44 or #47 bulb will show Once the ball hits the outhole switch, the making more work for yourself. check for these diodes (as the driver board could have been swapped "taps" (solder lugs). Still not working, check or replace caps C31 and C32 (.1 mfd, and these Connect the bottom right J2 connector on the driver board (this is for the chimes and knocker.) After checking the values of the resistors, Note what the fuse does by the CPU board. Use an old toothbrush to wash the board with the vinegar mix. you do any significant work or worry with the machine. 5 volts AC from the transformer is rectified 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). with a "*" next to it are the ones most often damaged by and remove the excess solder. originally used crimped-on terminal pins, this job is fairly easy! Also if the "nipple" want your System1 game to work reliably, YOU MUST RE-PIN ALL THE Molex .156" Trifurcon connector pins part# 08-52-0113. and fix both problems below. 4 ea. to the non-CPU controlled coils like the pop bumpers, slingshots and flippers. If neither pin activates here. YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! The chips are called "spiders" because they look like a spider with many legs. PINBALL POOL. Neither is the Q (Game Over) relay, which is already energized So take 60 seconds and check all the coils' System1 games, Gottlieb also made a "T" bipolar Test PROM. and vibration will close the switch, too wide and the switch may never close. with the green ground wire towards the left. bottom board into the power supply. If the system1 game has a sound board, this needs a common ground too, back-up capacitors, the minus and positive leads are often not labeled Because of this, it is a good idea to check which driver board Another substitue for the 2n5875 is the MJ2955, which is an inexpensive alternative. This can often be caused by the CPU board This sound board ground connection is handled by two zinc-plated mounting screws. code in 2716 format and use the adaptor board. Since we can't use score displays way back to the CPU board. Remove the wire from lug #6 (either yellow/blk/blk or white/blue), (Also check CR7 and CR9 too.) You will need the game manual to know how a playfield is wired 8 volts AC power comes from the transformer today? Unregulated voltages (42/60 volts) can be higher than expected. built-in diagnostics. red hot until it burns like a fuse, and could damage the CPU board too after 5 seconds of power, that is a good sign that the board the ones we can control, it will probably be OK for the rest. Support this Pinball Repair Website! assembly (blue arrow.) help (the oil swells the gasket, forcing the metal pieces together.) For this reason I highly suggest using a battery on all system1 MPU boards. Ground Z28 pin 11 (input) and check pin 10 (output). is needed along with the LED (flat side of the LED going to ground.) I've gotten the itch to add LEDs to some of the system1 circuit boards. Sometimes even the 5 volt transistor Q1 can fail. done all the mandatory ground modifications outlined in this document. for the input 120 volts. SINBAD - Solid State. but they are not GI lamps. Note the drop The computer can scan the strobe lines and look for a closure through well. Go. Two are not CPU controlled, parts are replaced, be sure to use a DMM set to continuity and The slam switch or outhole switch will exit the "game" (test) mode and here. The only thing not tested on the bench is the U6 spider chip Change Plastics. available (Q3,Q4) on the driver board, there lamps and a few switches and left over duties. These are very difficult (if not impossible) to find. especially if it is the "newer" system1 sound board. Transformer, bridge rectifiers, fuses in the bottom of the cabinet. Problem: Game goes to "GAME OVER" during play for no apparent reason. Unfortuantely the U4 spider chip is not available, and the Gottlieb's System1 series consists of sixteen games including Cleopatra, Sinbad, Joker Poker, To replace the original battery, add a remote three "AA" battery pack and a 1N4004 And the NiWumpf display test also tests the 4-digit ball/credit display Replace it with a new 6800 to 10,000 mfd Also set the CPU board DIP switch as follows: Adding +5v and -12v Power LEDs to the CPU board. Hand Crimping Tool: Molex WHT-1921 (part# 11-01-0015), Molex part# 63811-1000, Display output was controlled by the each transistor leg should be seen. are not installed, diodes CR3 and CR4 (1n4004) will absolutely the connector from power supply A2-P2 (top most connector) to CPU board A1-J1 (left The large transformer outputs power for the solenoids (24 volts), diagnostics. Tuukka Kalliokoski web articles on system1 overview. I also buy pinball machines! exiting diagnostics (or power cycling the game), going thru solenoids. solid state pinball system, as the low-voltage score displays lasted much longer and the score displays come on. (and the newly mounted chime box). attach an alligator clip to +5 volts (the positive/upper lead identified. the J3 power supply connector. J.Robertson is currently testing a modification the driver board, see two steps below). last spider chip (U3, also a 10696-EE chip, same as the second CPU processor at U2) was used for Clock Circuit. 35 amp 200 volt lug style bridge rectifiers (for the bottom panel have built-in ROM software. back to the CPU board, and power up again. Though not as common of a problem as a driver board issue, But instead of using diagnostic test #13 or starting a game, 2N6043/SE9300/TIP122/TIP102 (NTE261) transistor for driver board The first step is to modify the original "mandatory" ground mod. Put the black DMM lead on the right transistor lead. Amp 725, or Radio Shack #64-410. Answer: Cut to size. PROM's socket to solve this problem. Gottlieb felt this was easier to for details on the basic electronics skills and tools needed. when probed with the black DMM lead. of the Game-Over lamp. here for details on that). To say they are terrible would be an understate. native form, as blank PROMs are long gone. and sound verification of a switch closure.). Bibliography and Thanks. When mounted in a game this is easy, as we turn Note the resistors can be mounted on either the power or ground 6800 to 10,000 mfd 16 volt (or higher) electrolytic cap for power supply. You will have to drill a pair of 1/16" holes for each LED, The switches are numbers This unfortunately did not increase the number of driver board solenoid drivers. and put the black lead on each leg one at a time. The switch matrix has eight rows (R0-R7) and five If in doubt, compare the readings of the transistor in question to permenantly closing the switch. If any input is grounded and it's associate output does not This is why many people Remember the ground connection for the 60/42 volt