Gottlieb System 1 Pinball Repair from 1977 to 1980 All text and pictures copyright by cfhprovide. Clay Harrell unless otherwise noted. Document date 080116. Shop from the worlds largest selection and best deals for Lighting Parts Accessories. Shop with confidence on eBayBrowse our lamp and light fixture replacement and repair parts for sockets, switches, plugs, cords and more. NTAwWDUwMA==/z/N4wAAOxy7nNTVkCv/$_3.JPG?set_id=2' alt='Inline Lamp Switch' title='Inline Lamp Switch' />Buy Colour. Match Round Ceramic Table Lamp Purple Fizz at Argos. It fills the space that I wanted it to. Quite small and I noticed that there was a large indent in the pottery, but had thrown the packaging away, so moved the offending piece near to the wall. Inline-Diy-Lamp-Foot-Push-Switch-Power-Light-FootSwitch-Lighting-accessories-Desk-lamp-floor-lamp-1.jpg' alt='Inline Lamp Switch' title='Inline Lamp Switch' />PINBALL Gottlieb System 1 Pinball Repair. Fixing the CPU board. Much of this information thanks to Leon. Ive taken his info. Initial CPU Checking. There are a couple of things that should be noted right off. Gottlieb System 1 CPU board. First, is there any battery corrosion on the CPU board If so, stop. The. corrosion needs to be removed, neutralized, and any broken. This will. especially be an issue around the Z6,Z7 chips to the right of the battery. Z8,Z2. 8 chips to the left of the battery. All bets. are off until a corroded CPU board is fixed. After any questionable. DMM set to continuity and. Even one broken trace can definitely. Best Ide To Program Php. CPU board not work. Second, is there 4. DC at the CPU board Best place to check. C1. 6 capacitor top most cap next to the. J1 power connector. Is there 1. 2 volts DC at the CPU board Best place to check for this is at the C1. C1. 6 cap next to the J1 power connector. The machine will absolutely not boot without 5 and 1. Assuming the above voltages are correct, next check the score displays. Do they come on right at power on and strobe If so, there is. Slam switch. The CPU board should. Slam switch is not an issue see. Last, do the score displays come on after the game is. They should, as this is the normal. If they dont, then the CPU board is. If the CPU board turns on the score displays. Also set the CPU board DIP switch as follows. DIP 1 8off one coin, one credit. DIP 9on three balls per game. DIP 1. 0on match feature on. DIP 1. 1on replay instead of extra ball. DIP 1. 2on tilt kills current ball only. DIP 1. 3on show number of credits. DIP 1. 4on play a tune when game started. DIP 1. 7,1. 8on maximum credits 1. DIP 2. 0on chimestones when scoring. DIP 2. 1on show high score to date. DIP 2. 2on award 3 credits when high score beat. DIP 2. 3on play a tune when money inserted. Having the switches in these positions will. Adding 5v and 1. Power LEDs to the CPU board. Though this modification certainly doesnt fix a dead CPU board. I personally find it nice to have LEDs showing that 5 volts and 1. CPU board. Using two LEDs and 1. LEDs to the CPU board next to the main power. You will have to drill a pair of 11. LED. but theres plenty of room to do this by the power connector. The 5 volt. LED needs the 1. Note the resistors can be mounted on either the power or ground. LED. It is important to connect the flat side of the LED correctly. LED wont work. See the two pictures below. Booting the CPU board on the Workbench. At this point, its a lot easier to diagnose and fix the. CPU on the workbench instead of in the game. The best. way to do this is using a computer power supply. The only. voltages needed to boot the CPU board are 5 and 1. DC. So any computer power supply that outputs these voltages. Connect the computer power supply to. J1 left side CPU power connector. A1. J1 pin 1 bottom most pin not used. A1. J1 pin 2 1. DC. A1. J1 pin 3 ground. A1. J1 pin 4 ground. A1. J1 pin 5 5 volts DC. A1. J1 pin 6 top most pin 5 volts DC. Another perhaps easier way to connect the voltage from the. CPU board is using the C1. C1. 7 below C1. 6 capacitors next to the J1 power connector. C1. 6 top cap, top lead 5 volts DC. C1. 6 bottom lead ground. C1. 