Texas Instruments 51X 3.3.4 , 3.3.5 , 3.3.6

3.3.4 Responding to Low Battery Conditions

The computer generally will notify you when you are reaching a low battery

condition by the following actions:

•Four short beeps per minute (unless battery warning is disabled)

•The battery low warning is automatically disabled when th e AC Adapter

is installed on the notebook, regardless of the charge condition of the

battery pack.

•If the AC adapter is not plugged in within three minutes of a detected

battery low condition, the notebook enters Suspend mode (if low battery

suspend is specified in setup). When th e notebook enters Suspend

mode, it issues one beep, saves contents of RAM to disk and powers

down the unit.

•The Notebook returns to the normal operating mode when the power

switch is activated. The unit then recovers RAM information from the

hard drive and restores the unit to its previous "On" condition.

3.3.5 Minimizing Power Usage

The following actions can minimize power usage and protect your work

during the critical minutes before you shut the system down or replace on

the battery packs with a fully charged pack:

•Press Ctrl-Standby to shut off the alarm (if its enabled)

•Save RAM Disk (if using RAM Disk feature)

•Press Standby/ Suspend button to put the computer in

Standby/Suspend mode whenever you a r e not actively using the

computer. This will save all your work and remember the application

and file you were previously using when you return to the On condition.

•Power down the system if you do not need the computer

3.3.6 Recharging the Battery Packs

The battery pack may also be charged in the notebook as follows:

1. Install the battery pack in your computer (if not already installed).

2. Connect the AC Adapter as described in Section 2.

3. To fully charge the battery pack, leave it charging in the Note book

until the Charge LED extinguishes (approximately 90 minutes).

Operating Instructions 3-5

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