Fic mb02 Service Manual CHAP5
Chapter
Maintenance & Disassembly
5.1 Introduction
This section contains preventive and corrective maintenance procedures for the MB02
notebook. The first part of the section describes the computer cleaning procedures and
preferred handling procedures for sensitive components (e.g. disk drives, LCD, CPU,
batteries).
The second part of the chapter identifies all field replaceable parts with the remainder
explaining the removal and replacement procedures for the field replaceable parts.
5.2 Preventive Maintenance
Preventive maintenance is limited to cleaning the plastic case, the keyboard, and the display
screen and cleaning the floppy drive heads as required.
5.2.1 Cleaning the Computer
When it is necessary to clean the plastic case and keyboard, use a soft lint-free cloth, slightly
dampened with a mild detergent solution, or use the contents of any commercially available
computer cleaning kit.
i Never use alcohol, petroleum-based solvents, or harsh detergents to clean the
notebook. Also, do not spray any liquids directly on the computer case,
keyboard, or screen. If the liquid-crystal display (LCD) screen has become
smeared or dusty, clean the screen by first applying a mild glass cleaner to a
soft, clean, lint-free cloth, and gently wipe the glass. Never apply liquids directly
on the screen surface. Moreover, do not use paper towels to clean the display
screen. Paper can scratch the display screen matte.
5.2.2 Maintaining the LCD Quality
When it comes to screen problems, heat plays a big part. After a good working session, the
typical routine is to shut the machine and close the cover. But the display surface - no matter
what type it is - and the components inside the computer radiates heat; when you close the
cover, you trap the heat against the screen. Leave the computer's cover open for about ten
minutes while the heat disperses. Make this a habit.
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Maintenance & Disassembly
5.2.3 Maintaining the Hard Disk Drive
The hard disk drive is one of the most common parts that always gets problem. Here is some
preventive maintenance that you can do when handling the hard disk.
• Always back up the data files from the hard disk.
• Run a virus detecting program for possible virus infected area on the hard disk.
• Use SCANDISK to correct any errors found in the directory and File Allocation Table
(FAT). This will also free up space from any unused sectors.
• Never turn the computer off when the hard disk is being accessed.
• Never move or raise the computer while the hard disk is being accessed, most especially
don't jar the hard disk as this may cause a hard disk crash.
• Use hard disk system tools like Disk Defragmenter under Windows. This reorganizes
your hard disk by eliminating fragmentation and improves the hard disk access time.
5.2.4 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.
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 vibration.
• Do not expose the battery packs to direct sunlight, moisture, or chemical compounds.
• Do not disassemble the battery packs.
• Do not use the battery packs to power other devices.
• Do not short the battery leads or connect the battery with reversed polarity.
• Never attempt to charge the battery packs in any way other than as described in this
manual and the User’s Manual.
• Always charge the battery packs as soon as possible after a low battery indication.
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Maintenance & Disassembly
5.3 Required Tools and Equipment
To troubleshoot and repair PC systems properly, you need a few basic tools:
• Tweezers
• Small flat-blade screwdriver
• Small Cross screwdriver
• Regular size Cross screwdriver
• Small Hex-bolt screwdriver
i All boards, options, and peripherals contain components that are sensitive to
static electricity. When handling any of these items, use wrist or ankle grounding
straps and grounded working mats. When moving or storing items, use the antistatic bags supplied with the items.
5.4 Notebook Field-Replaceable Parts and Assemblies
The notebook contains two major assemblies: The Cover Display LCD Assembly and the
System Unit Assembly.
Color LCD Display
Œ
•
’
Integrated
Microphone
Power On/Resume
Button
Figure 5-1 Cover Display and System Unit Assembly
Built-in Stereo
•
Speakers
Status LED Indicator
•
➑
Keyboard
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Easy Buttons
Ž
‘
❾
Built-in Stereo
Touchpad Pointing
Speakers
Device
Maintenance & Disassembly
5.4.1 Cover-Display LCD assembly
The Cover-Display LCD Assembly includes the following major Field Replaceable
Units/parts (FRUs):
• LCD Face and Back Panel Cover
These parts are used to cover the whole LCD Panel assembly, which includes the LCD
Display Module, the LCD FPC cables, and inverter board.
• LCD Display Module
“13.3” LCD (Liquid Crystal Display) screen is used for output display. This part is
assembled together with LCD Power Inverter Board, and LCD cables contained inside the
whole LCD Panel. Handle this part with care against static electricity and accidents that
can break the LCD.
• LCD Power Inverter Board
This part or PCB (Printed Circuit Board) is used to provide high voltage to the CCFT
(Cold Cathode Fluorescent Tube) of the notebook’s LCD backlighting. It is connected to
the right side of the LCD display screen and attached to the back panel by a screw.
Exercise safety electrical precautions in handling and servicing this part. The circuit board
also includes the function for displaying the power status and battery charge LED
indicators.
• LCD FPC Cable
The LCD FPC cable is used to convert output signals from the motherboard in driving the
LCD display screen. The cable is connected to the back of the LCD Panel.
5.4.2 System Unit Assembly
The System Unit Assembly comprise of several assemblies of which can be divided into two
major sub-assemblies.
• The System Top Unit Assembly.
• The System Base Unit Assembly.
The following System Top Unit Assembly includes the following major Field Replaceable
Units/parts (FRUs):
• Glidepad Touch Pad Module Assembly
The touch pad (glide pad) pointing device module is assembled at the underside of the top
cover with the sensor pad exposed on the top. The assembly comprises of the glide pad
board, the glide pad converter board, the select buttons bracket casing, the insulator sheet,
the glide pad FPC cable, and the glidepad wire cable. The glide pad board is assembled
just underneath the select button assembly. It provides a FPC cable connector for the
mother board.
• Keyboard Panel Assembly
The keyboard is assembled on top of the system unit and connected to the main board ’s
keyboard FPC type connector. The keyboard is also secured on the system’s top unit
casing. There are no screws attached to the keyboard.
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