Toshiba Tecra A3/S2 2.5 Keyboard Troubleshooting

2.5 Keyboard Troubleshooting 2 Troubleshooting Procedures

2.5 Keyboard Troubleshooting

P erform external keybo ard check

(P ro ce du re 1 )

START

D o es the external

keyboard function ok?

P erform diagnostic check

(P ro ce du re 2 )

Was a keyboard

problem detected?

Perfo rm connector and

replacem ent check

(P ro ce du re 3 )

Replace system board

END

Yes

K eyboard is not

faulty. C ontinue

troubleshooting-

refe r to F igu re 2 .1

Yes

Figure 2-4 Keyboard troubleshooting process

Tecra A3/S2 Series Maintenance Manual 2-15

Contents

Main Toshiba Personal Computer TECRA A3/S2 Maintenance Manual TOSHIBA CORPORATION Page Page Page Page Table of Contents Page Page Page Page Page Chapter 1 Contents Page 1.1 Features Page Page Page Page 1.2 System Unit Page Page Page Page 1.4 Optical Devices module Page Page Page 1.5 Power Supply Page 1.6 Batteries Page Page Page Chapter 2 Contents Page 2.1 Troubleshooting Introduction 2.2 Troubleshooting Flowchart 2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures A Tecra A3/S2 Series Maintenance Manual 2-3 Figure 2-1 Troubleshooting flowchart (1/2) 2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting A Figure 2-1 Troubleshooting flowchart (2/2) Page Page 2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-7 END Figure 2-2 Power Supply Troubleshooting Process Page Page Page Page 2 Troubleshooting Procedures 2.4 Display Troubleshooting 2.4 Display Troubleshooting 2-12 Tecra A3/S2 Series Maintenance Manual Figure 2-3 Display troubleshooting process Page Page 2.5 Keyboard Troubleshooting 2 Troubleshooting Procedures 2.5 Keyboard Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-15 Figure 2-4 Keyboard troubleshooting process Page 2.6 External USB Devices Troubleshooting 2 Troubleshooting Procedures 2.6 External USB Devices Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-17 Figure 2-5 External USB device troubleshooting process Page 2.7 TV-Out Failure Troubleshooting 2 Troubleshooting Procedures 2.7 TV-Out Failure Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-19 Figure 2-6 TV-out troubleshooting process Page 2.8 Printer Port Troubleshooting 2 Troubleshooting Procedures 2.8 Printer Port Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-21 Figure 2-7 Printer port troubleshooting process Page 2.9 TouchPad Troubleshooting Page 2.9 Touch Pad Troubleshooting 2 Troubleshooting Procedures 2.10 Speaker Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-25 Figure 2-9 Speaker troubleshooting process Page 2.9 Touch Pad Troubleshooting 2 Troubleshooting Procedures 2.11 Modem Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-27 Figure 2-11 Modem troubleshooting process Page 2.9 Touch Pad Troubleshooting 2 Troubleshooting Procedures 2.12 PCMCIA Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-29 Figure 2-12 PCMCIA troubleshooting process Page 2.9 Touch Pad Troubleshooting 2 Troubleshooting Procedures 2.13 IEEE 1394 Troubleshooting Tecra A3/S2 Series Maintenance Manual 2-31 Figure 2-13 IEEE 1394 troubleshooting process Page Page 2 Troubleshooting Procedures 2.10 Speaker Troubleshooting 2.14 Wireless LAN Troubleshooting Figure 2-14 Wireless LAN troubleshooting process Page Page Page Page Contents Page 3.1 The Diagnostic Test 3.2 Executing the Diagnostic Test Page Page Page 3.3 Config Check Test 3.4 DMI Check Test 3.5 PIO Loopback Test Page 3.6 Speaker Audio Test 3.7 Fan ON/OFF Test 3.8 Main Battery Charge Test 3.9 FDD Test 3.10 CD-ROM Test 3.11 Keyboard Test Page 3.12 Mouse (Pad) Test Page 3.13 LCD Pixels Mode Test 3.14 Lid Switch Test 3.15 HDD R/W Test Page 3.16 LAN Test Page Page Page 3.17 RTC Test Page Page Chapter 4 Contents Page Page 4.1 General Page Page Page Page Page 4.2 Battery 4.3 PC Card 4.4 HDD Page M3X3 4.5 Optical Drive Module 4.6 Optical Drive Page 4.7 Wireless LAN M2.5X3.6 4.8 Expansion Memory Module Page Page Page 4.9 Keyboard Page Page 4.10 Bluetooth 4.11 Modem M2.5X3 4.12 Display Assembly Page 4.13 Top Cover Page Page 4.14 Touch Pad 4.15 Speakers 4.16 System Board Page Page 4.17 Direct Play Button Board 4.18 Fan, Heat Sink, & CPU M2.5X5 Page Page 4.19 Display Mask Page 4.20 LCD Module Page 4.21 FL Inverter Board Appendix A Handling the LCD Module Precautions for handling the LCD module Page Page Page Page Page Page Page Page Table B-2 System board connector nd bottom) s (top a Appendix C Pin Assignments System Board C.1 JP24 ble M I in a ts 4) ,JP25 Table M I n a ts 4) C-1 SODIM /F pi ssignmen (200-PIN) (2/ Table M I in a ts 4) C-1 SODIM /F p ssignmen (200-PIN) (3/ Page C.2 JP1 C.3 JP18 DD pin n Table C-3 H I/F assignme ts (44-pin) C.4 JP31 ODD pin ents Table C-4 I/F assignm (50-pin) C.5 JP19 ab rd I in a nts ) T le C-5 PC Ca /F p ssignme (84-pin) (1/2 Page Page C.6 JP28 Table C-6 Mini PCI I/F pin assignments (124-pin) (1/2) Table C-6 Mini PCI I/F pin assignments (124-pin)(2/2) Page C.7 JP6 C.8 JP 29 C.9 JP12 C.10 PJP1 C.11 JP21 C.12 JP22 Appendix D Keyboard Scan/Character Codes Table D-1 s (set 1 and Scan code set 2) (1/4) Table D-1 s (set 1 and Scan code set 2) (2/4) Table D es (set 1 and s -1 Scan cod et 2) (3/4) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Appendix F Series Screw Torque List Table F-1 Series Screw Torque List Page SCREW P/N SCREW SPEC Q'ty LOCATION SCREW TORQUE LOGIC ASSY TECRA A3/S2 Series Maintenance Manual F-2 F-3 TECRA A3/S2 Series Main tenance Manual Appendix G Reliability