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Maintenance and Service Guide
Compaq Presario 5400 Series Computers - 5446, 5452, 5456, 5471, 5473, 5474, 5475, 5476, 5477

MSG index Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications

Clearing CMOS
Power-On Self Test (POST)
Configuration
Diagnostic error codes
Troubleshooting without diagnostics
TROUBLESHOOTING

Clearing CMOS

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CMOS jumper location

1 Complete the preparation for disassembly.
2 Remove the chassis.
3 Remove the fax/modem board.
4 Open the system board bracket.
5 To clear CMOS the jumper bub1.gif (838 bytes) (JP4) should be placed on pins 1-2 for ten (10) seconds. To return to normal operation, place the jumper on pins 2-3.
6

Replace the system board bracket and perform the desired troubleshooting.

 

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