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Grounding requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper
grounding of 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

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Lenovo Chromebook C340 and S340 Hardware Maintenance Manual

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Содержание Chromebook C340

Страница 1: ...Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 2: ...First Edition May 2019 Copyright Lenovo 2019 ...

Страница 3: ...28 Remove the lower case 28 Remove the battery pack 29 Remove the I O board with cable 31 Remove the WLAN card 32 Remove the system board 33 Remove the speakers 35 Remove the thermal pad 36 Remove the upper case 37 Remove the LCD module 38 Remove the camera 40 Remove the hinges 41 Remove the LVDS cable 42 Removal procedure for S340 14 models 43 Remove the lower case 43 Remove the battery pack 44 R...

Страница 4: ...ii Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 5: ...hromebook C340 11 81TA Lenovo Chromebook S340 14 81TB Lenovo Chromebook S340 14 Touch 81V3 Important This manual is intended only for trained service technicians who are familiar with Lenovo products Before servicing a Lenovo product be sure to read all the information under Chapter 1 Safety information on page 1 Copyright Lenovo 2019 iii ...

Страница 6: ...iv Lenovo Chromebook C340 and S340 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: ...ble 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 they are remove...

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: ...cal 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 4 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 12: ...6 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 14: ...PERIGO PERIGO PERIGO PERIGO PERIGO 8 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 16: ...DANGER DANGER DANGER DANGER VORSICHT 10 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 18: ...VORSICHT VORSICHT VORSICHT 12 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 20: ...14 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 22: ...16 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

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

Страница 24: ...18 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 25: ...Chapter 1 Safety information 19 ...

Страница 26: ...20 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 27: ...hen 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 which the failing FRU was detected 7 ...

Страница 28: ...Missing parts might be a symptom of unauthorized service or modification Check for obvious damage to a hard disk drive If the spindle of a hard disk drive becomes noisy the hard disk drive might have been dropped or subject to excessive force CRU list Table 1 Model Lenovo Chromebook C340 11 Machine type 81TA CRU Type ac power adapter self service power cord self service Table 2 Model Lenovo Chrome...

Страница 29: ...r CRU that they may need to replace when servicing a customer s computer C340 11 Figure 1 Lenovo Chromebook C340 11 exploded view Table 4 FRU CRU categories No FRU CRU category 1 Camera 2 LCD cover 3 LVDS cable 4 Strip cover 5 Hinge 6 Hinge cable rubber 7 Upper case 8 Speakers 9 WLAN card 10 I O board Copyright Lenovo 2019 23 ...

Страница 30: ...Table 4 FRU CRU categories continued 11 Battery pack 12 Lower case 13 System board 14 LCD panel 24 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 31: ...S340 14 Figure 2 Lenovo Chromebook S340 14 exploded view Chapter 3 Idetifying FRUs CRUs 25 ...

Страница 32: ...r 2 LCD bezel 3 Camera 4 LCD bracket 5 Hinge 6 LCD panel 7 Hinge cover 8 Upper case 9 Speakers 10 WLAN card 11 I O board 12 Lower case 13 Battery pack 14 System board 15 Thermal pad 16 LVDS cable 26 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 33: ...ctrical tape Double sided tape Conductive tape Eraser Heat gun Brown brush Notes T30 screw drivers are used to service the new Intel Xeon CPUs Hexagonal sockets are used to remove antenna connectors Silicone grease is applied to the CPU and heatsink surfaces to eliminate air gaps General guidelines When removing or replacing a FRU ensure that you observe the following general guidelines 1 Do not t...

Страница 34: ...t down the computer and unplug all power cords from electrical outlets Attention After replacing a FRU do not turn on the computer until you have ensured 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 Atte...

Страница 35: ...he lower case Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Lower case Remove the battery pack Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Step 1 Disconnect the I O board cable from the system board and the I O board Chapter 4 Removing a FRU or CRU 29 ...

