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b
Maintenance & Service Guide
Prosignia Desktop 340 Series Computer
Document Part Number: 320695-001
December 2002
This document provides the reader with basic information for maintaining
the computer. It contains detailed instructions for the removal and
replacement of all components, spare part numbers for all replacement
parts, information on clearing and setting passwords, and instructions for
resetting CMOS.
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Contents
1.1 System Design. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2 Computer Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2.1 Front Panel Controls and LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–2
1.2.2 Rear Panel Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–3
1.3 Serial Number Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1–4
2.1 System Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–2
2.2 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–4
2.3 Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–6
2.4 Standard and Optional Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–8
2.5 Miscellaneous Parts. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–10
2.6 Keyboards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
2.7 Monitors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2–11
3.1 Electrostatic Discharge Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.1.1 Generating Static . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–1
3.1.2 Preventing Electrostatic Damage to Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
3.1.3 Personal Grounding Methods and Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–2
3.1.4 Grounding Workstations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3
3.1.5 Recommended Materials and Equipment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–3
3.2 Routine Care . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4
3.2.1 3.2.1 General Cleaning Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4
3.2.2 Cleaning the Computer Case . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4
3.2.3 Cleaning the Keyboard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–4
3.2.4 Cleaning the Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.2.5 Cleaning the Mouse . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.3 Service Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.3.1 Tools and Software Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–5
3.3.2 Screws . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.3.3 Cables and Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.3.4 Hard Drives . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.3.5 Plastic Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
3.3.6 Lithium Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3–6
4.1 Preparation for Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–1
Contents
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Contents
4.2 Hood . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–2
4.3 Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–3
4.4 Mass Storage Devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–4
4.4.1 CD (Optical) Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–5
4.4.2 Diskette Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–7
4.4.3 Hard Drive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–9
4.5 Video Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–11
4.6 Network Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–12
4.7 Fax/Modem Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–13
4.8 Memory Module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–14
4.9 RTC Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–15
4.10Processor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–16
4.11Front Bezel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–17
4.12On-Button Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–18
4.13System Board Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–19
4.14System Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–20
4.151/O Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4–21
5.2 Clearing and Setting Passwords . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–2
5.3 Resetting CMOS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5–3
Contents
iv
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Product Description
1.1 System Design
This section presents a functional descriptions of the key components of the Compaq Prosignia
340 Series Computer. All replaceable components are identified in Chapter 2, and removal and
replacement instructions are presented in Chapters 3 and 4.
1.2 Computer Features
The Compaq Prosignia 340 Series Computer ships with a mouse and keyboard. A Compaq color
monitor or other compatible monitor, which is also required to operate the computer, does not
ship with the computer.
1.2.1 Front Panel Controls and LEDs
1
2
3
4
5
6
7
8
Diskette Drive
Activity Light - illuminates when the diskette drive is reading or writing
Eject Button
* CD Drive
* CD Drive Activity Light - illuminates when the CD drive is reading
* Manual Eject Hole - for ejecting a CD disk when the eject button fails
* Load/Eject Button
Hard Drive Activity Light - illuminates when the hard drive is reading or
writing
9
:
Power on Light
Power on Button
*CD-ROM models only
1–2
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Product Description
1.2.2 Rear Panel Connectors
1
2
3
4
5
5
7
8
9
-
;
<
=
>
?
@
A
Mouse
Keyboard
USB Ports
Serial Port
Parallel Port
2nd Serial Port
Audio Out
Game Port
Audio In
Microphone
Video
AC Power
Voltage Select Switch
AGP Card Slot
PCI Card Slot
PCI Card Slot
PCl/ISA Combination Slot
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Spare Parts
System Unit
Item
1
Description
Spare Part
Front Bezel with bezel blank and power button
149804-001
149800-001
not spared
2
Hood sssembly
Chassis
3
4
System rear I/O panel
Power supply
149805-001
136337-001
5
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Spare Parts
Mass Storage Devices
Spare Part
Item
Description
1
Diskette drive
136338-001
Hard drive, 5400 RPM
2
*
*
*
4.3 GB
8.4 GB
161431-001
168027-001
161432-001
168591-001
13 GB, with mounting screws
17 GB, with mounting screws
Optical drives
3
*
*
*
8/4/32C CD-RW drive
294401-001
400807-001
386128-001
161430-001
40X CD-ROM drive
10X DVD drive with mounting screws
10/40X DVD drive
Other drives
*
*
Zip 100 drive
Zip 250 drive
386561-001
125776-001
*Not shown
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Spare Parts
Cables
Item
Description
Spare Part
1
Power switch with cable and LEDs
Power cord, U.S.
