IBM 3 User Manual page 310

DANGER
1. Power off (O) the printer.
2. Check that the cable is connected to the printer and to the computer.
3. Power on (|) the printer.
4. If the status code occurs again, call for service.
This status code is automatically reset by the computer and should only appear
briefly on the display. If the printer continues to display the message, follow these
steps:
Recover:
DANGER
DANGER
1. Power off (O) the printer.
2. Check that the cable is connected to the printer and to the computer.
3. Power on (|) the printer.
4. If the status code occurs again, call for service.
Recovery:
300
4247 Model 003 User's Guide
<1-13> Do not connect or disconnect a communication port, a teleport, or any
other connector during an electrical storm.
017 COMMUNICATIONS CHECK
<1-14> Switch off printer power and unplug the printer power cord before
connecting or disconnecting a communication port, a teleport, or any other
attachment connector.
<1-13> Do not connect or disconnect a communication port, a teleport, or any
other connector during an electrical storm.
020 FORMS JAMMED REAR TRACTOR
CLEAR JAM AND RELOAD FORMS
1. Press Stop to silence the alarm (press Stop twice on a coax-attached printer.)
The message remains in the display.