Page 2 - Address all correspondence regarding orders to:; Texas Instruments Incorporated
Copyright (©) 1996 Texas Instruments Incorporated All Rights Reserved — Printed in U.S.A. Extensa 51x Series Notebook Computers Maintenance Manual TI Part No. 9811755-0001 Original Issue: April 1996 Changes may be made periodically to the information in this publication.Such changes will be incorpor...
Page 3 - Preface; Contents; iii
Contents Preface 1 General Description 1.1 . . . . Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.2 . . . . Product Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 1.3 . . . . International Product Versions . . . . . . . . . . . . . . . . . 1-2 1....
Page 4 - iv
2.5.2 . . . Installing External Parallel Printer . . . . . . . . . . . . 2-7 2.5.3 . . . Installing External Serial Port Device . . . . . . . . . 2-8 2.5.4 . . . Installing External VGA Monitor. . . . . . . . . . . . . . 2-9 2.5.5 . . . Installing External Microphone . . . . . . . . . . . . . . 2-10...
Page 7 - Introduction
Preface Introduction This manual provides installation, operation and servicing data for theExtensa 51x Series Notebook Computers. Intended Audience This manual is primarily intended for use by qualified service techniciansbut contains information useful to non-technical users. Contents This manua...
Page 8 - Other Manuals About the System; Extensa Series Notebook Computer User’s Reference Manual; Ordering Parts and Supplies; viii
Other Manuals About the System The following documents provide additional information related to theExtensa 51x Series: • Extensa Series Notebook Computer User’s Reference Manual contains reference information regarding the Extensa Series NotebookComputer software including the TI custom utilities. ...
Page 9 - 1x Series of Notebook Computers (Figure; Product Models; Figure1-1 Extensa 51x Series Notebook Computer; General Description
1 General Description 1.1 Introduction This manual contains field and factory level servicing information for theTexas Instruments Extensa 51x Series of Notebook Computers (Figure 1-1). This section provides a general overview and specifications for theExtensa 51x Series Notebook Computers. 1.2 Pr...
Page 10 - Table 1-1 Extensa 51x Series Notebook Computers; International Product Versions; Table 1-2 Notebook Domestic/International Configurations; Configuration; Product Overview; processor and Windows 95 Operating
Table 1-1 Extensa 51x Series Notebook Computers Model 510 Model 515 • U.S. VersionWindows 95 or Windowsfor Workgroups Windows 95 Plus MicrosoftWorks, Quicken SE, LotusOrganizer, and MicrosoftEntertainment Pack • Non U.S. VersionsWindows 95 1.3 International Product Versions The Extensa 51x Series No...
Page 12 - Figure 1-2 Extensa 51x Series Features
TouchpadPointing Device TouchpadSelect Buttons Power On/Off Button Cover ReleaseButton Five StatusLEDs Primary Battery Pack(Accessible from Right Side) Hard Drive(Accessible from Underneath) SetupButton Standby/SuspendButton Type I /11 or IIIPCMCIA Slot Primary Battery Cover Hard DriveCover Floppy D...
Page 13 - External Ports; -Pin PS/2 Port to attach an external Keyboard or Mouse; Figure 1-3 Notebook External Ports
1.4.1 External Ports As shown in Figure 1-3, the notebook computer contains the followingexternal ports: • 9-Pin Serial Port for attaching any RS-232 type serial device to theNotebook • 25-Pin Parallel Port for attaching bidirectional parallel devices • Audio Line-In, Line-Out, and Microphone-In • 1...
Page 14 - Fn; Figure1-4 Extensa Touchpad
1.4.2 Touchpad Pointing Device All members of the Extensa family feature a built-in touchpad pointingdevice located near the center of the keyboard palmrest. With light pressure,the cursor can quickly be positioned to the desired point; a quick double tapon the touchpad and you have selected an obje...
Page 15 - Note
• "Inverted T" Cursor Control Key layout The notebook keyboard is available in the following versions: • U.S. English Keyboard, TI Part No. 9811398-0001- This version (alsoknown as the domestic version) is generally used in the United Statesand Canada. • International versions include: • Uni...
Page 16 - Controls and Indicators
1.4.3.1 Controls and Indicators As shown in Figure 1-6, Extensa Series Notebook Computers contain a setof three buttons (switches) and five LED displays just above the keyboardincluding: • Power, Setup, and Standby/Suspend Buttons (Switches) • Sleep Mode Indicator. This LED lights when the notebook ...
