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Toshiba S2 manual Marvell 88E8053 for Giga LAN, Marvell 88E8036 for 10/100M LAN, System Unit

Models: S2

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1.2 System Unit

1 Hardware Overview

Marvell 88E8053 for Giga LAN

?PCI Express base specification 1.0a compliant

?x1 PCI Express interface with 2.5 GHz signaling

?Advanced error reporting

?Message signaled interrupts

?Configurable 48 KB deep buffer

?On-chip VLAN insertion and removal

?TCP, IP, UDP Checksum offload

?Compliant to 802.3x flow control support

?10/100/1000 IEEE 802.3 compliant

?Automatic MDI/MDIX crossover at all speeds

?Wake On LAN(WOL) power management support

?Compliant to ACPI 2.0 specification

?Smart power down when link is not detected

?Marvell Virtual Cable Tester(VCT) for advanced cable diagnostics

Marvell 88E8036 for 10/100M LAN

?PCI Express base specification 1.0a compliant

?x1 PCI Express interface with 2.5GHz signaling

?Active state power management (L0s) support

?Advanced error reporting

?Configurable 4KB deep buffer

?Message signaled interrupts

?Compliant to 802.3x flow control support

?10/100 IEEE 802.3 compliant

?Wake On LAN(WOL) power management support

?Compliant to ACPI 2.0 specification

?Smart power down when link is not detected

?Power regulator outputs for 2.5V and 1.2V supplies

Marvell 88SA8040 for Serial ATA Bridge

?ATA/ATAPI PIO mode data transfer

?ATA/ATAPI Ultra DMA(UDMA) data transfer rates of 16.7, 25, 33, 44, 66, 100, 133 and 150MB/s

?Serial ATA power save modes

?Serial ATA hot-plug

?Enhanced receiving FIFO flow control for Serial ATA link

?DMA Command Queuing(maximum 32 entries

?Supports 20, 25, 30, or 40MHz reference clock.

?Serial ATA Interface of 1.5Gbps

?Full scan for high production test coverage

Tecra A3/S2 Series Maintenance Manual

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Toshiba S2 manual Marvell 88E8053 for Giga LAN, Marvell 88E8036 for 10/100M LAN, Marvell 88SA8040 for Serial ATA Bridge

