Acer Travelmate 5000 Maintenance Manual

							1.5.2 Diagnostics Program
The TM5000 Series Notebooks are shipped with PC-Doctor, a powerful
diagnostics tool that determines the hardware configuration of a local or
remote system, benchmarks the system’s performance, analyzes the
performance of all subsystems, and performs a suite of interactive and
non-interactive tests on attached devices (such as printers, joystick devices,
VGA monitors, SCSI devices, CD-ROM drives). The test results are stored in
a log which can be printed out (by pressing F2) or saved in a disk file (by
pressing F3). 
Features of the diagnostic program are accessed through a series of
pull-down menus and basic keyboard keys (cursor keys to move highlighted
pointer, Enter key to select a highlighted feature, ESC key to cancel a
function and move back one level.) 
PC-Doctor is typically user friendly but if you don’t understand a feature,
context-sensitive help information is available at any time by pressing the
F1 function key; pressing the F1 function key twice accesses the online
Technical Reference Manual for PC-Doctor. 
A powerful set of utilities within PC-Doctor (that can be run locally or
remotely) simplify the task of determining system configuration data,
allocating and using system memory, IRQ and DMA use, what device drivers
are installed, what COM and LPT ports are assigned and what ports are
available, identifying partitioning data for fixed disk drive(s), determining
the VGA setup information, reading the software interrupts/interrupt
vectors, etc.
n
Note: See Troubleshooting Section for additional information regarding the
Diagnostics Program.  
1.6 Product Models
The initial model of the TravelMate 5000 Series, TI Part No.  9798843, is
equipped with a Pentium Processor, 810 million byte (772MB) Hard Drive
and 10.4 inch TFT color display.  The unit assembly for this product is
available in one of 15 domestic and international configurations as listed in
Table 1.1.
Table 1-1. TravelMate 5000 Series Notebook Domestic/International
Configurations  
Configuration Dash No.
Domestic Configuration -0001 
UK Configuration -0002
  
1-24 General Description 
						

							Table 1-1. TravelMate 5000 Series Notebook Domestic/International
Configurations (continued)  
Configuration Dash No.
German Configuration -0003
French Configuration -0004
Spanish Configuration -0005
Swiss/German Configuration -0006
Italian Configuration -0007
Portuguese Configuration -0008
Western European Configuration -0009
Swedish Configuration -0010
Swiss/French Configuration -0011
Danish Configuration -0012
Norwegian Configuration -0013
Finish Configuration -0014
Belgium Configuration -0015
Austrian Configuration -0016    
Latin American Configuration -0018
  
General Description 1-25 
						

							1.7 Notebook Physical Description
The TravelMate 5000 Series Notebooks are modular in design and can be
disassembled for maintenance purposes using a set of TORXTM head,
Phillips head, and  straight slot screwdrivers as described in Section 5 of
this manual.
Mechanically, the Notebook Computer consists of two major assemblies
including the Cover -Display Assembly and the System Base Assembly as
shown in Figure 1-13.
Cover-Disp lay 
Assembly
System Base Assembly
Figure 1-13  Notebook Major Assemblies
  
1-26 General Description 
						

							1.7.1 Cover-Display Assembly
The Cover -Display Assembly contains the LCD screen, power inverter
circuits, and associated control circuitry. The assembly, shown in Figure
1-14, contains four major components including:
·LCD Display
·Microphone Assembly
·Inverter Board
·Display Adapter Board
The Cover -Display Assembly attaches to the System Base Assembly through
seven mounting screws on the bottom of the computer and two screws that
secure the hinges to the Cover -Display Assembly (See Section 5 for
additional detail).
LCD Display Screen
Power Inverter Board
Shown with 
Display Bezel 
Removed
Microphone Assembly
Display Adapter Board (DAB)
Figure 1-14  Cover Display Assembly FRUs
  
