Three-Digit Display, Model 397 - IBM 7012 300 Series Installation And Service Manual

Three-Digit Display, Model 397

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. If the system unit has a rear cover, do the rear cover removal procedure on page 3-3.
4. Do the top cover removal procedure on page 3-4.
5. Do the card guide frame removal procedure on page 3-43.
6. Pull up on the connector handle of the three-digit display.
7. Remove the two screws that hold the three-digit display bracket from the chassis.
8. To remove the three-digit display from the chassis bracket, 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 chassis bracket.
2. Replace the three-digit display bracket to the chassis, using the two screws from step 7
above.
3. Push the 3-digit display connector into the planar connector.
4. Do the top cover replacement procedure on page 3-4.
5. If the system unit has a rear cover, do the rear cover replacement procedure on page
6. Set the power switches of the attached devices to On.
7. Set the power switch of the system unit to On and plug in the external power cable.
3-56
Installation and Service Guide
Connector
Handle