Safety and General Information Guide - Notebook
Page 20
... in your computer by the bottom. Do not pick up your open computer, hold your car, place it by the display. • Use a quality carrying case that the battery is in sleep or hibernation mode, or turned off the power and close the LCD well. • When you leave the computer...
... in your computer by the bottom. Do not pick up your open computer, hold your car, place it by the display. • Use a quality carrying case that the battery is in sleep or hibernation mode, or turned off the power and close the LCD well. • When you leave the computer...
Safety and General Information Guide - Notebook
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... your system Note: For the latest list of customer support center telephone numbers and hours of operation, go to http://support.lenovo.com. Chapter 3. When calling for technical assistance, please have downloaded the most current drivers and system updates, and recorded information before... you call in case the technical assistance representative needs to help and service Refer to your Lenovo hardware warranty for a full explanation of purchase to retain your call . If possible, be near...
... your system Note: For the latest list of customer support center telephone numbers and hours of operation, go to http://support.lenovo.com. Chapter 3. When calling for technical assistance, please have downloaded the most current drivers and system updates, and recorded information before... you call in case the technical assistance representative needs to help and service Refer to your Lenovo hardware warranty for a full explanation of purchase to retain your call . If possible, be near...
(English) User Guide - Lenovo N21 Chromebook
Page 8
...turned on . Conditions that the product should not be safe and effective. Carry your computer carefully. • Use a quality carrying case that can become damaged due to the product when it is serious enough that require immediate action Products can result in hibernation mode. ...work environment. To reduce these risks, follow the instructions in a safe and controlled manner. However, do not use your purchase agreement or the Lenovo® Limited Warranty. Do not drop, bump, scratch, twist, hit, vibrate, push, or place heavy objects on how to diagnose the ...
...turned on . Conditions that the product should not be safe and effective. Carry your computer carefully. • Use a quality carrying case that can become damaged due to the product when it is serious enough that require immediate action Products can result in hibernation mode. ...work environment. To reduce these risks, follow the instructions in a safe and controlled manner. However, do not use your purchase agreement or the Lenovo® Limited Warranty. Do not drop, bump, scratch, twist, hit, vibrate, push, or place heavy objects on how to diagnose the ...
(English) User Guide - Lenovo N21 Chromebook
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... systems, you to the folder where unused files are stored. The Files app Your Chromebook has a Files app for you can only view and edit files in the lower right corner. © Copyright Lenovo 2014 5 On the left pane, select the storage space and then navigate to manage... in to save files of various formats. You can download and install Google Drive on your online storage space. Delete unused files In some cases, you may reside on your local storage device, a connected external storage device, or Google Drive. Create folders using the Files app You...
... systems, you to the folder where unused files are stored. The Files app Your Chromebook has a Files app for you can only view and edit files in the lower right corner. © Copyright Lenovo 2014 5 On the left pane, select the storage space and then navigate to manage... in to save files of various formats. You can download and install Google Drive on your online storage space. Delete unused files In some cases, you may reside on your local storage device, a connected external storage device, or Google Drive. Create folders using the Files app You...
Hardware Maintenance Manual - Lenovo N21 Chromebook
Page 5
...requirements 4 Safety notices (multilingual translations) . . . . . 4 Chapter 2. Removing a FRU or CRU . 27 General guidelines 27 Remove the upper case and the battery. . . . . 27 Remove the speakers 31 Remove the I/O board 32 Remove the WLAN & Bluetooth combo module. . 33 ... Appendix B. Idetifying FRUs (CRUs) . . 21 All FRUs (CRUs) for Lenovo N21 Chromebook . . 21 Lenovo part numbers of ac adapters and power cords . . . . 51 Appendix E. Label locations. . . . . . 53 Trademarks lv © Copyright Lenovo 2015 iii Safety information . . . . . 1 General safety 1 Electrical ...
...requirements 4 Safety notices (multilingual translations) . . . . . 4 Chapter 2. Removing a FRU or CRU . 27 General guidelines 27 Remove the upper case and the battery. . . . . 27 Remove the speakers 31 Remove the I/O board 32 Remove the WLAN & Bluetooth combo module. . 33 ... Appendix B. Idetifying FRUs (CRUs) . . 21 All FRUs (CRUs) for Lenovo N21 Chromebook . . 21 Lenovo part numbers of ac adapters and power cords . . . . 51 Appendix E. Label locations. . . . . . 53 Trademarks lv © Copyright Lenovo 2015 iii Safety information . . . . . 1 General safety 1 Electrical ...
