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Notice
The information in this guide is subject to change without notice.
Compaq Computer Corporation shall not be liable for technical or editorial
errors or omissions contained herein; nor for incidental or consequential
damages resulting from the furnishing, performance, or use of this
material.
This guide contains information protected by copyright. No part of this
guide may be photocopied or reproduced in any form without prior written
consent from Compaq Computer Corporation.
Copyright 1994, 1995 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Deskpro, LTE, Contura, Presario, ProLinea
Registered U. S. Patent and Trademark Office.
The software described in this guide is furnished under a license
agreement or nondisclosure agreement. The software may be used or copied
only in accordance with the terms of the agreement.
Product names mentioned herein may be trademarks and/or registered
trademarks of their respective companies.
MAINTENANCE AND SERVICE GUIDE
COMPAQ CONTURA 400 FAMILY OF PERSONAL COMPUTERS
Second Edition (June 1995)
First Edition (September 1994)
Part Number 147951-002
Preface
This Maintenance and Service Guide is used for reference when servicing
the Compaq Contura 400 Family of Personal Computers.
Compaq Computer Corporation reserves the right to make changes to the
Compaq Contura 400 Family of Personal Computers without notice.
Symbols
The following words and symbols mark special messages throughout this
guide:
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Text set off in this manner indicates that failure to follow directions
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.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
IMPORTANT: Text set off in this manner presents clarifying information or
specific instructions.
NOTE: Text set off in this manner presents commentary, sidelights, or
interesting points of information.
Technician Notes
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Only authorized technicians trained by Compaq should repair this
equipment. All troubleshooting and repair procedures are detailed to allow
only subassembly/module level repair. Because of the complexity of the
individual boards and subassemblies, no one should attempt to make repairs
at the component level or to make modifications to any printed circuit
board. Improper repairs can create a safety hazard. Any indications of
component replacement or printed circuit board modifications may void any
warranty.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Locating Additional Information
The following documentation is available:
o Compaq Contura 400 Family Documentation:
- QUICK SETUP
- BEYOND SETUP
- ONLINE USER'S GUIDE
o Compaq Service Quick Reference Guide
o Service Training Guides
o Compaq Service Advisories and Bulletins
o Compaq QuickFind
Chapter 1. Illustrated Parts Catalog
Introduction
Chapter 1.1 Illustrated Parts Breakdown
The computer combines a display assembly and system unit module. The
display and system unit module are joined together by clutches on either
side secured by screws in the chassis and display enclosure allowing it to
open and close. The system unit module is secured to the CPU base by screw
locks in the rear and screws in the bottom of the system unit enclosure.
The display assembly is secured by screws installed in the front bezel of
the display enclosure.
This chapter provides a description of the system unit module, display
assembly, docking base, and monitor support cover. It includes a complete
parts breakdown.
Chapter 1.2 Serial Number
The computer serial numbers should be provided to Compaq whenever
requesting information or ordering spare parts. The serial number is
located on the bottom of the computer.
The serial number on the Docking Base is located on the rear of the base.
Chapter 1.3 System Unit Module Overview
The system unit module (Figure 1-4) contains the following upgradable
components:
o Hard drive
o Memory expansion board
o Processor upgrade (Contura 400 only)
A complete list of replaceable parts is included in Table 1-1. Major
components include:
o Battery pack and compartment components
o Keyboard assembly
o Integrated trackball assembly
o Diskette drive
o System board
o PC Card (PCMCIA) ejector rails and components
The hard drive, memory expansion board, and battery pack are accessed from
the bottom of the computer. To service the remaining system unit module
components, the keyboard assembly must be removed. Most major components
connect directly to the system board by connectors. The only cables in
this unit are the display assembly cable, the display ground cable, and
diskette drive cable.
Compaq Contura Models
Table 1-1 lists the Compaq Contura 400 Family of Personal Computer Models
and standard features.
Table 1-1. Compaq Contura 400 Family of Personal Computer Models
===========================================================================
Model Processor Hard Drive Memory Display
===========================================================================
Contura 400 486 DX2/40 MHz 170 MB 4 MB 9.5 in Monochrome
Contura 400 486 DX2/40 MHz 250 MB 4 MB 9.5 in Monochrome
Contura 400C 486 DX2/40 MHz 250 MB 4 MB 9.5 in Color STN
Contura 400CX 486 DX2/40 MHz 250 MB 4 MB 8.4 in. Color TFT
Contura 410 486 DX2/50 MHz 250 MB 4 MB 9.5 in Monochrome
Contura 410C 486 DX2/50 MHz 250 MB 4 MB 9.5 in Color STN
Contura 410C 486 DX2/50 MHz 350 MB 4 MB 9.5 in Color STN
Contura 410CX 486 DX2/50 MHz 350 MB 4 MB 8.4 in. Color TFT
Contura 420C 486 DX4/75 MHz 350 MB 4 MB 10.4 in. Color STN
Contura 420C 486 DX4/75 MHz 420 MB 8 MB 10.4 in. Color STN
Contura 420CX 486 DX4/75 MHz 420 MB 8 MB 10.4 in. Color TFT
Contura 430C 486 DX4/100 MHz 420 MB 8 MB 10.4 in. Color STN
Contura 430C 486 DX4/100 MHz 720 MB 8 MB 10.4 in. Color STN
Contura 430CX 486 DX4/100 MHz 720 MB 8 MB 10.4 in. Color TFT
---------------------------------------------------------------------------
Note: Processor, hard drive and memory upgrades are available for most
models
===========================================================================
Models 400 and 410
This section provides a description of the system unit module components
for Models 400 and 410. These components are accessed from the bottom of
the computer:
o Hard drive -- The hard drive is easily replaced or upgraded from the
bottom of the computer. Remove two screws from the hard drive
compartment cover to access the hard drive. The hard drive mounts to the
system chassis with a hard drive bracket and connects directly to the
system board with no intervening cables. The hard drive bracket attaches
to the hard drive with four screws.
