Dell Alienware 15 R4 Service Manual - Page 86

Wi-Fi power cycle, System board: BIOS or ROM Read-Only Memory failure

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Table 14. Diagnostics Diagnostic light codes 2,1 2,2 2,3 2,4 2,5 2,6 2,7 3,1 3,2 3,3 3,4 3,5 3,6 3,7 Problem description Processor failure System board: BIOS or ROM (Read-Only Memory) failure No memory or RAM (Random-Access Memory) detected Memory or RAM (Random-Access Memory) failure Invalid memory installed System-board or chipset error Display failure Coin-cell battery failure PCI, video card/chip failure Recovery image not found Recovery image found but invalid Power-rail failure System BIOS Flash incomplete Management Engine (ME) error Camera status light: Indicates whether the camera is in use. • Solid white - Camera is in use. • Off - Camera is not in use. Caps Lock status light: Indicates whether Caps Lock is enabled or disabled. • Solid white - Caps Lock enabled. • Off - Caps Lock disabled. Network port light: Indicates network connectivity. • Off - No network connection. • Solid green - 10 Mbps connection. • Solid orange - 100 Mbps connection. • Solid yellow - 1000 Mbps connection. • Flicker yellow - Network activity. Wi-Fi power cycle If your computer is unable to access the Internet due to Wi-Fi connectivity issues a Wi-Fi power cycle procedure may be performed. The following procedure provides the instructions on how to conduct a Wi-Fi power cycle: NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device. 1 Turn off your computer. 2 Turn off the modem. 3 Turn off the wireless router. 4 Wait for 30 seconds. 5 Turn on the wireless router. 6 Turn on the modem. 7 Turn on your computer. 86

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Table 14. Diagnostics
Diagnostic light codes
Problem description
2,1
Processor failure
2,2
System board: BIOS or ROM (Read-Only Memory) failure
2,3
No memory or RAM (Random-Access Memory) detected
2,4
Memory or RAM (Random-Access Memory) failure
2,5
Invalid memory installed
2,6
System-board or chipset error
2,7
Display failure
3,1
Coin-cell battery failure
3,2
PCI, video card/chip failure
3,3
Recovery image not found
3,4
Recovery image found but invalid
3,5
Power-rail failure
3,6
System BIOS Flash incomplete
3,7
Management Engine (ME) error
Camera status light:
Indicates whether the camera is in use.
•
Solid white – Camera is in use.
•
Off – Camera is not in use.
Caps Lock status light:
Indicates whether Caps Lock is enabled or disabled.
•
Solid white – Caps Lock enabled.
•
Off – Caps Lock disabled.
Network port light:
Indicates network connectivity.
•
Off – No network connection.
•
Solid green – 10 Mbps connection.
•
Solid orange – 100 Mbps connection.
•
Solid yellow – 1000 Mbps connection.
•
Flicker yellow – Network activity.
Wi-Fi power cycle
If your computer is unable to access the Internet due to Wi-Fi connectivity issues a Wi-Fi power cycle procedure may be
performed. The following procedure provides the instructions on how to conduct a Wi-Fi power cycle:
NOTE: Some ISPs (Internet Service Providers) provide a modem/router combo device.
1
Turn off your computer.
2
Turn off the modem.
3
Turn off the wireless router.
4
Wait for 30 seconds.
5
Turn on the wireless router.
6
Turn on the modem.
7
Turn on your computer.
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