Dell Latitude 5400 Chromebook Latitude 5400 Chrome Service Manual
Dell Latitude 5400 Chromebook Manual
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- Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 1
Dell Latitude 5400 Chrome Service Manual Regulatory Model: P98G Regulatory Type: P98G005 July 2020 Rev. A01 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 2
and tells you how to avoid the problem. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. © 2019 - 2020 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 3
components of your system 5 Chapter 2: Working on your computer 7 Safety instructions...7 Before working inside your computer...7 Safety precautions...8 Electrostatic discharge-ESD protection...8 ESD field service kit ...9 Transporting sensitive components...10 After working inside your computer - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 4
Chapter 4: Troubleshooting...101 Basic troubleshooting...101 Power issues...101 CROSH...105 CROSH commands...105 Chrome commands...107 Commonly used CROSH command...113 Check battery charging status...113 Recovery Chromebook...120 Recovering the Chromebook...120 Reset Chromebook...122 LCD Built-in - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 5
1 Major components of your system This section illustrates the major components of your system and their locations. 1. Base cover 2. DC-in port 3. Heatsink assembly 4. System fan 5. Memory modules 6. System board 7. Battery 8. Inner frame 9. Speakers 10. Solid state drive 11. Touchpad buttons 12. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 6
17. Coin-cell battery NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options. 6 Major - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 7
only perform troubleshooting and simple repairs as authorized in your product documentation, or as directed by the online or telephone service and support team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 8
disassembly instructions. Dell products with standby power must be unplugged before you open the case through the use of a field service electrostatic discharge (ESD) kit. When , such as intermittent problems or a shortened product of damage to recognize and troubleshoot is the intermittent (also - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 9
heat sink casings, away from internal parts that are insulators and often highly charged. • Working Environment - Before deploying the ESD Field Service kit, service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 10
such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static apart for a stable base, and point your toes out. 2. Tighten stomach muscles. Abdominal muscles support your spine when you lift, offsetting the force of the load. 3. Lift with your legs, - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 11
the Dell Latitude 5300 2-in-1 Chrome , for different components. Table 1. Screw Size List Component Screw type Quantity Image Base cover M2.5x6.5 (captive screws) 8 NOTE: Screws are part of the base cover. Battery M2x5 (captive screws) 2 WWAN M2x3 1 WLAN M2x2 1 SSD support - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 12
5x4 4 Touchpad button board M2x3 2 Power adapter port bracket M2x4 2 Memory module frame M2x3 3 System board M2.5x4 2 Keyboard support bracket M2x2 19 Keyboard M2x2 5 Disassembly and reassembly MicroSD card Removing the microSD card Prerequisites 1. Follow the procedure in Before - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 13
Installing the microSD card Steps 1. Align the microSD card to its slot on the computer [1]. 2. Slide the microSD card into the slot until it clicks into place [2]. Removing and installing components 13 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 14
3. Follow the procedures in After working inside your computer. Base cover Removing the base cover Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. Steps 1. Loosen the eight captive screws [1]. 14 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 15
2. Using a plastic scribe [1], pry the base cover from the top-left corner and continue to work on the sides to open the base cover [2]. Removing and installing components 15 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 16
3. Lift and remove the base cover away from the computer. Installing the base cover Steps 1. Align and place the base cover on the computer. 16 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 17
2. Press the edges and sides of the base cover until it snaps into place. Removing and installing components 17 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 18
3. Tighten the eight captive screws to secure the base cover to the computer. 18 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 19
to pry on or against the battery. • Ensure any screws during the servicing of this product are not lost or misplaced, to prevent accidental puncture or damage Dell technical support for assistance. See www.dell.com/contactdell. • Always purchase genuine batteries from www.dell.com or authorized Dell - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 20
3. Loosen the single captive screw that secures the battery to the palmrest [1]. Slide the battery inward and lift the battery away from the palmrest. 20 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 21
Installing the battery Steps 1. Align and slide the battery on the palmrest [1]. 2. Tighten the single captive screw to secure the battery to the palmrest [2]. Removing and installing components 21 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 22
3. Connect the battery cable to the connector on the system board . 22 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 23
