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Chapter 3. Idetifying FRUs (CRUs)

All FRUs (CRUs) for Lenovo N22–20 Chromebook

The exploded illustrations help Lenovo service technicians identify FRUs or CRUs that they may need
to replace when servicing a customer’s computer.

Refer to Appendix B “Lenovo part numbers for replacement FRUs” on page 43 if you need to look up
Lenovo part numbers for a particular FRU or CRU.

© Copyright Lenovo 2016

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Содержание N22-20

Страница 1: ...Hardware Maintenance Manual Lenovo N22 20 Chromebook ...

Страница 2: ......

Страница 3: ...Hardware Maintenance Manual Lenovo N22 20 Chromebook ...

Страница 4: ...First Edition February 2016 Copyright Lenovo 2016 ...

Страница 5: ...nes 25 Remove the upper case with keyboard 25 Remove the battery pack 27 Remove the speakers 28 Remove the USB board 28 Remove the WLAN Bluetooth combo module 29 Remove the LCD module 31 Remove the system board and the DC in cable 32 Disassemble the LCD module 33 Remove the LCD bezel 33 Remove the LCD panel 35 Remove the camera assembly or the LCD camera cable 36 Assemble camera parts 38 Remove th...

Страница 6: ...iv Hardware Maintenance Manual ...

Страница 7: ...e clothing or fasten it with a non conductive clip about 8 centimeters 3 inches from the end Do not wear jewelry chains metal frame eyeglasses or metal fasteners for your clothing Attention 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 hazardou...

Страница 8: ...efully for possible hazards in your work area Examples of these hazards are moist floors non grounded power extension cables power surges and missing safety grounds Do not touch live electrical circuits with the reflective surface of a plastic dental mirror The surface is conductive such touching can cause personal injury and machine damage Do not service the following parts with the power on when...

Страница 9: ...d sensitive to electrostatic discharge ESD ESD damage can occur when there is a difference in charge between objects Protect against ESD damage by equalizing the charge so that the machine the part the work mat and the person handling the part are all at the same charge Notes 1 Use product specific ESD procedures when they exceed the requirements noted here 2 Make sure that the ESD protective devi...

Страница 10: ... the electrical outlet can be verified by a certified electrician Safety notices multilingual translations The safety notices in this section are provided in the following languages English Arabic Brazilian Portuguese French German Hebrew Japanese Korean Spanish Traditional Chinese DANGER DANGER DANGER DANGER 4 Hardware Maintenance Manual ...

Страница 11: ...DANGER DANGER DANGER DANGER Chapter 1 Safety information 5 ...

Страница 12: ...6 Hardware Maintenance Manual ...

Страница 13: ...PERIGO PERIGO PERIGO PERIGO Chapter 1 Safety information 7 ...

Страница 14: ...PERIGO PERIGO PERIGO PERIGO DANGER DANGER 8 Hardware Maintenance Manual ...

Страница 15: ...DANGER DANGER DANGER DANGER DANGER Chapter 1 Safety information 9 ...

Страница 16: ...DANGER VORSICHT VORSICHT VORSICHT VORSICHT 10 Hardware Maintenance Manual ...

Страница 17: ...VORSICHT VORSICHT VORSICHT VORSICHT Chapter 1 Safety information 11 ...

Страница 18: ...12 Hardware Maintenance Manual ...

Страница 19: ...Chapter 1 Safety information 13 ...

Страница 20: ...14 Hardware Maintenance Manual ...

Страница 21: ...Chapter 1 Safety information 15 ...

Страница 22: ...16 Hardware Maintenance Manual ...

Страница 23: ...Chapter 1 Safety information 17 ...

Страница 24: ...18 Hardware Maintenance Manual ...

Страница 25: ... nondefective FRU What to do first When you return a FRU you must include the following information in the parts exchange form or parts return form that you attach to it 1 Name and phone number of service technician 2 Date of service 3 Date on which the machine failed 4 Date of purchase 5 Failure symptoms error codes appearing on the display and beep symptoms 6 Procedure index and page number in w...