General Description 1-27 
						

							1.7.2 System Base Assembly
As shown in Figure 1-15, the System Base Assembly houses a variety of
field-replaceable subassemblies and components including:   
·Main Board Assembly
·PCMCIA/Sound Board Assembly
·Sleep Switch Board Assembly
·LED Board Assembly
·Infrared Board Assembly
·Keyscan Board Assembly
·Keyboard Assembly
·Hard Disk Drive Assembly
·Floppy Diskette Drive Assembly
·The Point Assembly
·Internal Battery Packs
n
Note: FRU part numbers and assembly removal/replacement procedures
are provided in Section 5 of this manual. Factory-level parts listings are pro-
vided in Section 6. 
Internal Speaker Assembly
PCMCIA/Sound Board Assembly
Floppy Drive Assembly
Keyscan Board Assembly
Battery Bays Sleep Switch Board Assembly
IR Interface Board
Assembly LED Board
Assembly
Main Board Assembly
(at base of unit)
Hard Drive (Under PCMCIA/Sound Board)
Figure 1-15  Exploded View of Notebook Base Assembly
  
1-28 General Description 
						

							1.8 Notebook Functional Overview
The TravelMate 5000 Series Notebooks consist of eight major functions or
sections including:
·System Processor- implemented on Main Board 
·Memory Subsystem- implemented on Main Board
·I/O Subsystem- implemented on Main Board 
·Keyboard Subsystem- implemented on part of Main Board, Key Scan
Board, and Keyboard Assembly
·Video Subsystem- implemented on Main Board, Display Adapter Board,
and LCD Display
·Sound Subsystem- implemented on the PCMCIA/Sound Board 
·PCMCIA Adapter and sockets- implemented on PCMCIA/Sound Board
·Pointing Device Subsystem-implemented on Main Board and Keyboard
Assembly
·Hard Disk Subsystem- implemented on Main Board and the Hard Drive
Assembly 
·Floppy Disk Subsystem- implemented on Main Board and Floppy Drive
Assembly
·Power Subsystem- implemented on Power Supply Board, Inverter Board,
battery packs, front panel LEDs, and AC adapter
A simplified block diagram of the computer is shown in Figure 1-16.
  
General Description 1-29 
						

							Figure 1-16  TM5000 Series, Functional Block Diagram
  
1-30 General Description 
						

							1.8.1 System Processor 
The System Processor function for the notebook is implemented on the Main
Board using  an Intel Pentium P54-C Superscalar Processor Chip. The
processor operates in conjunction with RAM and ROM Memory and other
control logic (E.G. the ACC2056 IC) to process software instructions (BIOS,
DOS, Windows, Applications).   
The processor communicates with hard disk and the memory components
using a high speed, VL-Local Bus.  All other high speed peripheral
components are driven by the 33-MHz PCI Bus.
The PCI Bus Controller Chip (ACC2188) provides the bridge between the
64-bit VL-Local Bus and the 32-bit, 33 MHz Peripheral Components
Interface (PCI) Bus. 
The Processor also executes the BatteryPro software and interacts with
other hardware logic to provide the power savings features for the notebook.
These features include controlling CPU clock speeds, reducing clock speeds
whenever possible (eg. when performing floppy drive accesses), powering
down unused devices, etc. 
1.8.2 Memory Subsystem
The memory subsystem, implemented on the Main Board,  includes ROM
and DRAM memory. Primary control for the memory subsystem is provided
by the ACC2056 Core Logic Chip. 
1.8.2.1 DRAM Memory
All Pentium-based notebooks (Intel P54-C CPU) contain 8MB of 70 ns
page-interleaved DRAM and 256KB of 15-ns static RAM for external cache.
DRAM memory on the Pentium versions can be expanded to 32 MB using
two DRAM Expansion Board options. An additional 24 MB may be user
installed using a 16 MB Expansion RAM Module and an 8 MB Shuttle RAM
Expansion Module described in more detail later.
1.8.2.2 ROM Memory
All versions of the TM5000 notebook family use a Flash ROM that contains
both the main system BIOS and the VGA BIOS.  The Flash ROM contains
Boot Block logic that allows downloading new versions of BIOS without
destroying the Boot Load area.
  
