| Electronics > Repair |
| What more i can do? |
| << < (51/112) > >> |
| 222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 10:07:15 pm --- @222Lab_Test222, could you take out both EPROMS from working board and track the beep signal as usual. Reduce the time/div to detailed view the delay between reset release and beep stop. First with EPROMs and next without. --- End quote --- Here it is BUT after EPROMs removed, beep doesn't stop so, how to watch delay? --With EPROMs --Delay with beep stop --Without EPROMs |
| 222Lab_Test222:
.... |
| 222Lab_Test222:
--- Quote from: Harry_22 on November 19, 2024, 04:15:36 pm ---2. Check the signal on OSC3 quartz near the chipset. --- End quote --- It seems good, BUT if i change more divisions, i couldn't get frequency maybe because it was too dense.. OSC3 is connected to R28 and then to TORNADO Pin 115 |
| Harry_22:
Check the signal Output Enable on working machine with EPROMs at 500us/div. |
| 222Lab_Test222:
Here |
| Navigation |
| Message Index |
| Next page |
| Previous page |