Compaq presario 1200xl schematic

Presario 1200XL Series

Model XL300, XL300A, and XL300B

Removal Sequence

This chapter provides details for removing and replacing each component of the Presario 1200XL units.

Electrostatic Discharge

When removing or replacing parts, be careful to discharge static electricity before touching the internal Notebook components. A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices and microcircuitry. Often the spark is neither felt nor heard, but damage occurs. An electronic device exposed to an electrostatic discharge may not seem to be affected and continue to work perfectly throughout a normal cycle. However, the discharge degrades internal layers, which reduces the operating life of the device. 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.

The table below shows the amount of static electricity generated by common activities associated with servicing computers.

Electrostatic Voltage

Event

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

Motion 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

CAUTION:

ground yourself before touching the Notebook or its subassemblies.

As little as 700 Volts can degrade Notebook components. Be sure to

Relative Humidity

10% 40% 50%

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Tool and Software Requirements

The following items are required to service the Notebook:

• Torx T-9 screwdriver

• 5mm nut drivers (for screwlocks and standoffs)

• Small standard screwdriver

• Small Phillips screwdriver

• Diagnostics software

Screws

The screws used in the Notebook are not interchangeable. If an incorrect screw is used during the reassembly process, it can damage the unit. Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations.

Important: As each subassembly is removed from the Notebook, place it away from the work area to prevent damage.

Connectors and Plastic Parts

Plastic parts can be damaged by the use of excessive force during disassembly and reassembly. When handling plastic parts, use care. Apply pressure only at the points designated in the instructions. Most of the connectors in these Notebooks are

ZIF Connector

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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

ZIF Connector

The 1200XL Series Notebooks use zero insertion force (ZIF) connectors on the system board.

CAUTION:

only the connector slide when removing or replacing a cable. Never pull or twist on the cable while it is connected.

A ZIF connector and its attached cable can be easily damaged. Handle

To remove a cable from a ZIF connector, lift both corners of the ZIF connector and slide the cable out simultaneously with constant light pressure.

CAUTION:

proper location during the reassembly process. Improper cable placement can damage the Notebook.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

When servicing this Notebook, ensure that cables are placed in their

1200XL S

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EMOVAL SEQUENCE

Presario 1200XL Series

Model XL300, XL300A, and XL300B

Cables

Most cables used throughout the unit are ribbon cables.

Cables must be handled with extreme care to avoid damage. Use the following precautions when handling cables to avoid damage to the cable and the Notebook:

• Always handle cables by their connectors.

• In all cases avoid bending, twisting, pulling, or tearing cables.

• Apply only the minimum pressure required to seat or unseat cables from their

connectors.

• Place the cables so that they are not caught or snagged by parts being removed or

replaced.

• Handle flex cables with extreme care; they can tear easily.

CAUTION:

proper location during the reassembly process. Improper cable placement can cause severe damage to the unit.

When servicing these Notebooks, ensure that cables are placed in their

The following illustrations show the proper placement for each cable:

• Diskette Drive Ribbon Cable

• Keyboard Ribbon Cable

• Speaker Assembly Cable • Hard Drive Ribbon Cable

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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

1200XL S

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Diskette Drive Ribbon Cable

The ribbon cable position for the diskette drive is shown below.

CAUTION:

proper location during the reassembly process. Improper cable placement can damage the Notebook.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

When servicing this Notebook, ensure that cables are placed in their

1200XL S

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EMOVAL SEQUENCE

Presario 1200XL Series

Model XL300, XL300A, and XL300B

Speaker Assembly Cable

The cable position for the speaker assembly is shown below. The cable is routed under the battery charger board and under the edge of the system board.

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CAUTION:

proper location during the reassembly process. Improper cable placement can damage the Notebook.

When servicing this Notebook, ensure that cables are placed in their

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

1200XL S

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Keyboard Ribbon Cable

The ribbon cable position for the keyboard is shown below.

