IBM 5251 Series Maintenance Information Manual page 190

Setup Instructions - Section 2
Before you start connecting the display station to the
system, ensure that the following is complete:
• The system operator knows that you are going to connect
the display station to the system.
• The system cable (with a suitable connector) is
installed and ready to use.
• The system cable is connected to the system.
• If the display station is to be connected in series by
means of the Cable Thru feature to a preceding
display station or printer, the Terminator switch on the
preceding work station must be set to position 2 (171).
9. Set the Power switch to the Off position.
10. Connect the system cable as follows:
a. Insert the system cable into the cable tunnel 1
opening on the back of the machine; then push
the cable into the opening until the cable
connector appears at the front.
b. From the front, hold the cable connector and
pull enough cable out of the cable tunnel to
reach across the keyboard cable to socket 1.
c. Connect the system cable to the socket 1
connector.
Note: If your display station has the Cable Thru
feature go to step 11. If not, go to step 12.
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