IBM 3180 1 User Manual page 89

IIBIE
Error
Code
LK
Recovery Procedure
Without setting the Power switch to Off, turn the metal
retaining ring on the keyboard cable counterclockwise
until the cable is loose; then disconnect the cable from
the display element.
Retaining
Ring
Does the LK error code remain on the display?
Yes No
Replace the logic element.
(Go to Chapter 5.)
install the original keyboard
element. {See Chapter 5 for
installation procedure.)
Replace the keyboard element.
(Go to Chapter 5.)
C9468(m
Chapter 4. Fixing Display Station Problems 81