Lenovo G50 Manitenance Manual
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27 Lenovo G50-70/G50-70m/Z50-70 Table 1. Specifications (continued) FeatureDescription Keyboard• 6 rows Lenovo KeyboardTouchpad • Multi-touch typeIntegrated camera• HD (720p)/0.3 M Battery• 4 cell, 2,200 mAh / 2,800 mAhAC adapter• 20 V, 65 W or 45 WPre-installed operating system • Windows 8.1
28 G50-70/G50-70m/Z50-70 Hardware Maintenance Manual Status indicators The system status indicators below show the computer status: Table 2. Status indicators IndicatorIndicatorstatusChargestatusMeaning 1 Power On (solid white)---The computer is powered on.Blinking---The computer is in sleep mode. Off---The computer is powered off. 2 Battery On (solid white)ChargingThe battery has more than 80% charge. DischargingThe battery has more than 20% charge. On (solid amber)DischargingThe battery has between 5% and 20% charge. Blinking slowly (white)Charging The battery has between 20% and 80% charge. When the battery reaches 80% charge, the light will stop blinking. However, charging will continue until the battery is fully charged. Blinking slowly (amber)Charging The battery has less than 20% charge. When the battery charge reaches 20%, the blinking color will change to white. Blinking quickly (amber)Charging/DischargingThe battery has less than 5% charge.
29 Lenovo G50-70/G50-70m/Z50-70 Hotkeys You can access certain system settings quickly by pressing the appropriate hotkeys. Table 3. Hotkeys :Mutes/unmutes the sound. :Decreases the volume level. :Increases the volume level. :Closes the currently active window. :Refreshes the desktop or the currently active window. :Enables/disables the touchpad. :Enables/disables Airplane mode. :Displays all currently active apps. :Turns on/off the backlight of the LCD screen. :Toggles the display between the computer and an external device. :Decreases display brightness. :Increases display brightness.
30 G50-70/G50-70m/Z50-70 Hardware Maintenance Manual 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: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.
31 Lenovo G50-70/G50-70m/Z50-70 Removing and replacing an FRU This section presents exploded figures with the instructions to indicate how to remove and replace the FRU. Make sure to observe the following general rules: 1. Do not attempt to service any computer unless you have been trained and certified. An untrained person runs the risk of damaging parts. 2. Before replacing any FRU, review “FRU replacement notices” on page 30. 3. Begin by removing any FRUs that have to be removed before the failing FRU. Any of such FRUs are listed at the top of the page. Remove them in the order in which they are listed. 4. Follow the correct sequence in the steps to remove the FRU, as given in the figures by the numbers in square callouts. 5. When turning a screw to replace an FRU, turn it in the direction as given by the arrow in the figure. 6. When removing the FRU, move it in the direction as given by the arrow in the figure. 7. To put the new FRU in place, reverse the removal procedures and follow any of the notes that pertain to replacement. For information about connecting and arranging internal cables, see “Locations” on page 67. 8. When replacing an FRU, use the correct screw as shown in the procedures. DANGER Before removing any FRU, turn off the computer, unplug all power cords from electrical outlets, remove the battery pack, and then disconnect any of the interconnecting cables. Attention: After replacing an FRU, do not turn on the computer until you have made sure that all screws, springs, and other small parts are in place and none are loose inside the computer. Verify this by shaking the computer gently and listening for rattling sounds. Metallic parts or metal flakes can cause electrical short circuits. Attention: The system board is sensitive to, and can be damaged by, electrostatic discharge. Before touching it, establish personal grounding by touching a ground point with one hand or using an electrostatic discharge (ESD) strap (P/N 6405959) to remove potential shock reasons. Notes: • The following procedures about removing and replacing FRUs are the same for the Lenovo G50-70/G50-70m/Z50-70. • The illustrations used in this section are of the Lenovo G50-70, unless otherwise stated.
32 G50-70/G50-70m/Z50-70 Hardware Maintenance Manual 1010 Battery pack DANGER Only use the battery specified in the parts list for your computer. Any other battery could ignite or explode. Figure 1. Removal steps of battery pack Unlock the manual latch 1. Slide the spring-loaded latch to the unlocked position 2 to eject the battery pack. Lift up the inner edge of the battery pack, pivoting it on the outer edge 3. Gently raise the battery pack in the indicated direction 4 to remove it.
33 Lenovo G50-70/G50-70m/Z50-70 1020 Base cover For access, remove this FRU: • “1010 Battery pack” on page 32 Figure 2. Removal steps of base cover Remove the screws 1. Then remove the base cover 2. StepScrew (quantity)ColorTorque 1M2.5 × 6 mm, flat-head, nylok-coated (3) Big Door to DBlack2.5 ~ 3.0 kgf*cm
34 G50-70/G50-70m/Z50-70 Hardware Maintenance Manual Note: Applying labels to the base cover The new base cover FRU is shipped with a kit containing labels of several kinds. When you replace the base cover, you need to apply the following label: The following labels need to be peeled off from the old base cover and put on the new base cover. a Rating label b Indonesia D side label c Brazil BT label d Brazil WL label e Israel WL label f SIRIM BT labelg SIRIM WL label h WL label for US/CA/TW/Indonesia i BT label for US/CA/TW/Indonesiaj KCC label k BIS label l Windows 8 OS label For some models, you also need to apply one or two FCC labels. Check the old base cover; if it has one or two FCC labels, find duplicates of them in the label kit and apply them to the new base cover. For the location of each label, refer to the following figure: DCC EFLMG HI JK N
35 Lenovo G50-70/G50-70m/Z50-70 1030 Optical drive For access, remove this FRU: • “1010 Battery pack” on page 32• “1020 Base cover” on page 33 Figure 3. Removal steps of optical drive Remove the screw 1. Pull the optical drive out in the direction shown by arrow 2. StepScrew (quantity)ColorTorque 1M2 × 6 mm, flat-head, nylok-coated (1)ODD BRK + DBlack1.5 ~ 2.0 kgf*cm Remove the screw 3, then remove the optical drive bracket in the direction shown by arrow 4. 3 4 StepScrew (quantity)ColorTorque 3M2 × 2.5 mm, flat-head, nylok-coated (1)ODD BKT + ODD Black1.5 ~ 2.0 kgf*cm Carefully remove the optical drive bezel in the direction shown by arrow 5. 5
36 G50-70/G50-70m/Z50-70 Hardware Maintenance Manual 1040 Hard disk drive For access, remove these FRUs in order: • “1010 Battery pack” on page 32• “1020 Base cover” on page 33 Attention: • Do not drop the hard disk drive or apply any physical shock to it. The hard disk drive is sensitive to physical shock. Improper handling can cause damage and permanent loss of data. • Before removing the drive, suggest the customer to backup all the information on it if possible. • Never remove the drive while the system is operating or in suspend mode. Figure 4. Removal steps of hard disk drive Remove the screws 1. Detach the HDD connector and then remove the hard disk drive from the slot in the direction shown by arrow 2. StepScrew (quantity)ColorTorque 1M2 × 6 mm, flat-head, nylok-coated (3)HDD BRK + D Black1.5 ~ 2.0 kgf*cm When installing: Make sure that the HDD connector is attached firmly.