7 bottom cap, bottom lead 1. DC. Installing an Alive LED. Now the next problem to overcome are the score displays, or. Since we cant use score displays. CPU board. is booting. When mounted in a game this is easy, as we turn. Yet on the workbench we cant do this. Instead we use an LED and a resistor connected to chip Z1. CPU board. Just a water clear style LED thats important that. Connect. the other side of the resistor to ground Z1. Now connect the non flat side. LED to Z1. 6 pin 1. When the CPU board is powered on, after a 5 second delay, the LED should. If we can get our. CPU board to light this LED after a 5 second delay, this is our indication that. CPU board is running. Since the CPU board is in attract mode, the LED will. Likewise the LED will be brighter when just the last game played 0. So if you have gotten this far, and the board is booting, you can skip down to the. Testing the Buffer and Spider Chips. Otherwise keep reading. Note on some games I have added the alive LED. I have the CPU working and installed in an actually pinball machine. This one segment would be on player. Sims 2 Deluxe Serial Code Crack. This only happens on some machines, and. Im not entirely sure why. Ive used the alive LED on a great. CPU boards, yet once installed in some games, I have this. The solution is to just remove. LED once you have the CPU board. Dead CPU Next Steps. The CPU board is completely dead, with no score display. Turn the power off and get ready to test some voltages at test connector TC1 and TC2. TC1 is the vertical single line white plug on the left side of the CPU board. TC2 is the vertical white plug in the dead center of the CPU board. On both TC1 and TC2 pin. The reset circuit holds the CPU chip low for a set period of time until. If the CPU chip is never told to go high from. Measure TC1 pin 1. Z2 pins 7,9 and power the CPU on. It should show immediately at. This will rapidly change into 5 volts after about. This is the RESET signal. Another place to check the Reset is at chip Z2 pins 7,9. Both should go high to 5 volts after about one second of power on. If the reset is not working and does not change to 5 volts. Q5 and Q6 MPS A7. If the reset is still not going from 1. Z2 4. 52. 8 CMOS. Still not working, check or replace caps C3. C3. 2. 1 mfd, and these. Note that the Reset button on the CPU board has. Reset signal it is only used to reset bookkeeping. Gottlieb revised the RESET circuitry during System. The new version gives a longer Reset and ensures the CMOS RAM. Older boards can be upgraded. R1. 59 Change 2. 7meg to 3. R1. 61 Change 2. 7k to 4. R1. 62 Change 6. 8k to 2k ohms. R1. 63 Change 2. 7k to 6. The next thing we check are the clock signals. The clock circuit. CPU chip needs to execute. This is provided. CPU board crystal and the U1 spider chip. Check TC2 pins 1. Also check both legs of the crystal, and the same. If an oscope is not available, use a DMM set to DC volts. This should show 2. TC2 pin. 11 and 2. TC2 pin. 12. The top leg of the crystal should show. If there are no clock pulses, there is a problem with the Rockwell. U1 spider chip, and the story ends here as the spider chips are. The only choice is to buy a new Ni. Wumpf or Pascal CPU. There is a chance the crystal above the J1 power connector. Crystal Y1 is a 3. MHz crystal. AddressData Line Activity. Now that we have a reset and clock circuit. This is done at TC1 pins 1 1. Use an oscope or logic probe looking for pulsing lines. If theres no pulsing, the Rockwell spider chips are bad. Ni. Wumpf or Pascal CPU board. If. pulsing is seen at TC1 pins 1 1. Score display LED OnAt this point the CPU board should be booting on the bench. This can be seen by viewing the LED we added to simulate the. With the Slam switch defeated. LED should light. If this is the case, we can now. Spider chips and Buffer chips. If this. LED is not coming on, and all the above tests check out good. Ni. Wumpf or Pascal CPU board. Testing the InputOutput Buffer and Spider Chips. In order to check the buffer chips, we will activate. The buffers chips are Z2. Z2. 7 7. 4H2. 1, both right below. DIP switch. Also Z9 7. Z8 7. 40. 4, both at the bottom left. CPU board. Use an alligator clip. A logic probe is best.