Compaq 8000 - Elite Convertible Minitower PC User manual

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Maintenance & Service Guide
Compaq TFT8000 Flat Panel Monitor
First Edition (December 1998)
Part Number 307912-001
Compaq Computer Corporation

Preface v
preface
This Maintenance & Service Guide is a troubleshooting guide that can be used for reference when
servicing the Compaq TFT8000 Flat Panel Monitor. Only authorized technicians trained by
Compaq should attempt to repair this equipment.
Compaq Computer Corporation reserves the right to make changes to the Compaq TFT8000 Flat
Panel Monitor without notice.
Symbols and Conventions
The following words and symbols mark special messages throughout this guide:
!WARNING: Text set off in this manner indicates that failure to follow directions in the
warning could result in bodily harm or loss of life.
CAUTION: Text set off in this manner indicates that failure to follow directions could
result in damage to equipment or loss of data.
✎Text set off in this manner presents commentary, sidelights, clarifying information, or
specific instructions.
Technician Notes
!WARNING: Only authorized technicians trained by Compaq should attempt to repair this
equipment. All troubleshooting and repair procedures are detailed to allow only
subassembly/module level repair. Because of the complexity of the individual
components and subassemblies, no one should attempt to make repairs at the component
level or to make modifications to any printed wiring board. Improper repairs can create
a safety hazard. Any indications of component replacement or printed wiring board
modifications may void any warranty.
CAUTION: To properly ventilate your monitor, you must provide at least 3 inches (7.6
cm) of clearance at the back of the monitor.
CAUTION: The monitor is designed to be electrically grounded. To ensure proper
operation, plug the AC power cord into a properly grounded AC outlet only.
System Serial Number
The serial number is displayed on the monitor's back panel.

vi Preface
Locating Additional Information
The following documentation is available to support the monitor:
„#User’s Guide (hard copy)
„#Compaq Service Advisories and Bulletins
„#Compaq QuickFind
„#Compaq Service Quick Reference Guide

Contents iii
CONTENTS
Preface
Symbols and Conventions .............................................................................................v
Technician Notes ...........................................................................................................v
System Serial Number...................................................................................................v
Locating Additional Information..................................................................................vi
chapter 1
Removal and Replacement Procedures
1.1 Electrostatic Discharge........................................................................................ 1-1
1.1.1 Preventing Electrostatic Discharge........................................................... 1-1
1.1.2 Grounding Methods .................................................................................. 1-1
1.2 Serial Number...................................................................................................... 1-2
1.3 Features................................................................................................................ 1-3
1.4 Front Bezel Assembly Controls and LEDs.......................................................... 1-4
1.5 Disassembly and Assembly Procedures ............................................................. 1-5
1.5.1 Disconnecting the AC Adapter................................................................. 1-5
1.5.2 Disconnecting the Video Connector......................................................... 1-6
1.5.3 Separating the Monitor Base from the Monitor Panel.............................. 1-6
1.5.4 Replacing the Backlights .......................................................................... 1-8
1.5.5 Removing the Back Cover........................................................................ 1-9
1.5.6 Removing the Backlight Bulbs............................................................... 1-10
chapter 2
Illustrated Parts Map
.............................................................................................................. 2-1

Removal and Replacement Procedures 1-1
chapter 1
REMOVAL AND REPLACEMENT
PROCEDURES
This chapter provides removal and replacement assembly procedures for the Compaq TFT8000.
1.1 Electrostatic Discharge
A discharge of static electricity from a finger or other conductor may damage system boards or other
electrostatic-sensitive devices. This type of damage may reduce the life expectancy of the devices.
1.1.1 Preventing Electrostatic Discharge
To prevent electrostatic damage, observe the following precautions:
„#Avoid hand contact by transporting and storing products in electrostatic-safe containers.
„#Keep electrostatic-sensitive parts in their containers until they arrive at electrostatic-free
workstations.
„#Place parts on a grounded surface before removing them from their containers.
„#Avoid touching pins, leads, or circuitry.
„#Always be properly grounded when touching an electrostatic-sensitive component or
assembly.
1.1.2 Grounding Methods
There are several methods for grounding. Use one or more of the following methods when handling
or installing electrostatic-sensitive parts.
„#Use a wrist strap connected by a ground cord to a grounded workstation or computer chassis.
Wrist straps are flexible straps with a minimum of 1 megohm +/- 10 percent resistance in the
ground cords. To provide proper ground, wear the strap snug against the skin.
„#Use heel straps, toe straps, or boot straps at standing workstations. Wear the straps on both
feet when standing on conductive floors or dissipating floor mats.
„#Use conductive field service tools.
„#Use a portable field service kit with a folding, electrostatic-dissipating work mat.
✎If you do not have the suggested equipment for proper grounding, or if you need more
information on static electricity or assistance with product installation, contact a Compaq
authorized service provider.

