Acer Aspire 4730zg Service Guide

							Chapter 3121
3. Press down on the areas marked below to secure in place. 
						

							122Chapter 3
Replacing the Switch Cover
Replacing the WLAN Module
1.Connect the Switch Cover FFC as shown. 2. Replace the Switch cover, and press down to 
secure in place.
3. Turn the computer over and replace the two securing screws.
1.Insert the WLAN board into the WLAN socket. 2. Replace the two screws to secure the module. 
						

							Chapter 3123
Replacing the Hard Disk Drive Module
3. Connect the two antenna cables to the module.
1.Place the HDD in the HDD carrier. 2. Replace the four screws to secure the carrier.
3. Insert the HDD, interface side first, until HDD firmly 
slides in place.4. Push the HDD down to secure in place. 
						

							124Chapter 3
Replacing the DIMM Modules
NOTE: To replace DIMM Module 2, first remove DIMM Module 1. In this procedure, only DIMM Module 1 is 
shown. 
1.Insert the DIMM Module in place. 2. Press down to lock the DIMM module. 
						

							Chapter 3125
Replacing the ODD Module 
1.With the ODD tray in the eject position, replace the 
ODD cover on the new ODD Module.2. Press the cover into the tray, bottom edge first, to 
secure.
3. Turn ODD Module around and secure bracket with 
three screws.4. Slide the module in the chassis and press until the 
module is flush with the chassis.
5. Replace the single screw to secure the Module. 
						

							126Chapter 3
Replacing the Lower Covers
1.Replace the Memory Cover. 2. Replace the two screws to secure in place.
3. Replace the WLAN Cover. 4. Replace the screw to secure in place.
5. Replace HDD Cover. 6. Tighten the two screws to secure in place. 
						

							Chapter 3127
Replacing the Express and SD Card Trays
1.Insert the Express Card and push into the slot until 
flush with the chassis cover.2. Insert the SD Card and push into the slot until flush 
with the chassis cover. 
						

							128Chapter 3 
						

							Chapter 4129
Troubleshooting
Common Problems
Use the following procedure as a guide for computer problems.
NOTE: The diagnostic tests are intended to test only Acer products. Non-Acer products, prototype cards, or 
modified options can give false errors and invalid system responses.
1.Obtain the failing symptoms in as much detail as possible.
2.Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating 
the same operation.
3.Use the following table with the verified symptom to determine which page to go to.
4.If the Issue is still not resolved, see “Online Support Information” on page 185.
Symptoms (Verified)Go To
Power On Issue Page 130
No Display Issue Page 131
LCD Failure Page 133
Internal Keyboard Failure Page 133
Touchpad Failure Page 134
Internal Speaker Failure Page 134
Internal Microphone Failure Page 136
ODD Failure Page 138
Modem Failure Page 141
Wireless Failure Page 141
Acer EasyLaunch Button Failure Page 142
Thermal Unit Failure Page 142
Other Functions Failure Page 143
Intermittent Failures Page 144
Undetermined Failures Page 144
Chapter 4 
						

							130Chapter 4
Power On Issue
If the system doesn’t power on, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs:
Computer Shutsdown Intermittently
If the system powers off at intervals, perform the following actions one at a time to correct the problem.
1.Check the power cable is properly connected to the computer and the electrical outlet. 
2.Remove any extension cables between the computer and the outlet.
3.Remove any surge protectors between the computer and the electrical outlet. Plug the computer directly 
into a known good electrical outlet. 
4.Disconnect the power and open the casing to check the Thermal Unit (see “Thermal Unit Failure” on page 
142) and fan airways are free of obstructions.
5.Disable the power management settings in the BIOS to ensure they are not the cause of the problem (see 
“Boot” on page 33).
6.Remove all external and non-essential hardware connected to the computer that are not necessary to 
boot the computer to the failure point.
7.Remove any recently installed software.
8.If the Issue is still not resolved, see “Online Support Information” on page 185.