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SNC 5100
76 Service Port MAP
6-00020-02
Check the RS-232 Cable
This test requires another laptop or desktop computer with a functioning
RS-232 9-pin port. Terminal emulation software must be installed and running.
Step 1. Remove the RS-232 null-modem cable from the service port.
Step 2. Connect it to the compatible port on the other computer.
Step 3. Connect the service terminal to the cable.
Step 4. Set the service terminal and the other computer to 19200 baud, 8
data bits, no parity, one stop, Xon/Xoff flow control.
Step 5. Enter test lines in the service terminal and the other computer.
Step 6. Confirm that they are displayed on each other.
If this fails, replace the RS-232 cable.
If this succeeds, remove the cable from the other computer
Go to "Check Connection with Boot Messages".
Check Connection with Boot Messages
Step 1. Reconnect the terminal to the SNC 5100 with the RS-232 null
modem cable.
Step 2. Stop all I/O to the SNC 5100.
Step 3. Shut down the SNC 5100 and keep the power off for 5 seconds.
Step 4. Turn the SNC 5100 on.
If boot messages fail to appear on the service terminal, then replace
the SNC 5100.
Go to “Before Removing or Replacing the Unit” on page 82.
Proceed through “Replacing the SNC 5100” on page 84.
Step 5. Reboot the SCSI host.
If devices are still unavailable, proceed to "SCSI Channel MAP".