Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 585

Undetermined Problems Use the following procedure when the diagnostic tests do not identify the failing adapter or device. Check that all cables, wires, and connectors are connected so that they do not cause a short circuit. If any problems are found, reconnect or replace them. Check the power supply for correct operation (see "Power Supply" on page 552). If the power supply is operating correctly, return here and continue with the following procedures. 1. Power-off the computer. 2. Remove or disconnect one at a time the following adapters or devices from IBM ThinkPad Dock I. (Do not isolate adapters or devices that are known to be good.) a. Non-IBM devices. b. A modem, printer, mouse, external keyboard, external display, external diskette drive, numeric keypad, or other external devices. c. Any adapter. Note: Removing an adapter or device may cause configuration errors. Ignore error code 174. d. SCSI device. e. Hard disk drive. 3. Power-on the system and check if the problem has changed. 4. If the symptom remains, repeat Steps 1 through 3 until you find the failing adapter or device, or until all adapters or devices have been removed. 5. If all adapters or devices have been removed and the problem remains, replace the following IBM ThinkPad Dock I FRUs one at a time. Note: If a replaced part did not resolve the problem, put the original part back in the IBM ThinkPad Dock I. Do not replace non-defective parts. a. Riser card b. Main card c. IBM ThinkPad Dock I audio card If the problem goes away when you remove an adapter, but replacing the adapter does not correct the problem, replace the main card of IBM ThinkPad Dock I. ThinkPad SelectaDock Docking System 573