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Dell Latitude 7230 Rugged Extreme Tablet Service Manual - Page 76

Display assembly, Removing the display-panel assembly

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7. Install the USB-port assembly, Mini-serial RS232 port assembly, RJ45-port assembly, or blank top-cover. 8. Install the USB/HDMI port. 9. Install the I/O daughter-board. 10. Install the WWAN card (for models shipped WWAN card). 11. Install the wireless card. 12. Install the M.2 2230 solid-state drive. 13. Install the back-cover assembly. 14. Install the SIM card (for models shipped with WWAN antennas). 15. Install the batteries. 16. Install the handle (for the models shipped with a handle). 17. Install the stylus. 18. Follow the procedure in after working inside your tablet. Display assembly Removing the display-panel assembly Prerequisites 1. Follow the procedure in before working inside your tablet. 2. Remove the stylus. 3. Remove the handle (for the models shipped with a handle). 4. Remove the batteries. 5. Remove the SIM card (for models shipped with WWAN antennas). 6. Remove the back-cover assembly. 7. Remove the M.2 2230 solid-state drive. 8. Remove the wireless card. 9. Remove the WWAN card (for models shipped WWAN card). 10. Remove the I/O daughter-board. 11. Remove the USB/HDMI port. 12. Remove the USB-port assembly, Mini-serial RS232 port assembly, RJ45-port assembly, or blank top-cover. 13. Remove the USB daughter-board, Mini-serial RS232 daughter-board, RJ45 daughter-board, and decoder daughter-board. 14. Remove the world-facing camera. 15. Remove the heat sink. 16. Remove the scanner assembly. 17. Remove the front camera and microphone assembly. 18. Remove the fan with SSD heat-sink assembly. 19. Remove the system board. About this task The figure indicates the location of the display-panel assembly and provides a visual representation of the removal procedure. 76 Removing and installing components