Страница 36: ...lug it Do not pull the cable Step 3 Remove four screws and then remove the battery pack Figure 6 Remove the battery pack Screw specification Number of screws M2 x 4 4 Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Battery pack 30 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 37: ...r case on page 28 Remove the battery pack on page 29 Step 1 Disconnect the cable of the I O board from the system board Figure 7 Disconnect the cable of the I O board Step 2 Remove four screws Figure 8 Remove four screws Screw specification Number of screws M2 x 4 4 Chapter 4 Removing a FRU or CRU 31 ...

Страница 38: ...lowing replacement part I O board with cable Remove the WLAN card Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Remove the I O board with cable on page 31 Step 1 Disconnect the antenna cables from the WLAN card 32 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 39: ...ne screw and remove the WLAN card Screw specification Number of screw M2 x 2 5 1 Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part WLAN card Remove the system board Make sure the following FRU or CRU have been removed Chapter 4 Removing a FRU or CRU 33 ...

Страница 40: ... cable on page 31 Remove the WLAN card on page 32 Step 1 Disconnect cables connected to the system board Figure 12 Disconnect cables Step 2 Remove ten screws Figure 13 Remove ten screws Screw specification Number of screws M2 x 4 10 34 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 41: ...part numbers of the following replacement part System board Remove the speakers Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Step 1 Disconnect the cable of the speakers from the system board Figure 15 Disconnect the cable Chapter 4 Removing a FRU or CRU 35 ...

Страница 42: ...t parts Speakers Remove the thermal pad Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Remove the I O board with cable on page 31 Remove the WLAN card on page 32 Remove the system board on page 33 Step 1 Carefully remove the thermal pad 36 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 43: ...e upper case Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Remove the I O board with cable on page 31 Remove the WLAN card on page 32 Remove the system board on page 33 Remove the speakers on page 35 Remove the thermal pad on page 36 Step 1 Remove six screws Chapter 4 Removing a FRU or CRU 37 ...

Страница 44: ... Remove the upper case Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Upper case Remove the LCD module Make sure the following FRU or CRU have been removed Remove the lower case on page 28 38 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 45: ...d on page 32 Remove the system board on page 33 Remove the speakers on page 35 Remove the thermal pad on page 36 Remove the upper case on page 37 Step 1 Remove the strip cover Figure 20 Remove the strip cover Step 2 Remove three screws Figure 21 Remove three screws Chapter 4 Removing a FRU or CRU 39 ...

Страница 46: ...amera Make sure the following FRU or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Remove the I O board with cable on page 31 Remove the WLAN card on page 32 Remove the system board on page 33 Remove the speakers on page 35 Remove the thermal pad on page 36 Remove the upper case on page 37 Remove the LCD module on page 38 Step 1 Disconnect the camera con...

Страница 47: ... or CRU have been removed Remove the lower case on page 28 Remove the battery pack on page 29 Remove the I O board with cable on page 31 Remove the WLAN card on page 32 Remove the system board on page 33 Remove the speakers on page 35 Remove the thermal pad on page 36 Remove the upper case on page 37 Remove the LCD module on page 38 Step 1 Remove six screws Chapter 4 Removing a FRU or CRU 41 ...

Страница 48: ...5 Remove the hinges Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Hinge Remove the LVDS cable Make sure the following FRU or CRU have been removed Remove the lower case on page 28 42 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 49: ...e LCD module on page 38 Step 1 Remove the LVDS cable Figure 26 Remove the LVDS cable Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part LVDS cable Removal procedure for S340 14 models Remove the lower case Make sure the computer has been shut down before servicing the computer Step 1 Place the computer upside down on a flat surface Step ...

Страница 50: ...28 Pry up the latches and remove the lower case Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Lower case Remove the battery pack Make sure the following FRU or CRU have been removed Remove the lower case on page 43 44 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 51: ...ention Use your fingernail to pull the connector to unplug it Do not pull the cable Step 3 Remove four screws and then remove the battery pack Figure 30 Remove the battery pack Screw specification Number of screws M2 x 4 4 Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Chapter 4 Removing a FRU or CRU 45 ...

