LG Electronics LW70, LW60 service manual Ch1. Service information „ Safety inspection guide

Page 8

Ch1. Service information

„Safety inspection guide

The purpose of this inspection guide is to assist you in identifying potentially unsafe conditions.

As each machine was designed and built, required safety items were installed to protect users and service personnel from injury. This guide addresses only those items. You should use good judgment to identify potential safety hazards due to attachment of non-LG features or options not covered by this inspection guide.

If any unsafe conditions are present, you must determine how serious the apparent hazard could be and whether you can continue without first correcting the problem.

·Consider these conditions and the safety hazards they present

1.Electrical hazards, especially primary power (primary voltage on the frame can cause serious or fatal electrical shock)

2.Mechanical hazards, such as loose or missing hardware

Refer to the following checklist and begin the checks with the power off, and the power cord disconnected.

·Checklist

1.Check exterior covers for damage (loose, broken, or sharp edges)

2.Power off the computer. Disconnect the power cord.

3.Check the power cord for :

a.A third-wire ground connector in good condition. Use a meter to measure third-wire ground continuity for 0.1 or less between the external ground pin and frame ground.

b.The power cord should be the type specified in the parts list.

c.Insulation must not be frayed or worn.

4.Remove the cover.

5.Check for any obvious non-LG alterations. Use good judgment as to the safety of any non-LG alterations.

6.Check inside the unit for any obvious unsafe conditions, such as metal filings, contamination, water or other liquids, or signs of fire or smoke damage.

7.Check for worn, frayed, or pinched cables.

8.Check that the power-supply cover fasteners (screw or rivets) have not been removed or tampered with.

7

Image 8
Contents LW60/70 LG Electronics Page Ch1. Service information „ Strategy for replacing a hard-disk driveCh1. 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 informationCh1. Service information Read this first „ What to do firstFollowings are not covered under warranty Ch2. Locations „ Front viewCh2. Locations „ Front view „ Right view 15.4 Ch2. Locations „ Rear view 15.4„ Left view 15.4 „ Specification Ch3. System information„ System Block Diagram GM SystemPage53HUNTER-W Ch3. System information „ Fn key combinations Fn +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 System TimeCh3. 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 Then pull the HDD assembly out in the direction shown below Ch5. Removing and replacing a part Keyboard Ch5. Removing and replacing a part Ch5. Removing and replacing a part Bmdcmdc Modem Card Ch5. Removing and replacing a part Optical Disk Drive 1SZZBA4019FCh5. Removing and replacing a part Keyboard Deck Disconnect cable Disassemble the KBD Deck Assy Ch5. Removing and replacing a part Fan Assembly Ch5. Removing and replacing a part Wireless LAN Card Ch5. Removing and replacing a part Display Module Ch5. Removing and replacing a part 1SZZBA4097A Ch5. Removing and replacing a part Ch5. Removing and replacing a part Speaker Disconnect connector and remove Speaker Ch5. Removing and replacing a part Sub Board Ch5. Removing and replacing a part Main Board Remove Main Board 1SZZBA4080G Remove LCD Hook 1SZZBA4080F Ch5. Removing and replacing a part Remove LCD panel 1SZZBA4017A Ch5. Removing and replacing a part Remove Wlan Antenna Ch5. Removing and replacing a part Battery Pack Ch5. Removing and replacing a part Hard Disk Drive Ch5. Removing and replacing a part Ch5. Removing and replacing a part Keyboard Ch5. Removing and replacing a part Ch5. Removing and replacing a part Optical Disk Drive Ch5. Removing and replacing a part Wireless LAN Card Ch5. Removing and replacing a part Bmdcmdc Modem Card M2.0 X L3.0 Remove 7 screws FRU No Specification Qty Ch5. Removing and replacing a part Ch5. Removing and replacing a part Fan Assembly Ch5. Removing and replacing a part Display Module Ch5. Removing and replacing a part 1SZZBA4097A Ch5. Removing and replacing a part Ch5. Removing and replacing a part Speaker Disconnect connector and remove Speaker Ch5. Removing and replacing a part Sub Board Ch5. Removing and replacing a part Woofer Disconnect connector and remove Woofer Ch5. Removing and replacing a part Main Board 1SZZBZ4002B M2.5 X L6.0 Remove LCD Hook M2.0 X L3.0 1SZZBA4080G Remove LCD panel 1SZZBA4017A Ch5. Removing and replacing a part Remove Wlan Antenna Part lists Ch6. Part listsHWL18 400MHZ DDR2 Sdram with 32MX16 NMEM1 GIMMR00007A 100 101 102 103 104 105 HWL29 HWL12 HWL31 HWL11 HWL30 HWL10 HWL07 HWL27 HWL09 HWL22 HWL33 HWM20 HWM27 NRUB1 HWL32 HWM22 HWC08 HTM05 HWC07 HWM25 HWM24 HWM26 HTA04 HWM23 HWM31 HWM29 HWM30 HWM33 HWD02 HWM11HWM22 HWM06 HWM05 HWM23 HWM07 HWM04 HWC09 HTA07 HWM34 HWM08 HWM09 HWC04 NMEM1 HWC11 HWC13