Dell Vostro 5390 Service Manual

Also see for P114G: Setup and specifications Service manual Setup and specifications Service manual Setup and specifications guide

TroubleshootingTopics:• Handling swollen Lithium-ion batteries• Dell SupportAssist Pre-boot System Performance Check diagnostics• Built-in self-test (BIST)• System-diagnostic lights• Real-Time Clock (RTC Reset)• Recovering the operating system• Backup media and recovery options• WiFi power cycle• Drain residual flea power (perform hard reset)Handling swollen Lithium-ion batteriesLike most laptops, Dell laptops use lithium-ion batteries. One type of lithium-ion battery is the lithium-ion polymer battery.Lithium-ion polymer batteries have increased in popularity in recent years and have become standard in the electronics industrydue to customer preferences for a slim form factor (especially with newer ultra-thin laptops) and long battery life. Inherent tolithium-ion polymer battery technology is the potential for swelling of the battery cells.Swollen battery may impact the performance of the laptop. To prevent possible further damage to the device enclosure orinternal components leading to malfunction, discontinue the use of the laptop and discharge it by disconnecting the AC adapterand letting the battery drain.Swollen batteries should not be used and should be replaced and disposed of properly. We recommend contacting Dell productsupport for options to replace a swollen battery under the terms of the applicable warranty or service contract, including optionsfor replacement by a Dell authorized service technician.The guidelines for handling and replacing Lithium-ion batteries are as follows:● Exercise caution when handling Lithium-ion batteries.● Discharge the battery before removing it from the system. To discharge the battery, unplug the AC adapter from the systemand operate the system only on battery power. When the system will no longer power on when the power button is pressed,the battery is fully discharged.● Do not crush, drop, mutilate, or penetrate the battery with foreign objects.● Do not expose the battery to high temperatures, or disassemble battery packs and cells.● Do not apply pressure to the surface of the battery.● Do not bend the battery.● Do not use tools of any type to pry on or against the battery.● If a battery gets stuck in a device as a result of swelling, do not try to free it as puncturing, bending, or crushing a batterycan be dangerous.● Do not attempt to reassemble a damaged or swollen battery into a laptop.● Swollen batteries that are covered under warranty should be returned to Dell in an approved shipping container (providedby Dell)—this is to comply with transportation regulations. Swollen batteries that are not covered under warranty should bedisposed of at an approved recycling center. Contact Dell product support at https://www.dell.com/support for assistanceand further instructions.● Using a non-Dell or incompatible battery may increase the risk of fire or explosion. Replace the battery only with acompatible battery purchased from Dell that is designed to work with your Dell computer. Do not use a battery from othercomputers with your computer. Always purchase genuine batteries from https://www.dell.com or otherwise directly fromDell.Lithium-ion batteries can swell for various reasons such as age, number of charge cycles, or exposure to high heat. For moreinformation on how to improve the performance and lifespan of the laptop battery and to minimize the possibility of occurrenceof the issue, see Dell Laptop Battery - Frequently Asked Questions.5Troubleshooting 51