Acer Motherboard Diagrams

Use the following procedure as a guide for computer problems.

NOTE: The diagnostic tests are intended to test this model. Non-Acer products, prototype cards, or modified options can give false errors and invalid system responses.

  1. Duplicate symptom and obtain the failing symptoms in as much detail as possible.
  2. Distinguish symptom. Verify the symptoms by attempting to re-create the failure by running the diagnostic test or by repeating the same operation.
  3. Disassemble and assemble the unit without any power sources.
  4. If any problem occurs, you can perform visual inspection before you fellow this chapter's instructions. You can check the following:

power cords are properly connected and secured;

there are no obvious shorts or opens;

there are no obviously burned or heated components;

all components appear normal.

5. Use the following table with the verified symptom to determine which page to go to.

Symptoms (Verified)

Go To

Power failure. (The power indicator does not go on or stay on.)

"Power System Check" on page 84.

POST does not complete. No beep or error codes are indicated.

"Power-On Self-Test (POST) Error Message" on page 86

"Undetermined Problems" on page 98

POST detects an error and displayed messages on screen.

"Error Message List" on page 87

Other symptoms (i.e. LCD display problems or others).

"Power-On Self-Test (POST) Error Message" on page 86

Symptoms cannot be re-created (intermittent problems).

Use the customer-reported symptoms and go to "Power-On Self-Test (POST) Error Message" on page 86

"Intermittent Problems" on page 97 "Undetermined Problems" on page 98

System Check Procedures External Diskette Drive Check

If an error occurs with the internal diskette drive, reconnect the diskette connector on the system board. If the error still remains:

  1. Reconnect the external diskette drive/DVD-ROM module.
  2. Replace the external diskette drive/CD-ROM module.
  3. Replace the main board.

External CD-ROM Drive Check

Do the following to isolate the problem to a controller, drive, or CD-ROM. Make sure that the CD-ROM does not have any label attached to it. The label can cause damage to the drive or can cause the drive to fail.

Do the following to select the test device:

  1. Boot from the diagnostics diskette and start the diagnostics program.
  2. See if CD-ROM Test is passed when the program runs to CD-ROM Test.
  3. Follow the instructions in the message window.

If an error occurs, reconnect the connector on the System board. If the error still remains:

  1. Reconnect the external diskette drive/CD-ROM module.
  2. Replace the external diskette drive/CD-ROM module.
  3. Replace the main board.

Keyboard or Auxiliary Input Device Check

Remove the external keyboard if the internal keyboard is to be tested.

If the internal keyboard does not work or an unexpected character appears, make sure that the flexible cable extending from the keyboard is correctly seated in the connector on the system board.

If the keyboard cable connection is correct, run the Keyboard Test.

If the tests detect a keyboard problem, do the following one at a time to correct the problem. Do not replace a non-defective FRU:

  1. Reconnect the keyboard cables.
  2. Replace the keyboard.
  3. Replace the main board.

The following auxiliary input devices are supported by this computer:

  • Numeric keypad
  • External keyboard

If any of these devices do not work, reconnect the cable connector and repeat the failing operation.

Memory check

Memory errors might stop system operations, show error messages on the screen, or hang the system.

  1. Boot from the diagnostics diskette and start the doagmpstotics program (please refer to main board.
  2. Go to the diagnostic memory in the test items.
  3. Press F2 in the test items.
  4. Follow the instructions in the message window.

NOTE: Make sure that the DIMM is fully installed into the connector. A loose connection can cause an error.

Power System Check

To verify the symptom of the problem, power on the computer using each of the following power sources:

  1. Remove the battery pack.
  2. Connect the power adapter and check that power is supplied.
  3. Disconnect the power adapter and install the charged battery pack; then check that power is supplied by the battery pack.

If you suspect a power problem, see the appropriate power supply check in the following list: □ "Check the Battery Pack" on page 85

Check the Battery Pack

To check the battery pack, do the following: From Software:

  1. Check out the Power Management in control Panel
  2. In Power Meter, confirm that if the parameters shown in the screen for Current Power Source and Total Battery Power Remaining are correct.
  3. Repeat the steps 1 and 2, for both battery and adapter.
  4. This helps you identify first the problem is on recharging or discharging. From Hardware:
  5. Power off the computer.
  6. Remove the battery pack and measure the voltage between battery terminals 1(+) and 6(ground). See the following figure
  7. If the voltage is still less than 7.5 Vdc after recharging, replace the battery.

