Apple 550C Instrukcja Użytkownika Pobierz pdf (Strona 36)

Troubleshooting Symptom Charts/Video

(Continued)

- 11

Video

(Continued)

Backlight doesn’t

operate

1 Verify that backlight cable connection is secure.

2 Check cable, inverter board, interconnect board,

daughterboard, and motherboard connections.

3 Verify that cables are not pinched or severed.

4 Replace inverter board.

5 Replace interconnect-to-inverter cable.

6 Replace interconnect board.

7 Replace interconnect-to-display cable.

8 Replace display.

9 Replace daughterboard.

10 Replace motherboard.

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