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5. Troubleshooting
1)
(1) Tools used for repairing the product
System Diagnostics Disk
MS-DOS Booting Disk
System Diagnostics Card
Screwdrivers ( , )
Tweezers
Multi-meter
Oscilloscope
Logic analyzer
(2) Replaceable Units (FRU: Field Replaceable Unit)
DDR2 RAM Module
1.8" SFF HDD
Wireless LAN Module
Bluetooth Module
DMB Module
System Fan
LCD Assy
LCD Inverter
Main Board
Sub Board ? Left Sub Board, Right Sub Board
Harness Cable ? Inverter Cable
Wireless LAN Antenna
DMB Antenna Assy
FFC - Right Sub Board FFC
FPC ? Left Sub Board FPC, LED FPC, HDD FPC, LCD FPC
5. Troubleshooting
2) Debugging Flow Chart
5. Troubleshooting
5. Troubleshooting
3) System Diagnosis
(1) System Diagnostics Card
The Diagnostics Card shows the system operations during the POST (Power On Self Test) in a
2 digit hexadecimal number by connecting the cable to the 10 pin connector left side the Sodimm
slot after separating the Back Cover. The card is used to evaluate the reason for the malfunction
without disassembling the system when the system malfunctions and to test if the system operates
normally after replacing a defective FRU.
2) Debugging Code
In general, if a defect of the circuit or part is detected during the system test, the system stops at
a particular code. The error codes for each part of the system are listed in the following table.
Code Beeps POST Routine Description
02h Verify Real Mode
03h Disable Non-Maskable Interrupt
04h Get CPU type
06h Initialize system hardware
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 auto size
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
26h Enable A20 line
28h Auto size DRAM
29h Initialize POST Memory Manager
2Ah Clear 512 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
30h 1-4-1-1 RAM failure on data bits xxxx* of high byte of memory bus
5. Troubleshooting
32h Test CPU bus-clock frequency
33h Initialize Phoenix Dispatch Manager
36h Warm start shut down
38h Shadow system BIOS ROM
3Ah Auto size cache
3Ch Advanced configuration of chipset registers
3Dh Load alternate registers with CMOS values
42h Initialize interrupt vectors
45h POST device initialization
46h 2-1-2-3 Check ROM copyright notice
48h Check video configuration against CMOS
49h Initialize PCI bus and devices
4Ah Initialize all video adapters in system
4Bh Quiet Boot 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
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 UserPatch1
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
5. Troubleshooting
86h Re-initialize onboard I/O ports.
87h Configure Mothe board Configurable Devices (optional)
88h Initialize BIOS Data Area
89h Enable Non-Maskable Interrupts (NMIs)
8Ah Initialize Extended BIOS Data Area
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
che 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
B2h POST done - prepare to boot operating system
B4h 1 One short beep before boot
B5h Terminate QuietBoot (optional)
B6h Check password (optional)
B9h Prepare Boot
BAh Initialize DMI parameters
BBh Initialize PnP Option ROMs
BCh Clear parity checkers
BDh Display Multi Boot 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)
5. Troubleshooting
1)
5. Troubleshooting
4) Hardware Troubleshooting
For the procedures to disassemble each part, refer to the descriptions of Chapter 4, Disassembly and
Reassembly .
LCD Related Troubles
1. The screen is dark or the colors of the screen are distorted.
Check the connection status between the LCD module and the LCD FPC, between the LCD
FPC and the main board LCD connector and between the LCD and the LCD inverter.
Replace the LCD FPC or LCD inverter.
Check if there is a part of the LCD that is bent or broken due to impact.
2. No picture appears on the screen.
Check the connection status between the LCD module and the LCD FPC, between the LCD
FPC and the main board LCD connector and between the LCD and the LCD inverter.
Replace the LCD FPC or LCD inverter.
Check if the System LED of the main board is blinking. (Check if it is operating or not)
Check if the memory module is out of order.
Check if the Power button can be normally pressed.
3. The LCD brightness is not adjusted.
Check if the LCD inverter is out of order.
Check the BIOS version and check if the standard adapter is used.
Replace the LCD cable or LCD inverter and check if it is out of order.
5. Troubleshooting
Main System
4. The system is not turned off.
Check if the AC adapter LED is lit and if the adapter is properly connected to the system.
(Check the adapter LED)
If the AC adapter is not connected, check the charge status of the battery. Even if the battery
is charged, if the remaining battery charge is too low, the system may not be turned on.
