Dell 3400 specifications Diagnostics

Page 17

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Diagnostics

Dell™ Vostro™ 3400 Service Manual

Device Status Lights

Battery Status Lights

Battery Charge and Health

Keyboard Status Lights

LED Error Codes

Device Status Lights

Turns on when you turn on the computer and blinks when the computer is in a power management mode.

Turns on when the computer reads or writes data.

Turns on steadily or blinks to indicate battery charge status.

Turns on when wireless networking is enabled.

Turns on when a card with Bluetooth® wireless technology is enabled. To turn off only the Bluetooth wireless technology function, right-click the icon in the system tray and select Disable Bluetooth Radio.

Battery Status Lights

If the computer is connected to an electrical outlet, the battery light operates as follows:

Alternately blinking amber light and blue light — An unauthenticated or unsupported non-Dell AC adapter is attached to your laptop.

Alternately blinking amber light with steady blue 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.

Blue light on — Battery in charge mode with AC adapter present.

Battery Charge and Health

To check the battery charge, press and release the status button on the battery charge gauge to illuminate the charge-level lights. Each light represents approximately 20 percent of the total battery charge. For example, if four lights are on, the battery has 80 percent of its charge remaining. If no lights appear, the battery has no charge.

To check battery health using the charge gauge, press and hold the status button on the battery charge gauge for at least 3 seconds. If no lights appear, the battery is in good condition and more than 80 percent of its original charge capacity remains. Each light represents incremental degradation. If five lights appear, less than 60 percent of the charge capacity remains, and you should consider replacing the battery.

Keyboard Status Lights

The green lights located above the keyboard indicate the following:

Turns on when the numeric keypad is enabled.

Turns on when the Caps Lock function is enabled.

Turns on when the Scroll Lock function is enabled.

LED Error Codes

The following table shows the possible LED codes that may display when your computer is unable to complete a power on self test.

Appearance

ON-FLASH-FLASH

FLASH-ON-ON

Description

No SODIMMs are installed

System board error

Next Step

1.Install supported memory modules.

2.If memory is already present, reseat the module(s) one at a time in each slot.

3.Try known good memory from another computer or replace the memory.

4.Replace the system board.

1.Reseat the processor.

2.Replace the system board.

3.Replace the processor.

Image 17
Contents Page Removing the Audio Board Audio BoardPage Page Replacing the Audio Board Removing the Base Cover Base CoverReplacing the Base Cover Removing the Battery BatteryReplacing the Battery Entering System Setup System SetupSystem Setup Screens System Setup OptionsMain Boot Replacing the Bluetooth Card Bluetooth CardRemoving the Bluetooth Card Removing the Camera CameraReplacing the Camera Replacing the Coin-Cell Battery Coin-Cell BatteryRemoving the Coin-Cell Battery Diagnostics Back to Contents Removing the Display Assembly Display AssemblyPage Page Page Replacing the Display Assembly Removing the ExpressCard Cage ExpressCard CagePage Replacing the ExpressCard Cage Removing the ExpressCard ExpressCardReplacing the ExpressCard Removing the Hard Drive Hard DrivePage Replacing the Hard Drive Page Removing the Heat Sink and Fan Assembly Heat Sink and Fan AssemblyReplacing the Heat Sink and Fan Assembly Removing the IO Board IO BoardReplacing the IO Board Removing the Keyboard KeyboardPage Replacing the Keyboard Removing the Display Bezel Display BezelReplacing the Display Bezel Removing the Display Hinges Display HingesReplacing the Display Hinges Removing the Display Panel Display PanelPage Replacing the Display Panel Removing the Memory Modules MemoryReplacing the Memory Modules Removing the Memory Card Memory CardReplacing the Memory Card Removing the Optical Drive Optical DriveReplacing the Optical Drive Removing the Palm Rest Palm RestPage Page Page Page Page Replacing the Palm Rest Removing and Replacing Parts Removing the Processor ProcessorReplacing the Processor Removing the Power-Button Board Power-Button BoardPage Replacing the Power-Button Board Removing the SIM Card Subscriber Identity Module SIM CardReplacing the SIM Card Removing the Speakers SpeakersPage Page Replacing the Speakers Processor SpecificationsExpressCard AC Adapter Back to Contents Removing the System Board System BoardReplacing the System Board Removing the Wlan Card Wireless Local Area Network Wlan CardReplacing the Wlan Card Turning Off Your Computer Working on Your ComputerBefore Working Inside Your Computer Windows Vista After Working Inside Your ComputerRemoving the Wwan Card Wireless Wide Area Network Wwan CardReplacing the Wwan Card