Samsung SGH-U900 Service Manual

Also see for U900 - SGH Soul Cell Phone: User manual User manual User manual Quick start guide User guide

SAMSUNG Proprietary-Contents may change without noticeSafety Precautions1-2This Document can not be used without Samsung's authorization1-2. ESD(Electrostatically Sensitive Devices) PrecautionSeveral semiconductor may be damaged easilly by static electricity. Such parts are called byESD(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below.You can prevent from ESD damage by static electricity.● Remove static electricity remained your body before you touch semiconductor or parts withsemiconductor. There are ways that you touch an earthed place or wear static electricityprevention string on wrist.● Use earthed soldering steel when you connect or disconnect ESD.● Use soldering removing tool to break static electricity. , otherwise ESD will be damaged bystatic electricity.● Don't unpack until you set up ESD on product. Because most of ESD are packed by boxand aluminum plate to have conductive power,they are prevented from static electricity.● You must maintain electric contact between ESD and place due to be set up until ESD isconnected completely to the proper place or a circuit board.