Section	Page
Latitude 7230 Rugged Extreme Tablet Service Manual	1
Contents	3
Working inside your computer	6
Safety instructions	6
Installation and operating instructions	6
Before working inside your tablet	7
Safety precautions	8
Electrostatic discharge—ESD protection	8
ESD field service kit	9
Transporting sensitive components	10
After working inside your tablet	10
BitLocker	10
Removing and installing components	11
Recommended tools	11
Screw list	11
Major components of Latitude 7230 Rugged Extreme Tablet	13
Batteries	15
Lithium-ion battery precautions	15
Removing the batteries	15
Installing the batteries	16
Subscriber Identification Module (SIM) card	17
Removing the uSIM	17
Inserting the uSIM	18
Stylus	19
Removing the stylus	19
Installing the stylus	20
Handle	21
Removing the handle	21
Installing the handle	22
Back-cover assembly	23
Removing the base-cover assembly	23
Installing the base-cover assembly	26
M.2 solid-state drive	28
Removing the M.2 2230 solid-state drive	28
Installing the M.2 2230 solid-state drive	29
Wireless card	31
Removing the wireless card	31
Installing the wireless card	32
WWAN card	34
Removing the WWAN card	34
Installing the WWAN card	35
I/O daughter-board	38
Removing the I/O daughter-board	38
Installing the I/O daughter-board	39
USB/HDMI port	40
Removing the USB/HDMI port	40
Installing the USB/HDMI port	41
USB-port assembly	43
Removing the USB-port assembly	43
Installing the USB-port assembly	43
Mini-serial RS232 port assembly	44
Removing the Mini-serial RS232 port assembly	44
Installing the Mini-serial RS232 port assembly	44
RJ45-port assembly	45
Removing the RJ45-port assembly	45
Installing the RJ45-port assembly	45
Blank top-cover	46
Removing the blank top-cover	46
Installing the blank top-cover	47
USB daughter-board	48
Removing the USB daughter-board	48
Installing the USB daughter-board	49
Mini-serial RS232 daughter-board	49
Removing the Mini-serial RS232 daughter-board	49
Installing the Mini-serial RS232 daughter-board	49
RJ45 daughter-board	50
Removing the RJ45 daughter-board	50
Installing the RJ45 daughter-board	51
Decoder daughter-board	52
Removing the decoder daughter-board	52
Installing the decoder daughter-board	52
World-facing camera	53
Removing the world-facing camera	53
Installing the world-facing camera	54
Heat sink	56
Removing the heat sink	56
Installing the heat sink	57
Coin-cell battery	59
Removing the coin-cell battery	59
Installing the coin-cell battery	60
USB/HDMI door	61
Removing the USB/HDMI door	61
Installing the USB/HDMI door	62
Scanner assembly	63
Removing the scanner assembly	63
Installing the scanner assembly	64
Front camera and microphone assembly	65
Removing the front camera and microphone assembly	65
Installing the front camera and microphone assembly	66
Fan and SSD heat-sink assembly	67
Removing the fan with SSD heat-sink	67
Installing the fan with SSD heat-sink	68
System board	69
Removing the system board	69
Installing the system board	72
Display assembly	76
Removing the display-panel assembly	76
Installing the display-panel assembly	77
Drivers and downloads	79
BIOS setup	80
Entering BIOS setup program	80
Navigation keys	80
One time boot menu	80
System setup options	81
Updating the BIOS	93
Updating the BIOS in Windows	93
Updating the BIOS using the USB drive in Windows	93
Updating the BIOS from the F12 One-Time boot menu	94
System and setup password	95
Assigning a system setup password	95
Deleting or changing an existing system setup password	95
Clearing CMOS settings	96
Clearing BIOS (System Setup) and System passwords	96
Troubleshooting	97
Handling swollen Lithium-ion batteries	97
Dell SupportAssist Pre-boot System Performance Check diagnostics	97
Running the SupportAssist Pre-Boot System Performance Check	98
Built-in self-test (BIST)	98
M-BIST	98
LCD Power rail test (L-BIST)	99
LCD Built-in Self Test (BIST)	99
System-diagnostic lights	99
Real-Time Clock (RTC Reset)	101
Recovering the operating system	101
Backup media and recovery options	102
WiFi power cycle	102
Drain residual flea power (perform hard reset)	102

Match case Limit results 1 per page

Install the

USB-port assembly

Mini-serial RS232 port assembly

RJ45-port assembly

, or

blank top-cover

Install the

USB/HDMI port

Install the

I/O daughter-board

10.

Install the

WWAN card

(for models shipped WWAN card).

11.

Install the

wireless card

12.

Install the

M.2 2230 solid-state drive

13.

Install the

back-cover assembly

14.

Install the

SIM card

(for models shipped with WWAN antennas).

15.

Install the

batteries

16.

Install the

handle

(for the models shipped with a handle).

17.

Install the

stylus

18.

Follow the procedure in

after working inside your tablet

Display assembly

Removing the display-panel assembly

Prerequisites

Follow the procedure in

before working inside your tablet

Remove the

stylus

Remove the

handle

(for the models shipped with a handle).

Remove the

batteries

Remove the

SIM card

(for models shipped with WWAN antennas).

Remove the

back-cover assembly

Remove the

M.2 2230 solid-state drive

Remove the

wireless card

Remove the

WWAN card

(for models shipped WWAN card).

10.

Remove the

I/O daughter-board

11.

Remove the

USB/HDMI port

12.

Remove the

USB-port assembly

Mini-serial RS232 port assembly

RJ45-port assembly

, or

blank top-cover

13.

Remove the

USB daughter-board

Mini-serial RS232 daughter-board

RJ45 daughter-board

, and

decoder daughter-board

14.

Remove the

world-facing camera

15.

Remove the

heat sink

16.

Remove the

scanner assembly

17.

Remove the

front camera and microphone assembly

18.

Remove the

fan with SSD heat-sink assembly

19.

Remove the

system board

About this task

The figure indicates the location of the display-panel assembly and provides a visual representation of the removal procedure.

Removing and installing components