(As the following figure shows, press the PUSH button on the battery and check the remaining
battery charge via the LEDs)
Check if there are any alien substances in the Power switch.
Replace the main board.
5. Although system power is supplied, the system does not boot or immediately turns off after being
turned on.
Since this may be a short circuit in the system, disconnect the power immediately, disassemble
the system and check if there are any conducting alien objects such as a screw inside.
Check the connection status between the CPU and the RHE.
Replace the memory module and check if it is out of order.
Reset the RTC Reset terminal next to the memory socket.
Replace the main board.
RTC Reset
After disassemble the Back cover, there is a locatio for RTC Reset beside
debug card connector. To reset CMOS data, short pad using like tweezers.
6. There is no sound from the speaker.
Check if the sound is muted after booting up Windows.
Check the connection status of the speaker cable and check if the speaker is out of order.
Check if there is a magnetic object near the speaker.
Replace the main board.
5. Troubleshooting
7. The CF card is not inserted or device recognition does not work.
This may occur when the SMT Label within the CF slot is enwrapped.
Check if there is bending pin.
8. I cannot hear sound through the headphones.
Check if the sound is muted in Windows.
Turn the volume up.
Replace the main board
9. The external microphone does not work normally.
Check the Array MIC cable connection status.
Replace the main board
10. Bluetooth . (Option)
Check the Bluetooth driver.
Check the connection of FPC between Sub board and Main board.
Check the connection of Bluetooth module and Sub board.
5. Troubleshooting
11. The HDD is not recognized.
Check the connection status of the HDD FPC cable. Replace the FPC and check if it is out of
order.
If the 'Operating system not found' message appears during the booting process even though
the HDD is recognized by CMOS, the operating system of the HDD may be corrupted or the
HDD is out of order. In this case, format the HDD and reinstall the operating system or replace
the HDD with a new one.
12. The TSP does not work or is malfunctioning.
Check the TSP calibration in Touchkit utility.
Check the connection status of the TSP I/F FPC.
Check the internal connection status of the Touch Pad I/F board or change the I/F board
Check the connection status of the Touch Pad module or change the module.
If there is no problem with the connections, replace any suspicious parts and check if they are
out of order.
13. The battery is not charged or the battery charge LED malfunctions.
Check the standard voltage of the adapter.
Check if the battery is defective.
Replace the main board.
5. Troubleshooting
14. The wireless LAN does not work normally.
Check if the WLAN driver is properly installed.
Check if the wireless LAN antenna cable is properly connected.(White : Main)
Replace the main board
When booting up the computer
15. The "Invalid System Disk. Replace the Disk and then press any key" message appears.
This message may appear when the connected USB memory or CD media does not include
bootable data.
The "Reboot and Select the proper Boot device or Insert a bootable media in the selected Boot
device and press a key" message appears.
Check if the FPC is properly connected to the hard disk drive.
Check if the hard disk drive is recognized in the BIOS SETUP.
The operating system on the hard disk drive is corrupted. Reinstall Windows.
16. The "To enter BIOS SETUP, press < >. To continue, press ." message appears.
This may happen when the BIOS settings are different from the system environment. In this
case, setup the BIOS according to your system environment.
Press < > to enter the BIOS SETUP.
Check if the date and time are correct in the BIOS SETUP.
Save the settings and restart the system.
17. The 'CMOS Checksum error message appears.
This message may appear when the CMOS battery of the main board is completely discharged.
In this case, replace the battery with a new one of the same type and set up the BIOS SETUP
according to your system environment.
18. Windows boots up in safe mode.
This may happen when Windows was not shut down normally. Therefore, shut down the system
by selecting Start > Turn Off Computer.
This may happen when the system settings have been incompletely recognized.
Run Check Disk.
5. Troubleshooting
19. I cannot boot up the computer with a USB floppy drive or from USB memory.
Check if the diskette is bootable.
This may happen when the booting priority of the device is low. In this case, change the
booting priority in the BIOS SETUP.
When shutting down the computer
20. The computer is not shut down
If Windows does not end normally, you can forcibly shut down the system by pressing the
Power button. If the power-saving feature is activated on the Power button, press the Power
button for more than 4 seconds to turn the computer off. If the computer is then turned on again,
Check Disk is automatically run.
Windows / Screen Related Problems
21. The computer hangs while running a program.
If the running program causes an error:
In Windows XP, press the windows security button, select the application program and click on
End Task in the Applications tab of the [Windows Task Manager] window.
If Windows does not respond, restart the computer. Restart the computer by pressing the Power
button.
