Texas Instruments 51X 6.5.7 , 6.5.8 , 6.5.9

6.5.7 Removing/Replacing DIMM Modules

To remove and replace DIMM memory modules, use the following procedure:

1. Loosen the keyboard assembly (but do not disconnect keyboard

cables) as described in Steps 1 through 4 of Paragraph 6.5.2.

2. Using the back edge of the keyboard as a hinge, lift the front edge of

the keyboard up and lay it against the LCD assembly.

3. Push the two metal springs away from the board edge and remove the

DIMM board.

4. When installing a DIMM board, insert t he edge of the board into the

rear of its connector using a slight rocking motion at an angle to the

surface of the board.

5. Once the DIMM is fully inserted in the connector, push downward on

both sides of the board to snap it in place.

6. Reinstall the Keyboard and replace components removed in Step 1.

6.5.8 Removing and Replacing the Display Assembly

To remove the display assembly, perform the following proce dure:

1. Remove the keyboard and he at sink as described in Paragraphs 6.5.2

and 6.5.3 respectively.

2. Remove the cable cover below the display by lifting upward on the front

edge of the cover.

3. Unplug the video cables that mate with the Main Board.

4. Using a plastic stick, slide the right and left hinge covers away from

the base assembly.

5. Lay the display completely back and remove the four screws that

secure the display hinges to the base case assembly.

6. Observe cable routing and ensure that the display c ables are free

from the top case assembly; remove the display assembly.

7. Reinstallation of the Display Assembly is the reverse of Steps 1

through 6 above.

6.5.9 Removing and Replacing the Inverter Board

or Contrast Board

To remove and replace either the Inverter Board or the Contrast Board,

perform the following procedure:

Field Service 6-13

Contents

Main Page Contents Preface 1 General Description 2 Installation 3 Operating Instructions 4 Theory of Operation 5 Troubleshooting Procedures 6 Field Service ASelf Test Error Messages BPC-Doctor Diagnostics Preface Introduction Intended Audience Contents Other Manuals About the System Ordering Parts and Supplies 1 General Description 1.1 1.2 Model 510 Model 515 1.3 Configuration P/N Suffix Configuration P/N Suffix 1.4 Page Figure 1-2 Extensa 51x Series Features 1-4 General Description 1.4.1 1.4.2 1.4.3 n 1.4.3.1 Controls and Indicators ^ 1.4.4 1.4.5 Status LEDs 1.4.6 1.5 1.6 Subassemblies 1.6.1 1.6.2 1.7 Specifications Table 1-3 Extensa 51x Notebook Features Specifications Model 510 Model 515 General Description 1-13 * Weight specifications do not include AC Adapter 1.8 2 Installation 2.1 2.2 n 2.3 c n 2.3.1 Page 2.3.2 2.3.3 2.4 c 2.5 2.5.1 2.5.2 2.5.3 c 2.5.4 2.5.5 2.5.6 2.5.7 2.6 c 2.7 2.8 2.9 2.10 3 Operating Instructions n 3.1 3.2 3.2.1 3.2.2 Status LEDs 3.2.3 3.2.4 3.3 3.3.1 3.3.2 3.3.3 3.3.4 3.3.5 3.3.6 3.3.7 3.3.8 n 4 Theory of Operation 4.1 4.2 4.2.1 MAIN BOARD Figure 4-1 Notebook Functional Block Diagram 4-2 Theory of Operation 4.2.2 4.2.3 4.2.3.1 External VGA Drive Capability c 4.2.4 c 4.2.5 4.2.6 4.2.7 Page Table 4-4 Primary Battery Pack Specifications Function Specifications 4-8 Theory of Operation 5 Troubleshooting Procedures 5.1 5.2 SEE PARAGRAPH 5.3.3 Figure 5-1 Troubleshooting Flowchart 5-2 Troubleshooting 5.3 5.3.1 (EG. a lamp) to verify that voltage is present. If the voltage is OK, try replacing the AC Adapter 5-4 Troubleshooting MAIN BOARD n 5.3.3 5.3.4 5.3.5 5.3.5.1 Interactive Tests Page 5.3.5.3 Creating a Bootable Floppy Diskette n 5.3.5.4 Running PC-Doctor Page 6 Field Service c 6.1 6.2 6.2.1 c 6.2.2 6.2.3 6.2.4 6.3 c 6.4 and Assemblies 6.4.1 Page 6.4.2 Table 6-2 Base Assembly, Field-Replaceable Units (FRUs) FRU Description Page CRU Description c 6.5 c Replacement Procedures 6.5.1 Pack 6.5.2 n c 6.5.3 6.5.4 6.5.5 Assembly 6.5.6 Hard Drive Cover HDD Release Latches 6.5.7 6.5.8 6.5.9 or Contrast Board c 6.5.10 6.5.11 Control Board 6.5.12 Supply Board Assembly 6.5.13 6.5.14 Page A Self Test Error Messages A.1 Error Messages A-1 Error Message Corrective Action Table A-2 POST Checkpoint List A-2 Error Messages Error Messages A-3 A-4 Error Messages Page B PC-Doctor Diagnostics B.1 B.2 B.3 B.4 B.4.1 B.4.2 n B.4.3 B.4.4 B.4.5 B.5 B.6