1-2 Removal and Replacement Procedures
1.2 Serial Number
The monitor serial number should be given to Compaq when requesting information or ordering
Spare parts. The serial number is displayed on the monitor’s rear enclosure.
Locating the serial number

Removal and Replacement Procedures 1-3
1.3 Features
„#Large 18.1-inch (45.97 cm) viewable area display
„#1280 × 1024 resolution, plus full-screen support for lower resolutions
„#Wide viewing angle to allow viewing from a sitting or standing position, or moving side-to-
side
„#Removable base for flexible mounting solutions
„#Plugs into a standard VGA connector; does not require a special video adapter card
„#Plug and play capability if supported by your system
„#Universal Serial Bus (USB) bus-powered hub interface—plug and play connectors for use
with USB devices (mouse, keyboard, etc.)
„#On-Screen Display (OSD) adjustments in six different languages: English, Dutch, French,
German, Italian, and Spanish for ease of set-up and screen optimization
„#Programmable sleep mode timer
„#Security lock slot
„#Fault Management and AssetControl
„#Energy Saver feature for Energy Star compliance
„#Compliant with the following regulated specifications:
❏ Swedish MPR II 1990
❏ EPA Energy Star
❏ European Union CE Directives
❏ Swedish TCO 1995

1-4 Removal and Replacement Procedures
1.4 Front Bezel Assembly Controls and LEDs
The controls and LEDs located on the monitor’s front bezel assembly are identified below.
Front Bezel Controls and LEDs
Front Bezel Controls and LEDs
No. Cable/Connector Function
nComputer Signal Switch Selects computer to monitor interface
oMenu Selection Button 1. Launches on-screen display
2. Selects function adjustments.
3. Exits menus and on-screen display.
pMinus Button Selects and adjusts the functions.
qPlus Button Selects and adjusts the functions
5Power Button Turns the monitor on and off.
6Power LED 1. Green indicates monitor is turned on.
2. Yellow indicates suspend mode.
3. Amber indicates sleep mode.
4. Blinking Green/Amber indicates programmable sleep
mode.

Removal and Replacement Procedures 1-5
1.5 Disassembly and Assembly Procedures
This section provides disassembly and assembly procedures for only the parts that are spared for the
Compaq TFT8000. Before you begin any of these procedures, be sure to turn off the power to the
monitor, computer system, and other attached devices; then disconnect the power cable from the
electrical outlet.
CAUTION: As you disassemble the monitor, be sure to place the screws in a safe place,
and separate them according to their groupings.
1.5.1 Disconnecting the AC Adapter
1. Disconnect the power cord 1from the wall socket.
2. Before removing the AC Adapter, disconnect the AC Adapter connector o
(Spare part nos. 307913-001/Opal, 307913-002/Carbon) from the monitor.
✎
Disconnecting the AC Adapter
To reconnect the AC adapter, reverse this procedure.
✎Replace the AC adapter if the monitor does not power on and
there is power to the AC adapter.

1-6 Removal and Replacement Procedures
1.5.2 Disconnecting the Video Connector
Disconnect the video connector from the monitor panel.
Disconnecting the Video Connector from the Monitor
1.5.3 Separating the Monitor Base from the Monitor Panel
1. Lay the front bezel on a soft area to prevent it from getting scratched, defaced, or broken.
2. Grasp the hinge cover 1and press it in on both sides. Then, lift up and pull off the hinge
cover. (Spare part nos. 307916-001/Opal, 307916-002/Carbon).
3. Remove the two screws 2as shown below.
Removing the Hinge Cover

Removal and Replacement Procedures 1-7
Slide the monitor base (Spare part nos. 307914-001/Opal, 307914-002/Carbon) toward
the monitor panel. Then, lift the base up and away from the panel.
Separating the Monitor Base from the Monitor Panel

1-8 Removal and Replacement Procedures
1.5.4 Replacing the Backlights
1. Use a screwdriver to pry out the two rubber tabs 1on the back cover.
2. Remove the two screws 2from the back cover.
Removing the Two Screws from the Back Cover
3. Turn the monitor over so that the front bezel is facing up.
4. Use Tool No. 107823-001 to gently pry open all four sides of the monitor panel. Use the
same tool to separate the tabs 1on the monitor panel. There are two tabs on each side.
5. Lift the front bezel 2up and away from the monitor panel.
Removing the Front Bezel Assembly

Removal and Replacement Procedures 1-9
1.5.5 Removing the Back Cover
1. Remove the four nscrews.
2. Tilt the LCD panel away from the cable connector to access the cable.
3. Disconnect the cable 2.
4. Lift the LCD panel 3up and away from the back.
5. Remove the backlight shields 4.
Removing the Back Cover
✎ The backlight shields 4will loosen when you remove the four screws.

1-10 Removal and Replacement Procedures
1.5.6 Removing the Backlight Bulbs
1. After the removal of the back cover and the backlight shields 1, remove the
two screws 2that secure the backlight bulbs (Spare part no. 307919-001).
2. Disconnect the backlight cables 3from the inverter board.
3. Slide the backlight bulbs out of the LCD panel 4.
✎The backlight shields came off during the removal of the back cover.
✎If you are replacing the backlight bulbs, slide the new bulbs in and reverse the
procedure.
Removing the Backlight Bulbs

Illustrated Parts Map 2-1
chapter 2
ILLUSTRATED PARTS MAP
Compaq TFT8000 Flat Panel Monitor

2-2 Illustrated Parts Map
Illustrated Parts Map

Illustrated Parts Map 2-3
Compaq TFT8000 Flat Panel Monitor
Description Part Number 1. Backlight Bulbs (2) 307919-001 2. Hinge Cover 307916-001, opal
307916-002, carbon
3. Monitor Base 307914-001, opal
307914-002, carbon
4. USB Hub 307937-001 5. Miscellaneous Hardware Kit* (10 of each screw, 5 feet) 307923-001 6. AC Adapter 307913-001, opal
307913-002, carbon
7. Return Kit* 307926-001 8. USB Cable* 325408-001 9. VGA Cable (2)* 307936-001, opal
307936-002, black
*Not included in the illustration