Page 17 - Figure1-6 Extensa Series Controls and Indicators
1.4.4 Standard Power Features Notebook power for the Extensa 51x Series Notebook Computers is providedby an AC Adapter and a rechargeable 10.8 V, 2400 mAh Duracell DR35nickel metal hydride (NiMH) battery pack that installs in a bay near thefront of the notebook (right side). All members of the Exten...
Page 18 - Notebook Expansion Capabilities; Standard Test Features
• Microsoft Works • Quicken SE • Lotus Organizer • Microsoft Entertainment Pack No. 4 1.4.6 Notebook Expansion Capabilities Expansion capabilities built into the Extensa notebook series include: • User installable expansion RAM memory (to a maximum of 40 MB);notebook accepts either fastpage mode or ...
Page 19 - Cover-Display Assembly; LCD Assembly; B o t t o m V ie w; Figure 1-7 Notebook Assemblies
1.6.1 Cover-Display Assembly The Cover -Display Assembly contains the LCD screen and associated highvoltage power supply and video circuitry. The Cover -Display Assemblycontains several field-replaceable components including: • LCD Assembly • Cable Assemblies • Inverter Board • Contrast Board F l o ...
Page 20 - System Base Assembly; Extensa 51x Series Notebook
The Display Assembly attaches to the System Base Assembly through fourtop mounted screws. 1.6.2 System Base Assembly As shown in Figure 1-7, the majority of the notebook’s field-replaceableunits (FRUs) are located in the system base assembly. These FRUs include: • Main Board Assembly • Hard Disk Dri...
Page 21 - Table 1-3 Extensa 51x Notebook Features; Specifications; * Weight specifications do not include AC Adapter
Table 1-3 Extensa 51x Notebook Features Specifications Model 510 Model 515 Memory: Standard : 8 MB 8 MB Maximum 40 MB 40 MB Display LCD Type: 10.4" Dual Scan Color 10.4" Dual Scan Color Simultaneous LCD/Ext.VGA Yes Yes Video RAM Size: 1 MB 1 MB Video Bus VLBUS with Graphics Accelerator VLBUS...
Page 22 - Agency Approvals; All Extensa 51x Series products
1.8 Agency Approvals All Extensa 51x Series products meet the following standards: • Underwriter’s Lab (UL) Standard 1950 (safety) • Underwriter’s Lab (UL), CN Listed (C22.2 No. 950) (safety) • EN60950, TUV Rheinland (safety) • FCC CFR 47, Part 15, Subpart J, FCC Level B (EMI/RFI ) • Canadian Depart...
Page 23 - Installation
2 Installation 2.1 Introduction This section contains unpacking and preparation for use instructions forthe Extensa 51x Series Notebook Computers. 2.2 Unpacking Instructions The packaging diagram for the notebook computer is shown in Figure 2-1.Unpack the computer using the following instructions: 1...
Page 24 - Figure 2-1 Installing Additional Memory
3. Release the Keyboard by pulling the keyboard release tabs forward (tabs are located underneath the Ctrl and right arrow keys). 4. Disengage the Keyboard using a straight blade screwdriver and gently lifting up along the front edge of the keyboard. 5. Using the back edge of the keyboard as a hinge...
Page 25 - Installing PCMCIA Options; Open the PCMCIA compartment cover on the left side of the notebook.; Figure 2-2 Installing PCMCIA Options
2.3.2 Installing PCMCIA Options The Notebook has provisions for two Type I/Type II or one Type III PCMCIAoption card. Use the following procedure to install a PCMCIA option: 1. Review the installation instructions supplied with the PCMCIA option card(s). 2. Open the PCMCIA compartment cover on the l...
Page 26 - Installing the Optional Numeric Keypad; To remove or replace the battery pack, follow the steps below.; Figure 2-3 Installing the Numeric Keypad option
2.3.3 Installing the Optional Numeric Keypad An optional numeric keyboard can be attached to the notebook via thenotebook PS/2 connector as shown in Figure 2-3. 2.4 Installing the Battery Pack(s) The standard configuration of the Extensa Notebook is equipped with asingle battery pack that is inserte...
