Acer Travelmate 5000 Maintenance Manual

Table 4-2  Self-Test Beep Codes (continued)
Beep Code Port 80h Description
2-3-3 1Ah Bit A, 1ST 64K RAM Failure
2-3-4 1Bh Bit B, 1ST 64K RAM Failure
2-4-1 1Ch Bit C, 1ST 64K RAM Failure
2-4-2 1Dh  Bit D, 1ST 64K RAM Failure
2-4-3 1Eh Bit E, 1ST 64K RAM Failure
2-4-4 1Fh Bit F, 1ST 64K RAM Failure
3-1-1 20h Slave DMA Register Failure
3-1-2 21h Master DMA Register Failure
3-1-3 22h  Master Interrupt Mask Register Failure
3-1-4 23h Slave Interrupt Mask Register Failure
None 25h Interrupt Vector Loading In...

4.2.4 PCMCIA Modem Problems
If an optional PCMCIA modem does not work properly, check the following
items:
·Proper installation of any PCMCIA options (run Phoenix PCMCIA
PhoenixCARD Manager install program).
·Dialing problem or wrong number - Try dialing a number that you have
previously dialed successfully.
·Faulty phone line - Connect a telephone to the line and listen for a dial
tone.
·Software program - Check to ensure that you have installed the
software correctly.
4.2.5 Fault Isolation Using...

Functionally, PC-Doctor includes the following: 
·Group of nine non-Interactive diagnostic tests that perform a
non-destructive test of the major hardware functions in the notebook
(Processor, Memory, System board, video section, serial and parallel
ports (when loopback adapters are installed), hard disk and floppy disk.
·Group of seven Interactive tests (require operator input) for testing the
keyboard, video sections, sound subsystem, mouse, joystick, diskette
drive, printer subsystem and the...

Interactive Tests 
The PC-Doctor diagnostic test includes a suite of seven Interactive tests that
require operator input during the course of the test. The Interactive Tests
category includes: 
·Keyboard- tests the keyboard keys, LEDs and repeat
function 
·Video-tests the LCD and external VGA character sets, and
colors. 
·Speaker-tests the volume response at different frequencies.
·Mouse-tests the mouse driver, buttons and functionality
·Joystick*- calibrates the external joystick connected to the
system...

4.2.5.1 User Interface to PC-Doctor
PC-Doctor is structured as a text-mode, windowed user interface with
pull-down menus. Program operation requires the use of the following keys:
·Cursor Keys- move the highlighted pointer
·ENTER Key- Selects the highlighted option
·ESC Key- Cancels current function and goes back one step
·F1 Key- Activates the context-sensitive help feature (pressing F1 twice
in a row calls up the online Technical Reference Manual for PC-Doctor)
Scrolling windows, which show the results...

4.2.5.3  Running PC-Doctor 
PC-Doctor is a DOS-resident program that can be run from either hard disk
or from the bootable diskette you previously created.   
1.From the C:\ prompt, type:
PCDR
 and press Enter 
2. The Diagnostics Program loads into system memory, and the LCD
displays the diagnostics Header. 
n
Note: There are a number of command-line switches that can be entered
when starting up PC-Doctor to enable loopback testing of serial/parallel
ports, work from the remote menu if performing remote...

5
Field Service
5.1 Introduction
This section contains preventive and corrective maintenance procedures for
the TravelMate 5000 Series Notebook Computers. The first part of the
section describes the computer cleaning procedures and preferred handling
procedures for sensitive components (e.g. disk drives, batteries).
The second part of the section identifies all field replaceable parts; the
remainder of the section contains removal and replacement procedures for
the field replaceable parts. 
5.2...

5.2.3 Handling the Computer Battery Packs
The battery packs furnished with the computer require reasonable care and
handling to ensure efficient operation and maximum life. Periodically
inspect the battery terminals and the batteries for evidence of corrosion and
oxide build-up; clean if necessary.
To ensure that the battery packs endure normal life cycle, always observe
the following precautions when handling the battery packs:
·Do not drop the battery packs or subject them to excessive shock and...

c
Caution: All boards, options and peripherals contain components that
are sensitive to static electricity. When handling any of these items, pro-
tect against static electricity by using wrist or ankle grounding straps
and grounded working mats. When moving or storing items, use the
anti-static bags supplied with the items.
5.4 Notebook Field-Replaceable
Parts and Assemblies
All TravelMate 5000 Series Notebooks contain two major assemblies: 
· System Base Assembly  
· Cover-Display Assembly
The major...

5.4.1 Cover-Display Assembly
As shown in Figure 5-2, the Cover -Display Assembly contains the LCD
screen, Power Inverter Board, Display Adapter Board, Microphone, and four
cable assemblies (Inverter Cable Assembly, TFT Display cable assembly, and
two DAB to Base Cable Assemblies (Left).
The field replaceable components within the Cover Display Assembly are
listed in Table 5-1.
LCD Display Screen
Power Inverter Board
Shown with 
Display Bezel 
Removed
Microphone Assembly
Display Adapter Board (DAB)
Figure...