o Memory expansion -- System memory can be upgraded with optional memory
expansion boards. An expansion board is added or replaced from the
bottom of the computer through the memory compartment cover. The memory
expansion board connects directly to the system board with two
connectors.
o Battery pack -- The Nickel Metal Hydride battery pack is accessed
through the battery compartment.
To access the remaining system unit components, open the computer and
remove the keyboard assembly. These components include the following:
o Integrated trackball assembly -- The mechanical trackball is centrally
located at the bottom of the keyboard assembly. The assembly consists of
the trackball, retaining ring, and connector. The trackball assembly
connects directly to the system board and is secured by one screw. It
cannot be replaced with the optical trackball used in the Models 420 and
430. The mechanical trackball and optical trackball are not
interchangeable.
o System board -- The system board is mounted directly to the system
chassis. All removable components connected to the system board, except
for the PC Card rails, must be removed prior to removing the system
board. The system board is unique and cannot be replaced by the one
used in the Models 420 and 430.
o Processor upgrade -- Systems that come with the DX2/40 MHz processor can
be upgraded to the DX2/50 MHz processor. Place the upgrade processor into
the two connectors on the system board (Refer to "Removal and
Replacement Procedures, Section 3.11). Once installed, the processor
overrides control of the system board processor. The system board
processor is not removable.
o Real-Time Clock Battery -- This battery is located directly behind the
Trackball.
o PC Card rails -- The PC Card rails are replaceable and are secured by
two screws from the bottom of the system board and a clip on top of the
rails. The rails are not interchangeable with those used in Models 420
and 430. The clip is common between all models. The header attaches
directly to the system board and cannot be removed. The top and bottom
PC Card ejection levers are replaceable, but are not interchangeable
with those used in the Models 420 and 430.
o Diskette drive -- The diskette drive attaches to the system board by a
bracket and three screws. It is connected by a diskette drive cable and
LIF connector. The bracket attaches to the drive with four screws. The
drive is protected by an insulator between the system board and the
drive.
Models 420 and 430
This section provides a description of the system unit module components
for Models 420 and 430. These components are accessed from the bottom of
the computer:
o Hard drive -- The hard drive is easily replaced or upgraded from the
bottom of the computer. Remove two screws from the hard drive
compartment cover to access the hard drive. The hard drive mounts to the
system chassis with a hard drive bracket and connects directly to the
system board with no intervening cables. The hard drive bracket attaches
to the hard drive with four screws.
o Memory expansion -- System memory can be upgraded with optional memory
expansion boards. An expansion board is added or replaced from the
bottom of the computer through the memory compartment cover. The memory
expansion board connects directly to the system board with two connectors.
o Battery pack -- The Nickel Metal Hydride battery pack is accessed
through the battery compartment.
To access the remaining system unit components, open the computer and
remove the keyboard assembly. These components include the following:
o Integrated trackball assembly -- This optical trackball is centrally
located at the bottom of the keyboard assembly. The assembly consists of
the trackball, retaining ring, and connector. The trackball assembly
connects directly to the system board and is secured by two screws. It
cannot be replaced with the mechanical trackball used in the Compaq
Models 400 and 410. The optical trackball and mechanical trackball are
not interchangeable among computer models.
o System board -- The system board is mounted directly to the system
chassis. All removable components connected to the system board, except
for the PC Card rails, must be removed prior to removing the system
board. The system board is unique and cannot be replaced by the one
used in the Compaq Models 400 and 410.
o Processor upgrade -- Models 420 and 430 are equipped with either a
DX4/75 MHz or a DX4/100 MHz processor on the system board. There are no
upgrade provisions for these models.
o Real-Time Clock Battery -- This battery is located in the left rear area
of the system board.
o PC Card rails -- The PC Card rails are replaceable and are secured by
two screws from the bottom of the system board and a clip on top of the
rails. The rails are not interchangeable with those used in Models 420
and 430. The clip is common between all models. The header attaches
directly to the system board and cannot be removed. The top and bottom
PC Card ejection levers are replaceable, but are not interchangeable
with those used in the Models 400 and 410.
o Diskette drive -- The diskette drive attaches to the system board by a
bracket and three screws. It is connected by a diskette drive cable and
LIF connector. The bracket attaches to the drive with four screws. The
drive is protected by an insulator between the system board and the
drive.
Chapter 1.4 Display Assembly Overview
Display Assembly Description
This section provides a description of the display assembly and
components.