Next steps 1. Install the base cover. 2. Install the microSD card. 3. Follow the procedure in After working on your computer. WLAN card Removing the WLAN card Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. Remove the base cover. Steps 1. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 24
WLAN card Installing the WLAN card About this task CAUTION: To avoid damage to the WLAN card, do not place any cables under it. Steps 1. Insert the WLAN card into the connector on the system board [1]. 2. Connect the WLAN antenna cables to the connectors on the WLAN card [2]. 3. Place the WLAN card - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 25
Next steps 1. Install the base cover. 2. Install the microSD card. 3. Follow the procedure in After working on your computer. WWAN card Removing the WWAN card Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. Remove the base cover. 4. Remove - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 26
Installing the WWAN card About this task CAUTION: To avoid damage to the WWAN card, do not place any cables under it. Steps 1. Insert the WWAN card into the connector on the system board [1]. 2. Connect the WWAN antenna cables to the connectors on the WWAN card [2]. 3. Place the WWAN card bracket to - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 27
Next steps 1. Install the battery. 2. Install the base cover. 3. Install the microSD card. 4. Follow the procedure in After working on your computer. Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 28
3. Lift the coin cell battery from the system board [2]. Installing the coin-cell battery Steps 1. Turn the system board and connect the coin cell battery cable to the connector on the system board. 2. Place the coin cell on the system board [1]. 3. Connect the coin cell battery cable to the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 29
Next steps 1. Install the DC-in. 2. Install the memory module. 3. Install the WLAN. 4. Install the WWAN. 5. Install the battery. 6. Install the base cover. 7. Install the microSD card. 8. Follow the procedure in After working on your computer. Memory modules Removing the memory module Prerequisites - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 30
Installing the memory module Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Slide the memory module firmly into the slot at an angle [1]. 3. Press the memory module down until the clips secure it [2]. NOTE: If you do not hear the click, remove the memory - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 31
Next steps 1. Install the battery. 2. Install the base cover. 3. Install the microSD card. 4. Follow the procedure in After working on your computer. DC-in port Removing the DC-in port Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. Remove - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 32
2. Disconnect the DC-in port cable from the connector on the system board and remove the DC-in port from the computer [1, 2]. 32 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 33
Installing the DC-in port Steps 1. Place the DC-in port to its slot on the computer [1]. 2. Connect the DC-in port cable to the connector on the system board [2]. Removing and installing components 33 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 34
3. Place the Type-C bracket on its slot on the computer [1]. 4. Replace the two (M2x4) and (M2x5) screws to secure the Type-C bracket to the palmrest [2]. 34 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 35
. 4. Remove the battery. Steps 1. Remove the two (M2x3) screws that secures the SSD to the palmrest [1]. 2. Slightly turn and remove the SSD support bracket from the M.2 SSD slot [2]. Remove the single (M2x2) screw that secures the M.2 SSD to the palmrest [1]. Removing and installing components 35 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 36
SSD thermal plate Installing the M.2 SSD Steps 1. Place the M.2 SSD into the slot on the palmrest [1]. 2. Align and place the SSD support bracket above the M.2 SSD [2]. 3. Replace the two (M2x3) screws to secure the SSD support bracket to the palmrest [3]. 36 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 37
Next steps 1. Install the battery. 2. Install the base cover. 3. Install the microSD card. 4. Follow the procedure in After working on your computer. Solid state drive bracket Removing the solid state drive bracket Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 38
Installing the solid state drive bracket Steps 1. Align the bracket and insert it into the slot on the palmrest [1]. 2. Replace the single (M2x3) screw to secure the bracket to the palmrest [2]. 38 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 39
Next steps 1. Install the battery. 2. Install the base cover. 3. Install the microSD card. 4. Follow the procedure in After working on your computer. Inner frame Removing the inner frame Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. Remove - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 40
2. Remove the four five (M2x5) screws that secure the inner frame to the system board [1]. 3. Remove the six (M2x3) screws that secure the inner frame to the system chassis [2]. 4. Lift the inner frame away from the system chassis [3]. 40 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 41
Installing the inner frame Steps 1. Align and place the inner frame on the system chassis [1]. 2. Replace the six (M2x3) screws to secure the inner frame to the system chassis [2]. 3. Replace the three (M2x5) screws to secure the inner frame to the system board [3]. Removing and installing - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 42