Страница 26: ...If the computer fails only when the ac power adapter is used refer to the information in this topic to check the ac power adapter If the power on indicator does not turn on check the power cord of the ac power adapter for correct continuity and installation To check the ac power adapter do the following 1 Unplug the ac power adapter cable from the computer 2 Measure the output voltage across the p...

Страница 27: ...ations help Lenovo service technicians identify FRUs or CRUs that they may need to replace when servicing a customer s computer Refer to Appendix B Lenovo part numbers for replacement FRUs on page 43 if you need to look up Lenovo part numbers for a particular FRU or CRU Copyright Lenovo 2016 21 ...

Страница 28: ... 2 5 10 Figure 1 N22 20 exploded view Table 1 FRU CRU categories No FRU CRU category 1 LCD module 2 Foot rubber pack 3 Upper case with keyboard 4 Battery pack 5 System board 6 Speakers 22 Hardware Maintenance Manual ...

Страница 29: ... 7 WLAN Bluetooth combo module 8 USB board 9 DC in cable 10 Base cover 1 3 6 3 2 5 4 Figure 2 LCD module exploded view Table 2 FRU categories for the LCD module No FRU CRU category 1 LCD bezel 2 LCD panel Chapter 3 Idetifying FRUs CRUs 23 ...

Страница 30: ...Table 2 FRU categories for the LCD module continued 3 Hinges 4 LCD camera cable 5 Camera assembly 6 LCD base cover 24 Hardware Maintenance Manual ...

Страница 31: ...neous parts on page 45 for replacement screws and order them through the Lenovo CRM system 7 When replacing the base cover reapply all labels that come with the replacement base cover If some original labels are not included with the replacement base cover peal them off from the original base cover and paste them on the replacement base cover Refer to Appendix D Label locations on page 49 for the ...

Страница 32: ...ecifications Color Torque on base cover 10 M2 4 5mm flat head nylon coated Black 1 85 0 15kgf cm Step 3 Turn over the Chromebook and open the LCD cover to 180 degrees Step 4 Use a pry bar to slide through the grooves between the upper case and the base cover slowly lift the upper case until the keyboard socket and the touch pad socket appear Attention Do not pull up the upper case before detaching...

Страница 33: ...ber pack Remove the battery pack Make sure the following FRUs or CRUs have been removed Remove the upper case with keyboard on page 25 Step 1 Unplug the battery cable from the system board and take the cable out of the cable guiders Attention Use your fingernail to pull the connector to unplug it Do not pull the cable itself Step 2 Remove the screws and take out the battery pack Figure 6 Remove sc...

Страница 34: ... the battery pack on page 27 Step 1 Unplug the speakers cable from the system board Figure 7 Unplug the speakers cable from the system board Step 2 Carefully remove the speakers off the piles Refer to Table 12 Part numbers for FRUs CRUs on page 43 to look up the Lenovo part numbers of replacement speakers Remove the USB board Make sure the following FRUs CRUs have been removed Remove the upper cas...

Страница 35: ...page 43 to look up the Lenovo part numbers of replacement USB board Remove the WLAN Bluetooth combo module Make sure the following FRUs CRUs have been removed and the battery connector has been detached Remove the upper case with keyboard on page 25 Step 1 Disconnect the white and black cables from the WLAN Bluetooth combo module 1 Chapter 4 Removing a FRU or CRU 29 ...

Страница 36: ... card to base cover 1 M2 3mm flat head nylon coated Black 1 85 0 15kgf cm b Figure 11 Remove one screw Step 3 Pull out the WLAN Bluetooth combo module in the direction shown by the arrow 3 c Figure 12 Pull out the WLAN Bluetooth combo module Refer to Table 12 Part numbers for FRUs CRUs on page 43 to look up the Lenovo part numbers of replacement WLAN Bluetooth combo modules 30 Hardware Maintenance...

Страница 37: ...etooth combo module on page 29 Step 1 Open the socket and detach the LCD cable 1 a Figure 13 Unplug the LCD cable Step 2 Remove the screws b b b b Figure 14 Remove 4 screws Table 6 Screw specifications removing the LCD module Screw location Number Specifications Color Torque LCD to base cover 4 M2 5 54 mm flat head nylon coated Black 3 7 4 0 kgf cm Chapter 4 Removing a FRU or CRU 31 ...

