Samsung q45 Service Manual troubleshooting

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4. 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)

DDRII 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 Camera Modual DMB Module(option) Keyboard System Fan TouchPad LCD Panel LCD Inverter Main Board PCMCIA Frame Harness Cable – MDC Cable, Bluetooth Cable, LCD Cable,Camera Cable and DMB Cable

2 Types of Wireless LAN Antenna

FFC – Touch Pad FFC and SATA FPC

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4. Troubleshooting

2) Debugging Flow Chart

Start

Power o n

Power on?

YES

L C D d isp la y is O K ?

YES

Keyboard function is OK ?

YES

HDD and ODD

recognition is OK

in C M O S ?

C hec k Ad ap ter an d

C hec k R A M an d

C he ck K eyb o ard

connection and

C h e ck th e co n n ectio n

and change the unit.

No problem

Check Ontop board &

Battery.

It is

problem.

Solution : Replace the defected part or revise the connectivity..

It is

problem.

No problem

rep lace it.

No problem

rep lace it.

It is

problem.

Solution : Replace the defected part or revise the connectivity..

It is

problem.

No problem

cable

It is

problem.

It is

problem.

C hec k L C D cab le.

Change M ainboard

an d ch eck it.

Change M ainboard

an d ch eck it.

No problem

C h eck th ere is any

sh o rt in th e m ain

board.

It is

problem.

It is

problem.

C h eck L C D

Panel and

In v e rt er

No problem

It is

problem.

No problem

Change M ainboard

an d ch eck it.

No problem

C h eck N o rthb rid g e

YES

OS booting is OK?

YES

Touchpad

function is OK?

YES

O S is corru p ted ?

It is

problem.

Solution : Replace the defected part or revise the connectivity.

It is

problem.

Check Touchpad

FFC (M /B)

No problem

It is

problem.

Check Touchpad

FFC (module)

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No problem

It is

problem.

Check Touchpad

In terface b o ard

It is

problem.

No problem

Change M ainboard

an d ch eck it.

No problem

Change

Touchpad, and

check function.

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4. Troubleshooting

S pe aker's sou n d is O K ?

YES

Headphone,

SPD IF, M IC

f u n c t io n is O K ?

YES

U S B is O K ?

YES

6in1card

5in 1 card

function is ok?

f u n c t io n is O K ?

YES

LAN,MODEM ,

WLAN

function is

N o problem

C h eck d riv er statu s.

It is

problem.

S o lu tio n : R ep lace th e d efected p art o r rev ise th e co n n ectiv ity.

It is

problem .

N o problem

C h eck d riv er statu s.

C h an g e M ain b oard

an d ch eck it.

C h eck d riv er statu s.

It is

problem .

S olutio n : R ep lace th e defected p art o r rev ise th e co n n ectiv ity.

It is

problem .

No problem

C h eck d riv er statu s.

C h eck sp eaker

co n n ectio n an d

sp eaker cable

It is

problem .

C hange M ainboard

an d ch eck it.

C hange M ainboard

an d ch eck it.

C hange M ainboard

an d ch eck it.

N o p r o b le m

C h an g e M ain bo ard

an d ch eck it.

YES

D M B function is ok?

YES

Bluetooth

function is OK?

YES

1394 fu n ctio n is

OK?

YES

End

C h eck d riv er statu s.

It is

problem .

S o lu tio n : R ep lace th e d efected p art o r rev ise th e co n n ectiv ity.

It is

problem.

C h eck d riv er statu s

C hange M ainboard

an d ch eck it.

No problem

C h eck D M B

m o d u le is O K ?

It is

problem.

It is

problem.

C h eck B lu eto o th cab le.

5-3

N o problem

N o problemN o problem

C hange M ainboard

an d ch eck it.

It is

problem .

C heck

Bluetooth

module.

N o problem

C hange M ainboard

an d ch eck it.

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4. 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

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4. 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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4. Troubleshooting

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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4. Troubleshooting

(3) Use of Debug card

-. Like upper picture, debug card is connected to DEBUG connector(as following) in Main board.

-. Debug code is shown at the viewer in red line.

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4. 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 cable, between the LCD

cable and the main board LCD connector and between the LCD cable and the LCD inverter.

→

Replace the LCD cable or LCD inverter.

→

CheckifthereisapartoftheLCDthatisbentorbrokenduetoimpact.

2. No picture appears on the screen.

→

Check the connection status between the LCD module and the LCD cable, between the LCD

cable and the main board LCD connector and between the LCD cable and the LCD inverter.

→

Replace the LCD cable or LCD inverter.

→

Check if the System LED of the main board is blinking. (Check if it is operating or not)

→

Checkifthememorymoduleisoutoforder.

→

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.

4. The LCD blinks while the system is in operation.

→

Check if there is a magnetic body near the touch pad button or the system or check if there is

an exterior defect to the LCD or system.

→

Replace the LCD cable or LCD inverter and check if it is out of order.

→

Check if a standard adapter is being used (R20/R21:19V/3.16A/60W).

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4. Troubleshooting

◆

Main System Troubles

5. 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. if have,change the LED

6. 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. Remove RTC cabel from RTC connector

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