tec9
Active member
Hey all-
I've been trying to figure out a issue with my 4 player machine, and have found another member here whose machine acts the same way...I feel like I am getting close to figuring out what is going on, but would like others who have the machine to answer a few questions for me. If you have a 2 player machine, you won't be able to answer these, except for question #6.
The problem I have is with the player controlled cars drifting a bit when you are going forward or reverse and not touching the wheel. I've swapped every part I can think of in this machine and the problem remains. The problem may be a multiplexing issue with the fact the players 1/3 and 2/4 share the same input lines. They are paired together because the PCB lacks enough inputs to support separate inputs for the 4 wheels. I am wondering if anybody elses machine does this. Here is what I need:
1-Power up your machine- and do not touch or bump the wheels. Enter test mode and selct player inputs. The four steering wheels will have a value...what is the value upon power up?
2-If you change the value of the wheels in test mode so that they are different, and then rapidly press the start button of a car, do the steering values flicker?
3-Before leaving test mode, put all the wheel values back to "0". Do not bump or touch the wheels, and exit test mode.
4.Play a 4 player game, and only use the shifters to make all player cars go forward and reverse. They should operate straight...
5-Reset the machine- and spin each wheel on each station. Then start a 4 player game. Again only using the shifters, do the cars drift at all?? (This is where mine do)
6-On the steering PCB's there is a spot for a jumper...is the jumper in place on any of them? Does anybody know what the jumper is for?
What I have found on my machine is that any movement on the paired wheels (1&3 +2&4) will affect the other. For example if the values of 1 and 3 are different, BOTH cars drift a bit when going forward and reverse. If the values are the same...they won't drift.
Thanks for any input!!
-Mark
I've been trying to figure out a issue with my 4 player machine, and have found another member here whose machine acts the same way...I feel like I am getting close to figuring out what is going on, but would like others who have the machine to answer a few questions for me. If you have a 2 player machine, you won't be able to answer these, except for question #6.
The problem I have is with the player controlled cars drifting a bit when you are going forward or reverse and not touching the wheel. I've swapped every part I can think of in this machine and the problem remains. The problem may be a multiplexing issue with the fact the players 1/3 and 2/4 share the same input lines. They are paired together because the PCB lacks enough inputs to support separate inputs for the 4 wheels. I am wondering if anybody elses machine does this. Here is what I need:
1-Power up your machine- and do not touch or bump the wheels. Enter test mode and selct player inputs. The four steering wheels will have a value...what is the value upon power up?
2-If you change the value of the wheels in test mode so that they are different, and then rapidly press the start button of a car, do the steering values flicker?
3-Before leaving test mode, put all the wheel values back to "0". Do not bump or touch the wheels, and exit test mode.
4.Play a 4 player game, and only use the shifters to make all player cars go forward and reverse. They should operate straight...
5-Reset the machine- and spin each wheel on each station. Then start a 4 player game. Again only using the shifters, do the cars drift at all?? (This is where mine do)
6-On the steering PCB's there is a spot for a jumper...is the jumper in place on any of them? Does anybody know what the jumper is for?
What I have found on my machine is that any movement on the paired wheels (1&3 +2&4) will affect the other. For example if the values of 1 and 3 are different, BOTH cars drift a bit when going forward and reverse. If the values are the same...they won't drift.
Thanks for any input!!
-Mark