Zenith Z-150 User Manual page 160

Page
4.14
General Service
CONDITION
System won't boot from monitor ROM's opening messages.
POSSIBLE CAUSES
1.
Haven't pressed the RETURN key.
2. Wrong disk (you are trying to boot from an unformatted disk or
data disk).
3. Disk inserted wrong.
4. Disk drive latch not dosed.
5. Pressed wrong key.
CONDITION
Nothing happens at poweron, and the green light on the front panel is
notlil
POSSIBLE CAUSES
1. Line cord not plugged in (check both ends). If you are using a
multiple outlet box, check
its
plug.
2. Power not on at AC power source (wall outlet). Check with a different
appliance.
3. Power switch not on (either the CPU or the multiple outlet box).
4. Line select switch incorrect for your area.
5. Cable attaching light and speaker not attached to CPU/memory card.