Compaq XL240 Operating manual

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES REMOVAL SEQUENCE 1
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Removal Sequence
This section describes the removal and replacement process for the Presario 1400 Series Notebook.
The procedures are divided into two subsections: The Customer Removable Parts and The Service
Removable Parts. The first subsection explains which parts may be removed by the customer/owner,
and the second subsection explains which parts should be serviced by the technician.
The Customer Removable Parts
Serial Number
Report your Notebook’s serial number 1to Compaq when requesting information or ordering spare
parts. The serial number is located on the underside of the Notebook as shown below.
ÅWARNING: Prior to servicing your Notebook, disconnect AC power cords and
external devices, and remove the battery pack and any PC Cards. Failure to
disconnect electrical devices may cause damage to the Notebook and loss of
human life.

2 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Electrostatic Discharge
A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive
devices or microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic
device that has been exposed to electrostatic discharge (ESD) may not seem to be affected and
work perfectly throughout a normal cycle. Although the Notebook may function normally for a period
of time, it may have been degraded in the internal layers, reducing the its life expectancy.
Networks built into many integrated circuits provide some protection, but in many cases the
discharge contains enough power to alter device parameters or melt silicon junctions.
Generating Static
The table below shows activities that generate static electricity and the associated level of
electrostatic voltage.
Typical Electrostatic Voltages
Event Relative Humidity
10% 40% 55%
Walking across carpet 35,000 V 15,000 V 7,500 V
Walking across vinyl floor 12,000 V 5,000 V 3,000 V
Motions of bench worker 6,000 V 800 V 400 V
Removing DIPS from plastic tubes 2,000 V 700 V 400 V
Removing DIPS from vinyl trays 11,500 V 4,000 V 2,000 V
Removing DIPS from Styrofoam 14,500 V 5,000 V 3,500 V
Removing bubble pack from PCBs 26,000 V 20,000 V 7,000 V
Packing PCBs in foam-lined box 21,000 V 11,000 V 5,000 V
Note: 700 volts can degrade a product.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES REMOVAL SEQUENCE 3
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Service Considerations
During the disassembly and assembly of your Notebook, please keep in mind the considerations
listed below.
Tool and Software Requirements
Customer serviceable parts only require the following items during disassembly:
•Small standard screwdriver
•Small Phillips screwdriver
•Diagnostics software
Screws
The screws used on the customer removable parts are Phillips. These screws are not
interchangeable. If an incorrect screw is applied during the reassembly process, it can damage the
unit. Compaq strongly recommends that you keep all screws with their respective parts as they are
removed during disassembly. Then replace the screws in their proper locations.
Important: As each subassembly is removed from the Notebook, place it away from the
work area to prevent damage.
Note: Screws inside the Compaq Presario 1400 Series Portable Notebooks vary in size
and are not interchangeable. During reassembly care must be taken to return the
correct screws to their original location. Keep all screws with their respective
subassembly during removal.

4 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Notebook Disassembly
Before beginning The Removal and Replacement Procedures, complete the following steps:
1. Disconnect AC power and any external devices.
2. Remove any PC cards.
3. Remove the battery pack (pg 5).
Å
ÅÅ
ÅWARNING: Battery pack contains harmful components when exposed. Do not
open, crush, puncture, or incinerate the battery pack. It contains no field-
serviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
Ä
ÄÄ
ÄCAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES REMOVAL SEQUENCE 5
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Battery Pack
To remove the battery pack, complete the following steps:
1. Slide the battery compartment door switch 1up to release the door.
2. Simultaneously slide door 2right.
3. Lift door to remove.
Important: The battery pack should be removed before performing any
internal maintenance on the Notebook.
Å
ÅÅ
ÅWARNING: Battery pack contains harmful components when exposed. Do not
open, crush, puncture, or incinerate the battery pack. It contains no field-
serviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
Ä
ÄÄ
ÄCAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.
Continued

6 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
4. Pull up on battery pack ribbon.
5. Disconnect battery pack from connectors.
6. Lift battery pack from compartment.
To replace the battery pack, reverse these procedures.
Å
ÅÅ
ÅWARNING: Battery pack contains harmful components when exposed. Do not
open, crush, puncture, or incinerate the battery pack. It contains no field-
serviceable parts. Dispose of battery packs properly. Failure to dispose of battery
packs properly may cause harm to humans, animals, and their environment.
Ä
ÄÄ
ÄCAUTION: Metal objects can damage the battery pack as well as the battery
contacts in the battery compartment. To prevent damage, do not allow metal
objects to touch the battery contacts. Place only the battery pack for the Compaq
Presario 1400 Series Portable Notebooks into the battery compartment. Do not
force the battery pack into the bay if insertion does not occur easily. Do not open
a battery pack; opening causes damage to the pack, making it unuseable and
exposing harmful battery components.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES REMOVAL SEQUENCE 7
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Cosmetic Side Covers
To remove the Cosmetic Side Covers, complete the following steps:
1. Prepare the Notebook for disassembly (pg 4).
2. Remove one screw located on the side near the back of the unit with a Phillips screwdriver
from the cosmetic side cover, left or right.
3. Slide or shift the cosmetic side cover backward to remove it from the Notebook.
4. Repeat this procedure for the other cosmetic side cover.
Note: To determine left and right sides of the Notebook, as referenced in this guide, face
the front of the unit toward you. As referenced in this guide, your left will be the same as
the Notebook’s left side, and your right will be the same as the Notebook’s right side.
To replace the Cosmetic Side Covers, reverse the procedure.

8 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Speaker Port Covers
To remove the Speaker Port Covers, complete the following steps:
1. Prepare the Notebook for disassembly (pg 4).
2. Remove the cosmetic side covers (pg 7).
3. Remove the upper and lower Speaker Port Covers from chassis.
To replace the Speaker Port Covers, reverse these procedures.

PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES REMOVAL SEQUENCE 9
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Modem/Memory Access Door
To remove the Modem/Memory Access Door, complete the following steps:
1. Prepare the Notebook for disassembly (pg 4).
2. Turn the Notebook upside down.
3. Remove the one screw 1with Phillips screwdriver from the Modem/
Memory Access Door 2.
4. Lift up and remove the Modem/Memory Access Door from the unit.
Note: The illustration may show extra components removed that are
not necessary for this step. Complete only the written steps that are
provided.
To replace the Modem/Memory Access Door, reverse these procedures.

10 REMOVAL SEQUENCE PRESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE 1400 SERIES
Presario 1400 Series
Model XL240, XL241, XL242, XL244, XL245, XL246, XL247, XL250, XL340,
XL341, XL342, XL343, XL344, XL345, XL346, XL350, XL352, XL355, and XL356
Modem or Network/Modem Combo Card
To remove the Modem, complete the following steps:
1. Prepare the Notebook for disassembly (pg 4).
2. Turn the Notebook over.
3. Remove the Modem/Memory Access door from the unit (pg 9).
4. Pull the tab 1on each side of the Modem or Network/Modem Card.
5. Lift and remove the card 2from the chassis.
To replace the Modem, reverse these procedures.