NEC POWERMATE ENTERPRISE NETPC Service Manual page 10

vi Contents
Section 4 Maintenance and Troubleshooting
Online Services ............................................................................................................ 4-2
NECCSD FaxFlash Service................................................................................... 4-2
NECCSD Bulletin Board System .......................................................................... 4-3
E-Mail/Fax Technical Support Services................................................................. 4-4
Internet ................................................................................................................. 4-5
Maintenance ................................................................................................................ 4-6
System Cleaning.................................................................................................... 4-6
Keyboard Cleaning................................................................................................ 4-7
Mouse Cleaning .................................................................................................... 4-8
Troubleshooting........................................................................................................... 4-9
Diagnosing and Solving Problems ......................................................................... 4-9
Replacing the CMOS Battery ................................................................................ 4-13
Section 5 Disassembly and Reassembly
Safety Procedures ........................................................................................................ 5-1
Recommended Tools ................................................................................................... 5-3
Removal and Replacement ........................................................................................... 5-3
System Unit Top Cover......................................................................................... 5-4
Removal......................................................................................................... 5-4
Replacement .................................................................................................. 5-5
Front Bezel ........................................................................................................... 5-6
Removal......................................................................................................... 5-6
Replacement .................................................................................................. 5-7
Battery.................................................................................................................. 5-7
EMI Shield ........................................................................................................... 5-8
Removal......................................................................................................... 5-8
Replacement .................................................................................................. 5-9
EMI Clip (Riser Card)........................................................................................... 5-10
Removal......................................................................................................... 5-10
Replacement .................................................................................................. 5-10
Fan ....................................................................................................................... 5-11
Removal......................................................................................................... 5-11
Replacement .................................................................................................. 5-12