Trouble Shooting
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Trouble Shooting. 1. No Power. 9. Hard Drive Test Error. 2. Battery Can not Be Charged. 10. CD-ROM Driver Test Error. 3. No Display. 11. USB Port Test Error. 4. LCD No Display or Picture Abnormal. 12. PC Card Socket Test Error. 5. External Monitor No Display or Color Abnormal.

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Trouble Shooting

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Trouble shooting

Trouble Shooting

1. No Power

9. Hard Drive Test Error

2. Battery Can not Be Charged

10. CD-ROM Driver Test Error

3. No Display

11. USB Port Test Error

4. LCD No Display or Picture Abnormal

12. PC Card Socket Test Error

5. External Monitor No Display or Color Abnormal

13. Mini-PCI Socket Test Error

6. TV Test Error

14. Audio Failure

7. Memory Test Error

15. LAN Test Error

8. Keyboard (K/B) Touch-Pad (T/P) Test Error


Trouble shooting

*1:No power definition

Base on ACPI Spec. We define the no power as while we press the power button, the system can’t leave S5 status

or none the PG signal send out from power supply.

Judge condition:

  • Check whether there are any voltage feedback control to turn off the power.

  • Check whether no CPU power will cause system can’t leave S5 status.

If there are not any diagram match these condition, we should stop analyzing the schematic in power supply sending

out the PG signal. If yes, we should add the effected analysis into no power chapter.

*2:No display definition

Base on the digital IC three basic working conditions: working power, reset, Clock. We define the no display as

while system leave S5 status but can’t get into S0 status.

Judge condition:

  • Check which power will cause no display.

  • Check which reset signal will cause no display.

  • Check which Clock signal will cause no display

Base on these three conditions to analyze the schematic and edit the no display chapter.

  • S5: Soft Off

  • S0: Working

Keyword:

For detail please refer the ACPI specification


Trouble shooting

Example for Main Voltage Map

When power button is pressed ,nothing happens ,power indicator does not light up.

L7

+3.3VDACVDD

L507

+NB_AVDD1

PF501,PD501

PL501,PL502

L509

PD503

PU6,PD4,PR20

PU502

L508

Power In

PWR_VDDIN

+5VA

+3VA

+3VA_KBC

+NB_AVDD2

PJ501

PQ502

PR501

PR502

L1

Q1

PD502

PU5

+3VS_LCD

+LCDVCC

+3VS

(Discharge)

PF503,PU14,PU15,

PD6~PD9,PQ508,PQ507,PQ509,

PQ510,PL508,PL509

U517

+VCCA

PD504

PU12

ADINP

D/VMAIN

+CPU_CORE

+2.5VDDA

PU10,PQ13,PD5

PF502,PL504

PU4,PD2

PL503,PQ503,PL506PR507,JO3,JO4,PJO2

PU8

PD507PU501

PL507PR511PD3

+1.2VLDTA

+3VSB

L513

PF1

PL1

PL2

PQ6

PQ7

+3VS_USB

(Charge)

PU1

L25

+3V

+3V_MII

L521

+3V_LAN

BATTERY

PU3

L21,L512

(Discharge)

+5VS

+5VS_CDROM

L30,L520

+5VS_HD

PQ504,PQ505,PL506,PD1 PR510,JO5,JO6,PJO1

L530,R712

+5VSB

AVDD

L532,L33

+AMP_5V

U504

USB0VCC5

PF504,PJO505,PU16,PU17,PU18PD508,PD11,PL510,PR91,PR96

PD12,JO503,JO504,JO505

PU2

U4

+5V

USB1VCC5

U506

+2.5VSB

USB2VCC5

U7

USB3VCC5


Trouble shooting

1 No Power

When power button is pressed ,nothing happens ,power indicator does not light up.

No Power

Check the following signals if they are correct using an oscilloscope

to check one at a time and test.

Battery

Is the

Notebook connected

to power (Either AC adaptor

or battery)?

Signal

No

Connect

AC adaptor

or battery

BATT

BATT_T

BATT_V

D/VMAIN

ADINP

ADINP_1

ADINP_2

ADEN#

Yes

Where

From Power Source

Problem(First use

AC to power it)

Try another known good battery

or AC adapter.