Страница 38: ...5 Remove the battery pack on page 27 Remove the speakers on page 28 Remove the USB board on page 28 Remove the WLAN Bluetooth combo module on page 29 Remove the LCD module on page 31 Step 1 Unplug the DC in cable 1 a Figure 15 Unplug the DC in cable Step 2 Remove the screws and take out the system board Table 7 Screw specifications removing the LCD module Screw location Screw used for Specificatio...

Страница 39: ...ng replacement parts System board DC in cable Base cover Disassemble the LCD module The LCD module as a whole is not a FRU Instead it contains FRUs as its components Before disassembling the LCD module make sure it has been detached from the base cover Refer to Remove the LCD module on page 31 for instructions Remove the LCD bezel Step 1 Pry the six rubbers 1 off the LCD bezel Chapter 4 Removing a...

Страница 40: ...cifications Color Torque LCD bezel to LCD base cover 6 M2 5 3 5 mm flat head nylon coated Black 3 7 4 0 kgf cm Step 3 Insert your fingernails under one inner side of the LCD bezel and the LCD panel and then carefully pull the LCD bezel outwards Repeat this action along the inner edges of the LCD bezel until all hooks that secure the LCD bezel are detached 3 34 Hardware Maintenance Manual ...

Страница 41: ...lacement LCD bezel Remove the LCD panel Make sure the following FRUs or CRUs have been removed Remove the LCD bezel on page 33 Step 1 Remove the four screws 1 with the bottom edge as an axis lift up the top edge of the LCD panel 2 Attention Do not remove the LCD panel at this step The LCD panel is connected by a cable at the back side Detach the cable before removing the LCD panel a a a a Figure 2...

Страница 42: ...ct the LCD cable from the back of the LCD panel Step 3 Remove the LCD panel Refer to Table 13 Part numbers for LCD FRUs on page 44 to look up the Lenovo part numbers for replacement LCD panels Remove the camera assembly or the LCD camera cable Make sure the following FRUs or CRUs have been removed Remove the LCD bezel on page 33 Remove the LCD panel on page 35 Step 1 Tear the camera mylar off the ...

Страница 43: ...ed to replace the LCD camera cable tear if off the LCD base cover If you need to replace the camera assembly remove the two screws that secure the camera on the LCD base cover Figure 26 Remove the camera module Refer to Table 13 Part numbers for LCD FRUs on page 44 to look up the Lenovo part numbers for replacement parts for Camera assembly LCD camera cable Chapter 4 Removing a FRU or CRU 37 ...

Страница 44: ...the LCD module Step 1 Connect the LCD cable with the camera board Figure 27 Connect with LCD cable Step 2 Install the camera assembly cover and secure it with screws Figure 28 Install camera cover Step 3 Paste the camera assembly mylar Figure 29 Paste camera mylar Remove the hinges Make sure the following FRUs or CRUs have been removed Remove the LCD bezel on page 33 38 Hardware Maintenance Manual...

Страница 45: ...and the WLAN antennas Screw location Number Specifications Color Torque hinges to LCD base cover 4 M2 5 3 5 mm flat head nylon coated Silver 3 7 4 0 kgf cm Step 2 Remove the hinges Refer to Appendix B Lenovo part numbers for replacement FRUs on page 43 to look up the Lenovo part numbers for the replacement hinges Chapter 4 Removing a FRU or CRU 39 ...

Страница 46: ...40 Hardware Maintenance Manual ...

Страница 47: ...s and connectors No Feature or connector 1 Swivel camera 2 Microphone hole 3 Handle bar 4 Shortcut keys 5 Touch pad 6 DC in jack 7 DC in indicator 8 HDMI connector 9 USB 3 0 connector 10 Memory card SD MMC slot 11 Combo audio jack 12 Speakers 13 Kensington lock slot 14 USB 2 0 connector 15 Power button Copyright Lenovo 2016 41 ...

