Epson 4SLC2-50 - Manual (Page 104)

AC Adapter Problems
If the computer does not work properly with the AC adapter,
check the power light. If it is on, the AC adapter is working and
supplying power to the computer. If it is not on, follow these steps
to find the problem:
1. Remove any diskette from the diskette drive and turn off the
computer. Disconnect the AC adapter and then reconnect it.
Then turn the computer back on. If the power light is still off,
go to step 2.
2. Check the connections: make sure the AC adapter cable is
securely connected to the computer and that the power cable is
properly connected to both the AC adapter and an electrical
outlet.
3. Check the green LED on the AC adapter and make sure it is on.
If it’s not, go to step 4.
4. If the connections are good, then check the electrical outlet to
make sure it is supplying power. (For example, plug a portable
lamp into the socket and turn it on.) If the outlet is working
and the connections are secure, there may be something wrong
with your adapter.
Caution
Use only the AC adapter (model number AP-3S25) supplied
with the computer.
Troubleshooting A-5