Samsung NP-Q1 Troubleshooting

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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 (┼,━)
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

SENS Q1 < 5 - 1 >

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5. Troubleshooting

2) Debugging Flow Chart

Start

Poweron

Poweron?

YES

LCD displayis
OK?

YES

FrontBu ttons are OK?

YES

HDD recognition is
OKin CMOS?

No Problems

CheckAdapter& Battery

Itis
problem

Solution:Replace the defected partorrevise the connectivity

Itis
problem

NO

CheckHold SW

NO

NO

CheckSub B'd
FFC & FPC
Connection and
replace it

Itis
problem

Solution:Replace the defected partorrevise the connectivity

Checkthe connection
and change the unit

No
problems

No
problems

Itis
problem

No
problems

Checkthere is
any shortin the
main board

Itis
problem

Itis
problem

CheckRam and
replace it.

ChangeMainboard
and check it

ChangeMainboard
and check it

No Problems

No
problems

ChangeMainboard
and check it

Itis
problem

CheckLcd FPC

Itis
problem

No
problems

No
problems

CheckLCD panel
and Inverter

YES

OSBooting isOK?

YES

TSP function is
OK?

YES

SENS Q1 < 5 - 2 >

NO

NO

OSis corrupted?

Itis
problem

Solution:Replace the defected partorrevise the connectivity

CheckTSP FFC

No
problems

No
problems

ChangeMainboard
and check it

Itis
problem

CheckTouchpad
Interface board

No
problems

ChangeMainboard
and check it

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5. Troubleshooting

Speaker's sound isOK?

YES

Headphone,MIC
function is OK?

YES

Both side USBs
are OK

YES

CF card function is
OK?

Itis
problem

No
problems

Checkspeaker
connection and
speakercable

NO

Checkdriverstatus

Solution:Replace the defected partorrevise the connectivity

Itis
problem

NO

Checkdriverstatus.

NO

ChangeMainboard
and check it

NO

Checkwhether
pin is bending

NO

No
problems

CheckArray MIC
cable status.

Changedriverstatus

Itis
problem

Itis
problem

No
problems

No
problems

No
problems

ChangeMainboard
and Check it

ChangeMainboard
and it.

ChangeMainboard
and check it

YES

LAN,WLAN
function is OK?

YES

DMB Function
is OK?

YES

Bluetooth
function is OK?

YES

Allfunction is OK?

Itis
problem

Solution:Replace the defected partorrevise the connectivity

Itis
problem

NO

Checkdriverstatus

NO

Checkdriverstatus

Itis
problem

No
problems

No
problems

ChangeMainboard
and check it

CheckDMB Module

Solution:Replace the defected partorrevise the connectivity

Itis
problem

No

NO

NO

Checkdriverstats

ChangeMainboard
and Check it

problems

CheckBluetooth cable

Itis
problem

Itis
problem

Itis
problem

No
problems

No
problems

CheckDMB
AntennaCable
& Antenna

Itis
problem

Itis
problem

CheckBluetooth
module

No
problems

No
problems

ChangeMainboard
and Checkjit

ChangeMainboard
and check it

YES

End

SENS Q1 < 5 - 3 >

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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

SENS Q1 < 5 - 4 >

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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

SENS Q1 < 5 - 5 >

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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)

SENS Q1 < 5 - 6 >

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5. Troubleshooting

1) Use ofDebug card

-Before use debug card,change the cable ofdebug card.

ⓐ

ⓑ

-Remove cable b from normaldebug card,add anothercable a.(Need 2 cable a)

-.Like upperpicture,debug card is connected to J12 below DM B M odule.

ⓐ

ⓐ

-.Debug code is shown atthe viewer in red line.

SENS Q1 < 5 - 7 >

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5. Troubleshooting

4) Hardware Troubleshooting

For the procedures to disassemble each part, refer to the descriptions of Chapter 4,“Disassembly and
Reassembly”.

Before troubleshoot,checkHold SW status.

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.

→

SENS Q1 < 5 - 8 >