Acer TM7300 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 2-9 T62.055.C Pin Descriptions

Pin Name Pin Type Pin No. Descriptions

CN1 connector signals

Vhi

Vlo O1

2

This 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 O 2, 9 Contrast adjustment (reserved)

DCIN I 3, 4, 5 This is the input DC voltage to supply the operating power.

Max value: 19VDC

Min value: 7 VDC

BRTADJ O 7 This 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 I 8 A 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 O 12 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 &KDSWHU&KDSWHU System Introduction Page System Introduction 1-3 1.2 Ports 1.2.1 Rear Panel Ports Figure 1-2 Rear Port Location Table 1-1 Rear Port Descriptions 1-4 Service Guide 1.2.2 Left Panel Ports Figure 1-3 Left Port Location System Introduction 1-5 Table 1-2 Left Port Descriptions 1.2.3 Indicator Lights Figure 1-4 Indicator Lights Table 1-3 Indicator Light Descriptions 1-6 Service Guide 1.2.4 Hot Keys Table 1-4 Hot Key Descriptions System Introduction 1-7 Table 1-4 Hot Key Descriptions Table 1-5 Eject Menu Item Descriptions 1-8 Service Guide 1.3 System Specification Overvi ew Table 1-6 System Specifications System Introduction 1-9 Table 1-6 System Specifications Page Page Page Page Page System Introduction 1-15 1.5 Jumpers and Connectors Figure 1-9 Mainboard Jumpers and Connectors (Top Side) 1.5.1 Mainboard 1-16 Service Guide Figure 1-10 Mainboard Jumpers and Connectors (Bottom Side) The following table shows the settings of the mainboards bottom side jumper pads. Table 1-7 Mainboard Jumpers Pads Settings (Bottom Side) 1.5.2 Media Board 1-18 Service Guide 1.6 System Configurations and Speci fi cations 1.6.1 System Memory Map Table 1-8 System Memory Map 1.6.2 Interrupt Channel Map Table 1-9 Interrupt Channel Map 1.6.4 DMA Channel Map Table 1-11 DMA Channel Map 1-20 Service Guide 1.6.5 GPIO Port Definition Map Table 1-12 GPIO Port Definition Map I System Introduction 1-21 Table 1-12 GPIO Port Definition Map I 1-22 Service Guide System Introduction 1-23 1.6.6 PCI Devices Assignment Table 1-14 PCI Devices Assignment 1-24 Service Guide 1.6.7 Power Management System Introduction 1-25 Table 1-15 PMU Timers List 1-26 Service Guide Table 1-15 PMU Timers List HDD power enable pinY15(PX3_HDPON). HDD reset [pinW14(PX3_HDRST#) of PIIX4]. CD-ROM buffer enable [pin-M3 of U21 PX3-FDDBEN of PIIX4]. CD-ROM power control [pin-T14 of U21(PX3_CD/FDPON) of PIIX4]. 1-28 Service Guide Modem power enable. System Introduction 1-29 Devices zero-clocked. Devices brought to a low power state. Devices turned off. System thermal alarm. 1-30 Service Guide Battery very low. Keystroke. Lid switch. Resume on schedule. 1.6.8 CPU Module Table 1-16 CPU Module Specifications System Introduction 1-31 1.6.9 BIOS Table 1-17 BIOS Specifications 1.6.10 System Memory Table 1-18 System Memory Specifications 1-32 Service Guide 1.6.11 Video Memory Table 1-20 Video Memory Specification System Introduction 1-33 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 1.6.13 Audio Table 1-24 Audio Specifications 1.6.14 PCMCIA Table 1-25 PCMCIA Specifications System Introduction 1-35 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 System Introduction 1-37 1.6.20 CD-ROM Table 1-31 CD-ROM Specifications 1.6.21 Diskette Drive Table 1-32 Diskette Drive Specifications 1-38 Service Guide 1.6.22 Hard Disk Drive Table 1-33 Hard Disk Drive Specifications 1.6.23 Keyboard Table 1-34 Keyboard Specifications System Introduction 1-39 1.6.24 Battery Table 1-35 Battery Specifications 1.6.25 DC-DC Converter Table 1-36 DC-DC Converter Specifications 1-40 Service Guide 1.6.26 DC-AC Inverter Table 1-37 DC-AC Inverter Specifications 1.6.27 AC Adapter Table 1-38 AC Adapter Specifications System Introduction 1-41 7100 System Block Diagram . . 32~128MB EDO/SDRAM memory . . 512KB L2 cache memory . 