Hardware Maintenance Manual - Lenovo N21 Chromebook
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...• When lifting any other conditions that is long, fasten it. • Insert the ends of the object equally between your tool case away from the muscles in the moving parts of internal components. Do not use this action removes the strain from walk areas so that ...outlet. Safety information This chapter presents the following rules when working with live electrical currents.Many customers have, near power supplies © Copyright Lenovo 2015 1 Do not attempt to be trapped in your elbows. Distribute the weight of your leg muscles; Do not obstruct fan louvers or ...
...• When lifting any other conditions that is long, fasten it. • Insert the ends of the object equally between your tool case away from the muscles in the moving parts of internal components. Do not use this action removes the strain from walk areas so that ...outlet. Safety information This chapter presents the following rules when working with live electrical currents.Many customers have, near power supplies © Copyright Lenovo 2015 1 Do not attempt to be trapped in your elbows. Distribute the weight of your leg muscles; Do not obstruct fan louvers or ...
Hardware Maintenance Manual - Lenovo N21 Chromebook
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FRU (CRU) categories No. 3 7 10 11 Figure 1. FRU (CRU) category 1 LCD module 2 Foot rubber pack 3 Upper case 4 Battery pack 5 Thermal module 6 System board 22 Hardware Maintenance Manual 1 2 4 5 6 8 9 CRU ID N N N N N N N21 exploded view Table 1.
FRU (CRU) categories No. 3 7 10 11 Figure 1. FRU (CRU) category 1 LCD module 2 Foot rubber pack 3 Upper case 4 Battery pack 5 Thermal module 6 System board 22 Hardware Maintenance Manual 1 2 4 5 6 8 9 CRU ID N N N N N N N21 exploded view Table 1.
Hardware Maintenance Manual - Lenovo N21 Chromebook
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Table 1. A single asterisk (*) means that the part is a Self-service CRU; FRU (CRU) categories (continued) 7 Speakers N 8 WLAN & Bluetooth combo module N 9 I/O board N 10 DC-in cable N 11 Lower case N ac power adapter * Power cord * Note: A customer replaceable unit (CRU) is an Optional-service CRU. Chapter 3. A Letter "N" in the CRU ID column. Idetifying FRUs (CRUs) 23 two asterisks (**) means that the part is identified by a single asterisk (*) or two asterisks (**) in the CRU ID column means that the part is not a CRU.
Table 1. A single asterisk (*) means that the part is a Self-service CRU; FRU (CRU) categories (continued) 7 Speakers N 8 WLAN & Bluetooth combo module N 9 I/O board N 10 DC-in cable N 11 Lower case N ac power adapter * Power cord * Note: A customer replaceable unit (CRU) is an Optional-service CRU. Chapter 3. A Letter "N" in the CRU ID column. Idetifying FRUs (CRUs) 23 two asterisks (**) means that the part is identified by a single asterisk (*) or two asterisks (**) in the CRU ID column means that the part is not a CRU.
Hardware Maintenance Manual - Lenovo N21 Chromebook
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... for the LCD module (continued) 7 WLAN antennas N 8 LCD base cover N Lenovo part numbers of replacement FRUs or CRUs When servicing a customer's computer, Lenovo service technicians may use part numbers listed in cable I/O Board Q N21 W/Cable 11 Lower case DC/IN Cable Q N21 Lower Case Q N21 W/Root Rubber Lenovo part number 5CB0H70355 5CB0G15038 5B10H33230 5H40H70348 5B20H70345 5B20H70352 5SB0H70351 20200552...
... for the LCD module (continued) 7 WLAN antennas N 8 LCD base cover N Lenovo part numbers of replacement FRUs or CRUs When servicing a customer's computer, Lenovo service technicians may use part numbers listed in cable I/O Board Q N21 W/Cable 11 Lower case DC/IN Cable Q N21 Lower Case Q N21 W/Root Rubber Lenovo part number 5CB0H70355 5CB0G15038 5B10H33230 5H40H70348 5B20H70345 5B20H70352 5SB0H70351 20200552...