Contents

TECRA A3/S2 Maintenance Manual TOSHIBA CORPORATIONToshiba Personal Computer Copyright injury if the safety instruction is not observed The manual is divided into the following parts Chapter DISKCOPY A B Chapter 2 Troubleshooting Procedures Table of ContentsChapter 1 Hardware Overview Chapter 3 Tests and Diagnostics Chapter 4 Replacement Procedures GeneralBoard Layout AppendicesKey Layout Chapter Hardware Overview Tecra A3/S2 Series Maintenance Manual 1 Hardware Overview1-ii Chapter ContentsError! Bookmark not defined 1 Hardware Overview1 Hardware Overview Tecra A3/S2 Series Maintenance Manual1-iv 1.2 System Unit 1.1 Features1 Hardware Overview 1 Hardware Overview ? BIOS ? 1MB Flash ROM for system BIOS a Suspend to RAM/Disk1.2 System Unit 1 Hardware Overview 1.2 System Unit? Keyboard 1.2 System Unit 1 Hardware Overview? PCMCIA Card Organization 1 Hardware Overview 1.2 System Unit? TV-out port 1 Hardware Overview 1.2 System Unit1.2 System Unit 1.2 System Unit Realtek ALC250VD for AC97 codec1 Hardware Overview 1 Hardware Overview TI PCI7411 Card Bus Host Adapter1.2 System Unit Marvell 88SA8040 for Serial ATA Bridge Marvell 88E8053 for Giga LANMarvell 88E8036 for 10/100M LAN 1.2 System UnitTecra A3/S2 Series Maintenance Manual 1.3 2.5-inch Hard Disk Drive1.3 2.5-inch Hard Disk Drive 1 Hardware Overview1.4.1 DVD-ROM Drive 1.4 Optical Devices module1.4 Removable Drives 1.4.2 CD-ROM Drive1 Hardware Overview 1.4.3 CD-RW/DVD-ROM Drive1.4 Removable Drives 1.4.5 DVD Super Multi Drive 1.5 Power Supply1.4.4 DVD±R/±RW Drive 1 Hardware Overview1.5 Power Supply DVD-RAMStandard rotational speed 1 Hardware Overview1.5 Power Supply 1.5 Power Supply1 Hardware Overview 6. Power ON/OFF sequence 1.5 Power Supply1 Hardware Overview 1.6 Batteries 1.6.1 Main Battery1.6 Batteries 1 Hardware Overview1 Hardware Overview 1.6.2 RTC battery1.6 Batteries Chapter Troubleshooting Procedures Tecra A3/S2 Series Maintenance Manual 2 Troubleshooting Procedures2-ii Troubleshooting Introduction Contents2 Troubleshooting Procedures ChapterTables Figures2 Troubleshooting Procedures 2.1 Troubleshooting Introduction 2.1 Troubleshooting Introduction2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting 2.2 Troubleshooting Flowchart2 Troubleshooting Procedures 2 Troubleshooting Procedures Figure 2-1 Troubleshooting flowchart 1/22.3 Power Supply Troubleshooting Tecra A3/S2 Series Maintenance Manual2 Troubleshooting Procedures Figure 2-1 Troubleshooting flowchart 2/22.3 Power Supply Troubleshooting 2 Troubleshooting Procedures 2.3 Power Supply TroubleshootingIf the diagnostics program cannot detect an error, the problem may be intermittent. The test program should be executed several times to isolate the problem. When a problem has been located, perform the appropriate troubleshooting procedures as follows 2.3 Power Supply Troubleshooting 2 Troubleshooting ProceduresOther problems that are not covered by the diagnostics program may be discovered by a user 2.3 Power Supply Troubleshooting 2.3 Power Supply TroubleshootingFigure 2-2 Power Supply Troubleshooting Process 2 Troubleshooting ProceduresBattery State Procedure 1 Power Status CheckTable 2-1 Battery LED LED colorsNo AC power exists Power supply statusAC power exists LED is solid green Procedure 2 Adaptor / battery replacementBattery Procedure 3 Power supply connection checkAC power cord 2 Troubleshooting Procedures2.3 Power Supply Troubleshooting Procedure 4 Diagnostic checkProcedure 5 Replacement check 2 Troubleshooting ProceduresFigure 2-3 Display troubleshooting process 2.4 Display Troubleshooting2.4 Display Troubleshooting 2 Troubleshooting Procedures2.4 Display Troubleshooting Procedure 1 External display checkProcedure 2 Diagnostic check 2 Troubleshooting Procedures2 Troubleshooting Procedures Procedure 3 Connector and replacement check2.4 Display Troubleshooting Figure 2-4 Keyboard troubleshooting process 