Acer TM7100 Series 2.9 Ambit DC-AC Inverter

2-74 Service Guide

2.9 Ambit DC-AC Inverter

This notebook uses two kinds of DC-AC inverters: One (T62.088.C) is designed for the 13.3-inch

TFT (LG LP133X1) LCD, the other (T62.055.C) for the 12.1-inch TFT (IBM ITSV50D) LCD.

2.9.1 T62.055C

2.9.1.1 Pin Diagram

CN2

CN1 T62.055.C 1

2

21

20 3

2

1

CN3

Figure 2-12 T62.055.C Pin Diagram

2.9.1.2 Pin Descriptions

Table 2-9T62.055.C Pin Descriptions

Pin Name Pin Type Pin No. Descriptions

CN1 connector signals

Vhi

Vlo O1

2This is the High voltage side of the Lamp. (The shorter wire to

lamp connects to this output.

Max lamp start voltage(Vrms): 1300

Typical lamp run voltage @25°C(Vrms): 650

Min open circuit voltage (Vrms): 1100

Max open circuit voltage(Vrms): 1500

CN2 connector signals

GND GND 1, 6 This the return signal for the input power and control signals and

is an extension of the system ground.

CNTADJ O2, 9 Contrast adjustment (reserved)

DCIN I3, 4, 5 This is the input DC voltage to supply the operating power.

Max value: 19VDC

Min value: 7 VDC

BRTADJ O7This is an analog signal in the range of 0 to 3 volts to control the

lamp current.

Vbrite = 1 volt, Lamp current = 50%±10% of Max.

Vbrite = 3volts, Lamp current = Max = 4.5mA

PANEL_ON I8A control pin to control on/off lamp. This input enable the

inverter operation (Lamp On) when high and disables the inverter

when low. This signal is output from a 3.3V CMOS device.

Max loading = 100uA

Logic Low = 0.8 volts Max.

Logic High =1.8 volts Min.

PWRLED O12 This signal is an open collector sink signal to drive LED1. The

LED current is limited by a series resistor of 1KΩ.

