Samsung 07 Troubleshooting free download

File name 07_Troubleshooting.pdf

. This Document can not be used without Samsung's authorization. 5. TROUBLESHOOTING 5-1 General Information 1) Troubleshooting Tools System Diagnosis Disk MS-DOS System Disk System Diagnostic Card (+),(-) Screwdriver Tweezers Multimeter Oscilloscope Logic Analyzer 2) Field Replaceable Unit Memory Module 1.8" HDD Wireless LAN Module MDC Module 5-IN-1 Board Keyboard Touchpad LCD LCD I/F Cable LCD Inverter HDD FPC LED/Touchpad FPC MAIN Board MDC Cable 5-2 System Diagnosis I 1) System Diagnostic Card The Diagnostic Card is inserted into the MINI PCI slot and displays the system oper ating status during the POST (Power On Self Test) in a 2-digit hexadecimal value. SENS R55 5-1 . This Document can not be used without Samsung's authorization. 5. TROUBLESHOOTING The Diagnostic Card is used to evaluate the cause(s) of any abnormal operations of the system without disassembling the system or to test the system after the replacement of the FRU. 2) Debugging Codes In general, if a fault of a circuit or part is detected during the system test, the syst em stops with a code. The debugging codes for system board faults are listed below. CODE Description Check Item 02 Check CPU Real Mode Change 03 Disable Non-Maskable Interrupts (NMI) 04 Read the CPU type from the CPU internal Check that the CPU is supported/Replace the register. board. 06 Initialize System Hardware (DMA,RTC) 08 Set the default values for the Chipset Register. 09 Set the Port Flag 0A Initialize the CPU Register Initialization 0B Enable the CPU Cache 0C Set the default values for the CPU Cache Register. 0E Initialize I/O 0F Initialize the Storage Media 10 Initialize the Power Manager 11 Initialize the Register 13 Initialize PCI Bus Master Reset 14 Initialize the Keyboard Controller 16 Check the BIOS ROM Checksum Check the BIOS ROM/Check after BIOS update 18 Initialize the 8254 System Timer 1A Initialize the 8237 DMA Controller 20 Check the DRAM Refresh Operation 22 Check the 8427 Keyboard Controller 28 Check the DRAM Memory SENS R55 5-2 . This Document can not be used without Samsung's authorization. 5. TROUBLESHOOTING CODE Description Check Item 32 Measure the CPU speed 34 Check the CMOS value 38 Copy the BIOS information to memory 3A Check the CACHE size 3C Set the initial value for the Chipset Register Remove the RTC battery and check if the accord