When you see the "CH/CL" then ram has been cleared. Wait a few seconds and observe the LED display. Move the JUMPER on MPU board from J15 to J14 (see pictures attached for details) and power up the game. If this process did not work, you will need to continue to the next step. Turn off the game, plug I/O board back in and power up the game. Unplug the I/O board (top circuit board, do not unplug ribbon cables on front of I/O board), power up the game and wait for the LED display to show a "CH/CL". Depending on the MAINS installed on your MPU board, there are 3 ways to clear RAM.įIRST METHOD: Turn off power. When i first got my machine this was the help i first recieved ( i was geting error 83)Īn 83 tilt code is a memory error that requires the ram to be cleared.
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