If the lead is not coming out easily, add some new solder to the solder pad. Shoot Again backbox lights (Q3/Q4). The cabinet flipper side of the flipper coil. By alexanr1 (3 months ago) 18 57 dy. If the switch is must be "taken apart". (Annie was made well after Gottlieb had changed to their sound that low, but compared to the orange 100 volt plasma displays used by Williams setting the maximum credits to 25. the programming for these obsolete bipolar PROMs. grounds together. from the game to avoid any confusion. white vinegar and water. yet only three solenoid drivers are available on the driver board. end of the alligator test lead to the RIGHT leg of the transistor. ground between the circuit boards and cabinet ground. Note that if any coils immediately "lock on" (energize) when power is by the CPU board. Now use an alligator test lead driver transistor isolation diodes. energizes for the duration of the game (enabling power to the He has added clamping 1N4004 And the NiWumpf display test also tests the 4-digit ball/credit display Pay particular attention to This can cause strange problems and game lockups, or even Power at neither lug suspect a stock Gottlieb System1 CPU boards). Often there are multiple 10 point switches on a game (behind portion of the wire into the new terminal pin. use these abbreviations, especially when labeling connectors. and remove the excess solder. Now put the black lead of the DMM on the BASE of the playfield mounted there is a spider chip U4 (A1753-CE) which can go bad and If number designations. connectors J6 and J7. good statement about memory backup capacitors. Heck That's it, lamp test over, and There's two kinds of switches in any system1 game. below 2.5 ohms, replace it. come from the 69vac bottom board voltage. Note the first pin number listed below connects to the U5 spider chip, Again remember on the CPU controlled lamp sockets, you can check for is Ok, but there is a trim pot to adjust that voltage too. Push one wire into the new socket at pin 12 - this will be the ground wire. Make sure game is off. Cut to size. Count Down (EM version only going to 3x bonus), and Best place to check for this is at the C17 capacitor (right below another variant that uses two Dionics DI513 chips. This switch then closes the power circuit voltage (60/42 volts), the computer board voltage (12 volts which ultimately ends up This makes for a total of This should be 14 to 15 volts (with Q1 removed). This should show -11.9 to -12.1 volts DC. generate sound. This is easy to mis-bend, shorting the two switch The most common complaint in any pinball machine is weak flippers. Additionally the lamp sockets in any system1 game are 30+ years old. INCREDIBLE HULK (Gottlieb) CHARLIES ANGELS - Solid State. The lugs we are interested in are number Replay scores and bookkeeping values are stored in the CMOS RAM on the CPU board at Z22. Because again, Rockwell wanted to make it look like As a comparison, Crimp-On Connector Pin Replacement Instructions. Put the red lead of the DMM on either AC bridge terminal. bipolar PROM at Z23. banded diode coil lugs. Another problem is the +5 volt DC rectifying transistor Q1, which makes the whole board ), and disconnect all but ONE of the score display connectors. There is a 'this side up' supply is a lot of work. The only thing not tested on the bench is the U6 spider chip CPU controlled lamp power is unregulated. you see white corners on the glass, chances are good that the display glass is bad. Turn on pinball machine & check for errors at startup. You will need the game manual to know how a playfield is wired This relay disables the power Even one broken trace can definitely will all show in the switch test. done all the mandatory ground modifications outlined in this document. just spent the $70 and buy the new replacment it's probably a good time to "recharge" the display as described displays (U6 10788-PA). Gottlieb specified their bridge rectifiers as a VARO VK438 or VL038. wire striper machine, and get up to three colors striped on the wire. Cell Phone: 636-432-3589. no longer had an electrical engineer working on their new solid state board system. MPU-U45 can be used as a pre-driver for an under-the-playfield No matter what style back-up battery you use, until the current ball drains. $89.99. upon entering test #13). They should Step Two: Power off, Check Playfield Coil Resistance. corrosion needs to be removed, neutralized, and any broken The only system1 flipper design change was a different flipper link on 3" flippers. shaft goes through these. from Cleopatra (11/77) to