Acer Aspire 5538 Service Guide

161Chapter 4
ODD Failure
If the ODD fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
ODD Not Operating Correctly
If the ODD exhibits any of the following symptoms it may be faulty:
• Audio CDs do not play when loaded 
• DVDs do not play when loaded 
• Blank discs do not burn correctly 
• DVD or CD play breaks up or jumps 
• Optical drive not found or not active: 
• Not shown in My Computer or the BIOS setup 
• LED does not flash when the...

Chapter 4162
4.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager.
a.Double-click lDE ATA/ATAPI controllers. If a device displays a down arrow, right-click on the device 
and click Enable.
b.Double-click DVD/CD-ROM drives. If the device displays a down arrow, right-click on the device and 
click Enable.
c.Check that there are no yellow exclamation marks against the items in l D E  ATA / ATA P I  c o n t r o l l e r s. If 
a device has an exclamation mark, right-click on the...

163Chapter 4
a.Navigate to Start´ Control Panel´ System and Maintenance´ System´ Device Manager.
b.Double-click IDE ATA/ATAPI controllers, then right-click ATA Device 0. 
c.Click Properties and select the Advanced Settings tab. Ensure that the Enable DMA box is 
checked and click OK. 
d.Repeat for the other ATA Devices shown if applicable.
Drive Not Detected
If Windows cannot detect the drive, perform the following actions one at a time to correct the problem.
1.Restart the computer and press F2 to enter...

Chapter 4164
USB Failure (Right side)
If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not 
replace a non-defective FRUs: 

165Chapter 4
Wireless Function Failure
If the WLAN/WiMAX fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs:
Start
Reconnect the
Antenna to  the
cardCheck Antenna to
WLAN/WiMAX C ard
Check AntennaSwap the Antenna
Check WLAN/Wi MAX
CardSwap WL AN/
WiMAX Card
Check Function BoardSwap Function
Board
Swap Mainboard
OK
OK
OK
OK
NG
NG
NG
NG 

Chapter 4166
Bluetooth Function Failure
If the Bluetooth fails, perform the following actions one at a time to correct the problem. Do not replace a non-
defective FRUs:
Easy Button Failure
If the Media Board fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs:
Start
Reconnect the
cable to the
moduleCheck BT cable
connected
Check BT cableSwap the cable
Check BT ModuleSwap BT Module
Check Function BoardSwap Function
Board
Swap Mainboard
OK
OK
OK...

167Chapter 4
Thermal Unit Failure
If the Thermal Unit fails, perform the following actions one at a time to correct the problem. Do not replace a 
non-defective FRUs:
Start
Reconnect the
cable to the
MainboardCheck Fan pow er cable
Check FanSwap the Therm al
Module
CPU Heatink w ell
seat ed?Seat it well
Check CPUSwap CPU
Swap Mainboard
OK
OK
OK
OK
NG
NG
NG
NG 

Chapter 4168
External Mouse Failure
If an external Mouse fails, perform the following actions one at a time to correct the problem. 
1.Try an alternative mouse.
2.If the mouse uses a wireless connection, insert new batteries and confirm there is a good connection. See 
the mouse user manual.
3.If the mouse uses a USB connection, try an alternate USB port.
4.Try an alternative program to verify mouse operation. Reinstall the program experiencing mouse failure.
5.Restart the computer.
6.Remove any recently...

169Chapter 4
Undetermined Problems
The diagnostic problems does not identify which adapter or device failed, which installed devices are incorrect, 
whether a short circuit is suspected, or whether the system is inoperative. 
Follow these procedures to isolate the failing FRU (do not isolate non-defective FRU).
NOTE: Verify that all attached devices are supported by the computer.
NOTE: Verify that the power supply being used at the time of the failure is operating correctly. (See “Power On 
Issue” on...

Chapter 4170
POST Code Tables
These tables describe the POST codes and descriptions during the POST.
Sec
NO_EVICTION_MODE_DEBUG EQU 1 (CommonPlatform\sec\Ia32\SecCore.inc)
Memory
DEBUG_BIOS equ 1 (Chipset\Alviso\MemoryInitAsm\IA32\IMEMORY.INC)
Post CodeDescription
0xC2 MTRR setup
0xC3 Enable cache
0xC4 Establish cache tags
0xC5 Enter NEM, Place the BSP in No Fill mode, set CR0.CD = 1, CR0.NW = 0.
0xCF Cache Init Finished
Post CodeDescription
0xA0 First memory check point
0x01 Enable MCHBAR
0x02 Check for...