All display assemblies (Figure 1-5 and Figure 1-6) include the following
replaceable parts:
o Bezel
o Enclosure latches
o Inverter board
o Liquid crystal display (LCD) panel
o Shield
o Enclosure
o Display cable and display ground cable
To replace the display assembly, the assembly must be removed from the
system unit module. This is done by removing the keyboard assembly,
disconnecting the display cable and display ground cable from the system
unit module, removing the tilt feet and handle brackets, removing the rear
clutch screws, and lifting off the display assembly.
To service display components, do not remove the display assembly from the
system unit module (unless the display enclosure or clutch replacement is
required). Access display components (inverter board or latches) by
removing the bezel secured with four screws on the front of the display.
The display cable is a prefolded, flex cable that connects to the display
inverter board with a low insertion force (LIF) connector. The other end
of the display cable is exposed at the bottom of the display enclosure and
connects to the system board with a zero insertion force (ZIF) slide
connector.
The display ground cable connects to the display shield on one end, and
the other end clips to a LIF-type spring clip located above the serial
port between the system board and system chassis.
The display inverter board is aligned to the right of the display
enclosure with pins. One end connects to the display cable; the other end
connects to the backlight cable of the LCD panel.
Chapter 1.5 Docking Base
The docking base includes the following replaceable parts:
o Battery door
o Feet
o Handle
Chapter 1.6 Monitor Support Cover
The monitor support cover is used with the docking base. The foot on the
monitor support cover is the only replaceable part.
Chapter 1.7 System Unit Module Parts
Table 1-2. System Unit Module -- Models 400 and 410
===========================================================================
Spare Part
Description Number Notes
===========================================================================
1. Base enclosure 147856-001 Includes:
a. PC Card eject levers, pin, door,
and spring
b. battery latch button and spring
c. handle bracket, screws and
washers
d. battery shield, insulator
e. tilt foot and screws
f. warning label *
g. anti-skid pads *
h. memory door *
---------------------------------------------------------------------------
2. System board Include PC Card ejector rails, hard
- 486 DX2/40 MHz 147944-001 drive insulators, and gasket.
- 486 DX2/50 MHz 147621-001
---------------------------------------------------------------------------
3. Diskette drive
bracket 147857-001
---------------------------------------------------------------------------
4. Diskette drive 147963-001
---------------------------------------------------------------------------
5. Processor upgrade
486 DX2/50 MHz 169644-001
---------------------------------------------------------------------------
6. Real-time clock
battery 117099-001
---------------------------------------------------------------------------
7. Mechanical
Trackball 147876-001
---------------------------------------------------------------------------
8. PC Card ejection Includes the following and screws *.
assembly 147871-001 a. rails
b. clip
c. screws *
---------------------------------------------------------------------------
9. Chassis 147865-001
---------------------------------------------------------------------------
10. Clutches 147858-002 Includes:
a. left
b. right
---------------------------------------------------------------------------
11. Hard drive *
- 350 MB 189111-001 Does not include hard drive bracket.
