IBM 3270 Maintenance Manual page 280

1.
Replace the fuse. See Section 5.
"Removal/Replacements and Adjustments."
2.
Plug in the Printer power cord.
3.
Set the printer power switch to On.
4.
Leave the printer power On for one minute.
5.
Set the printer power switch Off.
6. Unplug the printer power cord from the
power outlet.
7.
Check for an open fuse.
DID THE FUSE OPEN AGAIN
NO
The problem is resolved. Plug the printer
power cord back into the power outlet.
YES Replace the printer.
October
1984 3-1400-13