Page 27 - Installing External Devices; Figure 2-4 Extensa Port Assignments
c Caution: There is danger of explosion if the battery is incorrectly re-placed. Replace the battery only with the same or an equivalent typerecommended by the manufacturer. Discard used batteries according tothe manufacturer ’s instructions. 2.5 Installing External Devices Most external devices con...
Page 28 - Installing an External Keyboard/Mouse; Ensure that the notebook is powered off.
2.5.1 Installing an External Keyboard/Mouse As shown in Figure 2-5, the notebook has provisions for two external PS/2compatible devices (keyboard, mouse, etc.) that may be attached to thenotebook. The pinouts for the 6-pin Mini-DIN connectors are also providedin Figure 2-6. To install an external ke...
Page 29 - Installing External Parallel Printer; Figure 2-6 Parallel Port Location/Pinouts
2.5.2 Installing External Parallel Printer The Notebook is equipped with a bidirectional, ECC/EPP compatible, 25-pinparallel printer port. The connector pinouts and connector location areshown in Figure 2-6. If you will be using a parallel interface, connect the 25-pin male connectorof your printer ...
Page 30 - Installing External Serial Port Device; External Modem; Figure 2-7 Serial Port Location/Pinouts
2.5.3 Installing External Serial Port Device The notebook contains an RS-232 serial port with a male DB-9 connector asshown in Figure 2-7. The serial ports are used to interconnect such devicesas: • External Modem • Serial Printer • Any device that uses an RS-232 interface To connect a printer to th...
Page 31 - Installing External VGA Monitor; Figure 2-8 External Monitor Port Pinouts
2.5.4 Installing External VGA Monitor The notebook is capable of driving both its internal LCD display and anexternal VGA monitor (LCD only, simultaneous, or VGA only). The externalmonitor connector pinouts and connector locations are shown in Figure 2-8.To install an external monitor with the noteb...
Page 32 - Installing the AC Power Adapter; Connect the female side of the AC Power cord to the AC Adapter and; Figure 2-9 AC Adapter Installation
2.5.5 Installing External Microphone An external microphone can be attached to the notebook using the leftmostaudio connector (when viewed from the rear of the notebook). When theexternal microphone is installed and the unit powered up, the internalmicrophone is disabled. 2.5.6 Installing External A...
Page 33 - Extensa Series Notebook Computer User’s Reference Manual.
2.7 Initial System Checkout After you’ve installed all internal options and external cabling, you’re readyfor system checkout and software configuration. To check out the system, set the power switch on the notebook to the On ( I ) position which initiates the notebook self test. During self test ex...
Page 34 - Operating Instructions; For additional operating instructions, refer to the; Notebook Controls and Indicators; Touchpad and two select buttons at base of keyboard
3 Operating Instructions 3.1 Introduction The first two subsections describe the Extensa 51x Series Notebookoperating controls and indicators. The remainder of this section contains asummary of computer operations related to notebook maintenanceincluding how to restore system software. n Note: For a...
Page 35 - Button Switches; Switch - Alternate action, button type switch that; PWR; Button Switch - an alternate action touch switch; Cover Release Latch; Figure 3-1 Extensa Series Controls and Indicators
3.2.1 Button Switches The notebook contains two button switches above the keyboard including: • Power On/Off Switch - Alternate action, button type switch that controls power to the unit. Pressing the Power button causes power tobe applied to the notebook and power up self test to be run. The PWR LE...
Page 36 - Caps Lock; Operating Procedures; Extensa Series Notebook Computer User’s Manual; Floppy Drive Operating Procedures
3.2.3 Touchpad Controls The Extensa 51x Series Notebook Computers are equipped with a built-inmouse device called "the Touchpad" physically located at the bottom of thekeyboard (refer to Figure 3-1). The cursor is positioned by touching and dragging your finger in thedirection you want the c...
Page 37 - Installing/Removing PCMCIA Options; PC; Computer Hot Keys; Starting Windows 95; Command Prompt Only
• Insert the floppy into the floppy drive slot with the label side up and themetal-shutter end first. Gently push the floppy into the floppy drive slotuntil the floppy clicks into place. • To remove a floppy, press the eject button until the floppy pops out. • Never force open the access shutter on ...
Page 38 - RAM Disk; Recharging the Battery Packs
3.3.4 Responding to Low Battery Conditions The computer generally will notify you when you are reaching a low batterycondition by the following actions: • Four short beeps per minute (unless battery warning is disabled) • The battery low warning is automatically disabled when the AC Adapteris instal...