General Description 1-31 
						

							1.8.3 I/O Subsystem
The I/O ASIC on the Main Board and an SMC 37C665 GT Combo I/O
Controller Chip control all AT-type I/O peripherals. Two cascaded DMA
controllers and two cascaded interrupt processors on the I/O ASIC support
transfers between memory and the 8-bit and 16-bit peripherals (via the
Combo Controller). The supported I/O interfaces include:
·Internal Hard Disk Drive Interface - Provides control information and
data exchange (via an integrated drive electronics (IDE)-type interface)
between the computer and the system disk drive.
·Internal Floppy Diskette Drive Interface - Provides control and data
exchange between the computer and the 3.5 inch floppy diskette drive.
·Internal Pointing Device Interface- internal controller that interfaces the
built-in pointing device with the system processor.
·External Parallel Bi-Directional/ECP/EPP Compatible Interface -
Provides control information and data exchange between the computer
and external parallel peripheral devices via an external DB-25 Port (this
port is configured from the Setup program). The parallel port is
compatible with the port used in the PC-AT but also features the PS/2
like extended mode for bi-directional EPP/ECP operations.
·External Serial Port Interface- includes a 16550-compatible UART that
drives an external RS-232 port (configured from the Setup Program).
·External PS/2 Keyboard/Mouse Port- six-pin Mini-DIN connector on the
rear of the Notebook which can attach to either an external PS/2
keyboard (or 101 keyboard with adapter), external PS/2 type mouse, or
external numeric keypad (only one of the three device types may
connect to the 6-pin connector).
1.8.4 AT Peripherals Subsystem
The interface between the system processor and the Floppy and Serial and
Parallel ports is provided by the FDC37C665GT combination controller. 
1.8.5 Video Subsystem
The video subsystem, implemented on the Main Board and on the LCD
Display Unit, displays text, graphics and drives an external VGA port.
The video subsystem includes 2 MB RAM memory, 32-bit DRAM bus, and
separate display and memory clocks. An additional frame buffer/accelerator
DRAM increases the available memory bandwidth for CPU accesses. The
video section also uses additional levels of write FIFOs, a read cache, page
mode DRAM and full 32-bit bus access to produce a high performance video
system.
The CL-GD7542 video controller chip used in the TM5000 Notebooks also
supports multi-media capabilities using the MotionVideo 
tm Architecture
(MVATM). This feature permits integrating video clips or live video. In
  
1-32 General Description 
						

							addition to powerful multi-media capabilities, the video controller offers full
hardware and BIOS compatibility with the IBM VGA standard.  
1.8.6 External VGA Capability
All members of the TM5000 notebook family provide a 15-pin, female,
D-type,  external VGA connector that can be connected to an external video
graphics adapter (VGA) type monitor.
Another feature of the notebook computer is the ability to provide both an
LCD display and simultaneously drive an external CR T (standard VGA
modes) with resolution of 640 X 480 X 256.
1.8.7 Sound Subsystem
The TravelMate 5000 Series Notebook is equipped with the Media-Vision
Jazz tm 16 chip set that is Sound Blaster tm and Sound Blaster Pro tm
compatible. An internal speaker and microphone provide the Notebook with
direct sound generation and recording capabilities. A set of 3.5 mm bayonet
socket connectors allow for external microphone and line inputs and
headphone outputs.
A MIDI adapter cable option permits attaching musical instruments (with
digital interface) to the notebook via the EZ-Dock Plus Port Replicator option.
The sound subsystem also includes a variety of Window’s-based
multi-media software and DOS Utilities that combine to provide the
following multi-media functions: 
·Digital audio recording and playback 
·Audio mixing- can mix five audio sources for playback (MIDI, CD-ROM,
Line In, playback waveform files and a microphone). Can mix three
sources for recording (CD-Player, Line In and Microphone) 
·20 voice FM music synthesizer (plays up to 20 instruments
simultaneously to deliver an orchestra of stereo sound)
  
General Description 1-33