- 250 MB 199233-001
- 170 MB 169685-001
---------------------------------------------------------------------------
12. Hard drive
bracket * 147872-001
---------------------------------------------------------------------------
13. Memory expansion
board *
- 4 MB 147654-001
- 8 MB 147656-001
- 16 MB 147658-001
- 24 MB 189261-001
---------------------------------------------------------------------------
14. NiMH battery
pack * 190626-001
---------------------------------------------------------------------------
15. Screws kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Table 1-3. System Unit Module -- Models 420 and 430
===========================================================================
Spare Part
Description Number Notes
===========================================================================
1. Base enclosure 189239-001 Includes:
a. PC Card eject levers, pin, door,
and spring
b. battery latch button and spring
c. handle bracket, screws and
washers
d. battery shield, insulator
e. tilt foot and screws
f. warning label *
g. anti-skid pads *
h. memory door *
---------------------------------------------------------------------------
2. System board Includes PC Card ejector rails,
- 486 DX4/75 MHz 189115-001 hard drive insulators, and gasket
4 MB
- 486 DX4/75 MHz 189116-001
8 MB
- 486 DX4/100 MHz 189134-001
8 MB
---------------------------------------------------------------------------
3. Diskette drive
bracket 189240-001
---------------------------------------------------------------------------
4. Diskette drive 147963-001
---------------------------------------------------------------------------
5. Real-time clock
battery 117099-001
---------------------------------------------------------------------------
6. Optical Trackball
assembly 189197-001
---------------------------------------------------------------------------
7. PC Card ejection Includes the following and screws *.
assembly 189242-001 a. rails
b. clip
c. screws *
---------------------------------------------------------------------------
8. Chassis 189241-001
---------------------------------------------------------------------------
9. Clutches 147858-001 Includes:
a. left
b. right
---------------------------------------------------------------------------
10. Hard drive * Does not include hard drive bracket.
- 720 MB 189156-001
- 540 MB 189132-001
- 420 MB 189112-001
- 350 MB 189111-001
---------------------------------------------------------------------------
11. Hard drive
bracket * 147872-001
---------------------------------------------------------------------------
12. Memory expansion
board *
- 4 MB 147654-001
- 8 MB 147656-001
- 16 MB 147658-001
- 24 MB 189261-001
---------------------------------------------------------------------------
13. NiMH battery
pack * 190626-001
---------------------------------------------------------------------------
14. Screws kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.8 Monochrome Display Assembly Parts
Table 1-4. Monochrome Display Assembly -- Models 400 and 410
===========================================================================
Description Spare Part Number Notes
===========================================================================
1. Display bezel 147882-001
2. Backlight inverter
board 147622-001
3. Display panel 147877-001 Includes labels and shield
4. Display cables 147884-001 Includes:
a. display cable
b. display ground cable
5. Display clutch 147858-001 Includes screws for handle
(left and right) bracket, washer, tilt feet
6. Display enclosure 147880-001 Includes enclosure, latch,
kit spring, and logo
7. Screw kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.9 Color STN (9.5 inch) Display Assembly Parts
Table 1-5. CSTN (9.5 inch) Display Assembly -- Models 400 and 410
===========================================================================
Description Spare Part Number Notes
===========================================================================
1. Display bezel 147883-001
2. Backlight inverter
board 147624-001
3. Display panel 147878-001 Includes labels and shield
4. Display cables 147884-001 Includes:
a. display cable
b. display ground cable
5. Display clutch 147858-001 Includes screws for handle
(left and right) bracket, washer, tilt feet
6. Display enclosure 147881-001 Includes enclosure, latch,
kit spring, and logo
7. Screw kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.10 Color STN (10.4 inch) Display Assembly Parts
Table 1-6. CSTN (10.4 inch) Display Assembly -- Models 420 and 430
===========================================================================
Spare Part
Description Number Notes
===========================================================================
1. Display bezel 189246-001
2. Backlight inverter
board 189135-001
3. Display panel 189113-001 Includes labels and shield
4. Display cables 189247-001 Includes:
a. display cable
b. display ground cable
c. XOVER board
5. Display clutch Includes screws for handle
(left and right) 147858-001 bracket, washer, tilt feet
6. Display enclosure Includes enclosure, latch,
kit 189245-001 spring, logo and pad for
Sharp CSTN
7. Screw kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.11 Color TFT (8.4 inch) Display Assembly Parts
Table 1-7. CTFT (8.4 inch) Display Assembly -- Models 400 and 410
===========================================================================
Spare Part
Description Number Notes
===========================================================================
1. Display bezel 147869-001
2. Backlight inverter
board 147624-001
3. Display panel 147879-001 Includes labels and shield
4. Display cables 147884-001 Includes:
a. display cable
b. display ground cable
5. Display clutch Includes screws for handle
(left and right) 147858-001 bracket, washer, tilt feet
6. Display enclosure Includes enclosure, latch,
kit 147881-001 spring, and logo
7. Screw kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.12 Color TFT (10.4 inch) Display Assembly Parts
Table 1-8. CTFT (10.4 inch) Display Assembly -- Models 420 and 430
===========================================================================
Spare Part
Description Number Notes
===========================================================================
1. Display bezel 189244-001
2. Backlight inverter
board 189136-001
3. Display panel 189114-001 Includes labels and shield
4. Display cables 189247-001 Includes:
a. display cable
b. display ground cable
5. Display clutch Includes screws for handle
(left and right) 147858-001 bracket, washer, tilt feet
6. Display enclosure Includes enclosure, latch,
kit 189243-001 spring, and logo.
7. Screw kit * 147885-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.13 Keyboards
Table 1-9. Contura Notebook Keyboards
===========================================================================
Description Spare Part Number
===========================================================================
1. CPU Cover Includes: 147860-001
a. PC Card door
b. spring *
c. indicator panel
d. light deflector
2. U.S. 147875-001
3. U.K. 147875-003 *
4. German 147875-004 *
5. French 147875-005 *
6. Italian 147875-006 *
7. Spanish 147875-007 *
8. Danish 147875-008 *
9. Norwegian 147875-009 *
10. Swedish/Finnish 147875-010 *
11. Swiss 147875-011 *
12. French Canadian 147875-012 *
13. Portuguese 147875-013 *
14. Latin American 147875-016 *
15. Belgian 147875-018 *
16. Japanese 147875-019 *
