TROUBLESHOOTING FLOW CHART
B.
Playback picture
is not good.
Noise appears on the | NO |
| |
screen on the whole. |
|
|
|
YES |
| |
| NO | |
Is | ||
| ||
video IC? |
| |
|
|
| YES |
|
|
|
|
|
| |
Is Enve. waveform | NO | |
supplied to pin 4 |
| |
| ||
of P T501? |
| |
|
|
|
YES
Check video circuit.
Noise appears on the | NO | |
| ||
screen at the bottom |
| |
|
| YES |
|
| |
|
|
|
Is sw pulse supplied | NO | |
| ||
from pin 18 of IC501? |
| |
|
| YES |
|
| |
|
|
|
Check connector, | NO |
and Head dust. |
|
|
|
Check flow A.
Check the PG
Adjustment.
Check D.PG input and connector.
Check pattern
Change Drum Ass'y
27