136340-001
142766-001
146019-001
*
Miscellaneous cable kit, includes
2
*
*
*
Hard drive cable, 10.5” (108950-007)
Diskette drive cable , 15.5”, (105875-001) (N/A this product)
Dual LED/Power cable (387662-001) (N/A this product)
Dual device hard drive cable (1308950-005) (N/A this product)
Miscellaneous cable kit, includes
298856-001
3
Optical drive cable, 14” (242947-001)
Diskette drive cable
4
Diskette drive cable
161735-001
177707-001
Miscellaneous cable kit, includes
*
*
*
Audio cable, 21”, (288489-002)
IDE cable, 12.5” (179048-001) (N/A this product)
NIC wake up cable (179056-001) (N/A this product)
*Not shown
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Spare Parts
Standard and Optional Boards
Item
Description
Spare Part
1
System board
187672-001
Intel processor with heatsink and heatsink retaining clip
2
466 MHz Celeron
533 MHz Celeron
550 MHz Pentium III
600 MHz Pentium III
174742-001
176220-001
176221-001
176222-001
Memory module
3
32 MB
64 MB
128 MB
166890-001
179190-001
166966-001
*
*
Modems
4
56K, V.90 International PCI modem
56K PCI controllerless modem
56K PCI controllerless modem
166358-002
167491-001
146803-001
*
*
Network Interface Cards
*
*
*
*
PCI 10/100 Base-T NIC with remote wakeup
179167-001
116188-001
177454-001
167132-001
Intel Pro 10/100 NIC
Compaq 10/100 NIC
11 MB/sec PCI wireless LAN
*Not shown
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Spare Parts
2.5 Miscellaneous Parts
Miscellaneous Parts
Item
1
2
3
*
Description
Spare Part
161734-001
149807-001
166861-001
304284-001
125773-011
125773-021
125773-391
125773-031
125773-001
135426-011
135426-021
135426-391
135426-031
135426-001
Diskette drive mounting bracket
Hard drive mounting bracket
Two-button mouse
Option slot cover (5 ea)
*
Creative Labs SBS52 speakers, Australia
Creative Labs SBS52 speakers, Europe
Creative Labs SBS52 speakers, Japan
Creative Labs SBS52 speakers, U.K.
Creative Labs SBS52 speakers, U.S.
Altec ACS 233 speakers, Australia
Altec ACS 233 speakers, Europe
Altec ACS 233 speakers, Japan
Altec ACS 233 speakers, U.K.
Altec ACS 233 speakers, U.S.
*
*
*
*
*
*
*
*
*
*Not shown
2–10
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Spare Parts
2.6 Keyboards
Keyboards (not illustrated)
Description
Spare Part
Internet keyboard
Belgian
135510-181
135510-051
135510-B31
135510-071
135510-106
135510-111
135510-031
135510-001
269513-291
French
International
Spanish
Swedish
Swiss
U.K.
U.S.
Spacesaver keyboard, Japanese
2.7 Monitors
Monitors (not illustrated)
Size
24”
21”
17”
21”
19”
15”
19”
17”
Description
Model P1610
Model P110
Model P75
Spare Part
305710-001
328267-001
307815-001
351760-001
303514-001
308011-001
360563-001
360513-001
Model V1000
Model V900
Model V500
Model S900
Model S700
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Spare Parts
2–12
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3
Removal and Replacement Preliminaries and
Routine Care
This chapter provides general service information for the computer. Adherence to the procedures
and precautions described in this chapter is essential for proper service.
CAUTION: When the computer is plugged into an AC power source there is always voltage applied to
Ä
the system board. You must disconnect the power cord from the power source before opening the
computer to prevent system board or component damage.