Page 39 - Restoring Missing System Files; Windows; Rebuilding the System Software; Windows 95 Startup
3.3.7 Restoring Missing System Files When you power up the Notebook, it automatically checks for certain keyfiles that must be present for normal system operation. If any of these filesare accidentally erased as indicated by error message, insert the Windows 95 Startup diskette and reboot the system...
Page 40 - Theory of Operation; Processor/Memory Subsystems
4 Theory of Operation 4.1 Introduction This section describes the notebook theory of operation. 4.2 Notebook Functional Description Functionally, the notebook computer consists of the following majorsubsystems: • Processor and Memory Subsystem • I/O Subsystem • Video Subsystem • Hard Disk Subsystem ...
Page 41 - Figure 4-1 Notebook Functional Block Diagram
EXTERNAL VGA MON ITOR MA IN BO A RD XD BUS SD BUS Input From AC Adapter SYSTEM & VGA BIOS XD BUS Super I/O Con trol ler RS-232Serial P ort Drivers/R ecei vers C&T 65540 Inte l 100 MHzP e n ti u mProcessor V i d e o C o n t r o l l e r SystemCon trol ler S ta te M a c h i n e& Gl u e L o ...
Page 43 - Video Subsystem
• Integral address decoder - provides selection of all primary andsecondary ISA addresses including COM1-4 and LPT1-3. • Enhanced Power Management Function • Special configuration registers for power down • Enhanced programmable power -down and wake-up modes • Auto power -down and wake-up modes • 3 ...
Page 47 - Table 4-4 Primary Battery Pack Specifications; Function
Table 4-4 Primary Battery Pack Specifications Function Specifications Battery type NiMH (Nickel Metal-Hydride) Cell structure 9 cells per pack (in series) Nominal voltage 10.8 V Cell energy capacity Typical Minimum 2400 mAH2500 mAH2330 mAH Nominal rated capacity 27 Watt-hours Operating Temperature _...
Page 48 - Troubleshooting Procedures; General; This section provides the following information:; Overview of Fault Isolation Process; Quick Check of the following:; Troubleshooting
5 Troubleshooting Procedures 5.1 General This section provides the following information: • Overview of the fault isolation process • Guidelines for isolating computer malfunctions to replaceablesubassemblies • Instructions for executing diagnostics and interpreting error messages 5.2 Overview of Fa...
Page 49 - Figure 5-1 Troubleshooting Flowchart
S T A R T C O M P U T E R T R O U B LE I NDI CA T I O N ? D E A D CO M P UT E RS Y M P T O M S ? R U N S E LF T E S T E R RO R M E S S A G E ? M O D E M P R O B L E M ? R U N DI A G NO S T I CS DI A G NO S T I CS E RRO R M S G ? N O Y E S N O Y E S S E E P A RA G R A P H 5. 3. 4 N O Y E S S E E P A ...
Page 50 - Troubleshooting a Power Supply Problem; To fault isolate a power problem, check the following:; switch is set to the On position and that the system is not in
• Try rebooting the system (Ctrl-Alt-Del); restore system from diskettes, ifnecessary. • If the computer is capable of running the Setup program; check theserial and parallel port configurations, and other features that mayaffect system operation. • Run Diagnostics to further isolate problem area (r...
Page 51 - Figure5-2 Troubleshooting Block Diagram
• Measure the voltage at the AC Outlet or plug in a known good appliance(EG. a lamp) to verify that voltage is present. If the voltage is OK, tryreplacing the AC Adapter • Check to see that the battery pack is installed correctly (try using arecharged battery pack if battery is discharged). • If the...
Page 52 - Troubleshooting a Display Problem; Standby Mode; Fault Isolation Using Self Test
5.3.2 Troubleshooting a Display Problem If the LCD remains blank when you turn on the computer, and the statusindicators light, check the following controls on the display (refer to Figure3-1): • LCD Standby mode - If the LCD backlight remains off, even with theBrightness and Contrast Controls set t...
Page 53 - Fault Isolation Using Diagnostics; function key pressing the
• Faulty phone line - Connect a telephone to the line and listen for a dialtone. • Software program - Check to ensure that you have installed thesoftware correctly. 5.3.5 Fault Isolation Using Diagnostics PC-Doctor, supplied with the Extensa Series Notebooks, is a powerfuldiagnostics tool that can h...