Страница 48: ...42 Hardware Maintenance Manual ...

Страница 49: ...esla LG L15L3PB1 11 1V45Wh3cell bty 5B10K88049 5 System board MB Q 80SF N3050 4G 16G EMMC UMA 5B20L13245 MB Q 80SF N3050 2G 16G EMMC UMA 5B20L20420 MB Q 80SF N3050 4G 32G EMMC UMA 5B20L20421 MB Q 80SF N3050 2G 32G UMA 5B20L25524 MB Q 80SF N3060 2G 16G UMA 5B20L25527 MB Q 80SF N3060 2G 32G UMA 5B20L25522 MB Q 80SF N3060 4G 16G UMA 5B20L25528 MB Q 80SF N3060 4G 32G UMA 5B20L25531 MB Q 80SF N3160 2G ...

Страница 50: ...13 Part numbers for LCD FRUs No FRU CRU category Spare parts description Lenovo part number 1 LCD bezel LCD Bezel Q 80SF 5B30L13244 2 LCD panel AUO B116XTN02 3 2B HD AG S NB 5D10H11015 INX N116BGE EA2 C2 HD AG S NB 5D10H34460 IV M116NWR6 R0 HDT AG S NB 5D10K04184 BOE NT116WHM N21 HD AG S NB 5D10H34773 3 Hinges Hinge Q 80SF R L 5H50L13241 4 EDP cable and LCD cable LCD Cable Q 80SF 5C10L13235 5 Came...

Страница 51: ...NETEK LS15 H03VV F LP 41 1米电源线 145000595 LINETEK LP 30B SPT 2 LS15 1米电源线 145000594 LINETEK LP 61L H03VV F LS15 1米电源线 145000593 LINETEK PE 361 H05VV F LS15 1米电源线 145000592 LINETEK LS15 H03VV F PE 336 1米电源线 145000591 LINETEK LS15 H05VV F LP E04A 1米电源线 145000590 LINETEK LS15 H03VV F LP 23A 1米电源线 145000589 LINETEK LS15 VCTF LP 53 1米电源线 145000588 LINETEK LS15 VCTF LP 54 1米电源线 145000587 LINETEK LS15 H03...

Страница 52: ...10S3 H03VV F VAC5S 1米电源线 145000532 VOLEX TW15CS3 VCTF VAC5S 1米电源线 145000531 VOLEX VAC5S VCTF M755 1米电源线 145000530 VOLEX VA2073 H03VV F VAC5S 1米电源线 145000528 VOLEX CH10S3 H03VV F VAC5S 1米电源线 145000527 VOLEX SI16S3 H03VV F VAC5S 1米电源线 145000526 VOLEX M2511 HO3VV F VAC5S 1米电源线 145000525 lux 0036 RVV 300 300 0 75 3C 0002 1米电源线 145500003 lux 0040 H03VV F 0 75 3C 0011 1米电源线 145500015 lux 0048 H03VV F 0 ...

Страница 53: ...r FRUs CRUs continued lux 0018 E VCTF 0 75 3C 0021 1米电源线 145500005 lux 0044 H03VV F 0 75 3C 0011 1米电源线 145500010 lux 0033 H03VV F 0 75 3C 0011 1米电源线 145500001 Appendix C Lenovo part numbers for CRUs and miscellaneous parts 47 ...

Страница 54: ...48 Hardware Maintenance Manual ...

Страница 55: ...lacement base cover Table 15 All base cover labels Label Label description Applied country region Label dimensions a Rating label and rating print label all 109 mm x 24 mm b Malaysia SIRIM label Malaysia 15 mm x 10 mm Korea KCC label Korea 35 mm x 12 mm c Indonesia WLAN label Indonesia 32 mm x 10 mm d Indonesia rating label Indonesia 32 mm x 10 mm e Israel label Israel 32 mm x 10 mm Copyright Leno...

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Страница 57: ...Trademarks Lenovo and the lenovo logo are trademarks of Lenovo in the United States other countries or both Other company product or service names may be trademarks or service marks of others ...

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