4. Reroute the WLAN antenna cables. 42 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 43
inner frame 1 Next steps 1. Install the coin cell battery. 2. Install the DC-in. 3. Install the memory module. 4. Install the WLAN. 5. Install the WWAN. 6. Install the battery. 7. Install the base cover. 8. Install the microSD card. 9. Follow the procedure in After working on your computer. Touchpad - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 44
10. Remove the Inner frame. Steps 1. Open the latch and disconnect the touchpad button board cable from the connector on the touchpad board [1] . 2. Peel out the speaker cable tapes securing the touchpad buttons [2]. 3. Remove the two (M2x3) screws that secure the touchpad button bracket to the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 45
Installing the touchpad button board Steps 1. Place the touchpad button board into the slot on the palmrest [1]. 2. Replace the two (M2x3) screws to secure the touchpad button board to the palmrest [2]. Removing and installing components 45 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 46
3. Adhere the speaker cable tapes securing the touchpad buttons [2]. 4. Open the latch and fix the touchpad button board cable to the connector on the touchpad board [1] 46 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 47
Next steps 1. Install the Inner frame. 2. Install the coin cell battery. 3. Install the DC-in. 4. Install the memory module. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working on your - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 48
9. Remove the Coin cell battery. 10. Remove the Inner frame. Steps 1. Disconnect and peel the USH daughter board Flexible Flat Cable (FFC) from the USH daughter board [1, 2]. 2. Disconnect the LED board cable from the connector on the system board. 3. Unroute the LED board cable [2]. 4. Peel the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 49
LED 1 Installing the LED board Steps 1. Place the LED board and align the screw hole on the LED board with the screw hole on the palmrest [1]. 2. Replace the single (M2x2.5) screw to secure the LED board to the palmrest [2]. Remove Removing and installing components 49 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 50
3. Connect the LED board cable to the connector on the system board and route the LED board cable [1] 4. Connect and adhere the USH daughter board Flexible Flat Cable (FFC) from the USH daughter board. 50 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 51
Next steps 1. Install the Inner frame. 2. Install the coin cell battery. 3. Install the DC-in. 4. Install the memory module. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working on your - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 52
9. Remove the Coin cell battery. 10. Remove the Inner frame. Steps 1. Disconnect the speaker cable from the connector on the system board [1]. 2. Peel the adhesive tape that secures the speaker cable to the palmrest [2]. 3. Disconnect the touchpad cable from the connector on the daughter board [3]. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 53
5. Lift and remove the speakers away from the palmrest. Removing and installing components 53 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 54
Installing the speakers Steps 1. Using the alignment posts and rubber grommets, place the speakers in the slots on the palmrest. Speakers 2. Route the speaker cable through the routing guides. Install 54 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 55
3. Affix the adhesive tape to secure speaker cable to the palmrest [1, 2]. 4. Connect the speaker cable to the connector on the system board [3]. Removing and installing components 55 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 56
Speakers 2 Next steps 1. Install the Inner frame. 2. Install the coin cell battery. 3. Install the DC-in. 4. Install the memory module. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 57
9. Remove the Coin cell battery. 10. Remove the Inner frame. Steps 1. Disconnect the system fan cable from the connector on the system board. 2. Remove the four (M2x3) screws that secure the heatsink assembly to the system board [1]. Installing the heatsink assembly Steps 1. Place the heatsink - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 58
Next steps 1. Install the Inner frame. 2. Install the coin cell battery. 3. Install the DC-in. 4. Install the memory module. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working on your - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 59
5. Remove the WWAN. 6. Remove the WLAN. 7. Remove the memory module. 8. Remove the DC-in port. 9. Remove the Coin cell battery. 10. Remove the Inner frame. Steps 1. Disconnect the system fan cable from the connector on the system board. 2. Remove the two (M2x5) screws that secure the system fan to - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 60
Installing the system fan Steps 1. Place and align the screw holes on the system fan with the screw holes on to the palmrest [1]. 2. Replace the two (M2x5) screws to secure the system fan to the palmrest [2]. 60 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 61
3. Connect the system fan cable to the connector on the system board. Removing and installing components 61 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 62
Next steps 1. Install the Inner frame. 2. Install the coin cell battery. 3. Install the DC-in. 4. Install the memory module. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working on your - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 63