Check the following signals if they are correct using an oscilloscope to check one at a time and test.

Replace the faulty

AC adaptor or

Battery.

Yes

Power

OK?

AC Adaptor

No

Signal

D/VMAIN

PWR_VDDIN

LEARNING

+5VA

+3VA

Board-level

Troubleshooting

Replace

Motherboard


Trouble shooting

2 Battery Can not Be Charged

When the battery is installed but the battery status indicate LED display abnormal.

Battery can not Charge

Board-level

Troubleshooting

Is the

notebook connected

to power (AC adaptor)?

No

Connect

AC adaptor.

Check the following signals one at a time and

Test.

Replace

Motherboard

Yes

Signal

1. Make sure that the battery is good.

2. Make sure that the battery is installed properly.

ADINP

ADINP_[1,2]

LI_OVP

I_LIMIT

CHG_I

BATT

BATT_V

BATT_T

BATT_C

BATT_D

BATT_DEAD

Yes

Battery charge

OK?

Correct it.

No


Trouble shooting

No Display

3 No Display

There is no display on both LCD and VGA monitor after power on although the LCD and monitor is known-good.

Monitor

or LCD module

OK?

No

Replace monitor

or LCD.

Board-level

Troubleshooting

Yes

Make sure that CPU module,

DIMM memory are installed

Properly.

If 378 Port

Have error code

Yes

According error

Cord to repair

Yes

Display

OK?

Correct it.

Replace

Motherboard

No

No

1. Try another known good CPU

module, DIMM module And BIOS.

2. Remove all of I/O device (HDD,

CD-ROM…….) from motherboard

except LCD or monitor.

Check system clock and reset circuit.

1. Replace faulty part.

2. Connect the I/O device to the

M/B one at a time to find out

which part is causing the problem.

Yes

Display

OK?

To be continued

Clock and reset checking

No


Trouble shooting

VGA Controller Failure

Replace

Motherboard

4 LCD No Display or Picture Abnormal

There is no display or picture abnormal on LCD or monitor.

Board-level

Troubleshooting

1. Confirm LCD is good and check the cable

are connected properly.

2. Try another known good LCD

One of the following signals one at a time and test.

Yes

Replace faulty

LCD

Display

OK?

Signals:

No

+3VS

D/VMAIN

+LCDVCC

IXOUT2

LCD_ID[0:2]

TXOUT[0:2]+

TXOUT[0:2]-

TXOUTCLK1+

TXOUTCLK1-

ENPBLT

ENAVDD

BLADJ

Remove all the I/O device & cable from

motherboard except extended LCD.

Connect the I/O device & cable

to the M/B one at a time to find

out which part is causing the

problem.

Yes

Display

OK?

No


Trouble shooting

VGA Controller Failure

Replace

Motherboard

5 External Monitor No Display or Color Abnormal

There is no display or picture abnormal on monitor.

1. Confirm monitor is good and check the cable

are connected properly.

2. Try another known good monitor

Board-level

Troubleshooting

Yes

Replace faulty

monitor.

Display

OK?

to check the following signals one at a time and test.

No

Signals:

Remove all the I/O device & cable from

motherboard except extended monitor.

+5VS

CRT_RED

CRT_GREEN

CRT_BLUE

CRT_DDDA

CRT_HSYNC

CRT_VSYNC

CRT_DDCK

Connect the I/O device & cable

to the M/B one at a time to find

out which part is causing the

problem.

Yes

Display

OK?

No


Trouble shooting

TV Controller Failure

Display

OK?

Replace Motherboard.

6 TV Test Error

There is no display or picture abnormal on TV.

Board-level

Troubleshooting

Confirm TV is good and check the cable

are connected properly.

use an oscilloscope to check the following signals

Yes

Replace faulty cable

Signals:

No

+3VS

PCI_RESET#

TVD[0:11]

TVCLK

TVCLKR

SPCLK1

SPD1

TVHS

TVVS

TV_14M


Trouble shooting

7 Memory Test Error

Extend DDRAM is failure or system hangs up.

