Acer Aspire 4310 Service Guide

							Chapter 4101
*  If the BIOS detects error 2C, 2E, or 3O (base 512K RAM error), it displays an additional word-bitmap (xxxx) indicating 
the address line or bits that failed. For example, 2C 0002 means address line 1 (bit one set) has failed. 2E 1020 
means data bits 12 and 5 (bits 12 and 5 set) have failed in the lower 16 bits. Note that error 30 cannot occur on 386SX 
systems because they have a 16 rather than 32-bit bus. The BIOS also sends the bitmap to the port-80 LED display. It 
first displays the check point code, followed by a delay, the high-order byte, another delay, and then the low-order byte 
of the error. It repeats this sequence continuously.
BIOS Beep Codes for Boot Block in Flash ROM
C4h Initialize system error handler
C5h PnPnd dual CMOS (optional)
C6h Initialize notebook docking (optional)
C7h Initialize notebook docking late
C8h Force check (optional)
C9h Extended checksum (optional)
D2h Unknown interrupt
CodeBeepsFor Boot Block in Flash ROM
E0h Initialize the chipset
E1h Initialize the bridge
E2h Initialize the CPU
E3h Initialize the system timer
E4h Initialize system I/O
E5h Check force recovery boot
E6h Checksum BIOS ROM
E7h Go to BIOS
E8h Set Huge Segment
E9h Initialize Multiprocessor
EAh Initialize OEM special code
EBh Initialize PIC and DMA
ECh Initialize Memory type
EDh Initialize Memory size
EEh Shadow Boot Block
EFh System memory test
F0h Initialize interrupt vectors
F1h Initialize Run Time Clock
F2h Initialize video
F3h Initialize System Management Mode
F4h 1 Output one beep before boot
F5h Boot to Mini DOS
F6h Clear Huge Segment
F7h Boot to Full DOS
CodeBeepsPOST Routine Description 
						

							102Chapter 4
Index of Symptom-to-FRU Error Message
LCD-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
LCD backlight doesnt work
LCD is too dark
LCD brightness cannot be adjusted
LCD contrast cannot be adjusted
TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
system.
TReconnect the LCD connectors.
TKeyboard (if contrast and brightness function key doesnt 
work).
TLCD inverter ID
TLCD cable
TLCD inverter board
TLCD
TMainboard
Unreadable LCD screen 
Missing pels in characters
Abnormal screen 
Wrong color displayed
TReconnect the LCD connector
TLCD inverter ID
TLCD cable
TLCD inverter board
TLCD
TMainboard
LCD has extra horizontal or vertical lines 
displayed.
TLCD inverter ID
TLCD inverter board
TLCD cable
TLCD
TMainboard
Indicator-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
Indicator incorrectly remains off or on, but 
system runs correctly
TReconnect the LCD inverter board.
TMainboard
Power-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
Power shuts down during operation
TPower source (battery pack and power adapter). See “Power 
System Check” on page 93. 
TBattery pack
TPower adapter
THard disk drive & battery connection board
TMainboard
The system doesn’t power-on.
TPower source (battery pack and power adapter). See “Power 
System Check” on page 93. 
TBattery pack
TPower adapter
THard disk drive & battery connection board
TMainboard 
						

							Chapter 4103
The system doesn’t power-off.TPower source (battery pack and power adapter). See “Power 
System Check” on page 93. 
THold and press the power switch for more than 4 seconds.  
TMainboard
Battery can’t be charged
TSee “Check the Battery Pack” on page 93. 
TBattery pack
TMainboard
PCMCIA-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
System cannot detect the PC Card 
(PCMCIA) 
TPCMCIA slot assembly
TMainboard
PCMCIA slot pin is damaged. PCMCIA slot assembly
Memory-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
Memory count (size) appears different from 
actual size.
TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
system.
TDIMM
TMainboard
Speaker-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
In Windows, multimedia programs, no 
sound comes from the computer. 
TAudio driver
TSpeaker
TMainboard
Internal speakers make noise or emit no 
sound.
TSpeaker
TMainboard
Power Management-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
The system will not enter hibernation
TSee “Save to Disk (S4)” on page 44.
TKeyboard (if control is from the keyboard)
THard disk drive
TMainboard
The system doesnt enter hibernation mode 
and four short beeps every minute.
TPress Fn+o and see if the computer enters hibernation 
mode.
TTouchpad
TKeyboard
THard disk connection board
THard disk drive
TMainboard
The system doesn’t enter standby mode 
after closing the LCD
TSee “Save to Disk (S4)” on page 44.
TMainboard Power-Related Symptoms
Symptom / ErrorCheck or do the following in sequence 
						

							104Chapter 4
The system doesnt resume from 
hibernation mode.TSee “Save to Disk (S4)” on page 44.
THard disk connection board
THard disk drive
TMainboard
The system doesnt resume from standby 
mode after opening the LCD.
TSee “Save to Disk (S4)” on page 44.
TMainboard
Battery fuel gauge in Windows doesn’t go 
higher than 90%. 
TRemove battery pack and let it cool for 2 hours.
TRefresh battery (continue use battery until power off, then 
charge battery).
TBattery pack
TMainboard
System hangs intermittently.
TReconnect hard disk/CD-ROM drives. 
THard disk connection board
TMainboard
Peripheral-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
System configuration does not match the 
installed devices. 
TRun “Load Setup Defaults” in BIOS Setup Utility, then reboot 
system.
TReconnect hard disk/CD-ROM/diskette drives.
External display does not work correctly.
TPress Fn+F5 to switch to LCD or CRT
TMainboard
USB does not work correctly
TMainboard
Print problems.
TRun printer self-test.
TPrinter driver
TPrinter cable
TPrinter
TMainboard
Keyboard/Touchpad-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
Keyboard (one or more keys) does not 
work.
TReconnect the keyboard cable.
TKeyboard
TMainboard
Touchpad does not work.
TReconnect touchpad cable.
TTouchpad board
TMainboard Power Management-Related Symptoms
Symptom / ErrorCheck or do the following in sequence 
						

							Chapter 4105
NOTE: If you cannot find a symptom or an error in this list and the problem remains, see “Undetermined 
Problems” on page 107. Modem-Related Symptoms
Symptom / ErrorCheck or do the following in sequence
Internal modem does not work correctly.
TModem phone port
TModem combo board
TMainboard 
						

							106Chapter 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 mainboard 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.  
						

							Chapter 4107
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.  
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 
System Check” on page 93.)
Follow procedures below to isolate the failing FRU. Do not isolate non-defective FRU.
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:
TNon-Acer devices
TPrinter, mouse, and other external devices
TBattery pack
THard disk drive
TDIMM 
TCD/DVD-ROM drive 
TPC cards
4.Power on the computer.
5.Determine if the problem has been resolved.
6.If the problem does not recur, reconnect the removed devices one at a time until you find the failed FRU.
7.If the problem persists, replace the following FRU one at a time. Do not replace a non-defective FRU.
TSystem board
TLCD assembly 
						

							108Chapter 4 
						

							Chapter 5109
System Block Diagram
System Block Diagram and Connector Locations
Chapter 5 
						

							11 0Chapter 5
Board Layout
Top View
#Item#Item
1 LCD connector 6 Power board cable connector
2 Internal microphone cable connector 7 USB board cable connector
3 Speaker cable connector 8 ExpressCard/54 slot
4 Keyboard cable connector 9 ICH8-M chipset (south bridge)
5 Touchpad cable connector 10 Launch board cable connector