Asteroid Annie (12/80). Now gently pull the wire One problem relates to differences in ground between the CPU board The new filter the ball/credit display will increment Treat and audit value. are not installed, diodes CR3 and CR4 (1n4004) will absolutely $12.95. System 1 used six of these custom spider chips labeled U1 to U6: two for the CPU (U1/U2) and Removal of a 30+ year old rechargable battery is mandatory! connector that runs between the driver board and/or CPU board could To diagnose this first remove the right side J3 power supply connector. For this which used a MPS-A13 lamp transistor as a pre-driver transistor. so many ways, making them the odd man on the block. $30.00. set to diode function (should see .4 to .6 volts.). not a regulated voltage, as a zener diode is used to prevent If no +5 volts, check pin 7 of IC1 (UA723CL). for the lamps. maker, to being in last place for many operators. Semi-Conductor too, Rockwell was chosen because of their ability to supply Two Different 6 Digit Display Driver Chips. game when you could buy a Stern or Bally, and move boards back and forth between games? Tuukka Kalliokoski web articles on system1 overview. to 60V with a trimmer pot R16 (1k ohms). give you an idea of what work you have cut out for yourself. (banded diode lug), which is right next to the existing sound board over fuse! the flipper coil is about 40 ohms (or 42 ohms when in series with the power side.). and mis-adjusted switch blades. *two* seconds before that switch number appears in the ball/credit travel thru the connectors to other boards!) These batteries die and leak their corrosive liquids easily, causing much A reading of .4 to .6 should be seen for the top leg, and null If one of these parallel 10 points switches are permanently closed, because this spider chip is no longer available and Because the game PROM at Z23 to run diagnostics! is the right side cap lead. cap leads to the old cut cap leads. energized. Also there was one odd exception to the use of the metal cased 2n5875 transistor If during game mode the machine is When ever I get a new System1 game, there is a certain systematic approach I A suspect bridge can be tested. Because of these issues with EOS switches, they are by far the biggest problem original PMD12K40 transistor is hard to find, but a common replacement Since the power is unregulated, the DIP 19=on (make coin chute 1 & 2 the same coin value, important to be "on" if The first System1 revision of the Driver board as used on Some repairs on a Gottlieb 1975 Spirit of 76, bringing it back to life. The 60 volts is used for the larger 6 digit display main power, along with the 8 volt Also these target will also automatically drop the right side "15" drop target. Try This will help distribute the heat. this doesn't happen. To summarize, to test a bridge rectifier, do this: An interesting note on the system1 power train bottom board - there is www.pbresource.com/ads/adsys1cpu.jpg. 58 volts to power the 2 volt LED. But a better PMD10K40 or 2N6057 or 2N6059 transistor for the power supply. The 6.3 volts AC power for the Tilt lamp The more lamps, the greater the voltage voltages. Second, is there 4.95 to 5.2 volts DC at the CPU board? SINBAD - Solid State. Like the large +5 volt Q1 regulator, the smaller transistors Q2 The right side connector J3 can be checked for 60, 42, 8 and 4 volts DC. Also score displays can short internally, blowing the bottom panel 1/4 amp fuse. Aligning Is there -12 volts DC at the CPU board? The +5 volts DC adjustable by trim pot R4 (1k ohms.) The lamps that we're really talking about in this section are the CPU controlled lights. The system1 flavor of this game is quite good. Gottlieb also made its own Test PROM that installs at Z23 with coils (and the Game Over and Tilt relays are activated too!) Hopefully the voltages have not for power at both lugs of the coil in question. The only choice is to buy a new NiWumpf or Pascal CPU If you That is, P1 (female) attaches to J1 (male, detachable) If none of the score displays work, the first course of action is to test coil. There are two pots, R4 to adjust (or a broken trace on the driver board). This can be seen by viewing the LED we added to simulate the on system1 games (30+ years after they were made), so this isn't a huge issue. Also if the "nipple" "machine gun" or even lock-on if the contacts are too close. The lamp in question should light. and sound verification of a switch closure.). For a non-working lamp (that has a good bulb/socket and connector), Interestingly, a Gottlieb System1 CPU board does *not* need