3.1 Electrostatic Discharge Information
A sudden discharge of static electricity from your 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 exposed to electrostatic discharge (ESD) may not be affected at all
and can work perfectly throughout a normal cycle. The device may function normally for a
while, then degrade in the internal layers, reducing 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.
3.1.1 Generating Static
The table below shows how different activities generate static electricity at different electrostatic
voltage levels.
Typical Electrostatic Voltages
Relative Humidity
Event
10%
40%
55%
7,500 V
Walking across carpet
35,000 V
12,000 V
6,000 V
2,000 V
11,500 V
14,500 V
26,500 V
21,000 V
15,000 V
5,000 V
800 V
Walking across vinyl floor
Motions of bench worker
Removing DIPs* from plastic tube
Removing DIPs* from vinyl tray
Removing DIPs* from Styrofoam
Removing bubble pack from PCB
Packing PCBs in foam-lined box
3,000 V
400 V
700 V
400 V
4,000 V
5,000 V
20,000 V
11,000 V
2,000 V
3,500 V
7,000 V
5,000 V
*Dual Inline Packaging (DIP) is the packaging around individual microcircuitry. These are then multi-
packaged inside plastic tubes, trays, or Styrofoam. 700 volts can degrade a product.
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Removal and Replacement Preliminaries and Routine Care
3.1.2 Preventing Electrostatic Damage to Equipment
Many electronic components are sensitive to ESD. Circuitry design and structure determine the
degree of sensitivity. The following proper packaging and grounding precautions are necessary to
prevent damage to electric components and accessories.
■ To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes.
■ Protect all electrostatic parts and assemblies with conductive or approved containers or
packaging.
■ Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
■ Place items on a grounded surface before removing them from their container.
■ Always be properly grounded when touching a sensitive component or assembly.
■ Avoid contact with pins, leads, or circuitry.
■ Place reusable electrostatic-sensitive parts from assemblies in protective packaging or
conductive foam.
3.1.3 Personal Grounding Methods and Equipment
Use the following equipment to prevent static electricity damage to equipment:
Wrist straps are flexible straps with a minimum of one-megohm +/- 10% resistance in the
ground cords. To provide proper ground, a strap must be worn snug against bare skin. The
ground cord must be connected and fit snugly into the banana plug connector on the grounding
mat or workstation.
Heel straps/Toe straps/Boot straps can be used at standing workstations and are compatible
with most types of shoes or boots. On conductive floors or dissipative floor mats, use them on
both feet with a minimum of one-megohm +/- 10% resistance between the operator and ground.
Static Shielding Protection Levels
Method
Voltage
Antistatic plastic
Carbon-loaded plastic
Metallized laminate
1,500
7,500
15,000
3–2
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Removal and Replacement Preliminaries and Routine Care
3.1.4 Grounding Workstations
To prevent static damage at the workstation, use the following precautions:
■ Cover the workstation with approved static-dissipative material. Provide a wrist strap
connected to the work surface and properly grounded tools and equipment.
■ Use static-dissipative mats, foot straps, or air ionizers to give added protection.
■ Handle electrostatic sensitive components, parts, and assemblies by the case or PCB
laminate. Handle them only at static-free workstations.
■ Turn off power and input signals before inserting and removing connectors or test
equipment.
■ Use fixtures made of static-safe materials when fixtures must directly contact dissipative
surfaces.
■ Keep work area free of nonconductive materials, such as ordinary plastic assembly aids and
Styrofoam.
■ Use conductive field service tools, such as cutters, screwdrivers, and vacuums.
3.1.5 Recommended Materials and Equipment
Materials and equipment that are recommended for use in preventing static electricity include:
■ Antistatic tape
■ Antistatic smocks, aprons, or sleeve protectors
■ Conductive bins and other assembly or soldering aids
■ Conductive foam
■ Conductive tabletop workstations with ground cord of one-megohm +/- 10% resistance
■ Static-dissipative table or floor mats with hard tie to ground
■ Field service kits
■ Static awareness labels
■ Wrist straps and footwear straps providing one-megohm +/- 10% resistance
■ Material handling packages
■ Conductive plastic bags
■ Conductive plastic tubes
■ Conductive tote boxes
■ Opaque shielding bags
■ Transparent metallized shielding bags
■ Transparent shielding tubes
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Removal and Replacement Preliminaries and Routine Care
3.2 Routine Care
3.2.1 3.2.1 General Cleaning Safety Precautions
■ Never use solvents or flammable solutions to clean the computer.