To check the battery charge operation, use a discharged battery pack or a battery pack that has less than 50% of the total power remaining when installed in the computer.

If the battery status indicator does not light up, remove the battery pack and let it return to room temperature. Re-install the battery pack.

If the charge indicator still does not light up, replace the battery pack. If the charge indicator still does not light up, replace the DC/DC charger board.

Touchpad check

If the touchpad doesn't work, do the following actions one at a time to correct the problem. Do not replace a non-defective FRU:

  1. After rebooting, run Tracking Pad PS2 Mode Driver. For example, run Syn touch driver.
  2. Run utility with the PS/2 mouse function and check if the mouse is working.
  3. If the PS/2 mouse does not work, then check if the main board to switch board FPC is connected O.K.
  4. If the main board to switch board FPC is connected well, then check if the FCC on touch pad PCB connects properly.
  5. If the FFC on touch pad PCB connects properly, then check if LS851 JP1 Pin6=5V are pulese. If yes, then replace switch board. If no, then go to next step.
  6. Replace touch pad PCB.
  7. If the touch pad still does not work, then replace FPC on Track Pad PCB.

After you use the touchpad, the pointer drifts on the screen for a short time. This self-acting pointer movement can occur when a slight, steady pressure is applied to the touchpad pointer. This symptom is not a hardware problem. No service actions are necessary if the pointer movement stops in a short period of time.

Power-On Self-Test (POST) Error Message

The POST error message index lists the error message and their possible causes. The most likely cause is listed first.

NOTE: Perform the FRU replacement or actions in the sequence shown in FRU/Action column, if the FRU replacement does not solve the problem, put the original part back in the computer. Do not replace a non-defective FRU.

This index can also help you determine the next possible FRU to be replaced when servicing a computer.

If the symptom is not listed, see "Undetermined Problems" on page 98.

The following lists the error messages that the BIOS displays on the screen and the error symptoms classified by function.

NOTE: Most of the error messages occur during POST. Some of them display information about a hardware device, e.g., the amount of memory installed. Others may indicate a problem with a device, such as the way it has been configured.

NOTE: If the system fails after you make changes in the BIOS Setup Utility menus, reset the computer, enter Setup and install Setup defaults or correct the error.

Index of Error Messages

Error Message List

Error Messages

FRU/Action in Sequence

Struck Key

See "Keyboard or Auxiliary Input Device Check" on page 83

System CMOS checksum bad - Default configuration used

RTC battery

Run BIOS Setup Utility to reconfigure system, then reboot system.

Run BIOS Setup Utility to reconfigure system time, then reboot system.

Main board

Previous boot incomplete - Default configuration used

"Load Default Settings" in BIOS Setup Utility. RTC battery Main baord

Invalid System Configuration Data

"Load Default Settings" in BIOS Setup Utility. Main board

Operating system not found

Enter Setup and see if fixed disk and drive A are properly identified. Dikette drive Hard disk drive Main board

Error Message List

No beep Error Messages

FRU/Action in Sequence

Power-on indicator turns off and LCD is blank.

Power source (battery pack and power adapter.) See "Power System Check" on page 84

Ensure every connector is connected tightly and correctly. Reconnect the DIMM. Main board.

Power-on indicator turns on and LCD is blank.

Power source (battery pack and power adapter.) See "Power

System Check" on page 84

Reconnect the LCD connector

Hard disk drive

LCD cable

LCD inverter

Main board

Power-on indicator turns on and LCD is blank. But you can see POST on an external CRT.

Reconnect the LCD connectors. LCD cable LCD inverter LCD

Main board

Power-on indicator turns on and a blinking cursor shown on LCD during POST.

Ensure every connector is connected tightly and correctly. Main board

Phoenix BIOS Beep Codes

Code

Beeps

POST Routine Description

02h

Verify Real Mode

03h

Disable Non-Maskable Interrupt (NMI)

04h

Get CPU type

06h

Initialize system hardware

07h

Disable shadow and execute code from the ROM.