9. Remove the Coin cell battery. 10. Remove the Inner frame. 11. Remove the heatsink. 12. Remove the system fan. Steps 1. Peel the adhesive tape and disconnect the touch screen cable from the connector on the system board [1]. 2. Remove the single (M2x4) screw that secures the eDP cable bracket to - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 64
9. Remove the two (M2.5x4) screws that secures the system board to the palmrest [1]. 64 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 65
Installing the system board Steps 1. Align and place the system board to the palmrest [1]. 2. Replace the two (M2.5x4) screws to secure the system board to the palmrest [2]. Removing and installing components 65 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 66
3. Connect the following cables: a. Speaker cable [2]. b. LED board cable [1]. c. touchpad cable [3]. 66 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 67
4. Connect the eDP cable to the connector on the system board and adhere the adhesive tape [1]. 5. Replace the eDP cable bracket on the eDP cable connector on the system board [2]. 6. Replace the single (M2x4) screw that secures the eDP cable bracket to the system board [3, 4]. Removing and - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 68
Next steps 1. Install the System fan. 2. Install the Heatsink. 3. Install the Inner frame. 4. Install the coin cell battery. 5. Install the DC-in. 6. Install the memory module. 7. Install the WLAN. 8. Install the WWAN. 9. Install the battery. 10. Install the base cover. 11. Install the microSD card. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 69
3. Remove the base cover. 4. Remove the battery. 5. Remove the WWAN. 6. Remove the WLAN. 7. Remove the memory module. 8. Remove the DC-in port. 9. Remove the Coin cell battery. Steps 1. Lift the latch and disconnect the backlit cable and the keyboard cable from the connectors on the touchpad. 2. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 70
Installing the keyboard Steps 1. Align and place the keyboard on the palmrest [1]. 2. Replace the 18 (M2x2.5) screws to secure the keyboard to the palmrest [2]. 70 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 71
3. Connect the backlit cable and the keyboard cable to the connectors on the touchpad. Removing and installing components 71 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 72
4. Adhere the adhesive tape securing the keyboard and the smartcard board. Next steps 1. Install the coin cell battery. 2. Install the DC-in. 3. Install the memory module. 4. Install the WLAN. 5. Install the WWAN. 6. Install the battery. 7. Install the base cover. 8. Install the microSD card. 9. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 73
9. Remove the Coin cell battery. 10. Remove the Inner frame. 11. Remove the heatsink. 12. Remove the system fan. 13. Remove the speaker. 14. Remove the LED board. 15. Remove the system board. 16. Remove the keyboard. Steps 1. Remove the six (M2x2) screws that secure the keyboard to the keyboard - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 74
12. Remove the system fan. 13. Remove the speaker. 14. Remove the LED board. 15. Remove the system board. 16. Remove the keyboard. Steps 1. Remove the two (M2x3) screws that secure the power button with the fingerprint reader on the palmrest [1]. 2. Lift the power button with fingerprint reader - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 75
Next steps 1. Install the keyboard. 2. Install the system board. 3. Install the LED board. 4. Install the speaker. 5. Install the System fan. 6. Install the Heatsink. 7. Install the Inner frame. 8. Install the coin cell battery. 9. Install the DC-in. 10. Install the memory module. 11. Install the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 76
3. Remove the base cover. 4. Remove the battery. Steps 1. Peel the adhesive tape and disconnect the cable from the connector on the system board [1]. 2. Remove the two (M2x4) screws that secures the eDP cable bracket to the system board [2]. 3. Lift the eDP cable bracket from the system board [3]. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 77
6. Remove the four (M2.5x4) screws that secure the display assembly to the system chassis [1]. 7. Remove the display assembly from the system [2]. Removing and installing components 77 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 78
Installing the display assembly About this task NOTE: Ensure that the hinges are opened to the maximum before replacing the display assembly on the palmrest and keyboard assembly. Steps 1. Align and place the system chassis under the hinges of the display assembly [1]. 2. Replace the four (M2.5x3) - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 79
3. Seat the system chassis on the display assembly. Removing and installing components 79 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 80
4. Connect the cable to the connector on the system board and adhere the adhesive tape [1]. 5. Reroute the eDP cable and connect it to the eDP connector [2]. 6. Place the eDP cable bracket on the system board [3]. 7. Replace the two (M2x4) screws that secures the eDP cable bracket to the system - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 81
Next steps 1. Install the battery. 2. Install the base cover. 3. Install the microSD card. 4. Follow the procedure in After working on your computer. Display bezel Removing display bezel Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 82
Use a plastic scribe to carefully pry open the recesses near the left and right hinges on the bottom edge of the display bezel [1]. When prying open the display bezel, ensure to pry along the outside edge of the display bezel using your hands or plastic scribes-using a screw driver or other sharp - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 83