■ Never immerse any parts in water or cleaning solutions, apply any liquids to a clean cloth
and then use the cloth on the component.
■ Always turn off the computer when cleaning with liquids or damp cloths.
■ Always turn off the computer before cleaning the keyboard, mouse, or air vents.
■ Disconnect the keyboard before cleaning it.
■ Wear safety glasses equipped with side shields when cleaning the keyboard.
3.2.2 Cleaning the Computer Case
Follow all safety precautions in Section 3.2.1 before cleaning the computer.
To clean the computer case, follow the procedures described below:
■ To remove light stains or dirt, use plain water with a clean, lint-free cloth or swab.
■ For stronger stains, use a mild dishwashing liquid diluted with water. Rinse well by wiping it
with a cloth or swab dampened with clear water.
■ For stubborn stains, use isopropyl (rubbing) alcohol. No rinsing is needed as the alcohol will
evaporate quickly and not leave a residue.
■ After cleaning, always wipe the unit with a clean, lint-free cloth.
■ Occasionally, clean the air vents on the computer. Lint and other foreign matter can block the
vents and limit the airflow.
3.2.3 Cleaning the Keyboard
Follow all safety precautions in Section 3.2.1 before cleaning the keyboard.
To clean the tops of the keys or the keyboard body, follow the procedures described in Section
3.2.2.
When cleaning debris from under the keys, review all rules in Section 3.2.1 before following
these procedures:
CAUTION: Use safety glasses equipped with side shields before attempting to clean debris from under
the keys.
Ä
3–4
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Removal and Replacement Preliminaries and Routine Care
■ Visible debris underneath or between the keys may be removed by vacuuming or shaking.
■ Canned, pressurized air may be used to clean debris from under the keys. Caution should be
used as too much air pressure can dislodge lubricants applied under the wide keys.
■ If you remove a key, use a specially designed key puller to prevent damage to the keys. This
tool is available through many electronic supply outlets.
CAUTION: Never remove a wide leveled key (like the space bar) from the keyboard. If these keys are
improperly removed or installed, the keyboard may not function properly.
Ä
■ Cleaning under a key may be done with a swab moistened with isopropyl alcohol and
squeezed out. Be careful not to wipe away lubricants necessary for proper key functions. Use
tweezers to remove any fibers or dirt in confined areas. Allow the parts to air dry before
reassembly.
3.2.4 Cleaning the Monitor
■ Wipe the monitor screen with a clean cloth moistened with water or with a towlette designed
for cleaning monitors. Do not use sprays or aerosols directly on the screen; the liquid may
seep into the housing and damage a component. Never use solvents or flammable liquids on
the monitor.
■ To clean the monitor body follow the procedures in Section 3.2.2.
3.2.5 Cleaning the Mouse
Before cleaning the mouse, ensure that the power to the computer is turned off.
■ Clean the mouse ball by first removing the retaining plate and the ball from the housing. Pull
out any debris from the ball socket and wipe the ball with a clean, dry cloth before
reassembly.
■ To clean the mouse body, follow the procedures in Section 3.2.2.
3.3 Service Considerations
Listed below are some of the considerations that you should keep in mind during the disassembly
and assembly of the computer.
3.3.1 Tools and Software Requirements
To service the computer, you need the following:
■ Torx T-15 screwdriver (Compaq screwdriver, part number 161946-001)
■ Flat-bladed screwdriver
■ Diagnostics software
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Removal and Replacement Preliminaries and Routine Care
3.3.2 Screws
The screws used in the computer are not interchangeable. They may have standard or metric
threads and may be of different lengths. 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.
3.3.3 Cables and Connectors
Most cables used throughout the unit are flat, flexible cables. These cables must be handled with
care to avoid damage. Apply only the tension required to seat or unseat the cables during
insertion or removal from the connector. Handle cables by the connector whenever possible. In
all cases, avoid bending, twisting, or tearing the cables, and ensure that the cables are routed in
such a way that they cannot be caught or snagged by parts being removed or replaced.