Memory Test Error

1. If your system installed with expansion

DDR SO-DIMM module then check

them for proper installation.

2. Make sure that your DDR SO-DIMM

sockets are OK.

3. Then try another known good DDR

SO-DIMM modules.

Board-level

Troubleshooting

Use an oscilloscope to check the signals one at a time.

Yes

Test

OK?

Replace the faulty DDR SDRAM module.

Signals:

No

+2.5V

+DDR_VREF

CKEA

CKEB

SMBDATA

SMBCLK

DDR_BAA [0,1]

DDR_BAB [0,1]

MEMADD_A[0:13]

MEMADD_B[0:13]

DDR_CLK [0,1,4,5,6,7]

DDR_CLK [0,1,4,5,6,7]#

DDR_WEA#

DDR_WEB#

CPU_CS[0:3]#

DDR_RASA#

DDR_RASB#

DDR_CASA#

DDR_CASB#

If your system host bus clock running at 266/333/400 MHZ then make sure that DDR SO-DIMM module meet require of PC 2100/2700/3200.

Replace

Motherboard

Yes

Test

OK?

Replace the faulty DDR SDRAM module.

No


Trouble shooting

Keyboard or Touch-Pad

Test Error

Replace

Motherboard

8 Keyboard (K/B) Touch-Pad (T/P) Test Error

Error message of keyboard or touch-pad failure is shown or any key does not work.

Board-level

Troubleshooting

Is K/B or

T/P cable connected to notebook

properly?

Yes

Correct it.

use an oscilloscope to check the signals one at a time and test after each replacement.

No

Signals

+3VA

+3VA_KBC

LPC_LAD[0:3]

SERIRQ

PCI_KBC_CLK

KO[0:15]

KI[0:7]

T_CLK

T_DATA

XIN

XOUT

Try another known good Keyboard

or Touch-pad.(Internal or external)

Replace the faulty

Keyboard or Touch-Pad

Yes

Test

Ok?

No


Trouble shooting

Replace

Motherboard

9 Hard Drive Test Error

Either an error message is shown, or the driver motor continues spinning, while reading data is from or

writing data is to hard drive.

Hard Driver

Test Error

Board-level

Troubleshooting

1. Check if BIOS setup is OK?

2. Try another working drive.

use an oscilloscope to check the signals one at a time

Yes

Re-boot

OK?

Replace the faulty parts.

Signals:

No

+5VS

+5VS_HD

PCI_RESET#

IDE_RST#

IDE_D_PDD[0:15]

IDE_D_PDDREQ

IDE_D_PDIOW#

IDE_D_PDIOR#

IDE_D_IORDY

IDE_D_PDDACK#

IDE_D_IRQ14

IDE_D_PDA[0:2]

IDE_D_PDCS1#

IDE_D_PDIAG

IDE_D_PDCS3#

Check the system drive for proper installation.

Yes

Re - Test

OK?

End

No


Trouble shooting

Replace

Motherboard

10 CD-ROM Drive Test Error

An error message is shown when reading data from CD-ROM drive.

CD-ROM Driver

Test Error

Board-level

Troubleshooting

1. Try another known good compact disk.

2. Check install for correctly.

use an oscilloscope to check the signals one at a time

Yes

Test

OK?

Replace the faulty parts.

Signals:

+5VS

+5VS_CDROM

PCI_RESET#

IDE_RST#

IDE_D_SDD[0:15]

IDE_D_SDDREQ

IDE_D_SDIOW#

IDE_D_SDIOR#

IDE_D_IORDY

IDE_D_SDDACK#

IDE_D_IRQ15

IDE_D_SDA[0:2]

IDE_D_SDCS1#

IDE_D_SDIAG

IDE_D_SDCS3#

No

Check the CD-ROM driver for proper installation.

Yes

Re - Test

OK?

End

No


Trouble shooting

USB Test Error

11 USB Port Test Error

An error occurs when a USB I/O device is installed.

Board-level

Troubleshooting

Check if the USB device is installed

properly.

use an oscilloscope to check the following signal one at a time

Yes

Test

OK?

