Acer Aspire 1810t Service Guide

							Chapter 4141
USB Failure (Right up/down side)
If the rightside USB port fails, perform the following actions one at a time to correct the problem. Do not 
replace non-defective FRUs:
Other Failures
If the VGA board, LAN Port, external MIC or Speakers, PCI Express Card, 5-in-1 Card Reader or Volume 
Wheel fail, perform the following general steps to correct the problem. Do not replace non-defective FRUs:
1.Check whether the drive is OK.
2.Verify that the Test Fixture is ok.
3.Swap the mainboard and retest.
Start
Check USB/B to 
M/B cable Re-assemble the 
USB/B cable to M/B
OK
NG
Check USB/B
OK
Swap USB/B and 
USB cable 
OK
NG
Swap M/B
Start
Check USB/B to 
M/B cable Re-assemble the 
USB/B cable to M/B
OK
NG
Check USB/B
OK
Swap USB/B and 
USB cable 
OK
NG
Swap M/B 
						

							142Chapter 4
Intermittent Problems
Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a 
hardware defect, such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement 
should be considered only when a recurring problem exists.
When analyzing an intermittent problem, do the following:
1.Run the advanced diagnostic test for the system board in loop mode at least 10 times.
2.If no error is detected, do not replace any FRU.
3.If any error is detected, replace the FRU. Rerun the test to verify that there are no more errors. 
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 page 132.):
1.Power-off the computer.
2.Visually check them for damage. If any problems are found, replace the FRU.
3.Remove or disconnect all of the following devices:
• Non-Acer devices
• Printer, mouse, and other external devices
•Battery pack
• Hard disk drive
•DIMM 
• CD-ROM/Diskette drive Module
• PC Cards
4.Power-on the computer.
5.Determine if the problem has changed.
6.If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
7.If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
• System board
• LCD assembly 
						

							Chapter 4143
POST Code Reference Tables
These tables describe the POST codes and components of the POST process.
POST Routine DescriptionCode
PeiEventLog 01
OemServices 02
SioInit 03
MonoStatusCode 04
PentiumMCpuPeim 08
PlatformStage1 09
Variable 0A
IchInit 0B
PlatformStage2 0D
IchSmbusArpDisabled 0E
ClockGen 12
OpPresence 13
TcgPei 14
FindFv 15
DxeIpl 2F
LightMemoryInit 10
S3ResumeSoftSmi 11
Crc32SectionExtract 31
OemServices A4
EventLog A5
ScriptSave 32
AcpiS3Save 33
SmartTimer 34
JpegDecoder 35
PcxDecoder 36
PlatformBds 8A
MpCpu 37
LegacyMetronome 38
FtwLite 39
Runtime 3A
MonotonicCounter 3B
WatchDogTimer 3C
SecurityStub 3D
CpuIo 3E
Cf9Reset 3F
PcRtc 40
StatusCode 41
Variable 42
SmmVariable CF
EmuVariable 43 
						

							144Chapter 4
TcgDxe A2
PhysicalPresence A3
TpmDriver AE
TcgSmm AE
PhysicalPresenceReadyToBoot AE
DataHubRecordPolicy AD
Undi 86
SNP 90
BC 91
PxeDhcp4 92
Ebc 93
IsaBus 4D
IsaSerial 4E
Ps2Mouse 6D
IdeBus 4F
LightPciBus 50
UsbBot 6E
UsbCbi0 6F
UsbCbi1 70
UsbKb 71
UsbMassStorage 72
UsbMouse 74
Ehci 8F
Uhci 73
UsbBus 75
SmmBase C2
SmmDisp C5
SmmReloc C4
SmmRuntime C7
SmmThunk C9
OemServices D8
ChipsetInit 44
SmmAccess C0
PciHostBridge 46
PciExpress 47
GmchMbi CD
IchInit 48
IdeController 49
SataController 4A
IchSmbusLight 4B
SmmControl C1
Ich7MSmmDispatcher C8
IsaAcpiDriver 4C
POST Routine DescriptionCode 
						

							Chapter 4145
Fwh 52
SmmFwh CE
PciHotPlug 54
BootOptionPolicy 51
SetupUtility 76
Platform 55
PlatformIde 56
Ppm D9
Platform CC
Ihisi D0
SetupMouse f9
Int15Microcode D1
SmmPnp D2
Smbios 57
MemorySubClass 58
MiscSubclassDriver 59
SysPassword AB
PswdConsole AC
HddPswdServiceBody D7
HddPswdService A6
HiiDatabase 80
OemSetupBrowser 82
Font(English) 7E
Font(French) 7F
Font( Chinese ) 8D
UnicodeCollation B1
ConPlatform 5A
ConSplitter 5D
GraphicsConsole 79
Terminal 7A
VgaClass 5E
SaveMemoryConfig 5B
AcpiSupport 5C
AcpiPlatform 53
DataHub 5F
DataHubStdErr 7B
GenericMemoryTest 61
DiskIo 60
Fat 7C
Partition 7D
PciPlatform 6B
AlertStandardForma 45
PciSerial A8
POST Routine DescriptionCode 
						