CAUTION:

proper location during the reassembly process. Improper cable placement can damage the Notebook.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

When servicing this Notebook, ensure that cables are placed in their

1200XL S

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EMOVAL SEQUENCE

Presario 1200XL Series

Model XL300, XL300A, and XL300B

Hard Drive Ribbon Cable

The ribbon cable position for the hard drive is shown below.

Note:

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CAUTION:

proper location during the reassembly process. Improper cable placement can damage the Notebook.

When servicing the Notebook, ensure that cables are placed in their

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

1200XL S

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Preparing the Notebook for Disassembly

Before beginning Removal and Replacement procedures, complete the following steps:

1. Disconnect AC power and any external devices.

2. Remove the battery pack (pg 10

3. Remove any PC cards.

Important: The battery pack should be removed before performing any internal maintenance on the Notebook.

WARNING: 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 1200XL Series Portable Notebooks into the battery compartment. Do not force the battery pack into the bay if insertion is difficult.

CAUTION:

battery pack; this action damages the pack, makes it unusable, and exposes potentially harmful battery components. No field-serviceable parts are located inside the battery pack.

Note: Compaq Presario 1200XL Series Portable Notebooks have several screws of various sizes that are not interchangeable. Care must be taken during reassembly to ensure that the correct screws are used in their correct location. During removal, keep screws with their associated respective subassembly.

Do not crush, puncture, or incinerate the battery pack. Do not open a

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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EMOVAL SEQUENCE

Presario 1200XL Series

Model XL300, XL300A, and XL300B

Removing the Battery

To remove the battery pack, complete the following steps:

1. Slide

2. Pull and slide battery from the chassis.

the battery compartment door down and remove it from the chassis.

the battery from the chassis by the tab located on the end of the battery pack

To replace the battery, reverse these procedures.

Important: The battery pack should be removed before performing any internal maintenance on the Notebook.

WARNING: 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 Compaq Presario 1200XL Series Portable Notebooks in the battery compartment. Do not force the battery pack into the bay if insertion does not occur easily.

CAUTION: Do not crush, puncture, or incinerate the battery pack. Do not open a

battery pack; this damages the pack, makes it unusable, and exposes potentially harmful battery components. No field-serviceable parts are located inside the battery pack.

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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Removing the Modem

To remove the modem, complete the following steps:

1. Prepare the Notebook for disassembly (pg 9

2. Close the display, turn the Notebook upside down, and locate the modem compartment (left side when the front of the Notebook is toward you).

3. Remove one screw

from the modem door, slide the door forward 2 and then lift to

remove it.

Continued on the next page.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

4. Press the release latches 1 on each side that hold the modem in place. This releases the modem board from the compartment.

5. Lift

the modem from the system board connector.

To replace the modem board, reverse these procedures.

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RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Removing the Memory Module

To remove the memory module, complete the following steps:

1. Prepare the Notebook for disassembly (pg 9

2. Close the display and turn the Notebook upside down.

3. Remove the screw from the memory compartment.

4. With the front of the Notebook facing you, slide the door to the left and lift.

5. Pull

the side levers to release the memory module and lift 2 it off the connector on

the system board.

To replace the memory module, reverse these procedures.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

Removing the Palmrest Cover with TouchPad

Note: It is not necessary to remove the display panel assembly to access the interior components of the Notebook.

To remove the Palmrest Cover with TouchPad, complete the following steps:

1. Prepare the Notebook for disassembly (pg 9

2. Close the display and turn the Notebook upside down.

3. Remove four screws from underneath the Notebook.

Continued on next page.

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Presario 1200XL Series

Model XL300, XL300A, and XL300B

4. Turn the Notebook right side up.

5. Pull the display release latches and open the display assembly.

6. Lift up underside of the Palmrest LED and Volume Control board.

7. Lift the cover off the unit.

the front end of the Palmrest Cover, 2 disconnect the flex cable from the

To replace the Palmrest Cover with TouchPad, reverse these procedures.

RESARIO NOTEBOOK MAINTENANCE AND SERVICE GUIDE

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