Installing the display bezel Steps Align the display bezel with the display assembly, and then gently snap the display bezel into place. Removing and installing components 83 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 84
84 Removing and installing components - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 85
Next steps 1. Install the display assembly. 2. Install the battery. 3. Install the base cover. 4. Install the microSD card. 5. Follow the procedure in After working on your computer. Display panel Removing display panel Prerequisites 1. Follow the procedure in before working with your computer. 2. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 86
2. Peel the conductive tape [1] on the display cable connector. 3. Remove the adhesive strip that secures the display cable connector [2] 4. Lift the latch and disconnect the display cable from the connector on the display panel. Do not pull and release the Stretch (SR) Tapes from the display panel. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 87
Removing and installing components 87 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 88
Installing display panel Steps 1. Connect the display cable to the connector and close the latch [1, 2]. 2. Adhere the adhesive strip to secure the display cable connector [3, 4]. 3. Adhere the conductive tape to secure the display cable connector . LCD Panel comes with two (L+R) brackets that - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 89
Next steps 1. Install the Display hinges. 2. Install the display assembly. 3. Install the battery. 4. Install the base cover. 5. Install the microSD card. 6. Install the WLAN. 7. Install the WWAN. 8. Install the Inner frame. 9. Follow the procedure in After working on your computer. Camera Removing - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 90
7. Remove the Inner frame. 8. Remove the Display hinge 9. Remove the display assembly. Steps 1. Peel the two conductive tape that secures the camera in place [1] 2. Carefully pry and lift the camera module from the display back cover [2]. 3. Disconnect the camera cable from the connector on the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 91
2. Insert the camera into the slot on the display back cover . 3. Affix the two conductive tape above the camera [2]. Next steps 1. Install the display assembly. 2. Install the WLAN. 3. Install the WWAN. 4. Install the battery. 5. Install the base cover. 6. Install the Inner frame. 7. Install the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 92
6. Remove the WLAN. 7. Remove the display assembly. 8. Remove the Display panel Steps 1. Remove the two (M2x3) screws that secure the hinge caps to the chassis [1]. 2. Pinch the hinge caps to release the hinge caps from the ribs on the display back cover then slide inwards to remove the hinge caps - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 93
Next steps 1. Replace the Display panel 2. Install the display assembly. 3. Install the WLAN. 4. Install the WWAN. 5. Install the battery. 6. Install the base cover. 7. Install the microSD card. 8. Follow the procedure in After working on your computer. Display hinges Removing display hinge - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 94
8. Remove the Display panel. Steps 1. Remove the four (M2.5x3) screws that secure the display hinge to the display assembly [1]. 2. Remove the display hinges from the display back cover [2]. Installing display hinge Steps 1. Place the display hinge on the display assembly. 2. Replace the four (M2. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 95
a. Install the Display panel. b. Install the Dsiplay assembly. c. Install the WLAN. d. Install the WWAN. e. Install the battery. f. Install the base cover. g. Install the microSD card. h. Follow the procedure in After working on your computer. Display (eDP) cable Removing display cable Prerequisites - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 96
10. Remove the Display panel 11. Remove the Camera Steps Peel the conductive tape and unroute the display cable to release it from adhesive and lift the display cable from the display back cover. Installing display cable Steps 1. Adhere the display cable to the display back cover. 2. Adhere the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 97
Next steps 1. Install the Camera. 2. Install the Display panel 3. Install the Display hinge 4. Install the display assembly. 5. Install the WLAN. 6. Install the WWAN. 7. Install the battery. 8. Install the base cover. 9. Install the microSD card. 10. Follow the procedure in After working on your - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 98
11. Remove the heatsink. 12. Remove the system fan. 13. Remove the speaker. 14. Remove the LED board. 15. Remove the system board. 16. Remove the keyboard. 17. Remove the power button. 18. Remove the display assembly. 19. Remove theDisplay hinges. 20. Remove the Display panel. 21. Remove the Camera - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 99
14. Install the microSD card. 15. Follow the procedure in After working on your computer. Palmrest assembly Replacing the palmrest assembly Prerequisites 1. Follow the procedure in before working with your computer. 2. Remove the microSD card. 3. Remove the base cover. 4. Remove the battery. 5. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 100
Next steps 1. Install the touchpad button board. 2. Install the display assembly. 3. Install the power button. 4. Install the keyboard. 5. Install the system board. 6. Install the LED board. 7. Install the speaker. 8. Install the System fan. 9. Install the Heatsink. 10. Install the Inner frame. 11. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 101
