Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 288

5. Reconnect the failing device directly to the computer. (If another device already connected to the computer, remove it first.) 6. Go to the "How to Run the Diagnostics" on page 292 and run the diagnostics. 7. If the advanced diagnostic device test does not find an error, suspect a problem with the port replicator of 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. FDD-2 device test on the failing device with scratch diskette. 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. Power Management Features Three power management modes are provided by the computer to reduce power consumption and prolong battery power. Standby Mode: When in standby mode the following occurs: The LCD backlight turns off. The hard disk motor stops. Events that cause the computer to enter standby mode: Standby requested by the Fn key. (Fn+F3) No activity under auto-standby enabled by the ThinkPad Features program. Events that cause the computer to exit or resume standby mode: (Resume) Any key operation. Suspend Mode: When in suspend mode, the following, in addition to the four actions of standby mode, occur: The LCD is powered-off. The hard disk is powered-off. The CPU is stopped. 276 IBM Mobile Systems - ThinkPad HMM Volume 3