17. Korean 147875-033 *
18. Brazilian 147875-035 *
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Table 1-10. Contura Enhanced Keyboards
===========================================================================
Description Spare Part Number
===========================================================================
1. Enhanced II Keyboard - Domestic 140536-101
2. Enhanced III Keyboard - U.K. 140536-103
3. Enhanced III Keyboard - German 140536-104 *
4. Enhanced III Keyboard - French 140536-105 *
5. Enhanced III Keyboard - Italian 140536-106 *
6. Enhanced III Keyboard - Spanish 140536-107 *
7. Enhanced III Keyboard - Danish 140536-108 *
8. Enhanced III Keyboard - Norwegian 140536-109 *
9. Enhanced III Keyboard - Swedish/Finnish 140536-110 *
10. Enhanced III Keyboard - Swiss 140536-111 *
11. Enhanced III Keyboard - French Canadian 140536-112 *
12. Enhanced III Keyboard - Portuguese 140536-113 *
13. Enhanced III Keyboard - Turkish 140536-114 *
14. Enhanced III Keyboard - Greek 140536-115 *
15. Enhanced III Keyboard - Latin American 140536-116 *
16. Enhanced III Keyboard - Arabic 140536-117 *
17. Enhanced III Keyboard - Belgian 140536-118 *
18. Enhanced III Keyboard - Japanese 140536-119 *
19. Enhanced III Keyboard - BHCSY ** 140536-120 *
20. Enhanced III Keyboard - Hungarian 140536-121 *
21. Enhanced III Keyboard - Polish 140536-122 *
22. Enhanced III Keyboard - Slovakian 140536-123 *
23. Enhanced III Keyboard - Russian 140536-124 *
24. Enhanced III Keyboard - Czech 140536-129 *
25. Enhanced III Keyboard - Thai 140536-130 *
26. Enhanced III Keyboard - Beijing 140536-132 *
27. Enhanced III Keyboard - Segul 140536-133 *
28. Enhanced III Keyboard - Taipei 140536-134 *
29. Enhanced III Keyboard - Brazil 140536-135 *
---------------------------------------------------------------------------
* Not Shown
** Bosnia-Herzegovina, Croatia, Slovenia, and Yugoslavia
===========================================================================
Chapter 1.14 Cables (Models 400 and 410)
Table 1-11. Cables for Models 400 and 410
===========================================================================
Description Spare Part Number
===========================================================================
1. Display cables 147884-001
a. CSTN (9.5 in) Models 400 and 410
b. MSTN (9.5 in) (Model 400 only)
c. CTFT (8.4 in) Models 400 and 410
d. Ground cable for Models 400 and 410
---------------------------------------------------------------------------
2. Diskette cable 147866-001
===========================================================================
Chapter 1.15 Cables (Models 420 and 430)
Table 1-12. Cables for Models 420 and 430
===========================================================================
Description Spare Part Number
===========================================================================
1. Display cables 189247-001
a. CTFT (10.4 in) Models 420 and 430
b. CSTN (10.4 in) Models 420 and 430
c. XOVER board for CSTN (10.4 in) only
d. Ground cable for Models 420 and 430
---------------------------------------------------------------------------
2. Diskette cable 147866-001
===========================================================================
Chapter 1.16 Ac Adapter and Power Cord
Table 1-13. Contura AC Adapter and Power Cord
===========================================================================
Description (All Models) Spare Part Numbers
===========================================================================
1. AC adapter with wallprongs 147679-001
2. AC adapter 147679-002
3. Power cord (U.S./Canada) 197230-001
4. Power cord (U.K.) 197232-001 *
5. Power cord (Europe) 197231-001 *
6. Power cord (Japan) 197233-001 *
7. Power cord (Australia) 197234-001 *
---------------------------------------------------------------------------
* Not shown
===========================================================================
Chapter 1.17 Memory and Processor
Table 1-14. Contura Memory and Processor
===========================================================================
Description (All Models) Spare Part Numbers
===========================================================================
1. Memory expansion board
a. 4 MB 147654-001
b. 8 MB 147656-001
c. 16 MB 147658-001
d. 24 MB * 189261-001
2. Processor upgrade (Model 400 only)
486 DX2/50 MHz 169644-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.18 Miscellaneous Carrying Devices
Table 1-15. Miscellaneous Carrying Devices
===========================================================================
Description (All Models) Spare Part Numbers
===========================================================================
1. Briefcase, Ramie 129930-001
2. Slipcase 194162-001
3. Briefcase, SS (soft-sided) 121423-001 *
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.19 Docking Base and Monitor Support Cover
Table 1-16. Docking Base and Monitor Support Cover
===========================================================================
Description (All Models) Spare Part Numbers
===========================================================================
1. Docking Base - Ethernet 147675-001
2. Docking Base - pass-thru 147699-001
3. Docking base miscellaneous 169666-001
a. Battery door
b. Feet
c. Handle
d. Screws (Quantity = 2)
4. Monitor support cover 147676-001
5. Monitor support cover foot 169681-001
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.20 Miscellaneous CPU Kits
Table 1-17. Miscellaneous Contura CPU Kits
===========================================================================
Description Spare Part Number Spare Part Number
Models 400 & 410 Models 420 & 430
===========================================================================
Handle 147678-001 * 147678-001 *
---------------------------------------------------------------------------
Automobile adapter 190551-002 * 190551-002 *
---------------------------------------------------------------------------
Memory door assembly
includes hard drive tray 169713-001 * 169713-001
---------------------------------------------------------------------------
Carton, (Quantity = 5) 147862-001 * 147862-001 *
---------------------------------------------------------------------------
Carton and buns, (Quantity = 1) 147863-001 * 147863-001 *
---------------------------------------------------------------------------
Clutches (left and right) 147858-001 * 147858-001 *
---------------------------------------------------------------------------
Anti-skid feet 147859-001 * 147859-001 *
---------------------------------------------------------------------------
Plate logo 197251-001 * 189292-001 *
---------------------------------------------------------------------------
Box, 420C 189265-001 *
---------------------------------------------------------------------------
SpeedPaq 192 Data Fax Cellular 187123-001
Modem
---------------------------------------------------------------------------
PC Card (PCMCIA) 288 Fax/Modem 189661-001 *
---------------------------------------------------------------------------
PC Card (PCMCIA) 192 Fax/Modem 188512-001 *
---------------------------------------------------------------------------
PC Card (PCMCIA) modem pouch 194133-001 *
---------------------------------------------------------------------------
CA, TEL MED 187145-001 *
---------------------------------------------------------------------------
Keyboard Warning Label, English 189288-001 *