08h

Initialize chipset with initial POST values

09h

Set IN POST flag

0Ah

Initialize CPU registers

0Bh

Enable CPU cache

0Ch

Initialize caches to initial POST values

0Eh

Initialize I/O component

0Fh

Initialize the local bus IDE

10h

Initialize Power Management

11h

Load alternate registers with initial POST values

12h

Restore CPU control word during warm boot

13h

Initialize PCI Bus Mastering devices

14h

Initialize keyboard controller

16h

1-2-2-3

BIOS ROM checksum

17h

Initialize cache before memory autosize

18h

8254 timer initialization

1Ah

8237 DMA controller initialization

1Ch

Reset Programmable Interrupt Controller

20h

1-3-1-1

Test DRAM refresh

22h

1-3-1-3

Test 8742 Keyboard Controller

24h

Set ES segment register to 4 GB

28h

Autosize DRAM

29h

Initialize POST Memory Manager

2Ah

Clear 215 KB base RAM

2Ch

1-3-4-1

RAM failure on address line xxxx

2Eh

1-3-4-3

RAM failure on data bits xxxx of low byte of memory bus

2Fh

Enable cache before system BIOS shadow

32h

Test CPU bus-clock frequency

33h

Initialize Phoenix Dispatch Manager

36h

Warm start shut down

38h

Shadow system BIOS ROM

3Ah

Autosize cache

3Ch

Advanced configuration of chipset registers

3Dh

Load alternate registers with CMOS values

41h

Initialize extended memory for RomPilot.

42h

Initialize interrupt vectors

45h

POST device initialization

46h

2-1-2-3

Check ROM copyright notice

Code

Beeps

POST Routine Description

47h

Initialize I20 support

48h

Check video configuration against CMOS

49h

Initialize PCI bus and devices

4Ah

Initialize all video adapters in system

4Bh

QuietBoot start (optional)

4Ch

Shadow video BIOS ROM

4Eh

Display BIOS copyright notice

50h

Display CPU type and speed

51h

Initialize EISA board

52h

Test keyboard

54h

Set key click if enabled

55h

Enable USB devices

58h

2-2-3-1

Test for unexpected interrupts

59h

Initialize POST display service

5Ah

Display prompt "Press F2 to enter SETUP"

5Bh

Disable CPU cache

5Ch

Test RAM between 512 and 640 KB

60h

Test extended memory

62h

Test extended memory address lines

64h

Jump to User Patch1

66h

Configure advanced cache registers

67h

Initialize Multi Processor APIC

68h

Enable external and CPU caches

69h

Setup System Management Mode (SMM) area

6Ah

Display external L2 cache size

6Bh

Load custom defaults (optional)

6Ch

Display shadow-area message

6Eh

Display possible high address for UMB recovery

70h

Display error messages

72h

Check for configuration errors

76h

Check for keyboard errors

7Ch

Set up hardware interrupt vectors

7Eh

Initialize coprocessor if present

80h

Disable onboard Super I/O ports and IRQs

81h

Late POST device initialization

82h

Detect and install external RS232 ports

83h

Configure non-MCD IDE controllers

84h

Detect and install external parallel ports

85h

Initialize PC-compatible PnP ISA devices

86h

Re-initialize onboard I/O ports

87h

Configure Motherboard Configurable Devices (optional)

88h

Initialize BIOS Data Area

89h

Enable Non-Maskable Interrupts (NMIs)

8Ah

Initialize Extended BIOS Data Area

Code

Beeps

POST Routine Description

8Bh

Test and initialize PS/2 mouse

8Ch

Initialize floppy controller

8Fh

Determine number of ATA drives (optional)

90h

Initialize hard-disk controllers

91h

Initialize local-bus hard-disk controllers

92h

Jump to UserPatch2

93h

Build MPTABLE for multi-processor boards

95h

Install CD ROM for boot

96h

Clear huge ES segment register

97h

Fixup Multi Processor table

98h

1-2

Search for option ROMs. One long, two short beeps on checksum failure.

