Инструкции По Обслуживанию для Apple performa 400 series
![Apple](https://files.manualsbrain.com/attachments/2c022a7d1a76dcd8f02c04aa8d97faf41b63902f/common/fit/150/50/8a691e9df6162751590e2cef93a951cf3a39c94b6949421016232655b22d/brand_logo.png)
Troubleshooting
Symptom Charts/Built-in Video - 4
Partial or whole
screen is bright and
audio is present, but
no video information
is visible
1 Replace video cable.
2 Replace monitor.
3 Replace logic board. Retain customer’s SIMMs.
Screen is completely
dark, fan is not
running, and LED is
not lit
1 Check batteries. See “Battery Verification” in Additional
Procedures.
2 Plug monitor directly into wall socket. Verify that monitor
has power.
3 Remove expansion card, if present.
4 Remove peripherals.
5 Replace power supply.
6 Replace logic board. Retain customer’s SIMMs.