Second, disconnect the ribbon cables from the CPU board that lead to the Driver Board, Sound Board, and Displays. Also disconnect the Power Supply connectors CN2, CN3, CN4 as well as CN16 on the Driver and CN6 on the Sound board. If it does not, something is wrong either on the Power Supply or CPU board and will have to be troubleshot and repaired. Some games, like Farfalla, may have additional fuses in holders under the playfield; check these as well. Even though the coaxial and Ethernet cables are the most vulnerable to damage, users are advised to check all the wires and plugs to ensure they are not harmed and are properly connected. Transco switches are clearly the best RF switches I’ve seen so far and IMHO are better than the famous Bird 74 switch. The switch matrix test can also be done on the bench without a playfield by substituting a simple jumper lead with a diode in series.
With our ability to offer both EM and pin diode switch diode switches, weÂ’ll find one that meets your goal. The diagram below shows the location of these switches, marked PWR AMPL. Switching speed as fast as 2 nsec is offered with Mini-Circuits GaAs switches, available in absorptive and reflective models, with and without TTL built-in drivers. The chip below controls the switching power supply. Further, there appears to be an AGC in play as switching from the directional coupler to the splitter – which should have increased the signal presented to the SDR by 17dB – didnÂ’t materially change the results. 6. Annotate symbol editor: After you have done your own annotation you can ask the program to do automatic annotation, to complete all annotations. Once the switch matrix is reconnected, you can use the self test features to verify that the Displays and Sound Board are working. Use the switch matrix chart (Games and Documentation) and/or the playfield switch location chart in the game’s manual to verify that all playfield, coin door, and cabinet switches register correctly. 3. Switch Matrix – Connectors to the CPU board. 8. TTL Control Circuit – Users exercising the option of TTL compatibility can apply the power voltage across a pair of designated power terminals and then control switch operation with a 5 volt control circuit.
That means in case you experience around 10dB signal loss then your gain must be about 10dB or higher. This means that a computer can use small and cheap vacuum tubes or transistors; while its components need to be reliable, they don’t need to be high-quality in all respects. First, with only CN1 connected to the Power Supply, and with all of the other connectors on the Power Supply disconnected, turn on the game, and use a meter to check the voltage test points on the Power Supply. Once you have verified that the fuses are correct, check to see that the transformer in the bottom cabinet has been configured for the correct line voltage for your location. You will see the 5A line fuse, in addition to the settings for the supported input voltages (100V, 115V, 200V, 220V, 245V). The brass spike (and the window on the edge of the cover) point to the desired input voltage setting. You will need at least one working display in the Ball/Credit position (jumper as Display 5) to see what you are doing.
Unused inputs on the IC should be connected either to the voltage or ground (I recommend the ground) for the IC to function properly; unused outputs do not need to be connected. Of course, vacuum tubes and transistors can also function as analogue amplifiers, producing an output which is an amplified replica of the input; they don’t need to be simply either “off” or “on”. On the secondary side, the high-speed Schottky diodes (D5) convert the transformer output to DC. Make sure there is no interference from an intense magnetic field existing in the vicinity of the relay, such as a transformer or speaker. There are two fuses under the playfield in a small holder. Be sure the four mounting screws are carefully but firmly secured so that the aluminum RF shield is tightly pressed against the bottom of the circuit board where the boars contacts the bosses. The IBM System/360 Model 95 computer had a thin-film main memory one megabyte in size, in addition to a supplementary core memory that was four megabytes in size, and was the only IBM computer to use this memory technology. Another emerging virtualization technology is virtual desktops. All those characteristics depend on core material characteristics ans coil design and coil core type.