This page contains all the information for Dell Latitude 5400 Chrome basic troubleshooting NOTE: Refer to https://support.google.com/chrome/a/?hl=en#topic=4386908 for the online troubleshooter. NOTE: Resetting the Chromebook, also known as Powerwash, can be attempted before Recovering - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 102
on with the battery power only. Display issue Table 3. Display issue Issue Screen is Blank Display issue Possible solutions If the Chromebook's screen is blank, try the following troubleshooting steps to resolve the issue, checking to see if the screen turns on after each step: 1. Make sure the - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 103
supported by the Chromebook. 2. Try disabling and re-enabling Bluetooth connectivity from the status area in the lower-right corner. 3. Try restarting the Chromebook volume or brightness keys) are not responding, try the following troubleshooting steps, making sure to test the keys after each one: - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 104
error message Chrome OS issues If the Chromebook becomes slow or unresponsive, and the OS is missing or damaged If the Chromebook does not start and displays the message See performing Recover Chromebook for more information. Chromebook: 1. Check if this is a managed device (Enterprise enrolled - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 105
5. Click Continue and follow the on-screen instructions to reset the password. Other Chromebook lock up or freeze symptoms that are not listed here If none of the above symptoms match the Chromebook's issue, refer to Google Help Center for the online troubleshooter and more help. CROSH This topic - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 106
shares the downloaded updates with them. Run this command without arguments to see the current state. rlz < status | enable | disable> Enables or disables RLZ. 106 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 107
on your system. Only available on non-stable channels and non-enterprise enrolled devices. Please note that this will power wash your device. test. Logs a message to system log. Allows the user to manually adjust advanced touchpad settings. Traces the path/route to a network : Troubleshooting 107 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 108
Dell supports View running processes and memory utilization Shows conflicts of all modules loaded by Chrome Allows troubleshooting was enabled Detailed memory usage for apps/ extensions, especially handy for 2 GB Chromebooks Following are the 12 most helpful chrome:// commands that you should know: - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 109
. 3. chrome://downloads: This is also available from the Menu > Downloads. Shortcut key is Ctrl+J. 4. chrome://extensions: This is also available from the Menu > Tools > Extensions. Troubleshooting 109 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 110
by the Google Chrome browser. This also displays all the process related to browser with their PID, process name, and the memory it takes. 110 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 111
gives information about the disk space quote used by the browser, including the breakdown of how much space the individual websites took under temporary files. Troubleshooting 111 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 112
related settings. 12. chrome://sync-internals: This gives information about the Chrome sync feature, including the Sync URL used by Google, and sync statistics. 112 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 113
information about the most commonly used CROSH commands to diagnose the Dell . Below are some of the most commonly used CROSH commands to troubleshoot a hardware issue. NOTE: CROSH storage_test_1 and storage_test_2 are not supported on the eMMC storage device. Check battery charging status The - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 114
. Check battery health Follow the steps to evaluate the health of the Chromebook battery, and check the discharge rate: 1. Disconnect the AC adapter from the Chromebook. 2. Turn on and sign in to Chromebook. 3. Open the Chrome browser. 4. Press CTRL + ALT + T to open CROSH. 114 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 115
test results show that Battery is Unknown, the battery might need to be replaced. Checking memory Follow the steps below to perform a memory check for Chromebook: NOTE: This will approximately take 20 minutes to complete the test, and it also depends on the capacity of the memory. 1. Turn on and - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 116
3. Press CTRL + ALT + T to open CROSH. 4. Type memory_test into CROSH, and then press Enter. 116 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 117
test failure. Checking network status If you are having trouble connecting to the Internet, use the steps in one or more of the following sections to test the network adapter: Follow the instruction to gather the information about the network and diagnose the network errors. Troubleshooting 117 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 118
1. Turn on and sign in to Chromebook. 2. Open the Chrome browser. 3. Press CTRL + ALT + T to open CROSH. 4. Type network_diag into CROSH, and then press Enter. 118 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 119
5. Wait while CROSH performs a set of network diagnostic tests. A diagnostic screen displays the results of the network adapter health test. 6. The diagnostic test log is saved as a.txt (plain text) file in the Files app. Troubleshooting 119 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 120