2.5 Keyboard Troubleshooting2.5 Keyboard Troubleshooting 2 Troubleshooting Procedures2.5 Keyboard Troubleshooting Procedure 1 External keyboard check2 Troubleshooting Procedures Procedure 2 Diagnostic checkFigure 2-5 External USB device troubleshooting process 2.6 External USB Devices Troubleshooting2.6 External USB Devices Troubleshooting 2 Troubleshooting Procedures2 Troubleshooting Procedures Procedure 1 External device and connection checkProcedure 2 Replace system board 2.6 External USB Devices TroubleshootingFigure 2-6 TV-out troubleshooting process 2.7 TV-Out Failure Troubleshooting2.7 TV-Out Failure Troubleshooting 2 Troubleshooting Procedures2 Troubleshooting Procedures Procedure 1 TV connection checkProcedure 2 TV set check 2.7 TV-Out Failure TroubleshootingFigure 2-7 Printer port troubleshooting process 2.8 Printer Port Troubleshooting2.8 Printer Port Troubleshooting 2 Troubleshooting ProceduresProcedure 3 Replace system board Procedure 1 Diagnostic checkProcedure 2 Printer port loopback check 2 Troubleshooting ProceduresFigure 2-8 TouchPad troubleshooting process 2.9 TouchPad Troubleshooting2.9 Touch Pad Troubleshooting 2 Troubleshooting ProceduresProcedure 2 TouchPad replacement check 2.9 TouchPad TroubleshootingProcedure 1 TouchPad connection check 2 Troubleshooting Procedures2.9 Touch Pad Troubleshooting 2.10 Speaker TroubleshootingFigure 2-9 Speaker troubleshooting process 2 Troubleshooting ProceduresProcedure 3 Connection check Procedure 1 Audio source testProcedure 2 Earphone test Procedure 4 Replacement check2.9 Touch Pad Troubleshooting 2.11 Modem TroubleshootingFigure 2-11 Modem troubleshooting process 2 Troubleshooting ProceduresProcedure 3 Modem replacement check Procedure 1 Telephone line connection checkProcedure 2 Modem card connection check 2 Troubleshooting Procedures2.9 Touch Pad Troubleshooting 2.12 PCMCIA TroubleshootingFigure 2-12 PCMCIA troubleshooting process 2 Troubleshooting Procedures2 Troubleshooting Procedures Procedure 1 SYCARD testProcedure 2 PCMCIA socket replacement check 2.9 TouchPad Troubleshooting2.9 Touch Pad Troubleshooting 2.13 IEEE 1394 TroubleshootingFigure 2-13 IEEE 1394 troubleshooting process 2 Troubleshooting Procedures2 Troubleshooting Procedures Procedure 1 IEEE 1394 device checkProcedure 3 Connection and replacement check 2.9 TouchPad TroubleshootingTecra A3/S2 Series Maintenance Manual 2.9 Touch Pad Troubleshooting2 Troubleshooting Procedures 2-33Figure 2-14 Wireless LAN troubleshooting process 2.14 Wireless LAN Troubleshooting2.10 Speaker Troubleshooting 2 Troubleshooting ProceduresProcedure 2 Connector and replacement check ProcedureDiagnostic test 2.10 Speaker TroubleshootingTecra A3/S2 Series Maintenance Manual 2 Troubleshooting Procedures2.10 Speaker Troubleshooting 2-36Chapter Tests and Diagnostics Tecra A3/S2 Series Maintenance Manual 3. Tests and Diagnostics3-ii 3-12 Test and Diagnostic Operation3-11 3-13Tecra A3/S2 Series Maintenance Manual 3. Tests and Diagnostics3-iv NOTES To start the diagnostics, follow these steps 3.1 The Diagnostic Test3.1 The Diagnostic Test 2. Exit this program when you are at Main Menu3. Tests and Diagnostics Tecra A3/S2 Series Maintenance Manual3.2 Executing the Diagnostic Test 3.2 Executing the Diagnostic Test3. Tests and Diagnostics 3. Tests and Diagnostics Executing the Diagnostic TestThe below display will show up at the beginning of T&D program Tecra A3/S2 Series Maintenance Manual3. Tests and Diagnostics 3.2 Executing the Diagnostic TestIf an error is detected and a test fails, the following message displays 3.2 Executing the Diagnostic Test NOTE Press Pause to pause a test and Enter to resume3. Tests and Diagnostics Tecra A3/S2 Series Maintenance Manual3 Tests and Diagnostics 3.3 Config Check Test3.3 Parallel Port Test 3.4 DMI Check Test 3.4 DMI Check Test3. Tests and Diagnostics 3.5 PIO Loopback Test 3.5 PIO Loopback Test3. Tests and