Three-Digit Display: Models 320, 32E, 32H - IBM 7012 300 Series Installation And Service Manual

Three-Digit Display: Models 320, 32E, 32H

Removal
1. Set the power switches of the attached devices to Off.
2. Set the power switch of the system unit to Off and unplug the external power cable.
3. Do the removal procedure in "Rear Cover" on page 3-3.
4. Do the removal procedure in "Top Cover" on page 3-4.
5. Do the removal procedure in "Front Cover" on page 3-6.
6. Open the plastic cable lock on the connector by pulling each end up (with a small
screwdriver or your fingers).
7. Pull the flex circuit out of the connector.
8. To remove the three-digit display from the card guide, push the back of the display while
twisting and pulling the display from the front.
Replacement
1. While aligning the flex-circuit cable in its plastic guide shield, twist and push the
three-digit display into the card guide frame.
2. Open the plastic cable lock on the connector by pulling it up.
3. With the contact side of the ribbon cable facing toward the center of the planar, push the
flex circuit into the connector.
4. Close the plastic cable lock on the connector by pushing it down into the closed position.
5. Do the replacement procedure in "Front Cover" on page 3-6.
6. Do the replacement procedure in "Top Cover" on page 3-4.
7. Do the replacement procedure in "Rear Cover" on page 3-3.
Flex Circuit
Cable Lock
3-54
Installation and Service Guide