Dell Latitude 7230 Rugged Extreme Tablet Service Manual - Page 101

Real-Time Clock (RTC Reset), Recovering the operating system, RJ45 LEDs

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Table 23. System-diagnostic lights (continued) Blinking pattern Amber Green 3 6 3 7 4 1 4 2 Problem description Suggested resolution Flash corruption detected by ● SBIOS. Press power button for over 25 seconds to do RTC reset. If problem persists, replace the system board. ● Disconnect all power source (AC, battery, coin cell) and drain flea power by pressing and holding down power button 3~5 seconds to ensure all power are drained. ● Run "BIOS recovery from USB", and the instructions are in the website Dell support. ● If problem persists, replace the system board. Timeout waiting on ME to reply to HECI message. Replace the system board. Memory DIMM power rail failure CPU Power Cable Connection Issue NOTE: Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Nums-Lock), Power button LED (without Fingerprint reader), and Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance Check diagnostics. RJ45 LEDs The Latitude 7230 Rugged Extreme Tablet RJ45 port has double-LEDs on the either side. ● 10 Mbps-Green ● 100 Mbps-Orange ● 1 Gbps-Green + Orange ● Ethernet activity indicator = Yellow flashing Real-Time Clock (RTC Reset) The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell systems from No POST/No Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models. Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for thirty (30) seconds . The system RTC Reset occurs after you release the power button. Recovering the operating system When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell SupportAssist OS Recovery. Troubleshooting 101

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Table 23. System-diagnostic lights (continued)
Blinking pattern
Problem description
Suggested resolution
Amber
Green
3
6
Flash corruption detected by
SBIOS.
●
Press power button for
over 25 seconds to do
RTC reset. If problem
persists, replace the
system board.
●
Disconnect all power
source (AC, battery, coin
cell) and drain flea power
by pressing and holding
down power button 3~5
seconds to ensure all
power are drained.
●
Run "BIOS recovery from
USB", and the instructions
are in the website
Dell
support
.
●
If problem persists,
replace the system board.
3
7
Timeout waiting on ME to
reply to HECI message.
Replace the system board.
4
1
Memory DIMM power rail
failure
4
2
CPU Power Cable Connection
Issue
NOTE:
Blinking 3-3-3 LEDs on Lock LED (Caps-Lock or Nums-Lock), Power button LED (without Fingerprint reader), and
Diagnostic LED indicates failure to provide input during LCD panel test on Dell SupportAssist Pre-boot System Performance
Check diagnostics.
RJ45 LEDs
The Latitude 7230 Rugged Extreme Tablet RJ45 port has double-LEDs on the either side.
●
10 Mbps—Green
●
100 Mbps—Orange
●
1 Gbps—Green + Orange
●
Ethernet activity indicator = Yellow flashing
Real-Time Clock (RTC Reset)
The Real Time Clock (RTC) reset function allows you or the service technician to recover Dell systems from No POST/No
Power/No Boot situations. The legacy jumper enabled RTC reset has been retired on these models.
Start the RTC reset with the system powered off and connected to AC power. Press and hold the power button for
thirty (30) seconds
. The system RTC Reset occurs after you release the power button.
Recovering the operating system
When your computer is unable to boot to the operating system even after repeated attempts, it automatically starts Dell
SupportAssist OS Recovery.
Troubleshooting
101