HP M300 Service Manual

chapter

5

EMOVAL AND REPLACEMENT

R

ROCEDURES

P

5.1 Serial Number

The computer serial number should be reported to Compaq when requesting
information or ordering spare parts. The serial number is located on the bottom of the
computer (Figure 5-1).

Figure 5-1.

Serial Number Location

Removal and Replacement Procedures 5-1

5.2 Disassembly Reference Chart

Use the chart below to determine the section number to be referenced when removing
components from the computer.

5.3 Disconnecting the Computer from the Mobile Expansion Unit

5.4 Disconnecting the Computer

5.5 Preparing the Computer for Disassembly

5.6 Battery Packs

Removing the Battery Pack

Replacing the Battery Pack

5.7 Hard Drives

Removing a Hard Drive

Inserting a Hard Drive

5.8 PC Cards

Removing a PC Card

Inserting a PC Card

5.9 Modem or Modem/NIC Card

5.10 Real Time Clock Battery

5.11 Keyboard

5.12 Memory Expansion

Removing Memory Expansion Boards

Installing Memory Expansion Boards

5.13 Switch Cover

5.14 Display Assembly

5.15 Top Cover with TouchPad

5.16 Voltage Converter Board

5.17 Modem Connector Board

5.18 PC Card Connector

5.19 Processor/System Board Assembly

Figure 5-2.

Disassembly Reference Chart

5-2 Removal and Replacement Procedures

5.3 Disconnecting the Computer from the Mobile
Expansion Unit

1.

Turn off the computer.

2.

Close the display.

3.

Turn off and disconnect all external devices connected to the computer.

4.

On the mobile expansion unit, press the docking release button ➊ to release the
expansion unit from the computer (Figure 5-3).

5.

Lift the rear end of the computer to disconnect it from the computer expansion

➋

connector

6.

Pull the computer away from the mobile expansion unit tabs

.

.

Figure 5-3.

Disconnecting the Computer from the Mobile Expansion Unit

Removal and Replacement Procedures 5-3

5.4 Disconnecting the Computer

➊

➋

.

(Figure 5-4).

1. Disconnect the AC power cord from the AC adapter

2. Unplug the power cord from the electrical outlet

3. Disconnect the AC adapter from the power connector on the left side of computer

➌

.

Figure 5-4.

5-4 Removal and Replacement Procedures

Disconnecting the Computer

5.5 Preparing the Computer for Disassembly

1. Disconnect the computer from the mobile expansion unit.

2. Shut down the computer.

3. Disconnect the AC adapter and all external devices connected to the computer.

4. Remove the battery pack (Section 5.6).

CAUTION:

battery pack before removing and installing internal components can damage the
equipment.

Failure to disconnect the AC Adapter from the computer and to remove the

5. Remove the hard drive (Section 5.7).

6. Remove all PC Cards (Section 5.8).

Removal and Replacement Procedures 5-5

5.6 Battery Packs

WARNING:

!

puncture, or incinerate the battery pack or short the metal contacts. Do not attempt to open
or service the battery pack.

To reduce the risk of injury or damage to the battery pack, do not crush,

Removing the Battery Pack

1.

Shut down the computer.

2.

Turn the computer upside down.

3.

Tilt the battery pack so it lies flat.

4.

Slide in the two battery latches toward each other

5.

Rotate the battery pack 90 degrees toward the computer

➌

pack from the computer

.

➊

(Figure 5-5).

➋

,

and lift up the battery

Figure 5-5.

5-6 Removal and Replacement Procedures

Removing the Battery Pack

Replacing the Battery Pack

WARNING:

!

computer is fully reassembled.

1.

Turn the computer upside down.

2.

Push the battery pack onto the computer until the contacts connect ➊, and rotate the
battery pack 90 degrees toward the back of the computer

3.

Slide the two battery latches out (away from each other) ➌.

To prevent damage to the computer, do not insert a battery pack until the

➋

(Figure 5-6).

Figure 5-6.

Replacing the Battery Pack

Removal and Replacement Procedures 5-7

5.7 Hard Drives

Removing a Hard Drive

Before removing a hard drive, back up all information on the hard drive.

1.

Shut down the computer.

2.

Turn the computer upside down.

3.

Remove the hard drive screw

4.

Pull up on the front bezel ➋.

5.

Slide the hard drive out of the bay

➊

(Figure 5-7).

➌

.

Figure 5-7.

5-8 Removal and Replacement Procedures

Removing a Hard Drive

Inserting a Hard Drive

1.

Shut down the computer.

2.

Turn the computer upside down.

3.

Pull the bottom half of the bezel down.

4.

Slide the hard drive into the bay until the connector is seated

5.

Push the front bezel down ➋.

6.

Insert the hard drive screw

➌

.

➊

(Figure 5-8).

Figure 5-8.

Inserting a Hard Drive

Removal and Replacement Procedures 5-9