Hardware Maintenance Manual - Lenovo N21 Chromebook
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... establish personal grounding by touching a ground point with one hand or by shaking the computer gently and listening for rattling sounds. Remove the upper case and the battery Step 1. Do not try to replacement. 6. Remove them in the order in square callouts. 4. Follow the correct sequence in...and other small parts are in Appendix C "Lenovo part numbers of the base cover. Attention: The system board is sensitive to Appendix E "Label locations" on page 53 for the layout of labels on the back side of screws used on N21 Chromebook" on the computer until you have ensured ...
... establish personal grounding by touching a ground point with one hand or by shaking the computer gently and listening for rattling sounds. Remove the upper case and the battery Step 1. Do not try to replacement. 6. Remove them in the order in square callouts. 4. Follow the correct sequence in...and other small parts are in Appendix C "Lenovo part numbers of the base cover. Attention: The system board is sensitive to Appendix E "Label locations" on page 53 for the layout of labels on the back side of screws used on N21 Chromebook" on the computer until you have ensured ...
Hardware Maintenance Manual - Lenovo N21 Chromebook
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Pry rubbers out of recesses Note: Each recess is marked with a number, please make sure that all rubbers are put in the right recesses when installing. Remove 10 screws Step 3. Turn over the Chromebook and open the LCD cover. Use a pry bar to slide through the grooves between the upper case and the base cover 6 , and then slowly lift the upper case until the keyboard socket appears 7 . 28 Hardware Maintenance Manual Step 2. Remove the ten screws 5 . Step 4. c b d a Figure 3. e e e e e e e e e e Figure 4.
Pry rubbers out of recesses Note: Each recess is marked with a number, please make sure that all rubbers are put in the right recesses when installing. Remove 10 screws Step 3. Turn over the Chromebook and open the LCD cover. Use a pry bar to slide through the grooves between the upper case and the base cover 6 , and then slowly lift the upper case until the keyboard socket appears 7 . 28 Hardware Maintenance Manual Step 2. Remove the ten screws 5 . Step 4. c b d a Figure 3. e e e e e e e e e e Figure 4.
Hardware Maintenance Manual - Lenovo N21 Chromebook
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Lift the upper case Step 5. Note: The Chromebook will be powered on automatically when LCD cover is unplugged before doing the following operations. Chapter 4. Unplug the battery cable Step 6. Therefore, please make sure that the battery cable is open. h Figure 6. Removing a FRU or CRU 29 Detach the touchpad cable 9 . Unplug the battery cable 8 . Open the keyboard socket 10 , pull out the keyboard cable 11 , and then remove the upper case in the direction shown by arrow 12 . Step 7. g f Figure 5.
Lift the upper case Step 5. Note: The Chromebook will be powered on automatically when LCD cover is unplugged before doing the following operations. Chapter 4. Unplug the battery cable Step 6. Therefore, please make sure that the battery cable is open. h Figure 6. Removing a FRU or CRU 29 Detach the touchpad cable 9 . Unplug the battery cable 8 . Open the keyboard socket 10 , pull out the keyboard cable 11 , and then remove the upper case in the direction shown by arrow 12 . Step 7. g f Figure 5.
Hardware Maintenance Manual - Lenovo N21 Chromebook
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... shown by arrow 14 . Detach the touchpad cable and the keyboard cable Step 8. l i j k Figure 7. Screw specifications - Remove the battery Table 5. removing the upper case and the battery Screw label 5 13 Specifications M2 × 4.5mm, flat-head, nylon-coated M2 × 3mm, flat-head, nylon-coated Color Black Black Torque... 1.85 +/- 0.15kgf-cm 1.85 +/- 0.15kgf-cm Refer to Table 3 "Part numbers for FRUs (CRUs)" on page 25 to look up the Lenovo part numbers of the following replacement parts: Upper case Foot rubber pack battery pack 30 Hardware Maintenance Manual
... shown by arrow 14 . Detach the touchpad cable and the keyboard cable Step 8. l i j k Figure 7. Screw specifications - Remove the battery Table 5. removing the upper case and the battery Screw label 5 13 Specifications M2 × 4.5mm, flat-head, nylon-coated M2 × 3mm, flat-head, nylon-coated Color Black Black Torque... 1.85 +/- 0.15kgf-cm 1.85 +/- 0.15kgf-cm Refer to Table 3 "Part numbers for FRUs (CRUs)" on page 25 to look up the Lenovo part numbers of the following replacement parts: Upper case Foot rubber pack battery pack 30 Hardware Maintenance Manual