Maintenance and Troubleshooting 79
Problems and solutions
Most problems you may encounter while operating your printer
have simple solutions.
You can check the operation of your printer using the self test.
(See page 94.) If the self test works properly the problem is
probably caused by the computer, the application software, or
the interface cable. If the self test does not work, see “Where To
Get Help” on page 96.
Note:
If you are an experienced user or a programmer, you can print a
hexadecimal dump to isolate communication problems between the
printer and computer. To print a hex dump, turn off the printer. Next,
hold down the Load/Eject and LF/FF buttons while you turn on the
printer. Then send data from your computer. The printer prints all the
codes it receives in hexadecimal format.
Power Supply
Power is not being supplied
The lights on the control panel do not come on.
Cause What to do
The power cord may be
unplugged.
Check that the power cord is properly
plugged into the electrical outlet.
The outlet may not be
operating.
If the electrical outlet is controlled by an
outside switch or automatic timer, use a
different outlet. Plug another electrical
device, such as a lamp, into the outlet to
determine whether the outlet is
operating properly.
