HP SW TL881 DLT Mini-Lib/1 Compaq StorageWorks TL881/TL891 Family MiniLibrary - Page 187
Replacing, Base Module carefully.
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D-8 Compaq StorageWorks TL881/TL891 Family MiniLibrary System Reference Guide 3. Disconnect the drive power Y cable 2 from the power supply connector. 4. Disconnect the drive 1 RS-422 cable 3 from the controller PWB end. 5. Remove two M4 x 8 mm flat-head screws 4 from along the upper edge of the drive caddy assembly. 6. Remove two M4 extension screws 5 from the top of the drive caddy assembly. CAUTION: Be careful not to break the door levers when you lift the drive caddy assembly out of the Base Module in the next step. To prevent this, steady the caddy so it cannot rock forward as it clears the platform when you're lifting it up, and do not allow the door levers to touch the strut across the top of the Base Module. 7. Grasp the handle on top and lift the drive caddy assembly out of the Base Module carefully. Make sure you tilt the rear end of the caddy as it is being removed so the door levers don't bump against the chassis crossbrace. CAUTION: Do not place the drive caddy assembly with the levers facing down. Place the drive caddy so that the levers are facing up or on their sides. 8. Set the drive caddy assembly on the work surface and install the second tape drive as described in "Installing the Second Tape Drive." Replacing To replace the drive caddy assembly in the Base Module: CAUTION: To prevent breaking the door levers, steady the assembly as you lower it by the handle so it cannot rock forward as it approaches the platform, and do not allow the door levers to touch the strut across the top of the chassis. 1. Grasp the drive caddy assembly by the handle, tilt the front end down at a slight angle, and then lower it into position in the Base Module. Orient it as shown in Figure D-4. 2. Replace the two M4 extension screws 5 at the top of the assembly. 3. Coat the threads of the two M4 x 8 mm flat-head Phillips screws 4 with Loctite 222, and replace them on the upper edge of the drive caddy assembly. 4. Connect the drive 0 and drive 1 RS-422 cables 3 to the controller PWB.