LG Electronics LS70 service manual DMA test failed System board 02F6

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Ch4. Symptom-to-part index

Symptom / Error		FRU or action, in sequence

0251	Replace the backup battery and run BIOS Setup Utility
System CMOS checksum bad	to reset the time and date.
– System CMOS checksum is not correct.
– Default configuration used.

0252	Reset the password by running BIOS Setup Utility.
Password checksum bad – The password is
cleared.

0260	1.	Replace the backup battery and run BIOS
System timer error		Setup Utility to reset the time and date.
	2.	System board.

0271	Run BIOS Setup Utility to reset the time and date.
Check date and time settings – Date and time
error.

0280	1. Load “Setup Default” in BIOS Setup Utility.
Previous boot incomplete	2.	DIMM.
- Default configuration used	3.	System board.

0281: Memory Size found by POST differed	Load Setup Defaults in BIOS Setup Utility.
from EISA CMOS

02B0	Set up the diskette type in BIOS Setup Utility.
Diskette drive A error

02B1	Set up the diskette type in BIOS Setup Utility.
Diskette drive B error

02B2	1.	Floppy diskette drive.
Incorrect drive A type – Floppy diskette drive	2.	External FDD cable.
error	3.	I/O card.

02B3	1.	Floppy diskette drive.
Incorrect Drive B type	2.	External FDD cable.
	3.	I/O card.

02D0	1. Load “Setup Default” in BIOS Setup Utility.
System cache error – Cache disabled	2.	System board.
(RAM cache failed and BIOS disabled)

02F4	1. Load “Setup Default” in BIOS Setup Utility.
EISA CMOS not writable	2.	Replace the backup battery.
	3.	System board.

02F5	1. DIMM
DMA test failed	2.	System board

02F6	1. DIMM
Software NMI failed	2.	System board

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Contents LS70 LG Electronics Page „ Strategy for replacing a hard-disk drive Ch1. Service informationBefore replacing parts Ch1. Service information Safety notices Ch1. Service information Safety information „ General safety Ch1. Service information „ Electrical safety Ch1. Service information Ch1. Service information „ Safety inspection guide „ Grounding requirements Ch1. Service information Laser compliance statement Backup Standby RTC battery safety informationImportant Notes Ch1. Service information Read this first„ What to do first Followings are not covered under warranty Ch2. Locations „ Front viewCh2. Locations „ Rear view „ Left view„ Right view Security key hole Kensington Lock„ Specification Ch3. System informationCh3. System information „ System Block Diagram Ch3. System information „ Fn key combinations Ch3. System information „ Status indicators System status indicators show the status of the computerCh3. System information „ Bios Flash Ch3. System information „ How to update flash ROM in Windows Ch3. System information Ch3. System information „ Bios Setup Ch3. System information „ Using the keys Ch3. System information „ Main menu Ch3. System information „ Advanced menu „ Security menuCh3. System information „ Boot menu „ Exit menuCh4. Symptom-to-part index „ Power system checkoutCh4. Symptom-to-part index Ch4. Symptom-to-part index Terminal Voltage V dc Ground Ch4. Symptom-to-part index „ Numeric error codes Symptom / Error FRU or action, in sequenceDMA test failed System board 02F6 02F7 Ch4. Symptom-to-part index „ Error message Ch4. Symptom-to-part index „ LCD-related symptoms Ch4. Symptom-to-part index „ Indeterminate problems Removing and replacing a part FRU Ch5. Removing and replacing a partCh5. Removing and replacing a part Battery Pack Ch5. Removing and replacing a part Hard Disk Drive Ch5. Removing and replacing a part Wireless LAN Card Ch5. Removing and replacing a part Keyboard 1SZZBA4097ADisconnect Keyboard Connector and remove Keyboard Ch5. Removing and replacing a part Retainer Disconnect Retainer Connector and remove Retainer Ch5. Removing and replacing a part Keyboard Plate Ch5. Removing and replacing a part FAN Assembly Ch5. Removing and replacing a part Hinge Cover Ch5. Removing and replacing a part Display Module Remove Display Module Ch5. Removing and replacing a part 110 0 Key Deck 1SZZBZ4014A Ch5. Removing and replacing a part Optical Disk Drive Ch5. Removing and replacing a part Audio Board Ch5. Removing and replacing a part HDD Cover Block L Ch5. Removing and replacing a part Hinge Frame L Ch5. Removing and replacing a part Main Board Ch5. Removing and replacing a part Ch5. Removing and replacing a part Ch5. Removing and replacing a part Video Board 1SZZBA4080F Ch5. Removing and replacing a part 1SZZBZ3002W Ch5. Removing and replacing a part 1SZZBA4017A Part lists Ch6. Part lists400MHZ DDR2 Sdram with 32MX16 NMEM1 Common Bezel for Bran NB-PC HTA05 HFC07 Oversea EXPORT, Slim Type HFC11 HFD03 HFM20 Exploded View HUNTER-FULL 15 Inch Cover Rear AssyExploded View KUBNKM095A Alps Inverter DAC-08B073 Delta HUNTER-TL 15 Inch OZ1060SKUBNKM094A Alps Inverter DAC-08B072 Delta InverterExploded View ISP Style B WVA ISP Style B WVA P3 PlantWVA ISP Style B PLATE, Display Rear Hunter 150 FullCase Assy, Front Exploded View HYS64T32000HDL-5-A Infineon 200P Sodimm BK DDR2 Sdram with 32MX1664MX64 400MHZ DDR2 Sdram with 32MX16 32MX64 533MHZ DDR2 Sdram with 32MX16RH80536GE0362M LG Intel 478P Ufcpga Tray NT CPU PENTIUM-M N HUNTER-FULL 15 Inch Bottom Case Assy 150FHUNTER-FULL 15 Inch MG Hinge ,FRAME Left HUNTER-FULL 15 Inch Hinge Frame Assy RightExploded View HUNTER-WIDE 15.4 Inch HDD SUS 17.1W, 15F MHT2040AT PL Fujitsu 40GB Eide Inner ZEBRA/MACKINLEY/K2HTS424040M9AT00 Hgst 40GB Eide Inner Mckinly 4200RPM MHT2060AT PL Fujitsu 60GB Eide Inner ZEBRA/MCKINLEY/K2FAN Assembly HUNTER-WIDE 15.4 Inch Pcabs HDD BlockExploded View HUNTER-FULL 15 Inch KBD Deck Total Assy HUNTER-FULL Plate KBD AssyCentrino Label NT 252352-002 Intel POP Label LS70 PM IPS for DomesticHUNTER-FULL 15 Inch Speaker Total Assy HUNTER-WIDE 15.4 Inch Pcabs KBD Deck BUTTON, TouchpadExploded View HUNTER-F LG-IBM OKI Korea KEY HUNTER-F LG-IBM OKI English KEYTaiwan Hunter F OKI 87KEY Russian Hunter F OKI 86KEYExploded View 4800MAH 3S-2P LGC LI-ION Cylinderical HUNTER-ALL Cell LGC PF8B1CIJ10A-060 Longwell Gost 1830MM 3PIN CONN. Black SP-022+IS-034+H05VV-F3G I-SHENG Gost 1800MM 3P CONN. BlackPL8B1S3J10A-060 Longwell SAA 1830MM 3PIN Conn Black SP-502B+H05VV-F+IS-034 I-SHENG SAA 1830MM 3PIN CONN. BlackID Label Hunter 15T China from Lgeks ID Label Hunter 15T Lgeks Made in ChinaID Label Hunter 15T China from Lgept Exploded View Screw M2.5 * L8.0 hinge