IBM 6400-I15 Maintenance Manual - Page 75
The printer detects a twinax protocol communications error and reports the error.
![]() |
View all IBM 6400-I15 manuals
Add to My Manuals
Save this manual to your list of manuals |
Page 75 highlights
015 COMMUNICATION CHECK CHECK CABLE 1. The line is not active on a twinax interface. Power off the printer. Disconnect the AC power cord from the printer. Check the twinax host data cable connection and twinax I/O cable connection at the CT board. Reseat the twinax host data cable connection and the twinax I/O cable connection at the CT board. 2. Disconnect the twinax auto-termination cable from the printer. Test the cable for the resistances shown on page 321. If resistances are not correct, replace the twinax auto-termination cable. 3. Connect the AC power cable to the printer. Power on the printer. Send a print job to the printer. Verify that all other devices on the twinax line are working properly. (Refer to line problem determination procedures, as recommended by the host system.) If the message is gone, the host has reestablished communication with the printer. If all other twinax devices work properly and the message still appears, replace the coax/twinax expansion board. Record the message and return it with defective board. 016 INVALID COMMAND 1. The printer detects a twinax protocol communications error and reports the error. Power off the printer. Disconnect the AC power cord from the printer. Check the twinax host data cable and twinax I/O cable connection at the CT board. Reseat the twinax host data cable connection and the twinax I/O cable connection at the CT board. 2. Disconnect the twinax auto-termination cable from the printer. Test the cable for the resistances shown on page 321. If resistances are not correct, replace the twinax auto-termination cable. 3. Connect the power cord to the printer. Power on the printer. Send a print job to the printer. If the message appears, replace the twinax cable. 4. Send a print job to the printer. If the message appears, go to Communications Failures, page 133. Troubleshooting 75
![](/manual_guide/products/ibm-6400i15-maintenance-manual-bffea60/75.png)