TroubleshootingSymptom Charts/Video - 8
Video
Screen is black, audio | 1 | Adjust brightness. See Adjustments chapter in appropriate |
and at least one drive | 2 | monitor manual. |
operate, fan is | Check cables. | |
running, and LED is | 3 | Verify that monitor is switched on. |
lit | 4 | Clear parameter RAM. Hold down <Command> <Option> <P> |
|
| <R> during startup but before “Welcome To Macintosh” |
| 5 | appears. |
| Replace video cable. | |
| 6 | Replace monitor. Refer to appropriate monitor manual to |
| 7 | troubleshoot defective monitor. |
| Replace video card, if present | |
| 8 | Replace SIMMs. |
| 9 | Replace logic board. Retain customer’s SIMMs. |
| 10 | Replace power supply. |