Diagnostics Tecra A3/S2 Series Maintenance Manual 3.6 IEEE 1394 Test3. Tests and Diagnostics 3-103.7 Speaker Audio Test 3.6 Speaker Audio Test3. Tests and Diagnostics 3.8 Fan ON/OFF Test 3.7 Fan ON/OFF Test3. Tests and Diagnostics 3.9 Main Battery Change Test 3.8 Main Battery Charge Test3. Tests and Diagnostics NOTE Press “Esc” key can skip the current subtest 3.9 FDD Test3.10 FDD Test 3 Tests and Diagnostics3.10 FDD Test 3. Tests and DiagnosticsTecra A3/S2 Series Maintenance Manual 3-153. Tests and Diagnostics 3.10 CD-ROM Test3.11 CD-ROM Test NOTE Press “Esc” key can skip the current subtest3.12 Keyboard Test 3.11 Keyboard Test3. Tests and Diagnostics 3.12 Keyboard Test 3. Tests and DiagnosticsTecra A3/S2 Series Maintenance Manual 3-183.12 Keyboard Test 3. Tests and DiagnosticsTecra A3/S2 Series Maintenance Manual 3-19NOTE The Touch Pad test cannot be used to test an external USB mouse 3.12 Mouse Pad Test3.13 Mouse Pad Test 3. Tests and Diagnostics3.13 Mouse Pad Test 3. Tests and DiagnosticsAfter checking T/Pad buttons and cursor’s function, use “Tab” key or use T/Pad cursor to click the “OK” column will end this test 3.14 LCD Pixels Mode Test 3.13 LCD Pixels Mode Test3. Tests and Diagnostics 3.15 Lid Switch Test 3.14 Lid Switch Test3. Tests and Diagnostics 3.16 HDD R/W Test 3.15 HDD R/W Test3. Tests and Diagnostics 3. Tests and Diagnostics NOTE Press “Ctrl + Break” keys can terminate the current subtestNOTE The AC adaptor should be connected to successfully run this test Tecra A3/S2 Series Maintenance ManualNOTE LAN loopback needs to plug in before test begins 3.16 LAN Test3.17 LAN Test 3. Tests and Diagnostics3. Tests and Diagnostics The screen should display as below, indicatingpass will go on to next test Tecra A3/S2 Series Maintenance Manual3.17 LAN Test 3. Tests and DiagnosticsTecra A3/S2 Series Maintenance Manual 3-283.17 LAN Test 3. Tests and DiagnosticsTecra A3/S2 Series Maintenance Manual 3-293.19 CD Control Button Test 3.17 RTC Test3. Tests and Diagnostics Chapter Replacement Procedures Tecra A3/S2 Series Maintenance Manual 4 Replacement Procedures4-ii Battery Contents4 Replacement Procedures ChapterFigures 4 Replacement ProceduresRemoving the HDD Module 4 Replacement Procedures Removing the FL inverter boardDisplay Assembly 4.1 General4 Replacement Procedures Expansion Memory4 Replacement Procedures The example below shows FRUs to be removed before the Direct Play button board can be removed and repaired or replaced. The Direct Play button board is overlapped by the top cover which must be removed before the Direct Play button board can be reached. The removable HDD, keyboard, wireless LAN, ODD, modem, and display assembly in turn overlap the top cover. Always starts the disassembly process by removing the battery packWARNING To avoid the risk of electric shock or other injury Safety PrecautionsDANGER 3. Never work with wet or damp handsBefore You Begin 4 Replacement ProceduresAssembly Procedures Disassembly Procedures4 Replacement Procedures Tools and Equipment 4 Replacement ProceduresFigure 4-1 Removing the battery pack 4.2 BatteryRemoving the Battery Pack 4 Replacement ProceduresRemoving a PC Card Installing the Battery Pack4.3 PC Card 4 Replacement Procedures4 Replacement Procedures Figure 4-2 Removing a PC Card Tecra A3/S2 Series Maintenance Manual4.4 HDD Installing a PC CardFigure 4-3 Installing a PC Card 4 Replacement Procedures4 Replacement Procedures Removing the HDD ModuleFigure 4-5 Removing the HDD door Tecra A3/S2 Series Maintenance ManualDisassembling the HDD Module Installing the HDD ModuleFigure 4-6 Removing the HDD module 4 Replacement Procedures4.5 Optical Drive Module 4 Replacement Procedures Figure 4-7 Removing the HDD bracketRemoving the Optical Drive Module Figure 4-8 Removing the optical drive module Installing the Optical Drive Module4 Replacement Procedures Figure 4-9 Removing the optical drive bracket 