Contents

Main Copyright Disclaimer Purpose Manual Structure Appendix D Schematics Appendix E BIOS POST Checkpoints Conventions Table of Contents Chapter 1 System Introduction Chapter 2 Major Chips Description Chapter 3 BIOS Setup Utility Chapter 4 Disassembly and Unit Replacement Page List of Figures Page List of Tables Page C h a p t e r 1C h a p t e r 1 System Introduction Page 1.2 Ports 1.2.1 Rear Panel Ports 1.2.2 Left Panel Ports 1.2.3 Indicator Lights 1-6Service Guide 1.2.4 Hot Keys Table 1-4Hot Key Descriptions System Introduction 1-7 Table 1-4Hot Key Descriptions Table 1-5Eject Menu Item Descriptions 1.2.5 Automatic Tilt System Introduction 1-9 1.3 System Specification Overview Table 1-6System Specifications 1-10 Service Guide Table 1-6System Specifications Page Page Page Page Page 1-16 Service Guide 1.5 Jumpers and Connectors Figure 1-9Mainboard Jumpers and Connectors (Top Side) 1.5.1 Mainboard System Introduction 1-17 1.5.2 Media Board System Introduction 1-19 1.6 System Configurations and Specifications 1.6.1 System Memory Map Table 1-8System Memory Map 1.6.2 Interrupt Channel Map Table 1-9Interrupt Channel Map 1.6.4 DMA Channel Map Table 1-11 DMA Channel Map System Introduction 1-21 1.6.5 GPIO Port Definition Map Table 1-12 GPIO Port Definition Map I 1-22 Service Guide Table 1-12 GPIO Port Definition Map I System Introduction 1-23 1-24 Service Guide 1.6.6 PCI Devices Assignment Table 1-14 PCI Devices Assignment 1.6.7 Power Management Page Page Page 1.6.8 CPU Module 1-32 Service Guide 1.6.9 BIOS Table 1-17 BIOS Specifications 1.6.10 System Memory Table 1-18 System Memory Specifications 1.6.11 Video Memory Table 1-20 Video Memory Specification 1-34 Service Guide 1.6.12 Video Display Modes Table 1-21 Video Display Specification 1.6.12.1 External CRT Resolution Modes Table 1-22 External CRT Resolution Modes 1.6.12.2 LCD Resolution Modes Table 1-23 LCD Resolution Modes System Introduction 1-35 1.6.13 Audio Table 1-24 Audio Specifications 1.6.14 PCMCIA Table 1-25 PCMCIA Specifications 1.6.15 Parallel Port Table 1-26 Parallel Port Specifications 1.6.16 Serial Port Table 1-27 Serial Port Specifications 1.6.17 Touchpad 1.6.18 SIR/FIR Table 1-29 SIR/FIR Specifications 1.6.19 LCD Table 1-30 LCD Specifications 1-38 Service Guide 1.6.20 CD-ROM Table 1-31 CD-ROM Specifications 1.6.21 Diskette Drive Table 1-32 Diskette Drive Specifications System Introduction 1-39 1.6.22 Hard Disk Drive Table 1-33 Hard Disk Drive Specifications 1.6.23 Keyboard Table 1-34 Keyboard Specifications 1-40 Service Guide 1.6.24 Battery Table 1-35 Battery Specifications 1.6.25 DC-DC Converter System Introduction 1-41 1.6.26 DC-AC Inverter 1.6.27 AC Adapter Table 1-38 AC Adapter Specifications 1.7 System Block Diagrams 1.7.1 System Functional Block Diagram 7100 System Block Diagram 7100 System Block Diagram . 2MB video memory . DMI 2.0 with Intel LDCM . NeoMagic NMG4 VGA chip . IBM IrDA/FIR . 32~128MB EDO/SDRAM memory . . 512KB L2 cache memory . 970T SYSTEM BLOCK DIAGRAM 1-44 Service Guide 1.8 Environmental Requirements Table 1-39 Environmental Requirements 1.9 Mechanical Specifications C h a p t e r 2C h a p t e r 2 Major Chips Description 2.1 Major Component List 2.2 Intel PIIX4 Page 2.2.1 Features Page 2.2.2 Architecture Block Diagram Page 2.2.4 Pin Descriptions Major Chips Description 2-9 2-10 Service Guide Major Chips Description 2-11 2-12 Service Guide Major Chips Description 2-13 Table 2-282371AB Pin Descriptions 2-14 Service Guide Major Chips Description 2-15 2-16 Service Guide Major Chips Description 2-17 2-18 Service Guide Major Chips Description 2-19 2-20 Service Guide Major Chips Description 2-21 2-22 Service Guide Major Chips Description 2-23 2-24 Service Guide Table 2-282371AB Pin Descriptions Major Chips Description 2-25 2-26 Service Guide Table 2-2 82371AB Pin Descriptions (continued) Name Type Description Major Chips Description 2-27 Table 2-2 82371AB Pin Descriptions (continued) 2.3 NM2160 2.3.1 Features Page Major Chips Description 2-31 2.3.3 Pin Descriptions Conventions used in the pin description types: 2-32 Service Guide Major Chips Description 2-33 2-34 Service Guide Major Chips Description 2-35 2-36 Service Guide Major Chips Description 2-37 Page Page Page Major Chips Description 2-41 2.4.4 Pin Descriptions Conventions used in the pin description types: Table 2-4NMA1 Pin Descriptions 2-42 Service Guide Table 2-4NMA1 Pin Descriptions Page Page Major Chips Description 2-45 2.5.3 Pin Diagram Figure 2-787C552 Pin Diagram 2-46 Service Guide 2.5.4 Pin Descriptions Table 2-587C552 Pin Descriptions Major Chips Description 2-47 Table 2-587C552 Pin Descriptions 2.6 NS87338VJG Super I/O Controller 2.6.1 Features Page 2-50 Service Guide 2.6.2 Block Diagram Figure 2-8NS87338VJG Block Diagram Page 2-52 Service Guide 2.6.4 Pin Description Major Chips Description 2-53 2-54 Service Guide Major Chips Description 2-55 2-56 Service Guide Major Chips Description 2-57 2-58 Service Guide 2.7 CL-PD6832: PCI-to-CardBus Host Adapter 2.7.1 Features Page 2-62 Service Guide The following table lists the pin descriptions LOCK# Major Chips Description 2-63 2-64 Service Guide Major Chips Description 2-65 2-66 Service Guide Major Chips Description 2-67 2-68 Service Guide Major Chips Description 2-69 2-70 Service Guide Major Chips Description 2-71 2-72 Service Guide 2.8 Ambit T62.036.C DC-DC Converter 2.8.1 Pin Diagram CN1 CN2 T62.036.C Major Chips Description 2-73 Table 2-8T62.036.C Pin Descriptions 2-74 Service Guide 2.9 Ambit DC-AC Inverter CN1 T62.055.C CN2 2.9.1 T62.055C 2.9.1.1 Pin Diagram 2.9.2 T62.088C 2-76 Service Guide Table 2-10 T62.088.C Pin Descriptions C h a p t e r 3C h a p t e r 3 BIOS Setup Information 3-2Service Guide 3.1 About My Computer 3.2 System Configuration 3.2.1 Date and Time 3.2.2 Floppy Drives 3.2.3 Hard Disks 3.2.4 Num Lock After Boot Page 3.3 Advanced System Configuration 3.3.1 Internal Cache 3.3.2 External Cache 3.3.3 Enhanced IDE Features 3.3.4 Onboard Communication Ports 3.3.5 Onboard USB Page 3.4 Power Saving Options 3.4.1 When Lid is Closed 3.4.2 Suspend to Disk on Critical Battery 3.4.3 Display Always On 3.4.5 Resume On Schedule 3.5 System Security 3.5.1 Supervisor and User Passwords 3.5.2 Diskette Drive Access Control 3.5.3 Hard Disk Drive Access Control 3.5.4 Start Up Sequences 3.5.5 Refresh New BIOS Page C h a p t e r 4C h a p t e r 4 Disassembly and Unit Replacement Page 4.1.2 Connector Types Page Page 4.2 Removing the Module 4.3 Replacing the Hard Disk Drive 4.4 Replacing Memory Page Page Page 4.6 Replacing the CPU Page Page Page Page Page Page 4.9 Disassembling the Display Page Page A p p e n d i x AA p p e n d i x A Model Number Definition Model Number Definition A-1 This appendix shows the model number definition of the notebook. TravelMate 7100 VU - W X Y Z Z: Acer or TI logo Y: Keyboard language version Page Page Page Page A p p e n d i x CA p p e n d i x C Spare Parts List Spare Parts List C-1 This appendix lists the spare parts of the notebook computer. C-2Service Guide Spare Parts List C-3 C-4Service Guide A p p e n d i x EA p p e n d i x E BIOS POST Checkpoints BIOS POST Checkpoints E-1 This appendix lists the POST checkpoints of the notebook BIOS. E-2Service Guide BIOS POST Checkpoints E-3