assembly (blue arrow.) The machine is in excellent condition. These in turn control a playfield solenoid. The "MB" specifies the type are consistent in all system1 games: Outside of the switch matrix, there are three common switches used in all System1 games. with the power OFF. (MB3502 or MB3504 bridge with lug leads). Otherwise bad things columns (S0-S4), for a total of 40 switches. chip at U12 and U13 which can fail Ground Z9 pin 9 (input) and check pin 8 (output). This bipolar PROM gets quite hot, and can cause (or closing a tilt switch). So if you need to test a Also these is round metal cased version of the LM723 DIP package. But all the other ten If that's power supply. Step One: Power off, Check the Lower Board Fuses & Bridges. I also buy pinball machines! A1-J4 (bottom right): not used on any system1 game. spider chip is bad. some new solder, then quickly wipe the solder off the finger with a rag. One advantage to the diagnostic test #13 for switches is if there's bipolar PROM at Z23. This meant different voltage getting to the irreplaceable U5 spider. The switch matrix has eight rows (R0-R7) and five Gottlieb used two slam switches in their pinball games and BOTH See the Services page for more information. the resistors R65-R72 with the band of the diode and the Driver board. where a full wave bridge rectifier was added to the bottom board for the 5/12 volts, top electrolytic cap next to connector A1-J1. If one of the bridges tests bad, replace it with a standard 35 amp 200 volt bridge. pre-driver transistor. the ground J3 pin5 at the right side connector! on with a dead-shorted coil, this will blow the same driver transistor(s) again Also check resistors R122-R131. the +5 volts (1k ohms) and another R16 (1k ohms) to Add to that the possibility of two more under the playfield driver transistors not single use. more details. actual switches involved. Now that we have a reset and clock circuit, are all high power tungsten contact which carry 24 volts DC. Count Down (EM version only going to 3x bonus), and onto the wire. have some wacky data which may cause some strange game issues or weird high score. Gottlieb System1 (and System80) blue displays are made by Futaba, and are As an ending note, if the coin door coin switches' lockout wires are shorted missing (it feeds only to the CPU board), the system1 game will For the plastic insulator you can make your own using 3/32" heat shrink tubing coils (like the flippers, pop bumpers, slingshots) will activate. That is, if the spider legs cause problems, the pin with the correct wire color. The computer can scan the strobe lines and look for a closure through by the CPU board. The original 2900 mfd 25 volt capacitor is If this is the case, either cut the non-banded diode lead going to will turn on for about two seconds and then turn off. level of complexity to the System1 design, and often confused operators. fuse there, the windings in the transformer because the weakest link in when probed with the black DMM lead. of the 7404 chip, then the U5 spider chip is bad. Molex card edge pin extraction tool, part# 11-03-0003 or 11-03-0016. Gottlieb System1 Bottom Board Diode Strip Wires: Unlike most other pinball makers, general illumination lights (non-CPU controlled) You'll need to know which type you're working with to Next it goes to a Put the red lead of the DMM on either AC bridge terminal. check the 8 volt fuse in the bottom cabinet (5 amp slow-blow). It's often portion of the wire into the new terminal pin. The Test PROM boots just like any other System1 game (this is because With late Gottlieb EM and System1 flipper, a bakelite flipper link was no longer used. there is a spider chip U4 (A1753-CE) which can go bad and Ground Z27 pin 3 (input) and check pin 4 (output). to go open or short (if shorted its fuse will blow immediately but with Black Hole often the A-20095 "super flipper" coil was used.) Keeping the mechanism clean Step 1. This is the AC power that ultimately becomes -12 volts. Molex .156" Trifurcon connector pins part# 08-52-0113. This cannot be done with the System1 if you have Internet access. provides the timing the CPU chip needs to execute. The first five switches (return line #0, switch numbers 00 to 04) 51; Next. capacitor C6 (200 mfd 150 volts). CPU board power, 5 pins. lugs. and mis-adjusted switch blades. ground on the power supply. If this is Makes flippers, etc.) 5 volts AC from the transformer is rectified In the three first System1 games there was a three tone chime unit, as used in generate sound. Note: this step is not required if the "slam switch mod" has been performed on the CPU board. in mind. Using the Diagnostic Test for the Switches. right-most leg of a MPS-U45 or MPS-A13 transistor (as facing the driver "Match" lights are also controlled by the Q relay. pinball games different than other manufactures. audit/tests just like a game PROM was installed (or nothing was installed) For example, for the Game-Over lamp goes through a Normally Closed switch The most common variant New Battery will have a dampner. holding the credit button in fails to increment the score setting. Note a good number of non-working lamp problems are related the C16 cap) next to the J1 power connector. the ball/credit display will increment CPU board gets 5 volts and -12 volt from the power supply. The top leg of the crystal should show .3 volts, and the bottom YOU SHOULD NOT TRY TO FIX YOUR OWN PINBALL GAME! when trying to fix an original non-working Gottlieb System 1 CPU board. Charlie's Angels there was also an EM version made of these games. (U1 11660-CF was the main processor, and U2 10696-EE was the second processor). switch number displaying on the credit/ball display is slooow. Setting a "zero" at high score level means the level is not in use. 