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ThinkCore W315/325/W345 Hardware User’s Manual Hardware Introduction
2-6
LED Indicators
Note that the W315 does not have an SD slot, so it does not have an SD LED.
LED Name LED Color LED Function
Green
Power is on and functioning normally
Ready
Off
Power is off or a power error exists
Green
SD card is detected
SD
Off
SD card is not detected
ON: GPRS is ready
Green
Blinking: Conflict with GPRS IP or no response
from DHCP server
GPRS
Off
GPRS is not ready or function error exists
Green
Number of glowing LEDs indicates signal strength
5: Excellent
4: Very good
3: Good
2: Fair
1: Bad
Signal Strength
Off
No signal or GPRS connection failed
Orange
10 Mbps Ethernet link
Green
100 Mbps Ethernet link
LAN
Off
Disconnected or short circuit
Green
Serial ports P1-P4 transmitting data
TxD
P1-P4
Off
Serial ports P1-P4 not transmitting data
Yellow
Serial ports P1-P4 receiving data
RxD
P1-P4
Off
Serial ports P1-P4 not receiving data
Reset Button
Hold in the reset button for 5 seconds to load the factory default configuration. After loading the
factory defaults, the system will reboot automatically. We recommend that you use this function
only if the software is not working properly. To reset the Linux system software, always use the
software reboot command (“reboot”) to protect the integrity of your data.
The reset button is NOT designed as a hard reboot for the embedded computer.
ATTENTION
Restoring default settings preserves your data
Resetting the embedded computer to factory defaults will NOT format the user directory and will
NOT erase the user’s data. The reset button only loads a configuration file. All files in the /etc
directory will revert to their factory defaults, but all other user data will remain intact in the Flash
ROM.
Please note that if there is a problem with the /etc directory, the embedded computer may be
unable to restore the factory default settings.