Page 54 - Diagnostics; heading in the main menu, that; Interactive Tests
• Group of special purpose utilities to run other tests from PC-Doctor,perform a virus scan of the internal RAM system, edit configurationfiles, surface scan hard drives, measure system performance, open aDOS prompt, provides terminal access to devices connected to serialports, supports memory debug...
Page 55 - Supporting Online Documentation; Technical Reference Manual for PC-Doctor
• Printer Test - tests the operation of a connected printer • SCSI Test - sends test codes to attached SCSI devices (requires use of a Docking System with SCSI) • CD-ROM Test - checks out any attached CD-ROM Drive (requires attachment of a Docking System with CD-ROM capability) 5.3.5.2 Supporting On...
Page 56 - Creating a Bootable Floppy Diskette
5.3.5.3 Creating a Bootable Floppy Diskette Prior to using PC-Doctor, create a bootable floppy diskette using thefollowing procedure: 1. Power up the unit; when unit displays message, "Starting Windows 95", press F8 . Choose Command Prompt Only from menu. 2. Using DOS, format a floppy disket...
Page 57 - If PC-Doctor detects a virus, it will stop with an error message. You; pull down menu and then select the; Quit; For additional information, press
n Note: If PC-Doctor detects a virus, it will stop with an error message. You must then use one of the standard virus detection and removal programs toremove the virus. 5.3.5.5 Quitting PC-Doctor To exit PC-Doctor, select the Quit pull down menu and then select the Quit to DOS option. n Note: For ad...
Page 58 - Cleaning the Computer; Field Service
6 Field Service 6.1 Introduction This section contains preventive and corrective maintenance procedures forthe Extensa 51x Series Notebook Computers. The first part of the sectiondescribes the computer cleaning procedures and preferred handlingprocedures for sensitive components (e.g. disk drives, b...
Page 59 - Do not disassemble the battery pack.; Restoring System Software; Startup
6.2.2 Protecting the Disk Drives To protect the disk drives and data, back up the system disk periodically onfloppy diskettes. Periodically use a head-cleaning diskette in the floppydiskette drive to prolong the life of the drive and to help maintain dataintegrity. 6.2.3 Handling the Computer Batter...
Page 60 - Required Tools and Equipment; Display Assembly
6.3 Required Tools and Equipment All notebook computer corrective maintenance procedures can be performedusing the following tools: • Tweezers • Small flat-blade screwdriver • Small Phillips screwdriver • Hexagonal Screwdriver • Plastic Stick • Conductive mat/wrist or ankle grounding strap system fo...
Page 61 - FRU Description; Reference
Table 6-1 Cover-Display Assembly, Field-Replaceable Units (FRUs) FRU Description TI Part No. Reference Paragraph No. Inverter Board, DSSTN 10.4" 9811361-0001 6.5.9 Display Assembly, 10.4" DSSTN 50X, 51X 9811363-0001 6.5.9 Bezel Assembly, DSSTN 10.4", W/O label 9811373-0001 6.5.9 LCD Pane...
Page 64 - CRU Description; Turn off the computer.
Table 6-3 Notebook CRUs (Customer-Replaceable Units) CRU Description TI Part No. Reference Paragraph No. AC Adapter Assembly 9803931-0001 Sec. 2 Internal Battery Pack, Ni-MH 9803928-0001 6.5.1 4 MB RAM SIMM 9803932-0001 6.5.7 8 MB RAM SIMM 9803950-0001 6.5.7 16B RAM SIMM 9803933-0001 6.5.7 Door, PCM...
Page 65 - Removing/Replacing the Keyboard Assembly
3. Grasp the ribbon loop on the battery and pull the battery out of the compartment. 4. When replacing the battery, insert the end opposite the ribbon loop with the battery notches pointing upward. Slide the battery into thecompartment and replace the battery door. 6.5.2 Removing/Replacing the Keybo...
Page 66 - Removing/Replacing the Heat Sink; Disconnect the AC adapter from the Notebook.; Figure 6-2 Removing/Replacing the Keyboard
6.5.3 Removing/Replacing the Heat Sink To remove and replace the heat sink, perform the following procedure: 1. Disconnect the AC adapter from the Notebook. 2. Remove the battery as described in Paragraph 6.5.1. 3. Loosen and tilt back the the keyboard assembly as described in Paragraph 6.5.2. 4. Re...