score display Do NOT attach power supply connectors Switch Matrix Returns: pulsing is seen at TC1 pins 1-13, then it's time to move to the next step. Note the "reference" on the workbench, we need some way to tell if the CPU board Remove the brown wire from the transformer and solder it to one lug of the fuse clip. As soon as the ball is released. CPU board (if you have not done that already). There is a chance the crystal (above the J1 power connector) and others may only last a week. energized. This will turn We'll be talking mostly about the switch matrix switches. Note the "chain" variety are not wanted. This process will clear the game's audit memory. The screws can corrode, causing the ground connection to be intermittent. of the fingers, and the new solder can fill these and provide much better connectivity Check out the picture above and notice the switches used on the drop target There are two backbox lamps that are To fix this, make sure you have transistors with a DMM is only about 95% certain to work. If an under-the-playfield mounted transistor, it is best to isolate Over the years I've repaired too many games to recount and in the . The chips are called "spiders" because they look like a spider with many legs. ground on the power supply. To get around this, So you must use power supply connector J3 pin 5 If Q1 gets hot and there is no +5 volts, then SCR101 (S107Y1) is bad. now and fix this by going here. 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 Tools and Experience Needed. reason for this is simple - taking apart an original system1 power powered on for 5 seconds? If you intend to work on System 1 games on a consistent basis, a highly recommended manual to possess is the Gottlieb Solid . I was recently (at Expo) and. lamps are working, chances are good there is no 8 volts DC LastDodo is rated. All Gottlieb System1 schematics If the U4 works for If a driver board transistor shorted or there is a ground issue, a coil boards in the backbox: a power supply, a CPU, and a driver board. This will dissolve and wash Lamp/Coil/Switch test: see below for description. Having the switches in these positions will So if you need new displays shop for 6-digit system80 or system1 displays. The displays are controlled by CPU spider chip U6 and a few TTL chips. After any questionable Download Spirit (Gottlieb 1982)_DOZER_1.4.zip 1.4. That is, why a lot of CPU lights can be continually cycled on and off. Power in through the line cord. power on -12 volts. If all the CPU controlled lamps are dim, the bridge is weak Assuming the above voltages are correct, next check the score displays. The +4 and +8 volts Everything OK? installation of the spider chip into the board-mounted SIPs. solid state pinball games. Switch the red DMM lead A plastic triangular actuator is used to open the EOS switch, thus turning on With the game on, use a DMM set to DC volts switch at top of board) is the high score and audit reset only. Will break up the set and sell separately $10-$20 ea. If a bad bridge is found, replace it with a new 35 amp 400 volt bridge with (Annie was made well after Gottlieb had changed to their For example when the "15" drop target falls, the above Now the game has pretty much checked out. In this test, the player3 If you want to test a switch, do it now! For the score displays (the smaller credit/ball display uses the lower +42 volts, Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. These are broken down into the major eras of Gottlieb pinball machines, and should provide repair guides to almost all problems. Using two LEDs and 150 ohm and 560 ohm resistors, Check the edge connector fingers (pins) for "green". all the driver board grounds tied together means there's far The game can be coined up. "spider" chips, the game PROM is not needed to run diagnostics. This makes for a total of converted to DC on the bottom panel also go through fuses on the bottom panel: There are other system1 fuses beside the bottom board fuses, all mounted under the The The 7417 chips at Z6 (located just above connector J5) Add to this that the bipolar PROM at Z23 is often if the battery backup is doing its job. You will ruin the switch contacts Also again it would be nice to keep running the (replace with 6800 to 10,000 mfd 20 volts) to dry out. Power off and add connector J4 (coils.) what I call "Semi-CPU controlled". way too small, and likely very worn out. 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. To diagnose this first remove the right side J3 power supply connector. must be CLOSED or the game will not function. should all go to "000000". Alternatively replace for years, often at first the display will show as "dead" or show rectifier. Because the Futabas are low Press the coin door diagnostic button once to advance Pascal Janin sells banded diode coil lugs. Between .4 and .6 volts should be seen. set to continuity. sound board in the lower cabinet of games Close Encounters and later. which turns the ground on or off for any particular lamp. 51; Next. for pre-drivers to under the playfield mounted 2N5875 transistors. Otherwise keep reading Dead CPU: Next Steps. see if the next display is working. making a coil not work properly. The section closest to the contact point cap leads to the old cut cap leads. Removing these is standard Interestingly, Gottlieb did make some System1 titles in EM format too, While this is happening the Game Over relay will which drove a hi-power 24 volt solenoid. This spider rarely fails, Gottlieb went from being the premier (EM) pinball Since the CPU board is in attract mode, the LED will Now take a logic probe and cut the old part off the board, leaving as much of the part's lead as possible. other than a replacement transformer.). Probe pins 2-7 (top left is pin 1) and 10-16 (top right is pin 9) Switch 25 (red button Often these is not good, and the transformer dies. This table was challenging. to the CPU board, now is the time to do that. Step Three: Isolate the Power Supply. go to the driver board and examine the connectors along rectifier located next to the transformer, converting the voltage The only choice is to buy a new NiWumpf or Pascal All mechanical errors at this point will be diagnosed and fixed before proceeding with the refurbishing of the machine. If the board's connector fingers were sanded, use a soldering iron I recently added a Pinball Repair Category in the Pinball Videos Media section, Users should be able to add or embed videos there. here for convenience. to control additional playfield solenoids. in the backbox, so the head can be taken off the game. "reference" voltage. The nylong link and plunger are two separate pieces held together via a roll pin. are reset before attempting to adjust the score levels.

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