99h

Check for SMART drive (optional)

9Ah

Shadow option ROMs

9Ch

Set up Power Management

9Dh

Initialize security engine (optional)

9Eh

Enable hardware interrupts

9Fh

Determine number of ATA and SCSI drives

A0h

Set time of day

A2h

Check key lock

A4h

Initialize Typematic rate

A8h

Erase F2 prompt

AAh

Scan for F2 key stroke

ACh

Enter SETUP

AEh

Clear Boot flag

B0h

Check for errors

B1h

Inform RomPilot about the end of POST.

B2h

POST done- prepare to boot operating system

B4h

1

One short beep before boot

B5h

Terminate QuietBoot (optional)

B6h

Check password (optional)

B7h

Initialize ACPI BIOS

B9h

Prepare Boot

BAh

Initialize SMBIOS

BBh

Initialize PnP Option ROMs

BCh

Clear parity checkers

BDh

Display MultiBoot menu

BEh

Clear screen (optional)

BFh

Check virus and backup reminders

C0h

Try to boot with INT 19

C1h

Initialize POST Error Manager (PEM)

C2h

Initialize error logging

C3h

Initialize error display function

C4h

Initialize system error handler

C5h

PnPnd dual CMOS (optional)

C6h

Initialize notebook docking (optional)

Code

Beeps

POST Routine Description

C7h

Initialize notebook docking late

C8h

Force check (optional)

C9h

Extended checksum (optional)

CAh

Redirect Int 15h to enable remote keyboard

CBh

Redirect Int 13h to Memory Technologies Devices such as ROM, RAM, PCMCIA, and serial disk.

CCh

Redirect Int 10h to enable remote serial video

CDh

Re-map I/O and memory for PCMCIA

CEh

Initialize digitizer and display message.

D2h

Unknown interrupt

The following are for 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 Multi Processor

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

F5h

Clear Huge Segment

F6h

Boot to Mini DOS

F7h

Boot to Full DOS

Index of Symptom-to-FRUError Message

LCD-Related Symptoms

Symptom / Error

Action in Sequence

LCD backlight doesn't work

First, plug a monitor to CRT port. Next, enter BIOS utility to running

"Load Default Settings" then reboot the system.

Reconnect the LCD connectors.

Keyboard (if the brightness function key doesn't work).

LCD cable

LCD inverter

Main board

LCD is too dark

LCD brightness cannot be adjusted

Enter BIOS Utility to execute "Load Setup Default Settings", then reboot system.

Reconnect the LCD connectors.

Keyboard (if the brightness function key doesn't work).

LCD cable

LCD inverter

Main board

Unreadable LCD screen

Missing pels in characters

Abnormal screen

Wrong color displayed

LCD has extra horizontal or vertical lines displayed.

Reconnect the LCD cable

LCD cable

Main board

Indicator-Related Symptoms

Symptom / Error

Action in Sequence

Indicator incorrectly remains off or on, but system runs correctly

Main board

HDD/CD-ROM active indicators cannot work

HDD/CD-ROM drive Device driver Main board

Power-Related Symptoms

Symptom / Error

Action in Sequence

Power shuts down during operation

Power source (battery pack and power adapter). See "Power System Check" on page 84. Battery pack AC adapter

See if the thermal module is overheat (Heat sink or fan). Main board

The system cannot power-on.

Power source (battery pack and power adapter). See "Power

System Check" on page 84.

Battery pack

Power adapter

Main board

The system cannot power-off.

In Windows XP operating system, hold and press the power switch for more than 4 seconds. If the system can power off, then the main board is OK. Verify OS in the HDD. Main board

Power-Related Symptoms

Symptom / Error

Action in Sequence

Battery can't be charged or discharged

See "Check the Battery Pack" on page 85. Battery pack Main board

System hang during POST

ODD/HDD/FDD/RAM module Main board

PCMCIA-Related Symptoms

Symptom / Error

Action in Sequence

System cannot detect the PC Card (PCMCIA)

PCMCIA slot assembly Main board

PCMCIA slot pin is damaged.

