The following table lists the failure problems for troubleshooting all basic systems. See
the Troubleshooting Tables on the following pages for a troubleshooting protocol.
Nothing happens when the power is switched on (Nothing appears on the LCD).
When the power is switched on, the LCD display operates but the carrier does not
return to its home position.
When the power is switched on, the carrier moves to the right but cannot detect
its home position (i.e., the home position indexing mechanism is faulty).
Keys malfunction (do not insert characters or insert wrong characters)
Printing results abnormal (various unsatisfactory printing results)
The line feed (LF) motor does not rotate normally.
The buzzer does not sound.
Power in on, but nothing appears on the LCD.
LCD displays operates, but data displayed is incorrect (does not match input).
Word Processor prints when no paper is set, or will not print when paper is set
(Paper End Sensor malfunction).
The FDD does not operate correctly.
Communication function (optional fax/modem) does not work or does not work
An error message appears on the display.
Table 3.1 Failure Analysis