Correct it

Replace

Motherboard

No

Signals:

+5V

+2.5V

+2.5V_USB

+3V

+3V_USB

+VCC_USB_0

+VCC_USB_1

+VCC_USB_2

+VCC_USB_3

USBP[0:3]+

USBP[0:3]-

USB0VCC5

USB1VCC5

USB2VCC5

USB3VCC5

USBCLK_SB

USB_OC[0:3]#

Replace another known good USB device.

Yes

Re-test

OK?

Correct it

No


Trouble shooting

PC-Card Socket

Test Error

12 PC-Card Socket Test Error

An error occurs when a PC card device is installed.

Board-level

Troubleshooting

1. Check if the PC CARD device is installed

properly.

2. Confirm PC card driver is installed ok.

use an oscilloscope to check the following signal one at a time.

Yes

Test

OK?

Replace

Motherboard

Correct it

No

Signals

+3VS

VCCA

VPPA

PCI_AD[0:31]

PCI_RESET#

PCI_C/BE#[0:3] PCI_FRAME#

PCI_IRDY#

PCI_TRDY#

PCI_DEVSEL#

PCI_STOP#

PCI_INTB#

PCI_GNT0#

PCI_SERR#

PCI_PERR# PCICLK_CARD

PCI_PAR

PCI_REQ0#

CLKRUN#

PCI_LOCK#

SERIRQ

Try another known good

PC card device.

Yes

Re-test

OK?

Change the faulty part then end.

No


Trouble shooting

Mini-PCI Socket

Test Error

13 Mini-PCI Socket Test Error

An error occurs when a PC card device is installed.

Board-level

Troubleshooting

1. Check if the Mini-PCI CARD device

is installed properly.

2. Confirm Mini-PCI driver is installed ok.

use an oscilloscope to check the following signal one at a time

Yes

Test

OK?

Replace

Motherboard

Correct it

No

Signals

Try another known good

Mini-PCI card device.

+5VS

+3VS

PCI_AD[0:31]

LPC_LAD[0:3]

PCI_C/BE#[0:3]

MINIPCI_PD

PCI_INTC#

PCI_MINI_CLK

PCI_REQ2#

PCI_IRDY#

CLKRUN#

PCI_SERR#

PCI_PERR#

PCI_INTD#

PCI_INTC#

PCI_RESET#

PCI_GNT2#

PCI_PAR

PCI_FRAME#

PCI_TRDY#

PCI_STOP#

PCI_DEVSEL#

Yes

Change the faulty part then end.

Re-test

OK?

No


Trouble shooting

Audio Drive Failure

Replace

Motherboard

14 Audio Failure

No sound from speaker after audio driver is installed.

Board-level

Troubleshooting

1. Check if speaker cables are connected properly.

2. Make sure all the drivers are installed properly.

use an oscilloscope to check the following signal one at a time

Yes

Test

OK?

Correct it.

No

Signals

1. Try another known good speaker,CD-ROM.

2. Exchange another known good Audio/touch

pad/card Read board.

+5VS

+AMP_5V

AOUT_R

AOUT_L

ROUT+

ROUT-

LOUT+

LOUT-

LINE_OUT_L

LINE_OUT_R

SPK_OFF

AVDD

MIC_INT

MIC_EXT

Yes

Re-test

OK?

Correct it.

No


Trouble shooting

Replace

Motherboard

15 LAN Test Error

An error occurs when a LAN device is installed.

LAN Test Error

Board-level

Troubleshooting

1. Check if the driver is installed properly.

2. Check if the notebook connect with the

LAN properly.

use an oscilloscope to check the following signal one at a time and

Test.

Signals

Yes

Test

OK?

Correct it.

+3V

+3V_LAN

LAN_MTXD[0:3]

LAN_MRXD[0:3]

LAN_MRXDV

LAN_MRXER

LAN_MRXC

LAN_MTXE

LAN_MTXC

LAN_DCLK

LAN_DADAIO

LAN_COL

LAN_CRS LAN_TXP

LAN_TXN

LAN_RXP

LAN_RXN

No


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