							146Chapter 4
AsfInit A7
IdeRController A9
Legacy8259 63
LegacyRegion 64
LegacyInterrupt 65
BiosKeyboard 66
BiosVideo 67
MonitorKey 68
LegacyBios 69
LegacyBiosPlatform 6A
LegacyMouse 77
SmmUsbLegacy 78
AmtbxInvoke AA
OemBadgingSupport 83
POST Routine DescriptionCode 
						

							Chapter 5147
Jumper and Connector Locations
Mainboard Top View
ItemDescriptionItemDescription
PJ1 DC-in CN6 Bluetooth Connector
CN3 LCD connector U9 Clock Generator
JSIM2 SIM card connector CN2 LED board connector
PJ2 Battery connector CN17 USB connector
U12 EC Winbond CN18 HDMI
U14 Codec U2 HDMI level shift
CN8 Card reader board connector CN4 Keyboard connector
CN7 Speaker Connector CN5 Touch Pad connector
CN3: LCD connectorTOP SIDE
PJ1: DC-in
CN18: HDMI
CN17: USB 
CN2: LED board 
connector
CN4: Keyboard connector
U9: Clock Generator
CN5: Touch Pad connector
JSIM2: SIM card connector
PJ2: Battery connector
U12: EC Winbond 
WPCE775LA0DG
U14: Codec 
Realtek ALC269X 
CN8: Card Reader board Connector
CN7: Speaker Connector
CN6: Bule Tooth Connector
U2: HDMI level shift
Chapter 5 
						

							148Chapter 5
Mainboard Bottom View
ItemDescriptionItemDescription
CN10 DDR2 DIMM2 CN14 RTC
CN12 DDR2 DIMM1 U19 SB ICH9M
U18 CPU CN13 Mini Card
U17 NB GS45 CN11 Mini Card (WLAN)
CN16 Fan CN9 HDD
BOTTOM SIDECN15: CRT board connector
U18: CPU
U17: NB GS45
U19: SB ICH9M 
CN14: RTC
CN16: FAN
CN13: Mini Card 
      For 3G cardCN11: Mini Card 
      For WLAN 
CN12: DDR2 DIMM1CN10: DDR2 DIMM2
CN9: HDD 
connector 
						

							Chapter 5149
Clearing Password Check and BIOS Recovery
This section provides a procedure for clearing the password and BIOS. The Hardware Open Gap on the main 
board clears the CMOS of all user settings and restores factory defaults.
Mainboard CMOS Discharge
Discharging the CMOS clears all user settings.
1.Disassemble the notebook and take out the Mainboard. See “Removing the Mainboard” on page 71.
2.Remove the RTC battery. See “Removing the RTC Battery” on page 75.
3.Turn the mainboard over and short the G2 pad.
4.Reconnect the RTC battery and reassemble the unit. 
						

							150Chapter 5
BIOS Recovery by Crisis Disk
BIOS Recovery Boot Block
The BIOS Recovery Boot Block is a special block of BIOS. It is used to boot up the system with minimum BIOS 
initialization. Users can enable this feature to restore the BIOS firmware to the factory settings if a BIOS flash 
process fails.
BIOS Recovery Hotkey
The system provides a function hotkey: Fn+Esc, to enable the BIOS Recovery process when a system is 
powered on during BIOS POST. To use this function, it is strongly recommended to have the AC adapter and 
Battery present. If this function is enabled, the system will force the BIOS to enter a special BIOS block, called 
Boot Block.
Steps for BIOS Recovery from USB Storage
Before performing this procedure, prepare a Crisis USB key. The Crisis USB key can be made by executing 
the Crisis Disk program in a functioning system with a Windows XP or Vista OS.
IMPORTANT:The Crisis Disk program will overwrite all data on any drive that you use as a crisis disk.
Follow the steps below:
1.Modify the archive name from zh7 bios to ZH7X64.fd
2.Save ROM file (file name: ZH7X64.fd) to the root directory of the USB storage.
3.Plug the USB storage into a USB port.
4.Press Fn + ESC button then plug in AC.
The Power button flashes once.
5.Press Power button to initiate system CRISIS mode.
When CRISIS is complete, the system auto restarts with a workable BIOS. 
6.Update the latest version BIOS for this machine by the regular BIOS flashing process.