IBM 380Z manual Checking Operational Charging

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circuit. Try to trickle charge the battery by attaching it to the computer with the AC adapter.

4.If the voltage is+11more.0 Vthandc, measure the resistance between the battery terminals 3 and 4.

The resistance must be 4 to 30 K ohms.

If the resistance is not correct, replace the battery.

If the resistance is correct, replace the DC/DC card.

Checking Operational Charging

	Note

Battery		charging will not start unless the	Fuel-Gauge
is below 95%. At below 95%, the battery will start
charging to 100% of its capacity. This limitation
protects the battery from overcharging and also
prolongs		its life.

To check the operational charging, install a fully discharged battery or a battery that is less than 50% charged.

Turn on the computer while it is connected to the AC Adapter. If the battery status indicator does not turn on, turn off the computer, remove the battery, and let the battery return to room temperature. Reinstall the battery, and turn on the computer (still connected to the AC Adapter). If the charge indicator still does not turn on, replace the battery.

Backup Battery Checkout (Nonrechargeable)

1.Turn off the computer and unplug the AC Adapter from the computer.

2.Open the Mmoery-slot cover.

3.Remove the backup battery. (Refer to “1010 DIMM Card and Backup Battery” on page 45 to remove the battery.)

4.Measure the voltage of the backup battery connector.

ThinkPad 380Z 15

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Contents August ThinkPad 380Z 2635 Computer Hardware Maintenance ManualFirst Where such provisions are1998 Not Apply UnitedThinkPad 380Z LCD Only Read This FirstWrite NotProblems How Use ErrorScrew Tightening Information PortTo Do Following is not covered under the warrantyWhen Only the Power-on Password is Set Disabling the Power-On PasswordOn . a When Both Power-on Password and Supervisor Password are Set2635-Jxx Product OverviewVerified Checkout GuideGo To Diskette Drive Checkout Symptoms Go ToAudio Checkout Keyboard or Auxiliary Input Device Checkout Fan CheckoutClick onSystem Board Ctrl +A Value Memory Checkout Devices System programs CheckoutSystems Pin Voltage V dcFor Communication between the system Battery Battery CheckoutTerminal Voltage V dc / Signal +0 to+13.5 Ground − Lines not used in these steps are usedChecking Operational Charging Wire Status Indicator CheckoutSystem Board and CPU Card Checkout TrackPoint CheckoutDrifting Pointer Self-Test Optional Device CheckoutPort Replicator Checkout CRTset ortoboth Standby Mode Power Management FeaturesSuspend Mode EvenOn timer Hibernation ModeSwitch??? + F12 keysPort Replicator Power Overload Codes Symptom-to-FRU IndexBattery 161 Backup111 Memory 127Easy-Setup Sequence 185 Reset the start-up190 Battery Checkout Configuration602 601604 11XXAction Not InstallCard I9990301Beep Symptoms Infrared-Related Symptoms Function-Related SymptomsIndicator-Related Symptoms LCD-Related Symptoms Keyboard- or TrackPoint-Related SymptomsMore MakePower-Related Symptoms Peripheral-Device-Related SymptomsTimes Other SymptomsSystem board DC/DC card LCD assembly CPU card ThinkPad 380Z Test Running the DiagnosticsTest Checking the Installed Devices ListSlots Test BusDevice ID Diagnostic Error CodesFor example Icon DeviceAudio Code FRU CodesStatus Indicators Related Service ProceduresRunning a Low-Level Format Password CombinationsSymbol Color OnExit Fn Key CombinationsPressCtrl + But Important NoticeReplacing the System Board FRU Service ProceduresNumber Updating the Universally Unique IDentifier UuidRef. No Removal Reference1010 Battery Pack 1030 DriveApply Any Shock Not Pack1020Size With SpacerActual Keyboard Unit Battery Pack1020Then go to 6step When replacing When installingKeyboard and Speakers ThinkPad 380Z When installing Battery Pack1020 Hard Disk Drive1030 Keyboard Unit1040 Diskette Drive Assembly or CD-ROM Drive AssemblyDiskette Drive Diskette Drive and CD-ROM DriveStep Size Quantity Torque Right view LatchTorque shown Step Size CD-ROM DriveStep Size Quantity LCD UnitStep Latches Fan Assembly, CPU Card, Thermal Rubber Neverthe reusetable When installing Upper Shield Case Box Speaker and Microphone Following figure shows the route for 1120 DC/DC Card Microphone Cable Card1090 SlotUnit1080 Hex Stud Screw Battery Pack Latch LCD Front Cover Step Size Quantity Torque LCD Inverter Card LCD Panel Position Flexible cable connector may vary by Type LCD Misc. Parts Step Bush LCD CableRemoved. Use a new one. Make sure the screws are ThinkPad Port Replicator with Advanced EtherJet FeatureYou Upper Cover Assembly Box Assembly When re-installing Locations Front View Bottom View Rear View Parts List Name Base Misc Parts Kit includes Ref. No. FRU Name Hard Disk Drive and CD-ROM/Diskette Drive AssemblyLCD Assembly Right Hinge Included Hinge Kit LCD Cable Assembly Keyboard Nomenclature Miscellaneous Parts Miscellaneous and Option Parts ListHDD PartsNumeric Keypad FRU Name FRU No Accessories FRU NameBlack Keypad FRU Name Black Keyboard FRU NameTools FRU Name Used in These Countries Power Cord Part Number Power CordsFor 2-pin power cords Power Used These For 3-pin slim power cordsMMX TrademarksThinkPad 380Z Part Number 10L9624