LP 7 (260-1167)                Cables                  Faxback Doc. # 5945

COMPUTER               CABLE CATALOG NUMBER           SELECT SWITCH SETTING
Model I-CPU                   26-1411                          PAR
Model I+EI                    26-1401                          PAR
Model II                      26-4401                          PAR
Model III                     26-14O1                          PAR
Color Computer                26-3020                          7BS

A. Plug the printer into an AC power outlet.
B. Connect the appropriate cable to the Printer. (Refer to your computer
   owner's manual.)

Set the input select switch to "PAR" except when using the TRS-80 Color
Computer, for which the select switch must be set to "7BS".

NOTE: When using a parallel interface, moving the switch to the serial mode
will effectively take the Printer "offline".

NOTE: The 7-bit serial interface will not support graphics.

You can connect other types of RS-232C compatible instruments. However,
fairly extensive knowledge is required for proper operation. Unless you
are technically oriented, do not do it by yourself. Contact a competent 
technician. He will need the following information.

NOTE to TRS-80 Color Computer users:
To use the graphic features of this Printer, you will need a special
software driver available from Radio Shack. Order the "Eight-bit Color
Computer Printer Driver". (70-2013). With this driver installed, select
the 8BS setting on the printer. You will then be able to output graphics
as well as text.

When using this Printer with a Class B computer such as the TRS-80 Model
III, you must use a shielded cable to maintain compliance with the rules
for Class B certification. For the Model III use the shielded version of
the 26-1401. This version is called 26-1401A.

POWER ON/OFF

The power-up sequence varies slightly depending on the Computer system used.
With the Model I and Model III systems, all peripherals (printers included)
should be turned on before turning on the CPU. The following is the
recommended procedure for Model II systems:

  when the "INSERT DISKETTE" message appears, turn on the Printer and the
  other peripherals--then insert the system diskette.

The Power lamp will stay lit while the Printer is ON. It is essential that
the Printer stay on while connected to the Computer. Turning the Printer off
can cause erratic operation of the system. Also, remember that if the power
is removed or applied to the Printer while the CPU is running a program,
voltage spikes could cause a program malfunction and/or loss of RAM memory.

(dkh-08/04/93)