---------------------------------------------------------------------------
Country Kit 140204-001 *
---------------------------------------------------------------------------
Trackball removal tool 147779-001 * 147779-001 *
---------------------------------------------------------------------------
Miscellaneous 147874-001 * 189262-001 *
Includes:
Trough
Battery latch
Battery tray
PC Card door
PC Card ejection levers and pin
Extension spring (battery eject button,
display latches)
Lock plate provision
Keyboard ground clips
Left clutch ground clip
Right clutch ground clip
Flex ground clip
Hard Drive Tray
---------------------------------------------------------------------------
* Not Shown
===========================================================================
Chapter 1.21 Fastener List
Table 1-18. Fastener Kit for All Models
===========================================================================
Description: Spare Part Number
---------------------------------------------------------------------------
Screws and Fastners Kit (Quantity = 25 each) 147885-001
===========================================================================
===========================================================================
Description Type Where Used Part Number Drive Qty
===========================================================================
M2.5 x 4.0 Truss Ground tabs on 144864-001 SL/T8 3 *
display shields
Diskette bracket 3
to system board
Hold down system 5 *
board to base and 4 **
chassis
Trackball assembly 1 *
to base 2 **
Battery contracts 2
to base/through
system board
CPU cover to 7
keyboard
Clutches to 4 *
display enclosure
(Models 400 and
410)
---------------------------------------------------------------------------
M2.5 x 5.0 Truss CPU base to 144865-007 SL/T8 4
clutches Blk 4
Display bezel to
display enclosure
Ground tabs on 2 **
display shields
(Models 420 and
430)
Clutches to 4 **
display enclosure
(Models 420 and
430)
Display to display
enclosure 4 **
---------------------------------------------------------------------------
Description Type Where Used Part Number Drive Qty
---------------------------------------------------------------------------
M3.0 x 8.0 Pan Display to display 121187-007 SL/T8 4 **
enclosure
---------------------------------------------------------------------------
M2.5 x 24.0 Truss CPU cover to CPU 144865-006 SL/T8 7
base
---------------------------------------------------------------------------
M2.6 x 2.0 Fillister Diskette drive 121188-001 T8 4
to FDD bracket
---------------------------------------------------------------------------
M3.0 x 3.6 Truss Hard drive to HDD 121187-001 T8 4
bracket
---------------------------------------------------------------------------
M2.0 x 6.0 Fillister PC Card Header 126790-004 T8 2 **
---------------------------------------------------------------------------
M2.0 x 15.5 Fillister PCMCIA rails 126790-010 T8 2
---------------------------------------------------------------------------
Spring, PC Card door 147758-001 2
torsion actuation
---------------------------------------------------------------------------
Spring, Battery latch 147759-001 1
extension return spring
Display latch 2
return spring
---------------------------------------------------------------------------
Washer Under handle 147923-001 2
bracket
---------------------------------------------------------------------------
M2.5 Shoulder Handle bracket to 147760-001 T8 2
clutch/through CPU
base
---------------------------------------------------------------------------
M2.5 Shoulder CPU foot to 147778-001 T8 2
clutch/through CPU
base
---------------------------------------------------------------------------
4-40 Screw Three connectors 106902-001 3/16 6
locks at rear of unit
---------------------------------------------------------------------------
Alignment Shoulder Alignment screws 169643-001 T8 2
screws for docking base
connector
---------------------------------------------------------------------------
* Models 400 and 410
** Models 420 and 430
===========================================================================
Chapter 1.22 Documentation and Software
Table 1-19. Documentation and Software
===========================================================================
Description (All Models) Spare Part Number
===========================================================================
MAINTENANCE AND SERVICE GUIDE 147861-001
---------------------------------------------------------------------------
Online USER'S GUIDE
English 147990-001
German 147990-041
French 147990-051
Italian 147990-061
Spanish 147990-071
Netherlands 147990-331
Swedish 147990-101
---------------------------------------------------------------------------
Manuals - English 147989-001
QUICK SETUP
BEYOND SETUP
---------------------------------------------------------------------------
Manuals - German 147989-041
QUICK SETUP
BEYOND SETUP
KEYBOARD REFERENCE
---------------------------------------------------------------------------
Manuals - French 147989-051
QUICK SETUP
BEYOND SETUP
KEYBOARD REFERENCE
---------------------------------------------------------------------------
Manuals - Italian 147989-061
QUICK SETUP
BEYOND SETUP
KEYBOARD REFERENCE
---------------------------------------------------------------------------
Manuals - Spanish 147989-071
QUICK SETUP
BEYOND SETUP
KEYBOARD REFERENCE
---------------------------------------------------------------------------
Manual - TABWORKS QUICK START GUIDE
English 195866-001
German 195866-041
French 195866-051
Italian 195866-061
Spanish 195866-071
Swedish 195866-101
Netherlands 195866-331
---------------------------------------------------------------------------
Manual - AMERICA ONLINE 181194-001
---------------------------------------------------------------------------
Manual - MS WORKS 196077-001
---------------------------------------------------------------------------
Manual - ESSENTIALS OF MS-DOS AND MS-WINDOWS
English 144958-001
German 144958-041
French 144958-051
Italian 144958-061
Spanish 144958-071
Swedish 144958-101
Portuguese 144958-131
Dutch 144958-331
---------------------------------------------------------------------------
Manual - MS-DOS GUIDE, 6.0 and MS Windows
English 195973-001
German 195973-041
French 195973-051
Italian 195973-061
Spanish 195973-071
Danish 195973-081
Norwegian 195973-091
Swedish 195973-101
Portuguese 195973-131
Dutch 195973-331
Finnish 195973-351
---------------------------------------------------------------------------
Manual - LOTUS ORGANIZER
English 137885-001
German 137885-041
French 137885-051
Italian 137885-061
Spanish 137885-071
Danish 137885-081
Norwegian 137885-091
Swedish 137885-101
Dutch 137885-331
Finnish 137885-351
---------------------------------------------------------------------------
COMPAQ SERVICE QUICK REFERENCE GUIDE 106854-001
---------------------------------------------------------------------------
ROMPaq diskette 181088-001
===========================================================================
Chapter 2. Preparing the Computer for Service
Introduction
This chapter provides general service information necessary to prepare the
computer for service in the following areas:
o Electrostatic discharge
o Service preliminaries
o Battery disposal
Adherence to the procedures and precautions described in this chapter is
essential for proper service.
