This User Guide contains detailed information on the Lenovo ThinkCentre® Tiny-in-One 23. For a quick overview, please see the Setup Poster that was shipped with your monitor. Shipping contents. The product package should include the following items: Information flyer Reference and driver CD Power cord ac power adapter Monitor base.
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Lenovo Laptop User Manual
Hardware Maintenance Manual
46
13. To secure the microprocessor in the socket, close the microprocessor
retainer and lock it into position with the small handle.
14. Use a thermal grease syringe to place 5 drops of grease on the top of
the microprocessor. Each drop of grease should be 0.03ml (3 tick marks
on the grease syringe).
15. Install the system fan and heatsink back.
16. Install the EMI cover, back deco, the computer cover and the computer
stand back.
Replacing the rear I/O module
To replace the rear I/O module:
1. Remove the computer cover. Refer to “Removing the computer cover”.
2. Remove the back deco. Refer to “Removing the back deco”.
3. Remove the computer stand. Refer to “Removing the computer stand”.
4. Remove the EMI cover. Refer to “Removing the EMI cover”.
5. Remove the 4 screws that secure the rear I/O module and metal
bracket to the chassis.
6. Disconnect the TV antenna cable from the TV tuner card.
7. Lift up the rear I/O module.
Lenovo User Guides And Manuals
31
Lenovo G50-30/G50-45/G50-70/G50-70m/Z50-70/Z50-75
FRU replacement notices
This section presents notices related to removing and replacing parts. Read
this section carefully before replacing any FRU.
Screw notices
Loose screws can cause a reliability problem. In the Lenovo computer, this
problem is addressed with special nylon-coated screws that have the following
characteristics:
• They maintain tight connections.
• They do not easily come loose, even with shock or vibration.
• They are harder to tighten.
• Each one should be used only once.
Do the following when you service this machine:
• Keep the screw kit in your tool bag.
• Carefully remove screws for reuse when replacing FRUs.
• Use a torque screwdriver if you have one.
Tighten screws as follows:
•
Plastic to plastic
Turn an additional 90° after the screw head touches the surface of the
plastic part:
Lenovo User Manual Download
more than 90°
(Cross-section)
•
Logic card to plastic
Turn an additional 180° after the screw head touches the surface of the
logic card:
more than 180°
(Cross-section)
•
Torque driver
If you have a torque screwdriver , refer to the “Torque” column for each step.
• Make sure that you use the correct screws. If you have a torque screwdriver,
tighten all screws firmly to the torque shown in the table.
Carefully remove
screws for reuse when replacing FRUs. Make sure that all screws are
tightened firmly.
• Ensure torque screwdrivers are calibrated correctly following country
specifications.