Lenovo ThinkPad 760CD ThinkPad 380, 385, 560, 560E, all 760, 765 and SelectADo - Page 699

Port Replicator Checkout Use the following procedure to isolate a port replicator problem. A port replicator attaches to the system expansion connector at the rear of the computer. 1. Power-off the computer. 2. Remove the failing devices from the replicator. 3. Unplug the AC adapter from the replicator, if attached. 4. Remove the port replicator from the computer. 5. Reconnect the failing device directly to the computer. (If another device occupies the connector, remove it first.) 6. Go to General Checkout and follow that procedure. 7. If the advanced diagnostic device test does not find an error, suspect a problem with the port replicator or the system expansion bus. 8. Power-off the computer and reconnect the port replicator. 9. Power-on the computer and run the following advanced diagnostic tests: Serial port test with the wrap plug installed on the replicator. Parallel port test with the wrap plug installed on the replicator. PCMCIA-2 test with the PC test card installed. FDD-2 (FDD-1 if no drive is installed in the computer) drive test on the failing device. 10. If diagnostic errors appear, replace the replicator or diskette drive attachment unit. If the problem remains after the replacement, replace the system board. 11. If power problems appear only when using the replicator, replace the replicator. If power shut downs occur intermittently when using PCMCIA-2 devices via a port replicator, suspect an over-current problem. Some PCMCIA devices use more power; if the maximum usage of each device occurs simultaneously, the total current will exceed the limit, thereby causing a power shut down. Isolate this problem by removing one of the devices, and use the computer under the same condition, and see whether a power shut down occurs. Do this procedure for all devices then determine the cause. Customer purchase of the larger AC adapter (50W, optional) is recommended, if it is not yet in use. Common Devices Checkout 687