CAUTION: When servicing this computer, ensure that cables are placed in their proper
location during the reassembly process. Improper cable placement can damage the
computer.
Ä
3.3.4 Hard Drives
Handle hard drives as delicate precision components, avoiding all physical shock and vibration.
This applies to failed drives as well as replacement spares.
■ Use only the packaging provided by Compaq for shipping.
■ Do not remove hard drives from the shipping package for storage. Keep hard drives in their
protective packaging until they are actually mounted in the computer.
■ Avoid dropping drives from any height onto any surface.
3.3.5 Plastic Parts
Plastic parts can be damaged by the use of excessive force during disassembly and reassembly.
Use care when handling the plastic parts. Do not use a screwdriver or similar tool to pry apart the
plastic components, use a flexible device, like a tongue depressor.
3.3.6 Lithium Battery
The lithium battery that comes with the computer is replaceable and should be properly disposed
of.
WARNING: Do not abuse or disassemble the lithium battery, as it may explode if
mistreated. Do not disassemble, crush, puncture, short external contacts, dispose of in water
or fire, or expose it to temperatures higher than 600C (1400F).
Å
3–6
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4
Removal and Replacement Procedures
After completing all necessary removal and replacement procedures, run the Diagnostics utility
to verify that all components operate properly.
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to
the system board. You must disconnect the power cord from the power source before opening the
computer to prevent system board or component damage.
Ä
4.1 Preparation for Disassembly
See Chapter 3, “Removal and Replacement Preliminaries and Routine Care,” for initial
procedures.
To prepare the computer for disassembly:
1. Remove any diskette or compact disc from the computer.
2. Unlock the computer Smart Cover Lock using Computer Setup.
Turn off the computer and any peripheral devices that are connected to it.
ÄCAUTION: Turn off the computer before disconnecting any cables.
CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to
Ä
the system board. You must disconnect the power cord from the power source before opening the
computer to prevent system board or component damage.
3. Disconnect the power cord from the electrical outlet and then from the computer.
4. Disconnect all peripheral device cables from the computer.
During disassembly, label each cable as you remove it, noting its position and routing. Keep all
screws with the units removed.
■
CAUTION: The screws used in the computer are of different thread sizes and lengths; using
the wrong screw in a component may damage the unit.
Ä
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Removal and Replacement Procedures
4.2 Hood
1. Prepare the computer for disassembly.
2. Unscrew the thumbscrews at the back of the computer.
The screws will remain attached to the hood.
■
3. Grasp the bottom of the hood and pull back slightly while lifting the hood off the computer.
To replace the hood, reverse this sequence.
4–2
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Removal and Replacement Procedures
4.3 Power Supply
1. Remove the hood.
2. Disconnect all cables connected to the power supply (cables to the hard drive, CD drive,
diskette drive, and system board).
3. Remove the four screws that secure the power supply to the rear of the chassis.
4. Slide the power supply to the front of the unit and remove it from the chassis.
To replace the power supply, reverse this sequence.
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Removal and Replacement Procedures
4.4.1 CD (Optical) Drive
If a compact disc is jammed in the drive, insert a straightened paper clip into the manual eject
hole and push firm1y.
1. Perform the preparation procedures.
2. Remove the hood.
3. Disconnect the audio 1, data 2, and power 3 cables from the CD drive.
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Removal and Replacement Procedures
4. Remove the four screws from the side of the CD drive.
5. Pull the CD drive straight out of the front of the chassis.
To replace the CD drive, reverse this sequence.
4–6
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Removal and Replacement Procedures
4.4.2 Diskette Drive
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the power supply. (Section 4.3)
Disconnect the power 1and data 2 cables from the diskette drive.
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Removal and Replacement Procedures
4. Remove the screw that holds the diskette drive and bracket to the chassis.
5. Grasp the drive bracket assembly on both sides and pull it towards the rear of the chassis.
6. Remove the four screws from the sides of the bracket to release the drive from the bracket.
To replace the diskette drive, reverse this sequence.
