User's Manual Part 3

Chapter 6 — Troubleshooting
102 6822 Series 80-Column Printer User’s Manual
If the protocol options match, then the communications cable may be
defective. To determine if the cable is working, substitute a new cable. If
the PC is suspect, substitute a different PC. A defective computer dock
might be another possibility.
Understanding Printer Errors
Printer Errors are divided into classes:
• Runtime errors
• POST errors,
• Fatal errors (consisting of flash write errors and EEPROM block
errors).
Runtime Errors
Runtime errors can occur during the course of printing. These errors are
displayed on the LEDs, along with beep sequences. This causes the
printer to stop printing and enter an error state. Then beep sequences are
emitted, LED codes are displayed, the error status may be sent to the
host (depending on the protocol), and the printer goes into suspend
mode.
The printer exits from the suspend mode when the user presses one of
the keyboard keys or communications is resumed from the host. The
printer also places the printhead in its home position and attempts to
recover from the error condition. Until the error condition is corrected,
the error procedure does not end, and the error state is not removed.
For paper out errors, load paper and press the Set Page button before
printing begins. Press the Form Feed button to load the paper to the top
of form. The following table provides a listing of printer failure
indicators and describes what they mean.
Printer Failure Indicators
Sets of Beeps Paper Out Head Jam Low Batt Meaning
1 beep Off Off On 12 V under voltage fault (Low Battery)
1 set of 2 beeps Off Off 2 blinks 12 V over voltage fault (Input Voltage
too high)
1 set of 3 beeps Off Off 3 blinks 24 V under voltage fault (internal
power supply failure)