Trouble Shooting

1
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
2
1 No power definition
Base on ACPI Spec. We define the no power as
while we press the power button, the system cant
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
  cant 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 cant 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
3
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
PU502
PU6,PD4,PR20
PD503
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, PD6PD9,PQ508,PQ507,PQ509, PQ510,
PL508,PL509
U517
VCCA
PD504
PU12
ADINP
D/VMAIN
CPU_CORE
2.5VDDA
PU10,PQ13,PD5
PL503,PQ503,PL506PR507,JO3,JO4,PJO2
PF502,PL504 PU4,PD2
PU8 PD507PU501 PL507PR511PD3
1.2VLDTA
3VSB
L513
PF1 PL1 PL2 PQ6 PQ7
(Charge)
3VS_USB
L25
PU1
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,P
R96 PD12,JO503,JO504,JO505
PU2
U4
5V
USB1VCC5
U506
2.5VSB
USB2VCC5
U7
USB3VCC5
4
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
5
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
6
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
7
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_ID02 TXOUT02
TXOUT02- 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
8
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
9
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 TVD011 TVCLK TVCLKR SPCLK1 SPD1
TVHS TVVS TV_14M
10
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_A013
MEMADD_B013 DDR_CLK 0,1,4,5,6,7 DDR_CLK
0,1,4,5,6,7
DDR_WEA DDR_WEB CPU_CS03 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
11
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_LAD03 SERIRQ PCI_KBC_CLK KO0
15 KI07 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
12
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_PDD015 I
DE_D_PDDREQ IDE_D_PDIOW IDE_D_PDIOR IDE_D_IORDY
IDE_D_PDDACK IDE_D_IRQ14 IDE_D_PDA02
IDE_D_PDCS1 IDE_D_PDIAG IDE_D_PDCS3
Check the system drive for proper installation.
Yes
Re - Test OK?
End
No
13
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_SDD015
IDE_D_SDDREQ IDE_D_SDIOW IDE_D_SDIOR IDE_D_IOR
DY IDE_D_SDDACK IDE_D_IRQ15 IDE_D_SDA02
IDE_D_SDCS1 IDE_D_SDIAG IDE_D_SDCS3
No
Check the CD-ROM driver for proper installation.
Yes
Re - Test OK?
End
No
14
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_US
B_1 VCC_USB_2 VCC_USB_3 USBP03 USBP03-
USB0VCC5 USB1VCC5 USB2VCC5 USB3VCC5 USBCLK_SB USB_
OC03
Replace another known good USB device.
Yes
Re-test OK?
Correct it
No
15
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_AD031 PCI_RESET PCI_C/BE0
3 PCI_FRAME PCI_IRDY PCI_TRDY PCI_DEVSEL PC
I_STOP
PCI_INTB PCI_GNT0 PCI_SERR PCI_PERR
PCICLK_CARD PCI_PAR PCI_REQ0 CLKRUN PCI_LOCK SE
RIRQ
Try another known good PC card device.
Yes
Re-test OK?
Change the faulty part then end.
No
16
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_AD031 LPC_LAD03 PCI_C/BE03
MINIPCI_PD PCI_INTC PCI_MINI_CLK PCI_REQ2 PCI_I
RDY 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
17
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
Test OK?
Yes
Correct it.
No
Signals
1. Try another known good speaker,CD-ROM. 2.
Exchange another known good Audio/touch
pad/card Read board.
MIC_INT MIC_EXT
5VS AMP_5V AOUT_R AOUT_L ROUT ROUT- LOUT
LOUT- LINE_OUT_L LINE_OUT_R SPK_OFF AVDD
Yes
Re-test OK?
Correct it.
No
18
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.
LAN_CRS LAN_TXP LAN_TXN LAN_RXP LAN_RXN
3V 3V_LAN LAN_MTXD03 LAN_MRXD03 LAN_MRXDV
LAN_MRXER LAN_MRXC LAN_MTXE LAN_MTXC LAN_DCLK LAN_
DADAIO LAN_COL
No