22. No picture is displayed on the external monitor.
Press the Menu button then click Switch LCD/CRT Monitor function key and check if the screen
output is output to another display device.
Check if the hardware is out of order referring to the descriptions in the LCD related section of
the Hardware Troubleshooting.
Power-Saving Mode Related Troubles
29. Connecting a USB device to the computer in standby mode.
If a USB device is connected to the computer in standby mode, the screen may be abnormally
displayed.
You have to connect a USB device when the computer is operating normally.
30. A USB device is not working normally when the computer returns from standby mode.
In this case, separate and reconnect the USB device.
5. Troubleshooting
5) Device Settings Related Software Diagnosis
(1) Check if the drivers of each of the devices are properly installed. That is, check if there are any
yellow exclamation marks in the Device Manager.
(2) Check the device driver version and check if it is conflicting with another driver. If the driver is
not properly installed, install a new driver.
(The following figure illustrates the properties of the Internal GFx device driver).
5. Troubleshooting
(3) Check if the program is properly installed.
5. Troubleshooting
Click on the SRS Control Panel in the Control Panel and check if the SRS function works normally.
If all audio drivers and programs are properly installed, the following window will appear..
5. Troubleshooting
If there is an improperly installed driver or program the following warning message appears.
(4) HDD and ODD Related Problems
For an HDD, check if the HDD operates in Ultra DMA Mode 5 by selecting the Primary IDE
Channel in the Control Panel as follows. If it does not, check the BIOS SETUP, reinstall the
operating system or replace the HDD-FPC or HDD, if necessary.
For an ODD, check if it operates in Ultra DMA Mode 2. If it does not, check if the disc inserted
into the ODD is clean. If the disc is contaminated, the access speed may slows down. If the disc is
clean, check the BIOS SETUP, reinstall the operating system or replace the ODD-FPC or ODD, if
necessary.
5. Troubleshooting
Check if the HDD and ODD models are properly displayed. If not, check the BIOS SETUP or
replace the FPC or drive, if necessary.
(5) Other Problems
Press each corresponding button and check its operation.
The following figure illustrates the operation of the volume control button.
5. Troubleshooting
6) CPU Fan Control Problems
Voltage FFA0 FFA1 RPM Noise
2.5 32 69 4150 20
3.1 44 69 4900 23
3.4 52 69 5300 25
3.8 67 69 5800 27
> method of Fan
Measure pins 1 and 2 of the connector of the board.
> Criteria for accepting the fan operation voltage
: It is accepted if the fan operating voltage is within a +/-10% range of the specifications.
CPU Voltage Address (Hexa) (for CPU temperature)
RPM Noise
SPEED (Volt) FFA0 FFA1 CPU Sensor(on/off)
0 0 69 0 18 dBA -
2.5 32 69 4150 20 dBA 55 / 52
I 3.1 44 69 4900 23 dBA 58 / 55
3.4 52 69 5300 25 dBA 61 / 58
3.8 67 69 5800 27 dBA 64 / 61
OS Throttling 85 / 80
ACPI Notify 90
Dos Throttling 95/92
Shutdown 100
5. Troubleshooting
7)Battery Use Time
Check the following check lists for systems where the battery use time is too short to diagnose
problems.
(1) Check the battery
Check if the battery is out of order referring to the Battery check program distributed to Service
Centers and the 'Battery Check Manual' included in the 'Note-PC A/S Guide'
Criteria for each of the check lists.
5. Troubleshooting
5. Troubleshooting
5. Troubleshooting
3. Battery Capacity Table
4. Battery Check Program
5. Troubleshooting
(2) Check the battery use environment
1. Generally, the battery usage time in advertisements by notebook manufacturers refers to the
maximum battery use time. Since the system specifications and the usage environment may differ,
the user's battery usage time may differ from the advertisement even if there is no problem with
the system.
2. Conditions for the company's maximum battery use time
a. Minimum LCD brightness, base system, the wireless LAN R/F is turned off, BatteryManager-
Maximum Battery Mode
b. Measuring Tool: BatteryMark v.4.0.1
3. If a customer complains about the battery usage time, let them know that the battery usage time
may differ depending on the model specifications and the usage environment and recommend
the following usage environment for longer battery time.
a. Use the company's power-saving program, BatteryManager, and set BatteryManager to
Maximum Battery Mode.
b. LCD brightness: Set to the minimum level as long as the user does not experience
inconvenience.
c. Disable unnecessary devices
: Turn the wireless LAN R/F switch off and disable USB devices (DMB, fingerprint recognition
and Bluetooth)