Dell Vostro 3300, Руководство по обслуживанию

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Diagnostics
This chapter details the built in troubleshooting features to diagnose the Dell systems. It also lists the invoking instructions along with
related information for each diagnostics method.
Topics:
• Battery Status Lights
• WiFi power cycle
• Diagnostic LEDs
• M-BIST
• Self-Heal
• BIOS recovery
• LCD Built-in Self Test
• ePSA Diagnostics
Battery Status Lights
If the computer is connected to an electrical outlet, the battery light operates as follows:
Alternately
blinking amber
light and green
light An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.
Alternately
blinking amber
light with steady
green light Temporary battery failure with AC adapter present.
Constantly
blinking amber
light Fatal battery failure with AC adapter present.
Light off Battery in full charge mode with AC adapter present.
green light on Battery in charge mode with AC adapter present.
WiFi power cycle
If your computer is unable to access the Internet due to WiFi connectivity issues, a WiFi power cycle procedure may be performed. The
following procedure provides the instructions on how to conduct a WiFi 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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94 Diagnostics