Compaq 7470 Service Guide - Page 37

Maintenance and Service Guide, REMOVAL & REPLACEMENT PROCEDURES - BEFORE, YOU BEGIN

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Maintenance and Service Guide Compaq Presario 7400 Series Computers MSG index Home Product Description Troubleshooting Removal & Replacement Jumper & Switch Information Illustrated Parts Catalog Specifications REMOVAL SEQUENCE Electrostatic discharge Service considerations Preparation for disassembly Serial number Chassis Power supply Mass storage devices Fax-modem Parallel port assembly PCI bracket System board components Front bezel Instant On button board Creativity Action Center REMOVAL & REPLACEMENT PROCEDURES - BEFORE YOU BEGIN Preparation for Disassembly To prepare the computer for removal and replacement procedures, complete the following steps: 1 Remove any diskettes, compact discs, or Zip disks from the computer. 2 Turn off the computer and any peripheral devices that are connected to the computer. CAUTION: The computer power switch should be turned off before you disconnect any cables. 3 Disconnect the power cord from the electrical outlet, and then from the computer. 4 Disconnect all peripheral device cables from the computer. IMPORTANT: During disassembly, label each cable as you remove it. Be sure to note its position and routing.

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Maintenance and Service Guide
Compaq Presario 7400 Series Computers
MSG index
Product Description
Troubleshooting
Illustrated Parts Catalog
Home
Removal & Replacement
Jumper & Switch Information
Specifications
REMOVAL SEQUENCE
Electrostatic
discharge
Service
considerations
Preparation for
disassembly
Serial number
Chassis
Power supply
Mass storage devices
Fax-modem
Parallel port
assembly
PCI bracket
System board
components
Front bezel
Instant On button
board
Creativity Action
Center
REMOVAL & REPLACEMENT PROCEDURES - BEFORE
YOU BEGIN
Preparation for Disassembly
To prepare the computer for removal and replacement procedures, complete the
following steps:
1
Remove any diskettes, compact discs, or Zip disks from the computer.
2
Turn off the computer and any peripheral devices that are connected to the
computer.
CAUTION:
The computer power switch should
be turned off before you disconnect any cables.
3
Disconnect the power cord from the electrical outlet, and then from the
computer.
4
Disconnect all peripheral device cables from the computer.
IMPORTANT:
During disassembly, label each cable as you remove
it. Be sure to note its position and routing.