Chapter 2.1 Electrostatic Discharge
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Static electricity can damage electronic components. Before beginning
these procedures, make sure you are grounded (discharged of static
electricity) by briefly touching a grounded, unpainted, metal object or
surface.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
A sudden discharge of static electricity from a finger or other conductor
can destroy static-sensitive devices or micro circuitry. 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 will work
perfectly throughout a normal cycle. Or it 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.
This section details methods of generating, preventing, and grounding
static electricity.
Generating Static
Table 2-1 shows how different activities generate static electricity and
at different electrostatic voltage levels.
Table 2-1. Typical Electrostatic Voltages
===========================================================================
Relative Humidity
Event 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.
===========================================================================
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:
o Protect all electrostatic parts and assemblies with conductive or
approved containers or packaging.
o Keep electrostatic sensitive parts in their containers until they arrive
at static-free stations.
o Place items on a grounded surface before removing them from their
container.
o Always be properly grounded when touching a sensitive component or
assembly.
o Place reusable electronic-sensitive parts from assemblies in protective
packaging or conductive foam.
Use transporters and conveyors made of anti-static belts and metal roller
bushings. Mechanized equipment used for moving materials must be wired to
ground and proper materials selected to avoid static charging. When
grounding is not possible, use an ionizer to dissipate electric charges.
Preventing Damage to Drives
To prevent static damage to hard drives, use the following precautions:
o Handle drives gently, using static-guarding techniques.
o Store drives in the original shipping containers.
o Avoid dropping drives from any height onto any surface.
o Handle drives on surfaces that have at least one inch of shock proof
foam.
o Always place drives PCB assembly side down on the foam.
Grounding Methods
The method for grounding must include a wrist strap or a foot strap at a
grounded workstation. When seated, wear a wrist strap connected to a
grounded system. When standing, use footstraps and a grounded floor mat.
Table 2-2. Static-Shielding Protection Levels
===========================================================================
Method Voltages
===========================================================================
Anti-static Plastic 1,500
Carbon-Loaded Plastic 7,500
Metallized Laminate 15,000
===========================================================================
Grounding Workstations
To prevent static damage at the workstation, follow these precautions:
o Cover the workstation with approved static-dissipative material.
Provide a wrist strap connected to the work surface and properly
grounded tools and equipment.
o Use static-dissipative mats, heel straps, or air ionizers to give added
protection.
o Handle electrostatic sensitive components, parts, and assemblies by the
case or PCB laminate. Handle them only at static-free workstations.
o Avoid contact with pins, leads, or circuitry.
o Turn off power and input signals before inserting and removing
connectors or test equipment.
o Use fixtures made of static-safe materials when fixtures must directly
contact dissipative surfaces.
o Keep work area free of nonconductive materials such as ordinary plastic
assembly aids and Styrofoam.
Grounding Equipment
Use the following equipment to prevent static electricity damage to the
equipment:
Wrist Straps are flexible straps with a minimum of 1 megohm +/-10%
resistance to the ground cords. To provide proper ground, a strap must be
worn snug against the skin. On grounded mats without banana-plug
connectors, connect a wrist strap with alligator clips.
Heelstraps/Toestraps/Bootstraps can be used at standing workstations and
are compatible with most types of boots and shoes. On conductive floors or
dissipative floor mats, use straps on both feet with a minimum of 1 megohm
of resistance between operator and ground. To be effective, the conductive
strips must be worn in contact with the skin.
Field service tools, such as cutters, screwdrivers, vacuums, that are
conductive.
Portable field service kit with a static dissipative vinyl pouch that
folds out of a work mat. Also use a wrist strap and a ground cord for the
work surface. Ground the cord to the chassis of the equipment undergoing
test or repair.
