Lenovo ThinkPad 760CD ThinkPad 380, 385, 560, 560E, all 760, 765 and SelectADo - Page 225

4. If the controller test runs without errors, the drive read/write tests start automatically. 5. If the drive test detects an error, FRU code 50 for FDD-1; or 51 for FDD-2 appears. If the diskette itself is known to be good, replace the drive. 6. If FDD-2 test detects an error, move the drive to the computer's diskette drive connector directly, if possible, and test it again as FDD-1. If no errors occur in the FDD-1 position, the drive is not defective. Go to "Port Replicator Checkout" in "Common Devices Checkout" section to isolate the replicator problem. 7. If the drive is attached through an Expansion Unit, go to the service manual of the Expansion Unit to isolate the problem. 8. If the drive is attached through a Diskette Drive Attachment Unit, replace the unit. If an error occurs when the external diskette drive is attached through the external diskette drive connector and there is not a diskette drive in the UltraBay, reseat the connector on the video card. If the error still remains, reseat the external diskette drive connector. If the error still remains, replace the following FRUs one at a time: 1. External diskette drive kit 2. Video card 3. External diskette drive connector LCD Information Panel Checkout If an LCD information panel problem occurs, do the following: 1. Power-off the computer. 2. Power-on the computer. 3. All the icons in the LCD information panel appear for a moment soon after the computer is powered-on. Verify that all icons appear correctly. If some of the icons do not appear, replace the keyboard. If the problem still remains, replace the video card. Power Systems Checkout To verify the symptom of the problem, power-on the computer using each of the power sources as follows: 1. Remove the battery pack, diskette drive, and hard disk drive. 2. Connect the AC Adapter and check that power is supplied. 3. Install the diskette drive or hard disk drive one at a time, and check that power is supplied from each power source. ThinkPad 760 (9546, 9547) 213