Page 67 - Opening/Replacing the Upper Case Assembly; Remove the AC Adapter, battery pack, any installed PCMCIA options,; Figure 6-3 Removing/Replacing the Heat Sink Assembly
6.5.4 Opening/Replacing the Upper Case Assembly To remove/replace the Top Case Assembly, perform the following procedure: 1. Remove the AC Adapter, battery pack, any installed PCMCIA options, the Keyboard Assembly and Heat Sink Assembly as described inParagraphs 6.5.1 through 6.5.3 2. Turn the noteb...
Page 68 - Removing/Replacing the Hard Drive
4. Using a plastic stick, unlock the ZIF connector located near the Touchpad and remove the cable from the connector. Also, remove the2-connector speaker cable from the Main Board Connector. 5. Remove the cable cover below the display by lifting upward on the front edge of the cover. 6. Disconnect t...
Page 71 - Removing/Replacing the Touchpad Assembly
c Caution: If the notebook is powered up with the LCD bezel removed,you can be exposed to high voltages which could result in shock andequipment damage. Ensure that the batteries and AC adapter are re-moved from the notebook when working on the LCD/Display assembly. 1. Use a narrow piece of plastic ...
Page 72 - Removing/Replacing the Main Board
6.5.11 Removing/Replacing the Smart Battery BoardControl Board To remove and replace the Smart Battery Control Board, perform thefollowing procedure: 1. Remove the Upper Case Assembly as described in Paragraph 6.5.4. 2. Disconnect the battery cable located next to HDD Connector. 3. Remove the two sc...
Page 73 - Removing/Replacing the Pentium Chip; ON; Figure 6-5 Switch Settings for Main Board
6. Using a small flat blade screwdriver and apply light pressure in a rocking motion to remove the hard drive cable connector. 7. Remove four Phillips-head screws (one on each of the four sides of the heat sink opening) securing the board to the base assembly. Do notremove the smaller screws which a...
Page 74 - Figure 6-6 Removing the Processor Chip
3. Gently pry to the left (with pin 1 alignment at the bottom right as shown in Figure 6-6). 4. Gently remove the chip from the socket. 5. To install a chip into a vacant CPU socket, insert a flat blade screwdriver into the opening at the right side of the processor socket(refer to Figure 6-6) and p...
Page 75 - Self Test Error Messages; Table A-1 Self Test Error Messages; Error Message; Error Messages
A Self Test Error Messages A.1 Introduction This appendix contains reference data useful in diagnosing and correctingself test errors. Table A-1 Self Test Error Messages Error Message Corrective Action CMOS Battery Bad Replace Main Board CMOS Checksum Error Cycle power to Notebook; if problem persis...
Page 76 - Table A-2 POST Checkpoint List; Checkpoint
Error Message Corrective Action Keyboard Interface Error Cycle Power to Notebook. Ifproblem persists, replace keyboard;if problem persists, replace MainBoard. Memory Size Mismatch Enter and then exit the SystemConfiguration Setup in the Setuputility. Missing operating system Correct the HDD type and...
Page 80 - PC-Doctor Diagnostics; Enter
B PC-Doctor Diagnostics B.1 Introduction The Extensa Series Notebooks are shipped with PC-Doctor, a powerfuldiagnostics tool that can help you determine the hardware configuration ofa local or remote system, benchmark its performance, analyze theperformance of all subsystems, and perform a suite of ...
Page 81 - Mouse Navigation
B.3 Mouse Navigation You can use a mouse to navigate through PC-Doctor (alternately use thearrow keys from the keyboard). Use the left mouse button to choose objects(menu entries and action codes in square brackets). Use the right mousebutton as you would the Esc key to take you back to your previou...
Page 82 - Interactive Tests Menu
• All Tests - allows you to select which tests to run. You can also specify special testing options. By pressing F2 , the following options are available: – Halt On Errors - interrupts testing if an error is detected. n Note: External serial and parallel port testing requires loopback plugs (not pro...
Page 84 - Remote Operation
• Edit CMOS RAM - gives access to CMOS RAM data • File Editor - allows editing of configuration files • Surface Scan Hard Disk - checks for defects on the hard disk • Benchmark System - measures system performance • DOS Shell - opens a DOS prompt from within PC-Doctor • Terminal - gives access to de...