Страница 52: ...Remove the lower case on page 43 Remove the battery pack on page 44 Step 1 Disconnect the cable of the I O board from the system board Figure 31 Disconnect the cable of the I O board Step 2 Remove four screws Figure 32 Remove four screws 46 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 53: ...up the Lenovo part numbers of the following replacement part I O board with cable Remove the WLAN card Make sure the following FRU or CRU have been removed Remove the lower case on page 43 Remove the battery pack on page 44 Remove the I O board with cable on page 46 Step 1 Disconnect the antenna cables from the WLAN card Chapter 4 Removing a FRU or CRU 47 ...

Страница 54: ...emove the WLAN card Screw specification Number of screw M2 x 2 5 1 Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part WLAN card Remove the system board Make sure the following FRU or CRU have been removed 48 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 55: ...I O board with cable on page 46 Remove the WLAN card on page 47 Step 1 Disconnect cables connected to the system board Figure 36 Disconnect cables Step 2 Remove ten screws Figure 37 Remove ten screws Screw specification Number of screws M2 x 4 10 Chapter 4 Removing a FRU or CRU 49 ...

Страница 56: ...f the following replacement part System board Remove the speakers Make sure the following FRU or CRU have been removed Remove the lower case on page 43 Remove the battery pack on page 44 Step 1 Disconnect the cable of the speakers from the system board Figure 39 Disconnect the cable 50 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 57: ...ing replacement parts Speakers Remove the thermal pad Make sure the following FRU or CRU have been removed Remove the lower case on page 43 Remove the battery pack on page 44 Remove the I O board with cable on page 46 Remove the WLAN card on page 47 Remove the system board on page 48 Step 1 Carefully remove the thermal pad Chapter 4 Removing a FRU or CRU 51 ...

Страница 58: ...ake sure the following FRU or CRU have been removed Remove the lower case on page 43 Remove the battery pack on page 44 Remove the I O board with cable on page 46 Remove the WLAN card on page 47 Remove the system board on page 48 Remove the speakers on page 50 Remove the thermal pad on page 51 Step 1 Remove six screws 52 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 59: ... case Figure 43 Remove the upper case Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Upper case Remove the LCD module Make sure the following FRU or CRU have been removed Remove the lower case on page 43 Chapter 4 Removing a FRU or CRU 53 ...

Страница 60: ...move the system board on page 48 Remove the speakers on page 50 Remove the thermal pad on page 51 Remove the upper case on page 52 Step 1 Remove the LCD bezel Figure 44 Remove the LCD bezel Step 2 Remove the hinge cover Figure 45 Remove the hinge cover 54 Lenovo Chromebook C340 and S340 Hardware Maintenance Manual ...

Страница 61: ...screws M2 x 2 5 4 Step 4 Remove the LCD panel from the LCD cover and then disconnect the LCD cable Figure 47 Remove the LCD panel Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part LCD module Chapter 4 Removing a FRU or CRU 55 ...

Страница 62: ...e on page 53 Step 1 Disconnect the camera connector and then remove the camera Figure 48 Remove the camera Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Camera Remove the hinges Make sure the following FRU or CRU have been removed Remove the lower case on page 43 Remove the battery pack on page 44 Remove the I O board with cable on ...

Страница 63: ...tep 1 Remove eight screws Figure 49 Remove eight screws Screw specification Number of screws M2 x 2 5 8 Step 2 Remove the hinges Figure 50 Remove the hinges Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement part Chapter 4 Removing a FRU or CRU 57 ...

Страница 64: ...ge 47 Remove the system board on page 48 Remove the speakers on page 50 Remove the thermal pad on page 51 Remove the upper case on page 52 Remove the LCD module on page 53 Step 1 Remove the LVDS cable Figure 51 Remove the LVDS cable Go to https support lenovo com partslookup to look up the Lenovo part numbers of the following replacement parts LVDS cable 58 Lenovo Chromebook C340 and S340 Hardware...

Страница 65: ...Trademarks LENOVO and the LENOVO logo are trademarks of Lenovo All other trademarks are the property of their respective owners 2019 Lenovo ...

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