256KB PMU/System/Video BIOS . Intel 430TX Core Logic chipset . NS87338 Super I/O controlle r 970T SYSTEM BLOCK DIAGRAM System Introduction 1-43 1.8 Environmental Requirements Table 1-39 Environmental Requirements 1.9 Mechanical Specifications &KDSWHU&KDSWHU Major Chips Description Major Chips Description 2-1 This chapter discusses the major components. 2.1 Major Component List Table 2-1 Major Chips List 2.2 Intel PIIX4 Major Chips Description 2-3 2-4 Service Guide 2.2.1 Features Page 2-6 Service Guide 2.2.2 Architecture Block Diagram Figure 2-1 PIIX4 Architecture Block Diagram Page 2-8 Service Guide 2.2.4 Pin Descriptions Suspend/Resume and Power Plane Control Major Chips Description 2-9 2-10 Service Guide Major Chips Description 2-11 2-12 Service Guide Major Chips Description 2-13 2-14 Service Guide Table 2-2 82371AB Pin Descriptions Major Chips Description 2-15 PCI DMA 2-16 Service Guide Major Chips Description 2-17 Suspend/Resume and Resume Control Signaling 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 Major Chips Description 2-25 Table 2-2 82371AB Pin Descriptions 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) 2-28 Service Guide 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 2-4 NMA1 Pin Descriptions 2-42 Service Guide Table 2-4 NMA1 Pin Descriptions Page Page Major Chips Description 2-45 2.5.3 Pin Diagram Figure 2-7 87C552 Pin Diagram 2-46 Service Guide 2.5.4 Pin Descriptions Table 2-5 87C552 Pin Descriptions Major Chips Description 2-47 Table 2-5 87C552 Pin Descriptions 2-48 Service Guide 2.6 NS97338VJG Super I/O Contr ol l er 2.6.1 Features Page 2-50 Service Guide 2.6.2 Block Diagram Figure 2-8 NS97338VJG Block Diagram Page 2-52 Service Guide 2.6.4 Pin Description Major Chips Description 2-53 Whenever the MSR DCTS bit is set, an interrupt is generated if Modem Status interrupts are enabled. Whenever the MSR DDCD bit is set, an interrupt is generated if Modem Status interrupts are enabled. 2-54 Service Guide Major Chips Description 2-55 2-56 Service Guide Major Chips Description 2-57 2-58 Service Guide Major Chips Description 2-59 2.7 CL-PD6832: PCI-to-CardBus Host Adapter 2.7.1 Features Page Major Chips Description 2-61 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 2-8 T62.036.C Pin Descriptions 2-74 Service Guide 2.9 Ambit DC-AC Inverter CN1 T62.055.C 1 CN2 2.9.1 T62.055C 2.9.1.1 Pin Diagram 2.9.2 T62.088C 2.9.2.1 Pin Diagram Figure 2-13 T62.088.C Pin Diagram 2.9.2.2 Pin Descriptions Table 2-10 T62.088.C Pin Descriptions 2-76 Service Guide Table 2-10 T62.088.C Pin Descriptions &KDSWHU&KDSWHU BIOS Setup Information 3-2 Service Guide 3.1 About My Computer Table 1-1 About My Computer Parameters BIOS Setup Information 3-3 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 3.3.6 Reset PnP Resources 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 3-10 Service Guide 3.5.2 Diskette Drive Access Control Warning! Contact your dealer to upgrade your BIOS. 3.5.3 Hard Disk Drive Access Control 3.5.4 Start Up Sequences Table 1-2 Start Up Sequences Page &KDSWHU&KDSWHU 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 $S$SSHQGSHQGL[$L[$ Model Number Definition W: HDD & FDD & CD-ROM Model Number Definition A-1 This appendix shows the model number definition of the notebook. TravelMate 7300 VU - W X Y Z Z: Acer or TI logo Page Page Page Page $S$SSHQGSHQGL[&L[& Spare Parts List Spare Parts List C-1 This appendix lists the spare parts of the notebook computer. Table C-1 Spare Parts List C-2 Service Guide Table C-1 Spare Parts List $SSHQGL['$SSHQGL[' Schematics Schematics D-1 This appendix includes the schematic diagrams of the notebook. Table D-1 Schematics Diagram List Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page $SSHQGL[($SSHQGL[( BIOS POST Checkpoints BIOS POST Checkpoints E-1 This appendix lists the POST checkpoints of the notebook BIOS. E-2 Service Guide Note: The keyboard LEDs should flash once. BIOS POST Checkpoints E-3 Note: The FDD LED should flash once and its head should be positioned.