IBM ThinkPad 340 Series Hardware Maintenance Manual

Also see for 360: Specifications Hardware Maintenance Manual Operating guide User guide Manual

space key. A √ mark appears next to theselected icon. Insert the blank diskette wheninstructed.2. Run the diskette drive test.3. If the controller test detects an error, FRU code 10appears. Replace the system board.4. If the controller test runs without errors, the driveread/write tests start automatically.5. If the drive test detects an error, FRU code 50appears. If the diskette itself is known to be good,replace the drive.If no errors occur at the FDD position, the drive is notdefective.Power Systems CheckoutTo verify the symptom of the problem, power-on thecomputer using each of the power sources available asfollows.1. Remove the battery pack.2. Connect the AC Adapter and check that power issupplied.3. Disconnect the AC Adapter and install the chargedbattery pack; then check that power is supplied bybattery pack.If you suspect a power problem, see the appropriate powersupply check listed below. “Checking the AC Adapter.” “Checking the Battery Pack” on page 30. “Checking the Backup Battery” on page 31. “Checking the Standby Battery” on page 32.Checking the AC Adapter: You are herebecause the computer fails only when the AC Adapter isused. If the power-on indicator does not turn on, checkthe power cord of the AC Adapter for correct continuity andinstallation.1. Unplug the AC Adapter cable from the computer andmeasure the output voltage at the plug of the ACAdapter cable. See the following figure.ThinkPad 340x (IBM 2610) 29