Samsung NP-R70 Troubleshooting
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Troubleshooting
4.
General
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
Replaceable unit
(2)
DDR2 RAM Module
2.5” SATA HDD
ODD – Super multi Dual layer drive or DVD Combo Drive or Etc.
Wireless LAN Module
Bluetooth Module
MDC Module
Key Board
System Fan
Touch Pad
LCD Panel
LCD Inverter
Main Board
PCMCIA Frame
Harness Cable – Touchpad FFC, MDC Cable (On board), MDC Cable (To RJ11), Bluetooth Cable,
LCD Cable, Wireless LAN Antenna 3
(FRU: Field Replaceable Unit)
types, Camera cable,
4- 1
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Troubleshooting
4.
2) Debugging Flow Chart
Start
Turn on Power
Power on?
YES
LCD display is
OK?
YES
Keyboard function is OK?
YES
HDD and ODD
recognition is OK in
CMOS ?
It is
problem.
It is
problem.
No
problem
No
problem
No
problem
No
problem
Check there is
any short in the
main board.
It is
problem.
Check LCD cable
Change Mainboard
and check it.
Change Mainboard
and check it.
NO
Check Adapter, Battery
It is
problem.
Solution : Replace the defected part or revise the connectivity.
NO
Change memory
NO
NO
Check Keyboard
connection and
replace it.
It is
problem.
Solution : Replace the defected part or revise the connectivity.
Check the connection
and change the unit.
It is
problem.
No
problem
No
problem
Check LCD
Panel Inverter.
It is
problem.
No
problem
Change Mainboard
and check it.
Change Mainboard
and check it.
YES
OS booting is OK?
YES
Touchpad
function is OK?
YES
NO
OS is corrupted ?
NO
Check Touchpad FFC
No
problem
Change Mainboard
and check it.
It is
problem.
Solution : Replace the defected part or revise the connectivity.
It is
problem.
No
problem
It is
problem.
Change
Touchpad, and
check function
No
problem
Change Mainboard
and check it.
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It is
problem.
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Troubleshooting
4.
Speaker sound is OK?
YES
Headphone,
MIC Jack
function is OK?
YES
Internal MIC
function is OK?
YES
System USB
Port function
is OK?
It is
problem.
It is
problem.
No
problem
No
problem
No
problem
NO
Check speaker
connection and
speaker cable
Change Mainboard
and check it.
Check Internal MIC unitCheck driver setting
NO
Check driver status.
Solution : Replace the defected part or revise the connectivity.
NO
Check driver setting
NO
Solution : Replace the defected part or revise the connectivity.
NO
Change Mainboard
and check it.
No
problem
Change Mainboard
and check it.
It is
problem.
Change Mainboard
and check it.
No
problem
YES
PCMCIA
function is OK?
YES
6in1card
function is OK?
YES
LAN function
is OK?
YES
Solution : Replace the defected part or revise the connectivity.
It is
problem.
NO
Check driver setting.
NO
Check driver
It is
problem.
Solution : Replace the defected part or revise the connectivity.
It is
problem.
NO
Check driver setting
No
problem
No
problem
No
problem
Check PCMCIA
frame
Change Mainboard
and check it.
Change Mainboard
and check it.
It is
problem.
No
problem
Change Mainboard and
check it.
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Troubleshooting
4.
MODEM
function is OK?
YES
Bluetooth
function is OK?
YES
WLAN function
is OK?
YES
HDMII function is
OK?
NO
NO
NO
NO
No
Check driver
problem
It is
problem.
Solution : Replace the defected part or revise the connectivity.
It is
problem.
No
problem
Check driver
No
problem
Check driver
It is
problem.
Solution : Replace the defected part or revise the connectivity.
It is
problem.
Check driver
Check 2 types MDC
cable
It is
problem.
It is
problem.
Check Bluetooth cable
Check WLAN
card
It is
problem.
No
problem
Change Mainboard
and check it.
No
problem
No
problem
No
problem
Check MDC card
It is
problem.
It is
problem.
Check Bluetooth
module
Change Mainboard
and check it.
No
problem
Change Mainboard
and check it.
No
problem
Change Mainboard
and check it.
YES
Camera
function is OK?
YES
Finish
NO
No
Check Camera
Cable connection.
It is
problem.
Solution : Replace the defected part or revise the connectivity.
problem
Check Camera
Cable
No
problem
It is
problem.
4- 4
Check Camera
module
It is
problem.
Change Mainboard
and check it.
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Troubleshooting
4.
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
2Fh Enable cache before system BIOS shadow
30h 1-4-1-1
RAM failure on data bits xxxx* of low byte of memory bus
RAM failure on data bits xxxx* of high byte of memory bus
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Troubleshooting
4.
32h Test the CPU bus-clock frequency
33h Initialize Phoenix Dispatch Manager
36h Warm start shutdown
38h Shadow system BIOS ROM
3Ah Auto size cache
3Ch
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
Advanced configuration of chipset registers
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 recov ery
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
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Troubleshooting
4.
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
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)
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Troubleshooting
4.
1) Use of Debug card.
-. Like above picture, connect debug card cable to J5 on Main board.
-. Debug code can be seen through the viewer like above picture.
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