Additional Troubleshooting Hints
Symptom 1: Picture Noise - Many vertical lines are seen all over the screen.
Cause: The voltage of the address period of the Scan Drive Signal at pin 8 of
connector SC20/D20 has dropped. The problem is the D board.
Figure 59
Symptom 2: Picture Noise - Part of the previous picture is visible on the screen.
Cause: The VSET (Initialization) pulse of the Scan Drive signal at pin 9 of
connector SC20/D20 has dropped. The problem is the D board.
Figure 59a
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