Apple macintosh ii.iix.iifx Instruction De Maintenance
![Apple](https://files.manualsbrain.com/attachments/2c022a7d1a76dcd8f02c04aa8d97faf41b63902f/common/fit/150/50/8a691e9df6162751590e2cef93a951cf3a39c94b6949421016232655b22d/brand_logo.png)
Troubleshooting
Symptom Charts/System - 3
System
Does not power on—
screen is black, fan is
not running, and LED
is not lit
1 Check cables.
2 Plug monitor directly into wall socket, and verify that
monitor has power.
3 Replace power cord.
4 Check batteries. Refer to “Battery Verification” in
Additional Procedures.
5 Replace power supply.
6 Replace logic board. Retain customer’s SIMMs.
Clicking, chirping,
or thumping
1 Remove additional NuBus cards.
2 Replace power supply.
3 Replace logic board. Retain customer’s SIMMs.