Apple quadra 605.lc series Servicehandbuch

 

 Troubleshooting

Symptom Charts/Built-in Video

 

 (Continued)

 

 - 6

 

Vertical lines, 

horizontal lines, or 

snow appears on 

screen, or screen is 

completely dark; 

startup tone is 

normal

1 Verify monitor works with another Macintosh.

2 Replace video cable.

3 Replace monitor.

4 Replace VRAM SIMM. 

5 Replace logic board. Retain customer’s SIMMs.

6 Replace power supply.