4–8
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Removal and Replacement Procedures
4.4.3 Hard Drive
1. Perform the preparation procedures.
2. Remove the hood.
3. Disconnect the power 1 and signal 2 cables from the hard drive.
4. Remove the screw holding the hard drive and bracket to the chassis.
5. Carefully push the hard drive and bracket towards the other side of the computer, and lift
them out of the chassis.
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Removal and Replacement Procedures
6. Remove the four screws at the bottom of the hard drive bracket to release the hard drive.
To replace the hard drive, reverse this sequence.
4–10
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Removal and Replacement Procedures
4.5 Video Card
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the screw holding the video card bracket to the chassis, and pull the video card out
of the slot.
To replace the video card, reverse this sequence.
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Removal and Replacement Procedures
4.6 Network Card
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the screw holding the network card bracket to the chassis, and pull the network card
out of the slot.
To replace the network card, reverse this sequence.
4–12
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Removal and Replacement Procedures
4.7 Fax/Modem Card
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the screw holding the fax/modem bracket to the chassis, and pull the fax/modem
card out of the slot.
To replace the fax/modem card, reverse this sequence.
CAUTION: When replacing the fax/modem, download the latest SoftPaq containing the software from
www.compaq.com. If QuickRestore is used, it may not have the 56K upgrade software included.
Ä
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Removal and Replacement Procedures
4.8 Memory Module
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the power supply.
4. Release the latches 1 at each end of the DIMM socket and unplug the DIMM 2 from the
system board.
To replace the memory module, reverse this sequence.
4–14
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Removal and Replacement Procedures
4.9 RTC Battery
WARNING: This computer contains an internal lithium battery. There is a risk of fire and burns if the
battery is not handled properly. To reduce the risk of personal injury:
- Do not attempt to recharge the battery.
Å
- Do not expose to temperatures higher than 140 F (60 C).
- Do not disassemble, crush, puncture, short circuit contacts, ordispose of in fire or water.
- Replace battery only with the Compaq spare designated for this product.
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the power supply. (Section 4.3)
4. Remove the diskette drive. (Section 4.4.2)
5. Locate the RTC battery.
6. Release the retaining tab and push the battery forward, up, and out of the battery retainer.
To replace the RTC battery, reverse this sequence.
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Removal and Replacement Procedures
4.10 Processor
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the power supply. (Section 4.3)
4. Locate the heatsink 2 on the system board.
5. Remove the clip 1 from the heatsink.
6. Carefully remove the heatsink from the processor 4 by twisting it before lifting it from the
socket (the two are held together by an adhesive strip 8). Never lift the heatsink straight up
from the processor as it may pull the processor from its socket and damage its pins.
7. Tilt the ZIF socket handle 5 away from the system board.
8. Lift the processor directly out of the ZIF socket.
To replace the processor, reverse this sequence.
4–16
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Removal and Replacement Procedures
4.11 Front Bezel
1. Perform the preparation procedures.
2. Remove the hood.
3. Release the latches at the middle and bottom of the bezel, then pivot the bezel up and away
from the chassis.
To replace the front bezel, reverse this sequence.
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Removal and Replacement Procedures
4.12 On-Button Board
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the front bezel. (Section 4.11)
4. Disconnect the on-button board connector from the system board.
5. Remove the two screws from the button board assembly, and pull the board off the chassis.
To replace the on-button board, reverse this sequence.
4–18
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Removal and Replacement Procedures
4.13 System Board Bracket
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the modem.
4. Remove the network card.
5. Remove the video card.
6. Remove the screws holding the system board bracket to the chassis.
7. Slide the system board bracket toward the front bezel and carefully pull the bracket away
from the chassis.
8. Disconnect the CD audio cable and data cable from the system board.
9. Disconnect the cables for the hard drive data, diskette drive, and power button from the
system board.
10. To replace the system board bracket, reverse this sequence.
CAUTION: When reinstalling the system board bracket, ensure that the fingers of the I/O panel are
properly aligned to prevent them from being bent. If the fingers become bent, the system board may get
damaged.
