07_Troubleshooting.pdf
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5. Troubleshooting
1) General
(1) Tools used for repairing the product
System Diagnostics Disk
MS-DOS Booting Disk
System Diagnostics Card
Screwdrivers (
ȑ
,
Ȓ
)
Tweezers
Multi-meter
Oscilloscope
Logic Analyzer
(2) Replaceable Units (FRU: Field Replaceable Unit)
DDRII RAM Module
2.5” PATA / SATA HDD
ODD – Super multi Dual
layer drive or DVD Combo Drive or Etc.
Wireless LAN Module
Bluetooth Module
MDC Module
DMB Module (Optional)
Keyboard
System Fan
Touch Pad
LCD Panel
LCD Inverter
Main Board
PCMCIA Frame
SubBoard–Ontopboard
Harness Cable – Ontop Cable, MDC Cable, Bluetooth Cable, LCD Cable and
2 Types of Wireless LAN Antenna
FFC – Touch Pad FFC
FPC – PATA / SATA HDD FPC
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5. Troubleshooting
2) Debugging Flow Chart
Start
Power on
No problem
No problem
No problem
Check t here is any
short in the main
board.
Power on?
Check Adapt er and
Battery.
Check Ontop board &
cable
Change Mainboard
and check it .
It is
problem.
It is
problem.
It is
problem.
YES
It is
problem.
Solut ion : Replace t he def ect ed part or rev ise t he connect iv it y..
It is
problem.
It is
problem.
It is
problem.
No problem
No problem
No problem
No problem
NO
Check LCD
Panel and
Inverter
Check RAM and
replace it .
Check LCD cable.
LCD display is OK ?
Check Nort hbridge
YES
No problem
NO
Check Keyboard
connect ion and
replace it .
Change Mainboard
and check it .
Keyboard function is OK?
It is
problem.
YES
Solut ion : Replace t he def ect ed part or rev ise t he connect iv it y..
It is
problem.
No problem
NO
HDD and ODD
recognition is OK
in CMOS ?
Check t he connect ion
and change the unit.
Change Mainboard
and check it .
YES
NO
No problem
Change M ainboard
and check it .
OS booting is OK?
OS is corrupted ?
It is
problem.
YES
It is
problem.
Solut ion : Replace t he def ect ed part or rev ise t he connect iv it y.
It is
problem.
It is
problem.
It is
problem.
No problem
No problem
No problem
No problem
NO
Change
Touchpad, and
check f unct ion.
Check Touchpad
Int erf ace board
Touchpad
function is OK?
Check Touchpad
FFC (M/B)
Check Touchpad
FFC (module)
YES
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5. Troubleshooting
No problem
No problem
NO
Check speaker
Speaker's sound is OK?
Check driv er stat us.
Change M ainboard
and check it.
connect ion and
speaker cable
It is
problem.
It is
problem.
YES
Solut ion : Replace t he def ect ed part or rev ise t he connect iv it y.
It is
problem.
No problem
Headphone,
SPDIF, MIC
function is OK?
NO
Check driv er st at us.
Change M ainboard
and check it .
YES
NO
USB is OK?
Change M ainboard
and check it .
YES
NO
5in1 card
function is OK?
Change M ainboard
and check it .
Check driv er stat us.
It is
problem.
YES
Solut ion : Replace t he def ect ed part or rev ise t he connect iv it y.
It is
problem.
No problem
NO
LAN,MODEM,
WLAN
function is
OK?
Check driv er st atus.
Change M ainboard
and check it .
YES
No problem
No problem
NO
Check driv er st atus.
Check DM B
module is OK?
Change M ainboard
and check it .
DMB function is ok?
It is
problem.
YES
It is
problem.
Solut ion : Replace the def ected part or rev ise t he connectiv ity.
It is
problem.
It is
problem.
It is
problem.
No problem
No problem
No problem
NO
Check
Bluetooth
module.
Bluetooth
function is OK?
Check driv er st at us
Check Bluet oot h cable.
Change M ainboard
and check it .
YES
NO
1394 f unction is
OK?
Change M ainboard
and check it .
YES
End
- This Document can not be used without Samsung's authorization -
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 below the PCMCIA slot
after separating the Top part. 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 Controlle
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
32h
Test the CPU bus-clock frequency
33h
Initialize Phoenix Dispatch Manager
36h
Warm start shutdown
- This Document can not be used without Samsung's authorization -
5. Troubleshooting
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 the ROM copyright notice
48h
Check the video configuration against CMOS
49h
Initialize PCI bus and devices
4Ah
Initialize all video adapters on the system
4Bh
Quiet Boot start (optional)
4Ch
Shadow video BIOS ROM
4Eh
Display the BIOS copyright notice
50h
Display the CPU type and speed
51h
Initialize EISA board
52h
Test the keyboard
54h
Set key click if enabled
58h
2-2-3-1
Test for unexpected interrupts
59h
Initialize POST display service
5Ah
Display the 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
86h
Re-initialize onboard I/O ports.
87h
Configure Mothe board Configurable Devices
88h
Initialize BIOS Data Area
89h
Enable Non-Maskable Interrupts (NMIs)
8Ah
Initialize Extended BIOS Data Area
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