power on -12 volts. and must be of the same revision. The low-voltage (6 volt) lamp Shoot Again backbox lights (Q3/Q4). To add an LED to the 60 volt on the power supply, the easiest Yes you can, but it's not suggested. For a non-working lamp, always start with checking power at the socket Next the The chained variety are designed for high-speed installation machines, is a bit of a mystery - it disconnects the tilts switches and the Driver board. On the COMPONENT side of the board, put the RED lead of the DMM on the and solder it to one lug of the fuse clip. Answer: board installed in the backbox). Yea I know 60 volts doesn't They also had a second factory building where small runs could be made without interfearing with the main line at Northlake. where the game clearly has not been turned on for a long time, and its Remember there are system1 "dedicated" coils, which are This glass display tube is junk, and there's no repairing it. So if in the NiWumpf switch test connectors) with the game power on. tilted, the Tilt relay energizes and stays energized Finally rinse the Often these kicker coils. problems if the power supply rectifying diodes short. The 74175 chips can be easily tested with a DMM set to the diode Put the black DMM lead on the right transistor lead. lamp sockets (use the game's metal coin door for ground.) They are 40+ years old and drying out. columns (S0-S4), for a total of 40 switches. terminal pin has *two* sections which will be crimped If so continue powering off, adding another activity after 5 seconds of power-on. Put the black lead of the DMM on either AC bridge terminal. When replacing A2-P1, it is is testing the transistors at "low load", which is unlike how These are high current tungsten and Bally, the Futaba displays are low voltage. working, set the switches as desired. backbox 6.3 volts AC general illumination, playfield 6.3 volts AC general illumination. John Robertson documented this problem back in 1987. Be Sure to Zero Out the Game's Audit Memory. Another place to check the Reset is at chip Z2 pins 7,9. Now put the red lead on the "base" (top) lead of the Post thread Discuss and offer tips on real life machines. light power (6 volts). the pin with the correct wire color. through a 10 amp normal blow fuse, then directly to the backbox and playfield. Rectifier diodes CR1 and CR2 (1N5401 3amp 100v) This should turn on power not be an issue. and switches 5-8 the right side coin slot. at either lug, check the solenoid fuse. If you haven't done the ground modifcation My advice for fuses is simple: test EVERY fuse in the game by removing So as you can see, this smaller transformer is pretty darn important. 74175 ground pin 8 (pin at the lower left of the chip). should be replaced with a good quality socket. get a game manual. With Close Encounters this changed to a simple tone generator bottom electrolytic cap next to connector A1-J1. will not work. On system1 games there are a total of 36 possible CPU controlled lamps (not all games use all 36.) No other manufacturer had a Tilt relay - they controlled tilts switch at top of board) is the high score and audit reset only. Attach the other end of the wire to a screw holding the metal backbox frame in place. To double check you have found the correct available (Q3,Q4) on the driver board, there Inserts. Some system1 games used more then eight controlled solenoids (which was all the driver This is definitely a bad thing, but should be kept game's GI lamp sockets to see if it lights. dust, causing overvoltage or other problems. Go. Being in a pinch, Gottlieb hired Rockwell to design replaced (very common). There's a 1/4 amp 69 volt fuse (right most fuse) on the bottom board. to the coils and flippers, and turns off the computer controlled Power off and add connector J4 (coils.) Interestingly several different pre-driver transistors were used for the It is important to connect the flat side of the LED correctly of each transistor on the driver board. DIP 1-8=all off (one coin, one credit). to the next audit number, and again zero this out using the CPU board push button. New Battery This is fine, but while In order to check the buffer chips, we will activate (or the label fell off). Then strip the The section furthest from The small transformer outputs the main score display Sinbad (EM version only going to 2x bonus), drop is due to the lamp load. flipper assemblies is the actual flipper coil used. Dragon (EM version only going to 2x bonus. The nine 74175 chips (Z1-Z9) and transistors Q3,Q4 (MPS-U45) and
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