Ä
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Removal and Replacement Procedures
4.14 System Board
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the system board bracket. (Section 4.13)
4. Remove all of the cables from the system board.
5. Remove the eight screws that secure the system board to the bracket.
To replace the system board, reverse this sequence.
4–20
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Removal and Replacement Procedures
4.15 1/O Panel
1. Perform the preparation procedures.
2. Remove the hood.
3. Remove the system board bracket.
4. Gently push the I/O panel into the chassis from the rear of the unit.
To replace the I/O panel, reverse this sequence.
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5
System Board Jumpers and Switches
5.1 System Board Jumpers and Switches
Jumpers and Switches
Item
BT1
Description
Item
J35
Description
Real-Time clock battery socket
CMOS reset button
Wake on LAN connector
Password jumper
CMOS
DIMM1
DIMM2
J9
J36
Memory module socket 1
Memory module socket 2
Power supply connector
J37
Power switch/LED cable connector
Internal speaker connector
Boot block jumper
J38
J39
J12
IDE (ATA) drive connector, primary
IDE (ATA) drive connector, secondary
Diskette drive connector
J40
SCSI LED connector
PCI expansion slot
J13
PCI1
PCI2
PCI3
PCI4
J14
PCI expansion slot
J15
Heatsink fan connector
PCI expansion slot
J17
CD-ROM audio connection
Firmware jumper (do not use)
Firmware jumper (do not use)
PCI expansion slot
J32
Processor socket
J33
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System Board Jumpers and Switches
5.2 Clearing and Setting Passwords
Setting the Password provides access protection for the Computer Setup utility.
Follow the instructions below to clear the password.
1. Turn off the computer and any external devices.
2. Disconnect the power cord from the power outlet.
WARNING: The power cord must be disconnected from the power source before removing the access
panel. Stray voltage on the system board may injure you.
Å
3. Remove the access panel.
4. Remove the jumper from header J36 from pins 1 and 2. Place the jumper on pin 2 only, in
order to avoid losing it.
5. Replace the access panel.
6. Reconnect the power cord and the external equipment
7. Turn the computer on and allow the system to start. This clears the current password and
disables the password features.
To establish a new password after the old password has been cleared, follow the instructions
below.
1. Turn off the computer and any external devices.
2. Disconnect the power cord from the power outlet.
3. Remove the jumper from header J36 from pin 2. Place the jumper on pins 1 and 2 only.
4. Replace the access panel.
5. Reconnect the power cord and the external equipment
6. Turn the computer on and allow the system to start. Go to Computer Setup (GF10) to
establish the new password.
5–2
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System Board Jumpers and Switches
5.3 Resetting CMOS
The computer's configuration (CMOS) may occasionally be corrupted. If it is, it is necessary to
clear the CMOS memory using the CMOS button on the system board. To clear and reset the
configuration, perform the following procedure:
1. Prepare the computer for disassembly.
2. Disconnect the power cord from the power outlet.
3. Remove the access panel.
WARNING: The power cord must be disconnected from the power source before removing the access
panel. Stray voltage on the system board may injure you.
Å
4. Press the CMOS button located on the system board and keep it depressed for 5 seconds.
5. Replace the access panel.
6. Reconnect the power cord.
7. Turn the computer on.
8. Run the Computer Setup (F10) utility to reconfigure the system.
When the CMOS button is pushed the password becomes invalid because it is stored
in the configuration memory. You will need to reset the password.
■
CAUTION: The power cord must be disconnected from the power source before pushing the CMOS
Button. Failure to do so may damage the system board.
