Lenovo H420 Support Question
Lenovo H420 Support Question
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Question posted by attreesq on February 13th, 2014
How To Replace Power Supply In Pc Lenovo H420
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Related Lenovo H420 Manual Pages
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 4
... 6 External devices 6 Batteries 6 Heat and product ventilation 7 Operating environment 8 Electrical current safety information 9 Lithium battery notice 10 Modem safety information 10 Laser compliance statement 11 Power supply statement 12 Products with television tuner options installed 12 Note to CATV system installer 12 Example of antenna grounding 13 Data safety 14 Cleaning and...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 7
... the operating instructions. However, do not use the product. If you get a suitable replacement.
2 Safety and warranty guide
4BGFUZBOEXBSSBOUZHVJEF7 &/
3
JOEE Or you...power supplies that are cracked, broken, or damaged.
• Signs of overheating, smoke, sparks, or fire.
• Damage to a battery (such as an extension cord) that is not manufactured for or by Lenovo...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 8
... the following warnings are required for customers to install options or replace CRUs.
Note: Some computer parts can be upgraded or replaced by the Customer Support Center or your safety. Lenovo provides documentation with an ac power cord, always make sure that the power is appropriate for your documentation. Keep fingers and other body parts...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 10
...related devices
Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use are rated to handle the electrical requirements of corrosion or overheating or... can eventually result in that the voltage provided is designed to the computer.
Always connect power cords and signal cables in the correct order and ensure that the voltage-selection switch is...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 12
... the battery leads, stop using the battery and obtain a replacement from the electrical outlet;
Do not expose the battery to overheat... power to instructions included in the product documentation. For some heat during normal operation. Batteries supplied by... system clock.
These features might inadvertently become blocked by Lenovo for use with the body could shorten the life of...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 13
... appliances such as this might increase
the risk of the computer including heat sink inlet fins, power supply vents, and fans. vents and perforations in or near a high-traffic area, inspect and,...frequent
cleanings might occur.
Failure to allow the cold computer to rise slowly to use non-desktop air filtration devices.
If liquid is plugged in. • Regularly inspect the outside of ...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 17
... to those that has the following label attached. Products with one of cable entry as possible to the point of these components. Power supply statement
Never remove the cover on a power supply or any component that has this label attached.
Users and installers in particular, specifies that are not applicable, it is recommended that...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 22
... even level with fine grounded cable to a comfort angle of environmental specifications and:
Adaptability index for product operation environment
Adaptability for power supply
220V ± 22V, 50Hz ± 1Hz (Only For China Desktop)
90V - 264V, 50/60Hz (Adaptive Voltage Positioning)
90V - 264V, 50Hz ± 1Hz (With Voltage-selection Switch )
Operating temperature
10˚...
Lenovo IdeaCentre B3 Safety and Warranty Guide V4.1 - Page 24
Warning Must fully remove the dustproof shield (if provided) to facilitate the heating eradiation and ventilation when the computer is running or before the power supply of the computer is completely switched off.
6. Keep the computer away from objects or environments with electromagnetic interference (EMI) such as magnets, working mobile phones ...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 2
...41 Removing and replacing the front bezel 42 Replacing a memory module 43 Replacing the hard disk drive 45 Replacing an optical drive 46 Replacing a PCIE adapter 47 Replacing the heatsink assembly 48 Replacing the CPU 50 Replacing the motherboard 53 Replacing the system fan assembly 54 Replacing the power supply 56 Replacing the keyboard 57 Replacing the mouse 58 Replacing the external...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 7
.... Observe the following rules when working in the off position.
5 Do not use this type of mat to work alone under hazardous conditions or near power supplies - Replace any other conditions that is worn or defective.
•• Reinstall all safety shields, guards, labels, and ground wires. Important: Use only approved tools and...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 8
...must be there to cause electrical shock. Remember: There must be a complete circuit to switch off power. - By observing the above rule, you need to work on suitable rubber mats (obtained locally, ... and machine damage. •• Do not service the following precautions: - Power supply units - Stand on a machine that another person to insulate you . Ensure that has ...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 9
... these conditions and the safety hazards they present: •• Electrical hazards, especially primary power (primary voltage on these products. Check exterior covers for :
a. A third-wire ground ...Disconnect the power cord. 3. Use a meter to protect users and service personnel from injury. b. Check for worn, frayed, or pinched cables. 8. Check that the power-supply cover fasteners...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 13
... 2. To remove all electrical current from the device, ensure that all power cords are disconnected from the power source.
2 1
CAUTION: Do not place any object weighing more than 82 kg (180 lbs.) on the power supply do not turn off the electrical current supplied to the device. Safety information
CAUTION: Use safe practices when lifting.
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 31
...the following for proper
Reseat connectors
installation.
•• Power Cord
•• On/Off Switch connector
•• On/Off Switch Power Supply
connector
•• System Board Power Supply
connectors
•• Microprocessor(s) connection
Check the power cord for
Power-on Switch
continuity.
29 Replace the hard disk drive.
FRU/Action
The drive must...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 37
Locations Microprocessor fan and heatsink Memory modules PCI Express adapter card PCI Express adapter connectors Power supply System fan Optical drive Hard disk drive
Locating connectors on the front of the computer
The following illustration shows the location of connectors on the front of the computer.
35 Chapter 8.
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 58
... the chassis. 5. Remove the computer cover. Slide and then lift the power supply out of the rubber mounts until the fan assembly is in . 6. Replacing the power supply
To replace the power supply:
1. Remove the 4 screws that are connected to the chassis.
4. Align then insert the new Power supply and screw it in place. 7. Connect the system fan assembly cable...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 63
... automatically.
•• Resume On Ring: With this cappability to control the power management features of the computer such as the system power supply, processor, hard disk drives, and some monitors. Automatic Power-On features
The Automatic Power-On features within the Power Management menu allow you to Enabled, the computer will be either a single event...
Lenovo H4 Series Hardware Maintenance Manual V2.0 - Page 64
... S3: This feature allows USB Device to control the power management features of the computer such as the system power supply, processor, hard disk drives, and some monitors. Not all operating systems support ACPI BIOS mode. Power Management features
The Power Management features within the Power menu allow you to enable and disable features that the...
Lenovo H4 Series Hardware Replacement Guide V1.0 - Page 7
Microprocessor fan and heatsink Memory modules
Hardware Replacement Guide
Power supply System fan
31045292_H4_HRG_EN_V1.0.indd 4
2010.9.19 11:11:08 AM
To remove the computer cover, refer to locate the various components in your computer. Locating ...
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