information about recovering Dell Latitude 5400 Chrome. Recovering the Chromebook Install a new version of the Chrome operating system on your Chromebook by going through the recovery process. You may want to go through this process if you are having problems updating your Chromebook or if it - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 121
USB port or SD card slot on your Chrome device 3. Wait for the Chromebook to boot up from the flash drive 4. Follow the instructions that appear on the screen. 5. On successful installation of the Chrome operating instead, you'll see a screen asking to recover your device. Troubleshooting 121 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 122
instructions exactly as specified in Step 2: Create the recovery USB flash drive or SD card above. 2. Try using a different USB stick or SD card. 3. If the problem persists, contact Google Chrome support . Reset Chromebook This page contains all information about resetting Dell Latitude 5400 Chrome. - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 123
2. Click Settings as highlighted from the picture below. 3. Click Show advanced settings to expand the menu. Troubleshooting 123 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 124
4. Click the Powerwash button. 5. Click Restart when prompted. 124 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 125
Reset.) 6. After you restart the Chrome OS, you should now see the setup screen. Click on Powerwash button. 7. Confirm powerwash by clicking on Continue button. Troubleshooting 125 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 126
the screen abnormality you are experiencing is an inherent problem with the LCD (screen) of the Dell laptop or with the video card (GPU) and PC BIST). How to invoke LCD BIST Test 1. Power off the Dell laptop. 2. Disconnect any peripherals that are connected to the laptop. Connect only the AC adapter ( - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 127
. 7. Press Esc key to exit. NOTE: Dell SupportAssist Pre-boot diagnostics upon launch, initiates an problem persists, replace the system board. For diagnostics pattern 2-amber, 8-white connect an external monitor to isolate between system board or graphics controller failure. Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 128
built in troubleshooting features to diagnose the Dell Latitude 5400 Chrome systems. It also lists the invoking instructions along with tests are completed successfully • View error messages that inform you of problems encountered during testing NOTE: The Enhanced Pre-boot System Assessment window - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 129
pixels on the screen • Dead Pixels: Black dot • Bright Pixels: Bright dot Confirm the LCD functionality by pressing Yes or No on the next screen. Troubleshooting 129 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 130
on touchscreen systems or clicking the next page button on the lower right hand side of the basic screen. Figure 1. System Health Figure 2. Configuration 130 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 131
the device from the left pane and click Run Tests or use Advanced Option to include or exclude any Test. ePSA Error Messages When the Dell ePSA Diagnostic detects an error while running, it will pause the test and then popup a window as shown below - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 132
last test. Capture the error code with Validation code or Scan QR code and Contact Dell NOTE: As part of the new feature, user can now mute the beeping sound code or PSA Error Codes Validation Tool Usage Guide Steps 1. User to obtain information from SupportAssist error windows. 132 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 133
2. Navigate to https://www.dell.com/support/diagnose/Pre-boot-Analysis. 3. Enter error code, validation code, and service tag. Part serial number is optional. NOTE: For error code, use only the last 3 or 4 digits of the code. (user can enter 0142 or 142 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 134
Results Valid Error Code Example After entering the correct information, the online tools will direct the user to the above screen which contains information on : 134 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 135
Suggested Part Replacement • If customer is still covered under Dell Warranty • Case reference number if there is an open case under the service tag Invalid Error Code Example QR APP Validation Tool About this code scanner application through the smartphone to scan the QR code. Troubleshooting 135 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 136
3. The QR code scanner application will scan the code and automatically generate a link. Click the link to proceed. 136 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 137
take the customer to the Dell Support website which contains information on: • Confirmation of the error code and result outcome • Suggested Part Replacement • If customer is still covered under Dell Warranty • Case reference number if there is an open case under the service tag Troubleshooting 137 - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 138
138 Troubleshooting - Dell Latitude 5400 Chromebook | Latitude 5400 Chrome Service Manual - Page 139
Self-help resources Information about Dell products and services Resource location https://www.dell.com Online help for operating system https://www.dell.com/support/article/sln293900 Troubleshooting information, user manuals, setup instructions, product specifications, technical help blogs
Dell Latitude 5400 Chrome
Service Manual
Regulatory Model: P98G
Regulatory Type: P98G005
July 2020
Rev. A01