Lenovo 4223, 4228, 4229 manual Safety information, General safety, Electrical safety

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Chapter 2. Safety information

This chapter contains the safety information that you need to be familiar with before servicing a computer.

General safety

Follow these rules to ensure general safety:

Observe good housekeeping in the area of the machines during and after maintenance.

When lifting any heavy object:

1.Ensure you can stand safely without slipping.

2.Distribute the weight of the object equally between your feet.

3.Use a slow lifting force. Never move suddenly or twist when you attempt to lift.

4.Lift by standing or by pushing up with your leg muscles; this action removes the strain from the muscles in your back. Do not attempt to lift any objects that weigh more than 16 kg (35 lb) or objects that you think are too heavy for you.

Do not perform any action that causes hazards to the customer, or that makes the equipment unsafe.

Before you start the machine, ensure that other service representatives and the customer's personnel are not in a hazardous position.

Place removed covers and other parts in a safe place, away from all personnel, while you are servicing the machine.

Keep your tool case away from walk areas so that other people will not trip over it.

Do not wear loose clothing that can be trapped in the moving parts of a machine. Ensure that your sleeves are fastened or rolled up above your elbows. If your hair is long, fasten it.

Insert the ends of your necktie or scarf inside clothing or fasten it with a nonconductive clip, approximately 8 centimeters (3 inches) from the end.

Do not wear jewelry, chains, metal-frame eyeglasses, or metal fasteners for your clothing. Remember: Metal objects are good electrical conductors.

Wear safety glasses when you are: hammering, drilling, soldering, cutting wire, attaching springs, using solvents, or working in any other conditions that might be hazardous to your eyes.

After service, reinstall all safety shields, guards, labels, and ground wires. Replace any safety device that is worn or defective.

Reinstall all covers correctly before returning the machine to the customer.

Electrical safety

CAUTION:

Electrical current from power, telephone, and communication cables can be hazardous. To avoid personal injury or equipment damage, disconnect the attached power cords, telecommunication systems, networks, and modems before you open the server/workstation covers, unless instructed otherwise in the installation and configuration procedures.

Observe the following rules when working on electrical equipment.

© Copyright Lenovo 2012

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Image 9 Contents
ThinkStation Hardware Maintenance Manual Page ThinkStation Hardware Maintenance Manual First Edition April Copyright Lenovo Contents Appendix A. Notices 109 About this manual Important Safety InformationThinkStation Hardware Maintenance Manual Safety information General safetyElectrical safety ThinkStation Hardware Maintenance Manual Safety inspection guide Voltage-selection switchSafety notices multi-lingual translations Handling electrostatic discharge-sensitive devicesGrounding requirements To Connect To Disconnect ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Safety information ≥18 kg 37 lbs ≥32 kg 70.5 lbs ≥55 kg 121.2 lbs Para Conectar Para Desconectar PerigoPrecaución Safety information ThinkStation Hardware Maintenance Manual Safety information ThinkStation Hardware Maintenance Manual Connexion Déconnexion Vorsicht Achtung Arbeitsschutzrichtlinien beim Anheben der Maschine beachten Safety information Pericolo Per collegarsi Per scollegarsi AttenzionePrestare attenzione nel sollevare lapparecchiatura Safety information Peligro No debe Adopte procedimientos seguros al levantar el equipo Specifications General informationLenovo ThinkVantage Tools Product Recovery Lenovo Solution CenterThinkVantage Rescue and Recovery Lenovo WelcomeAdditional information resources ThinkStation Hardware Maintenance Manual General Checkout Problem determination tipsThinkStation Hardware Maintenance Manual Diagnostics ThinkStation Hardware Maintenance Manual Starting the Setup Utility program Using the Setup Utility programViewing and changing settings Using passwordsPower-On Password Password considerationsAdministrator Password Hard Disk PasswordErasing lost or forgotten passwords clearing Cmos Enabling or disabling a deviceSelecting a startup device Enabling ErP compliance mode and Deep Sx Selecting a temporary startup deviceSelecting or changing the startup device sequence Exiting the Setup Utility program ThinkStation Hardware Maintenance Manual Configuring RAID Configuring RAID with Intel RSTeInstalling Sata or SAS hard disk drives Entering the Intel RSTe configuration utility RAID Level Installing Sata or SAS hard disk drives Entering the LSI MegaRAID Bios configuration utility Setting the hot spare hard disk drive Hard disk drive boot error Symptom-to-FRU IndexPower Supply Problems Beep symptomsBeep Symptom FRU/Action Post error codesLong and 3 short beeps Keyboard error Long and 9 short beeps Bios ROM errorMiscellaneous error messages Post Error Message Description/ActionMessage/Symptom FRU/Action Check power supply and signal cable connections Undetermined problems First device networkSecond device hard disk ThinkStation Hardware Maintenance Manual Locations Front connector, control, and indicator locationsLocating major FRUs and CRUs Locating connectors on the rear of your computerLocating major FRUs and CRUs Number FRU description Self-service CRU Optional-service CRU System board part locations ThinkStation Hardware Maintenance Manual Drive bay locations Locating internal drivesThinkStation Hardware Maintenance Manual Installing external options Installing or replacing hardwareReplacing FRUs Handling static-sensitive devicesRemoving the computer cover Removing the computer cover Removing and reinstalling the front bezelWhat to do next Installing or replacing a PCI cardOpening the PCI card retainer Removing a PCI card Installing or replacing a memory module Removing the memory fan duct Removing a memory module Installing a memory module Installing or replacing the optical driveRemoving the optical drive Installing the optical drive retainer Replacing the card reader Connecting the optical driveRemoving the card reader Installing the card reader Replacing the batteryRemoving the old battery Replacing the heat sink and fan assemblyRemoving the heat sink and fan assembly Replacing the hard disk drive fan assembly Removing the hard disk drive fan assembly Replacing the rear fan assemblyRemoving the rear fan assembly Installing the rear fan assembly Installing or replacing a hard disk driveRemoving the hard disk drive Installing the hard disk drive into the bracket Installing the hard disk drive Removing the hard disk drive enablement module Installing or replacing a hard disk drive enablement moduleInstalling a new hard disk drive enablement module Replacing the front audio and USB assemblyReplacing the internal speaker Removing the internal speaker Installing or replacing the microprocessorInstalling the second microprocessor Opening the handles Removing the microprocessor Installing the microprocessor Replacing a microprocessor Opening the handles Opening the microprocessor retainer Do not touch the pins Replacing the system board ThinkStation Hardware Maintenance Manual Closing the microprocessor retainer Installing the microprocessor socket cover Replacing the power supply assemblyRemoving six screws that secure the power supply assembly Completing the parts replacement Additional service information Recovering from a POST/BIOS update failure Updating flashing the Bios from your operating systemAutomatic configuration and power interface Acpi Bios Power managementAutomatic Power-On features System memory speedDimm operating voltage Microprocessor model Memory frequency Appendix A. Notices Television output notice European conformance CE markTrademarks 111 IndexReplacing Battery
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