Removing the Model 6E3 Service Access CoverTo remove the service access cover, do the following:1. Loosen the two captive thumbscrews located on the rear of the cover. See the following illustration forthumbscrew locations.2. Using the access cover handle, slide the cover toward the rear of the system. After the front of theservice access cover has cleared the front chassis ledge, lift the cover off the system unit.Attention: For proper cooling and airflow, replace the cover before turning on the system. Operatingthe system for extended periods of time (over 30 minutes) with the cover removed might damagesystem components.135 62451 System Unit 4 Thumbscrews2 Service Access Cover Pin Slots 5 Service Access Cover Pins3 Service Access Cover 6 Service Access Cover HandleReplacing the Model 6E3 Service Access CoverTo replace the service access cover, do the following:1. Align the service access cover pins with the slots in the the system. The flanges on the top and bottomof the cover wrap around the system chassis.2. Hold the service access cover against the system drawer and slide it toward the front of the system.3. Tighten the two captive thumbscrews located on the rear of the cover.Chapter 9. Removal and Replacement Procedures 289