Apple ImageWriter II - Manual (Page 21)

improperly set DIP switches in the printer
a hardware failure, an improperly set jumper block, or DIP switches in the interface card (if the serial
interface cable connects to one)
a hardware failure in the computer.
Important!
Proper environment and maintenance can prevent many problems.
The following sections describe problems you might encounter and provide diagnostic instructions and
possible solutions.
You Turn the Printer On and Nothing Happens
Check these potential problem sources:
Is the power cord plugged in? Check the power cord connection to the printer and to its power outlet.
If you’re using a power strip, is it plugged in? Is it turned on?
Is power available to the power outlet? You may want to try plugging something else into it, like a radio or
lamp. If the appliance doesn’t work, the problem probably lies somewhere in your electrical system. Is the
outlet controlled by a wall switch? Is the problem a blown fuse or tripped circuit breaker?
If you determine that the printer is properly plugged in and turned on and that power is available to its
outlet (the test appliance works), the problem may be a blown fuse in the printer. Take the printer to your
authorized Apple dealer for fuse replacement. (The fuse is internal and should be replaced only by an
authorized Apple dealer.)
The Printer Is On, But Nothing Happens
Several things can cause this problem.
Is the ImageWriter II Select light on? You must select the printer, or it cannot receive data from the
computer.
Is the ribbon properly installed? Is it jammed?
Are you using the correct serial interface cable?
Is your serial interface card jumper block set to TERMINAL?
Are the data transmission rates between the printer and the software or between the printer and interface
card correctly matched? (See the section “Mismatched Data Transmission Rates,” later in this chapter.)
Is the printer correctly connected to the AppleTalk network?
Is the interface cable plugged into the correct socket? The cable will fit into a modem socket.
Never adjust or change a cable or an interface card when the computer is on.
If you are using a Macintosh Plus, Macintosh, or Macintosh XL computer, check the Chooser or Choose
Printer accessories (whichever appears on your menu). Make sure you’ve selected the correct printer
and port. If you have the Chooser, also check the Control Panel to see whether AppleTalk is connected
or disconnected.
Important!
If you have a Macintosh Plus, you should have the Chooser and not Choose Printer. If you do not have
the Chooser, you need to install software on your startup disk. See the section “Using the Installer” in
Macintosh Plus, The Owner’s Guide.