Ä
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Index
expansion card spare part number 2–8
A
access panel removal and replacement 4–2
audio cable spare part number 2–7
F
fax/modem card removal and replacement 4–13
front bezel removal and replacement 4–17
front bezel spare part number 2–3
B
battery 3–6
front panel controls and LEDs 1–2
removal and replacement 4–15
safety precautions 3–6
bezel blank spare parts number 2–3
G
generating static electriciity 3–1
grounding guidelines 3–2
grounding methods 3–3
C
cables spare part number 2–7
CD-ROM cable spare part number 2–7
CD-ROM drive removal and replacement 4–5
CD-ROM drive spare part number 2–5
chassis
H
hard drive
cable spare part number 2–7
mounting bracket spare part number 2–10
safety precautions 3–6
spare part number 2–3
cleaning
spare part number 2–5
computer 3–4
keyboard 3–4
monitor 3–5
mouse 3–5
hood assembly, spare part number 2–3
hood removal and replacement 4–2
I
safety precautions 3–4
cleaning the keyboard 3–4
clearing password 5–2
CMOS setting 5–3
computer cleaning 3–4
connectors, rear panel 1–3
I/O panel removal and replacement 4–21
I/O panel spare part number 2–3
K
keyboard cleaning 3–4
keyboard spare part number 2–11
D
M
disassembly preparation 4–1
diskette drive
memory module removal and replacement 4–14
memory module spare part number 2–9
microprocessor removal and replacement 4–16
microprocessor spare part number 2–9
monitor cleaning 3–5
monitor spare part number 2–11
mother board removal and replacement 4–20
mouse cleaning 3–5
cable spare part number 2–7
mounting bracket spare part number 2–10
removal and replacement 4–7
spare part number 2–5
drive location 4–4
DVD cable spare part number 2–7
DVD drive spare part number 2–5
mouse spare part number 2–10
E
N
electrostatic discharge 3–1
Network Interface Card (NIC) removal and
replacement 4–12
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Index
Network Interface Card (NIC) spare part number
S
safety precautions 3–6
cleaning 3–4
O
hard drives 3–6
plastic parts 3–6
On-button board removal and replacement 4–18
optical drive cable spare part number 2–7
optical drive removal and replacement 4–5
option slot cover spare part number 2–10
screws used 3–6
serial number location 1–4
service tools required 3–5
setting CMOS 5–3
setting password 5–2
spare part number
audio cable 2–7
P
password setting and clearing 5–2
plastic parts safety precautions 3–6
power button/LED cable removal and replacement
bezel blank 2–3
power cord spare part number 2–7
power supply removal and replacement 4–3
power supply spare part number 2–3
power switch/LED cable spare part number 2–7
preparation for disassembly 4–1
preventing static electricity damage 3–2
processor removal and replacement 4–16
processor spare part number 2–9
cables 2–7
CD-ROM cable 2–7
CD-ROM drive 2–5
diskette drive 2–5
diskette drive cable 2–7
diskette drive mounting bracket 2–10
drives 2–4
DVD cable 2–7
DVD drive 2–5
expansion boards 2–8
front bezel 2–3
R
rear panel connectors 1–3
removal and replacement
access panel 4–2
hard drive 2–5
hard drive cable 2–7
hard drive mounting bracket 2–10
hood assembly 2–3
I/O panel 2–3
battery 4–15
diskette drive 4–7
DR-ROM drive 4–5
fax/modem card 4–13
front bezel 4–17
hood 4–2
keyboard 2–11
mass storage devices 2–4
memory module 2–9
microprocessor 2–9
monitor 2–11
mouse 2–10
Network Interface Card (NIC) 2–9
optical drive 2–5
optical drive cable 2–7
other drive 2–5
power cord 2–7
power supply 2–3
power switch/LED cable 2–7
processor 2–9
I/O panel 4–21
memory module 4–14
microprocessor 4–16
mother board 4–20
Network Interface Card (NIC) 4–12
On-button board 4–18
optical drive 4–5
power button/LED cable assembly 4–18
power supply 4–3
preparation 4–1
processor 4–16
RTC battery 4–15
system board 4–20
system board bracket 4–19
video card 4–11
speaker 2–10
standard and optional boards 2–8
storage devices 2–4
system board 2–9
system unit 2–3
Zip drive 2–5
RTC battery removal and replacement 4–15
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Index
spare part number, chassis 2–3
speaker spare part number 2–10
standard and optional boards spare part number 2–8
static electricity 3–1
storage devices, location 4–4
switches, system board 5–1
system board
spare part number 2–9
system unit spare part numbers 2–3
T
tools required, service 3–5
V
video card removal and replacement 4–11
bracket removal and assembly 4–19
jumpers and switches 5–1
removal and replacement 4–20
Z
Zip drive, spare part number 2–5
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