4.6 Optical DriveDisassembling the Optical Drive 4 Replacement ProceduresReassembling the Optical Drive 4.6 Optical Drive4 Replacement Procedures Figure 4-10 Removing the wireless LAN cover 4.7 Wireless LANRemoving the Wireless LAN 4 Replacement ProceduresInstalling the Wireless LAN Figure 4-11 Removing the wireless LAN unit4 Replacement Procedures Figure 4-12 Removing the memory module cover 4.8 Expansion Memory ModuleRemoving an Expansion Memory 4 Replacement Procedures7. Replace the battery pack Figure 4-13 Removing a memory module4 Replacement Procedures Tecra A3/S2 Series Maintenance ManualFigure 4-14 Removing an expansion memory cover Installing an Expansion Memory Module4 Replacement Procedures Tecra A3/S2 Series Maintenance Manual Figure 4-15 Installing an expansion memory4 Replacement Procedures 4-22Figure 4-16 Removing the strip cover 4.9 KeyboardRemoving the Keyboard 4 Replacement Procedures4 Replacement Procedures Figure 4-17 Removing the keyboard5. Lift the keyboard out of its bay, revealing the keyboard cable 4 Replacement Procedures Figure 4-18 Disconnecting the keyboard cable Installing the KeyboardFigure 4-19 Removing the Bluetooth 4.10 BluetoothRemoving the Bluetooth Installing the BluetoothFigure 4-20 Removing the modem module 4.11 ModemRemoving the Modem 4 Replacement ProceduresRemoving the Display Assembly 4.12 Display AssemblyInstalling the Modem Figure 4-21 Removing the display assembly screwsInstalling the Display Assembly Figure 4-22 Removing the wireless and LCD cables4 Replacement Procedures Removing screws of the bottom 4.13 Top CoverRemoving the Top Cover 4 Replacement Procedures4 Replacement Procedures Figure 4-24 Removing the top coverFigure 4-25 Removing FFC cables Tecra A3/S2 Series Maintenance ManualFigure 4-26 Removing Speaker cables Installing the Top Cover4 Replacement Procedures Removing the Touch Pad Installing the Touch Pad4.14 Touch Pad Figure 4-27 Removing the Touch Pad boardRemoving the Speakers Installing the Speakers4.15 Speakers Figure 4-28 Removing the speakersFigure 4-29 Removing LAN board 4.16 System BoardRemoving the LAN Board 4 Replacement ProceduresFigure 4-30 Removing USB board Installing the LAN BoardRemoving the USB Board 4 Replacement ProceduresFigure 4-31 Removing the system board Installing the USB BoardRemoving the System Board 4 Replacement ProceduresRemoving the Direct Play Button Board Installing the System Board4.17 Direct Play Button Board Figure 4-32 Removing the Direct Play Button boardRemoving the Fan, Heat Sink & CPU Installing the Direct Play Button Board4.18 Fan, Heat Sink, & CPU 4 Replacement ProceduresFigure 4-35 Removing the CPU Figure 4-33 Removing the fan moduleFigure 4-34 Removing the heat sink 4 Replacement ProceduresInstalling the CPU 4 Replacement ProceduresFigure 4-36 Removing the display mask 4.19 Display MaskRemoving the Display Mask 4 Replacement ProceduresTecra A3/S2 Series Maintenance Manual Installing the Display Mask4 Replacement Procedures 1. Seat the display mask and secure the snaps on each sideFigure 4-37 Removing the LCD module-1 4.20 LCD ModuleRemoving the LCD Module 4 Replacement ProceduresFigure 4-38 Removing the LCD module-2 Installing the LCD Module4 Replacement Procedures Removing the FL Inverter Board Installing the FL Inverter Board4.21 FL Inverter Board Figure 4-39 Removing the FL inverter boardPrecautions for handling the LCD module Appendix A Handling the LCD Module3. If the panel’s surface gets dirty, wipe it with cotton or a soft cloth. If it is still dirty, try breathing on the surface to create a light condensate and wipe it again 5. Glass is used in the panel, so be careful not to drop it or let it strike a hard object, which could cause breakage or cracks 7. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods TECRA A3/S2 Series Maintenance Manual TECRA A3/S2 Series Maintenance Manual Figure B-1 System board FRDSY* layout Top Appendix B Board LayoutB.1 System Board FRDSY* Top View TECRA A3/S2 Series Maintenance ManualFigure B-2 System board FRDSY* layout Button B.2 System Board FRDSY* Button ViewTECRA A3/S2 Series Maintenance Manual Mark Table B-1 System board ICs top and bottomTECRA A3/S2 Series Maintenance Manual NumberNumber Table B-2 System board connectors top and bottomTECRA A3/S2 Series Maintenance Manual NameTable C-1 SODIMM I/F pin assignments 200-PIN 1/4 Appendix C Pin AssignmentsSystem Board C.1 JP24,JP25 Signal nameSignal Name Table C-1 SODIMM I/F pin assignments 200-PIN 2/4Signal name TECRA A3/S2 Series Maintenance ManualSignal Name Table C-1 SODIMM I/F pin assignments 200-PIN 3/4Signal name TECRA A3/S2 Series Maintenance ManualSignal Name Table C-1 SODIMM I/F pin assignments 200-PIN 4/4Signal name TECRA A3/S2 Series Maintenance ManualSignal name C.2 JP1Table C-2 RGB I/F pin assignments 15-pin Signal NameSignal name C.3 JP18Table C-3 HDD I/F pin assignments 44-pin Signal NameSignal name C.4 JP31Table C-4 ODD I/F pin assignments 50-pin Signal NameSignal name C.5 JP19Table C-5 PC Card I/F pin assignments 84-pin 1/2 Signal NameS1D0 TECRA A3/S2 Series Maintenance ManualS1D8 Signal Name Table C-5 PC Card I/F pin assignments 84-pin 2/2Signal name TECRA A3/S2 Series Maintenance ManualSignal name C.6 JP28Table C-6 Mini PCI I/F pin assignments 124-pin 1/2 Signal NameTECRA A3/S2 Series Maintenance Manual C-12Signal Name Table C-6 Mini PCI I/F pin assignments 124-pin2/2Signal name TECRA A3/S2 Series Maintenance ManualTECRA A3/S2 Series Maintenance Manual C-14TECRA A3/S2 Series Maintenance Manual C.7 JP6Signal name Pin NoSignal Name C.8 JP29Signal name TECRA A3/S2 Series Maintenance ManualC.10 PJP1 Table C-10 AC Adaptor Connector pin assignments 3-pinC.9 JP12 Table C-9-1 JP12 Fan I/F pin assignments 3-pinC.12 JP22 Table C-12 Headphone Connector pin assignments 6-pinC.11 JP21 Table C-11 Microphone I/F pin assignments 6-pinTECRA A3/S2 Series Maintenance Manual Appendix D Keyboard Scan/Character CodesTable D-1 Scan codes set 1 and set 2 1/4 KeytopKeytop Table D-1 Scan codes set 1 and set 2 2/4TECRA A3/S2 Series Maintenance Manual Code setKeytop Table D-1 Scan codes set 1 and set 2 3/4TECRA A3/S2 Series Maintenance Manual Code setTable D-1 Scan codes set 1 and set 2 4/4 1. * Scan codes differ by modeTable D-2 Scan codes with left Shift keyTECRA A3/S2 Series Maintenance Manual Table D-3 Scan codes in Numlock modeTable D-4 Scan codes with Fn key Code setTECRA A3/S2 Series Maintenance Manual Table D-5 Scan codes in overlay modeTable D-6 No.124 key scan code KeytopKey top Table D-7 No.126 key scan codeTECRA A3/S2 Series Maintenance Manual ShiftFigure E-1 US keyboard Appendix E Key LayoutE.1 United States US Keyboard TECRA A3/S2 Series Maintenance ManualFigure E-2 UK keyboard E.2 United Kingdom UK KeyboardTECRA A3/S2 Series Maintenance Manual Figure E-3 SP keyboard E.3 Spanish SP KeyboardE.4 Japanese JA Keyboard Figure E-4 JA keyboardFigure E-5 KO keyboard E.5 Korean KO KeyboardTECRA A3/S2 Series Maintenance Manual Figure E-6 FR keyboard E.6 French FR KeyboardTECRA A3/S2 Series Maintenance Manual Figure E-7 FR-C keyboard E.7 French-Canadian KeyboardE.8 Portuguese Keyboard Figure E8 Portuguese keyboardFigure E-9 US-INTE Keyboard E.9 US-INTERNATIONAL KeyboardE.10 GreeceGR Keyboard Figure E-10 GR keyboardFigure E-11 CH-T keyboard E.11 Chinese-T KeyboardE.12 Swedish Keyboard Figure E-12 Swedish keyboardFigure E-13 IT keyboard E.13 ITALIAN KeyboardE.14 CZECH Keyboard Figure E-14 Czech keyboardTECRA A3/S2 Series Maintenance Manual E-10Series Screw Torque List Appendix F Series Screw Torque ListTable F-1 TECRA A3/S2 Series Maintenance ManualPage SCREW SPEC TECRA A3/S2 Series Maintenance ManualSCREW P/N LOCATIONTECRA A3/S2 Series Maintenance Manual TECRA A3/S2 Series Maintenance Manual Appendix G ReliabilityTable G-1 MTBF ComponentTECRA A3/S2 Series Maintenance Manual