Apple Multiple Scan 20 Display Spécifications télécharger pdf (Page 25)

Troubleshooting Symptom Charts/Raster

(Continued)

- 13

Raster

(Continued)

Oversized raster;

menu bar might be

partially cut off;

adjustments have no

effect on raster

Replace main deflection board, and without disconnecting

microprocessor board, check its revision level.

Important:

On the component side of the board, look for a white

mark on the upper left corner and a 9-digit number that ends in

-11, -12, or -13.

If you see “-12” and a white mark or “-13” and no white

mark, you have an updated board. No board replacement required.

If you see “-11” or “-12” and no white mark, replace the

microprocessor board with an updated board after downloading

settings as described in “Display Setting Restoration” in this

chapter.

Caution:

To prevent data loss or corruption, always save

EEPROM settings before you replace the microprocessor board.

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Apple Multiple Scan 20 Display Spécifications Page 25