TravelMate 4320/4720 and Extensa 4220/4620 Service Guide
Page 8
Chapter 3 Machine Disassembly and Replacement 47 Disassembly Requirements 47 General Information 48 Pre-disassembly ... Cover 53 Removing the DIMM 53 Removing the WLAN Board Modules 54 Removing the Hard Disk Drive Module 55 Removing the Optical Drive Module 57 Main Unit Disassembly Process 59 Main Unit Disassembly Flowchart 59 Removing the...Antennas 90 Removing the Microphone 91 Chapter 4 Troubleshooting 93 System Check Procedures 94 External CD/DVD-ROM Drive Check 94 Keyboard or Auxiliary Input Device Check 94 Memory Check 94 Power System Check 95 Touchpad Check...
Chapter 3 Machine Disassembly and Replacement 47 Disassembly Requirements 47 General Information 48 Pre-disassembly ... Cover 53 Removing the DIMM 53 Removing the WLAN Board Modules 54 Removing the Hard Disk Drive Module 55 Removing the Optical Drive Module 57 Main Unit Disassembly Process 59 Main Unit Disassembly Flowchart 59 Removing the...Antennas 90 Removing the Microphone 91 Chapter 4 Troubleshooting 93 System Check Procedures 94 External CD/DVD-ROM Drive Check 94 Keyboard or Auxiliary Input Device Check 94 Memory Check 94 Power System Check 95 Touchpad Check...
TravelMate 4320/4720 and Extensa 4220/4620 Service Guide
Page 119
Visually check them for damage. If the problem persists, replace the following devices: K Non-Acer devices K Printer, mouse, and other external devices K Battery pack K Hard disc drive K DIMM K CD/DVD-ROM drive K PC cards 4. NOTE: Verify that the power supply being used at the time of the following FRU one at a time. Power on page 95...
Visually check them for damage. If the problem persists, replace the following devices: K Non-Acer devices K Printer, mouse, and other external devices K Battery pack K Hard disc drive K DIMM K CD/DVD-ROM drive K PC cards 4. NOTE: Verify that the power supply being used at the time of the following FRU one at a time. Power on page 95...