Recommended Materials and Equipment
Other materials and equipment that are recommended for use in preventing
static electricity include:
o Anti-static tape
o Anti-static smocks, aprons, or sleeve protectors
o Conductive bins, and other assembly or soldering aids
o Conductive foam
o Conductive table-top workstations with ground cord of 1 megohm of
resistance
o Static dissipative table or floor mats with hard tie to ground
o Field service kits
o Static awareness labels
o Wrist straps and footwear straps providing 1 megohm +/- 10% resistance
o Material handling packages
o Conductive plastic bags
o Conductive plastic tubes
o Conductive tote boxes
o Metal tote boxes
o Opaque shielding bags
o Transparent metallized shielding bags
o Transparent shielding tubes
Chapter 2.2 Service Preliminaries
Some of the service preliminaries that should be kept in mind during the
disassembly and assembly of the computer include:
o Tool requirements
o Screws
o Cable and connectors
o Plastics
Tool Requirements
o Flat-bladed screwdriver
o Torx T8 screwdriver (included in 130619-001)
o Hex socket driver (3/16)
o 25-Pin printer loopback plug (included in 100767-001)
o 9-Pin serial loopback plug (included in 100767-001)
o Trackball removal tool (spare part number 147779-001)
o Case Utility tool (spare part number 119070-001 and included in
100767-001))
o Preloaded application diskettes (Compaq Order Center, 1-800-952-7689)
Cables and Connectors
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Most cables used throughout the unit are flex cables. These cables must
be handled with extreme 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 or pull tabs whenever possible.
In all cases, avoid bending, twisting, or tearing the cables, and ensure
that cables are placed in such a way that they cannot be caught or snagged
by parts being removed or replaced.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
When servicing these computers, ensure that cables are placed in their
proper location during the reassembly process. Improper cable placement
can cause severe damage to the unit.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Display
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Excess flexing and bending of the shield tabs and fingers can damage the
shield.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Keyboard
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
The computer becomes top heavy when the keyboard assembly is removed and
the display is opened. To prevent damage to the display and the computer,
ensure that the display assembly is opened at a 90-degree angle.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Memory Expansion Board
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
To prevent damage to the memory expansion board, do not apply pressure to
the middle of the board. Press only in the area directly over each
connector.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Plastics
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
The plastics can be damaged by applying excessive force during disassembly
and reassembly. When handling the plastic cases and housing assemblies,
use care. Do not use screwdrivers or similar tools to pry apart plastics.
Where necessary, use the Case Utility tool (spare part number 119070-001).
Proper handling of this tool is illustrated in the disassembly and
reassembly procedures.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Screws
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
The screws used in these products are not interchangeable. If an
incorrect screw is used during the reassembly process, it could cause
damage to the unit. Compaq strongly recommends that all screws removed
during the disassembly process be kept with the part that was removed,
then returned to their proper locations.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Real-Time Clock Battery
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Do not touch the bottom of the battery during replacement.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Chapter 2.3 Disposal of a Used Battery
Battery components are considered environmentally harmful. Disposal of a
Nickel Metal Hydride (NiMH) Battery Pack should comply with country,
state, province, or local regulations. Whenever possible, recycle the
battery components.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Never attempt to open or service a battery pack. Opening a battery pack
not only damages the pack and makes it unusable, but also exposes
potentially harmful battery components.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> WARNING <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
There is a danger of explosion and risk of personal injury if the battery
is incorrectly replaced or mistreated. Do not attempt to recharge the
battery, disassemble it, or immerse it in water or dispose of it in fire.
Replacement is to be done by Authorized Compaq Service Provider using the
Compaq spare designated for this product.
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
Compaq offers its portable product customers in North America an
environmentally sound method for disposing of depleted Compaq rechargeable
battery packs used in Compaq laptop and subnotebook personal computers.
In the interest of our customers and the protection of our environment,
Compaq has initiated a disposal/recycling program for these battery packs.
Further, because Compaq is funding all costs associated with the program,
it is offered at no cost to Compaq laptop and notebook customers.
IMPORTANT: Toll-Free Number (U. S.) 1-800-524-9859, (Canada)
1-800-263-5868
Customers in North America can take advantage of this program immediately.
To safely dispose of a depleted Compaq rechargeable battery pack, follow
these steps:
1. Call the Compaq toll-free telephone number. A recorded message asks you
to provide your name, mailing address, and information about the
battery pack. Within approximately two to three weeks, Compaq will send
a postage-paid "battery mailer" envelope preaddressed to the
reclamation facility.
2. Place the Compaq rechargeable battery pack into the battery mailer.
3. Mail it to the Compaq address shown on the mailer.
NOTE: Do not return Compaq rechargeable battery packs to authorized Compaq
service providers (except in the case of service or warranty
exchanges) nor to any Compaq address other than the address on the
preaddressed battery mailer envelope.
Chapter 3. Removal and Replacement Procedures
Introduction
This chapter provides complete removal and replacement procedures for the
Compaq Contura 400 Family of Personal Computers. Procedures that apply to
specific models are indicated in parenthesis.
After completing removal and replacement procedures, run the diagnostics
program to verify that all components operate properly.
For replacement procedures, follow the removal procedures in reverse order
unless otherwise specified.
Chapter 3.1 Disassembly/Assembly Sequence Chart
This chart shows the order in which disassembly procedures are provided:
|-- 3.2 PREPARING THE COMPUTER
| |-- AC Adapter
| |-- Battery pack
|
|-- 3.3 HANDLE BRACKET
|
|-- 3.4 TILT FEET
|
|-- 3.5 HARD DRIVE
|
|-- 3.6 MEMORY EXPANSION BOARD
|
|-- 3.7 KEYBOARD ASSEMBLY
| |-- CPU cover
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