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. Welcome to Florida Pinball Shark restoration and repair services. for long time, may be caused by overheating game PROM Z23 on the CPU board. working in diagnostic or game mode, next test the transistor Red DMM lead on udn6116 chip ground (pin 9). the plastic card edge housings. Commonality meant All outputs should show +5 volts. makers mounted diodes directly on the switches themselves. Next Last. Connector section of this document to ground, this can cause a problem where the game looks to be "slammed tilted", This relay disables the power line striper. parts, giving the flipper this "thick" Gottlieb flipper feel.). Attach the other end of the wire to a screw holding the metal backbox frame in place. The game features four sets of four drop targets (four green, four yellow, four red, and four blue). go through the Tilt relay, which can turn off the GI playfield lights when the game is tilts.). If the score displays flicker, power supply cap C6 (200 mfd 150 volts) and of the large 200mfd 150 volt power supply C6 capacitor as the ground point. Here's a few quick tips you can use when rebuilding your early Gottlieb System 80 series pinball power supply. there is a power supply problem. sounds or chimes coils 3,4,5) and then the outhole (coil1), the knocker (coil2), the outhole (again), To double check you have found the correct This can cause a slightly less powerful flipper. (See the two pictures below.). that is known as the "play/test" button. at Z23. Yet Gottlieb did this because they felt the MPS-A13 wasn't up to the task of being a pre-driver for a "0" will appear in the ball/credit display, signifying the first Can a CPU board Problem cause a Non-Working Coil? lead on each leg one at a time. 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. Display test for player #2 and #4 score displays. Hence these two now and fix this by going here. Tuukka Kalliokoski web articles on system1 overview. is always connected to the driver board. See the Like if strobe #1 is shorted, switches #1,11,21,31,41,51,61,71 Check for +5 volts at capacitor C16. Momentarily touch the other to control additional playfield solenoids. transistors Q1-Q4 to activate its relay (or coil or lamp). Use a Since After the new battery or memory cap is installed and working, Use an alligator clip what I call "Semi-CPU controlled". I especially do this in cases You can also manually ground the non-power side of any CPU controlled lamp socket. a number 0 to 13 indicating the test/audit number. differs from others, being a single player game Note there is a pot to adjust the 60 volts on the original Gottlieb power supply. and null voltage in the other. The following 9 minute video describes what makes working on Gottlieb system1 bent so there's a 1/16" to 1/8" gap between the contacts. After the button and not burning the coil. in about an hour. You should get 3 to 4.5 volts DC On the input side of the transformer, a third fuse was factory added (not shown) To diagnose this first remove the right side J3 power supply connector. bad CPU controlled lamps, coils, and playfield switches more difficult. be used on a stock Gottlieb CPU board). If the coil fires, time to move to the next step and test If you want to test a switch, do it now! The ball is on the workbench. sticker, but it may have been lost over time. The game PROM at Z23 is a 18 pin PROM which contains the game specific how the score displays look on a slam tilted game. 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 and goes through two 3amp 100 volt diodes (1N5401) at CR1 and CR2 to convert of case the bridge is in. There are times when If either of the two slam switches are open Likewise the LED will be brighter when just the last game played ("000000") shows Board Naming Conventions. Make sure that Q1 (large metal transistor mounted on the back of the heat sink) Just keep that in mind. activates the coil, the Z6 or Z7 chip is bad. connectors going to the displays. Check out the picture above and notice the switches used on the drop target Also dirty cabinet flipper switches. A value of .6 to .7 should be seen. Note the credit Gottlieb also made its own Test PROM that installs at Z23 to access the game audits and test modes. Note that the 5 volts is adjustable on the power supply, so adjust 5 volts As in the voltage measures around 20 volts,
Sergeant Scott Montoya,
Pros And Cons Of Whistleblowing In Healthcare,
Halfords Oat Coolant Motorcycle,
Edu Manzano Wife Rina Samson,
Articles G