PCMCIA slot assembly

PC Card cannot be inserted or ejected

Check if the PCMCIA slot is blocked Main board

Memory-Related Symptoms

Symptom / Error

Action in Sequence

Memory count (size) appears different from actual size.

Enter BIOS Setup Utility to execute "Load Default Settings" then reboot system.

RAM module

Main board

Check BIOS revision

System can power on, but you hear two long beeps: "B--, B--" and the LCD is blank.

Reinsert DIMM DIMM Main board

Speaker-Related Symptoms

Symptom / Error

Action in Sequence

In Windows, multimedia programs, no sound comes from the computer.

OS volume control Audio driver Speaker Main board

Internal speakers make noise or emit no sound.

Speaker Main board

Microphone cannot work

Audio driver

Volume control in Windows XP Main board

Power Management-Related Symptoms

Symptom / Error

Action in Sequence

The system will not enter hibernation mode

Power option in Windows XP Hard disk drive Main board

The system doesn't enter standby mode after closing the lid of the portable computer.

Driver of Power Option Properties Lid close switch in upper case Main board

Power Management-Related Symptoms

Symptom / Error

Action in Sequence

The system doesn't resume from hibernation/ standby mode.

Connect AC adapter then check if the system resumes from

Standby/Hibernation mode.

Check if the battery is low.

Hard disk drive

Main board

The system doesn't resume from standby mode after opening the lid of the portable computer.

LCD cover switch Main board

Battery fuel gauge in Windows doesn't go higher than 90%.

Refresh battery (continue use battery until power off, then charge battery).

Battery pack

Main board

System hangs intermittently.

Reconnect hard disk/CD-ROM drives. Main board

Peripheral-Related Symptoms

Symptom / Error

Action in Sequence

System configuration does not match the installed devices.

Enter BIOS Setup Utility to execute "Load Setup defaults", then reboot system.

Reconnect hard disk/CD-ROM drives/FDD or other peripherals. Main board

External display does not work correctly.

Press Fn+F5, LCD/CRT/Both display switching

Keyboard

Main board

USB does not work correctly

Main board

Print problems.

Enter BIOS Setup Utility to execute "Load Default Settings" then reboot the system.

Run printer self-test.

Printer driver

Printer cable

Printer

Main board

Parallel port device problems

Enter BIOS Setup Utility to execute "Load Default Settings" then reboot the system.

Device driver

Device cable

Device

Main board

Keyboard/Touchpad-Related Symptoms

Symptom / Error

Action in Sequence

Keyboard (one or more keys) does not work.

Reconnect the keyboard cable.

Keyboard

Main board

Touchpad does not work.

Reconnect touchpad cable. Touchpad board Main board

Modem/LAN-Related Symptoms

Symptom / Error

Action in Sequence

Internal modem does not work correctly.

Phone cable Driver

Reconnect the Internal modem cable to the main board tightly. Main board

Internal LAN does not work correctly

Lan cable Driver Main board

NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 98.

NOTE: If you cannot find a symptom or an error in this list and the problem remains, see "Undetermined Problems" on page 98.

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 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 System Check" on page 84):

  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

□ PC Cards

  1. Power-on the computer.
  2. Determine if the problem has changed.
  3. If the problem does not recur, reconnect the removed devices one at a time until you find the failing FRU.
  4. If the problem remains, replace the following FRU one at a time. Do not replace a non-defective FRU:
  • System board
  • LCD assembly

Chapter 5

Jumper and Connector Locations

Mainboard Layout

Sw6 Acer Aspire Motherboard

3D3V_S0

SRN10KJ-5-GP RN16

16 CHK PW#

33 MATRIXID1# 33 MATRIXD2#

PH at ICH6M

Plz put G12 close SW1

GAP-OPEN G3

(g3>SC1000P50V3JN-GP

Switch

Function

SW6-1

CHK_PW&#

SW6-2

No function

SW1-3

MATRIXID 1#

SW1-4

MATRIXID 2#

Adapter Acer Aspire 5310 Jumper

PIN Pad: Bypassing Password Check, Keep shorting G3(2 triangle pad) as above PIN pad and then powering on the system will force the BIOS to clear Supervisor and User passwords. That means both the power-on and setup passwords are all cleared.

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