Compaq Contura 400 Compaq Contura 400 Family of Personal Computers Maintenance
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- Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 1
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 2
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 3
o Compaq Service Quick Reference Guide o Service Training Guides o Compaq Service Advisories and Bulletins o Compaq QuickFind - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 4
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. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 5
Number The computer serial numbers should be provided to Compaq whenever requesting information or ordering spare parts. The 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 6
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 7
hard drive bracket attaches to the hard drive with four screws. o Memory expansion -- System memory can be upgraded with optional memory expansion 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 8
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 9
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 10
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 11
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 12
Chapter 1.5 Docking Base The docking base includes the following replaceable parts: o Battery door o Feet o Handle - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 13
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. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 14
Chapter 1.7 System Unit Module Parts - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 15
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 16
6. Real-time clock battery 117099-001 7. Mechanical Trackball 147876-001 8. PC Card ejection Includes the 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 17
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 18
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. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 19
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 20
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 21
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 22
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 23
a. display cable b. display ground cable 5. Display clutch (left and right) 147858-001 Includes screws for handle bracket, washer, tilt feet 6. Display enclosure kit 147881-001 Includes enclosure, latch, spring, and logo 7. Screw kit * 147885-001 * Not Shown Chapter 1.12 Color TFT - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 24
bracket, washer, tilt feet 6. Display enclosure kit 189243-001 Includes enclosure, latch, spring, and logo. 7. Screw kit * 147885-001 * Not Shown Chapter 1.13 Keyboards Table 1-9. Contura Notebook Keyboards Description Spare Part Number - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 25
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- - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 26
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 27
. 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) - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 28
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) - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 29
) 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 30
Table 1-13. Contura AC Adapter and Power Cord Description (All Models) Spare Part Numbers 1. AC adapter with wallprongs 147679- cord (Europe) 197231-001 * 6. Power cord (Japan) 197233-001 * 7. Power cord (Australia) 197234-001 * * Not shown Chapter 1.17 Memory and Processor - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 31
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 32
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 33
147675-001 2. Docking Base - pass-thru 147699-001 3. Docking base miscellaneous a. Battery door b. Feet c. Handle d. Screws (Quantity = 2) 169666-001 4. Monitor support cover 147676-001 5. Monitor support cover foot 169681-001 * Not Shown Chapter 1.20 Miscellaneous CPU Kits Table - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 34
400 & 410 Models 420 & 430 Handle 147678-001 * 147678-001 * Automobile adapter 190551-002 * 190551-002 * Memory door assembly includes hard drive Includes: Trough Battery latch Battery tray PC Card door PC Card ejection levers and pin Extension spring (battery eject button, - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 35
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 base 1* 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 36
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 37
-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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 38
-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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 39
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 40
V 800 V 400 V Removing DIPS from plastic tubes 2,000 V 700 V 400 V Removing DIPS 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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 41
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 42
-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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 43
number 119070-001 and included in 100767-001)) o Preloaded application diskettes (Compaq Order Center, 1-800-952-7689) Cables and Connectors CAUTION Most caught or snagged by parts being removed or replaced CAUTION When servicing these computers, ensure that cables are placed in their proper - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 44
-degree angle. Memory Expansion Board CAUTION To prevent damage to the memory expansion board, cause damage to the unit. Compaq strongly recommends that all screws Battery CAUTION Do not touch the bottom of the battery during replacement. Chapter 2.3 Disposal of a Used Battery Battery - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 45
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 46
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 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 47
(PCMCIA) EJECTION LEVERS AND PIN | |-- 3.18 PC Card (PCMCIA) DOORS AND SPRINGS | |-- 3.19 SYSTEM CHASSIS | |-- Trough | |-- 3.20 CPU BASE | |-- Battery shield clip | |-- Lock provision plate | |-- Anti-skid pads | |-- 3.21 DISPLAY ASSEMBLY COMPONENTS (Models 400 and 410) | |-- Bezel | |-- Latches - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 48
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 these steps to disconnect all power to the computer and remove the diskette or PC Card, if installed: 1. Save all files and exit all applications. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 49
5. Disconnect the AC Adapter power cord from the computer (Figure 3-2). 6. Eject the diskette (Figure 3-2) and PC Card, if installed. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 50
7. Open the battery compartment by lifting up the front of the computer [1] and sliding the battery compartment release button to the right [2]. The battery compartment opens slightly. Lower the compartment [3] (Figure 3-3). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 51
8. Remove the battery pack (Figure 3-4). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 52
damage, do not let metal objects touch any of the connectors. Do not place any objects other than the battery pack in the battery compartment 9. Close the battery compartment. Chapter 3.3 Handle Bracket This procedure is necessary if replacing the handle bracket or if separating the display - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 53
2. Close the computer and turn it top-side down. 3. Move the tilt foot toward the front of the computer, exposing the handle bracket screw on either side of the computer (Figure 3-5). 4. Using a Torx T8 , remove the screw and washer from each handle bracket. These screws are not reusable and must be - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 54
. Removing the Tilt Feet To remove the tilt feet, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Using a Torx T8 , remove the tilt foot screw (Figure 3-7). Screws from the tilt feet are not reusable and must be discarded - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 55
following hard drive components: o Hard drive compartment cover o Hard drive o Hard drive bracket Removing the Hard Drive Compartment Cover To remove the hard drive compartment cover, follow these steps: 1. Disconnect all power from the computer and remove the battery pack, diskette, and PC Card, if - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 56
2. Close the computer and turn it top-side down. 3. Using a Torx T-8 or flat-bladed screwdriver, remove the two screws from the hard drive compartment cover (Figure 3-8). NOTE: These two screws also secure the CPU base to the keyboard and must be removed in order to remove the keyboard - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 57
the bracket's tab under the plastic edge. Removing the Hard Drive 1. Remove the hard drive compartment cover. Refer to "Removing the Hard Drive Compartment Cover" in this section. 2. Remove the hard drive by grasping the hard drive bracket and sliding it toward the front of the computer [1] (Figure - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 58
, reverse the previous steps. Removing the Hard Drive Bracket 1. Remove the hard drive compartment cover. Refer to "Removing the Hard Drive Compartment Cover" in this section. 2. Remove the hard drive and bracket. Refer to "Removing the Hard Drive" in this section. 3. Using a Torx T8 , remove the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 59
board connectors, ensure that the hard drive is aligned correctly. IMPORTANT: The hard drive bracket has four screw holes, one of which is elongated and one is small. When replacing the hard drive into the hard drive bracket, replace the screw in the small hole first [1], then insert the second - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 60
section contains removal and replacement procedures for the memory compartment cover and the memory expansion board. The memory compartment cover and the bottom of the CPU base are embossed with arrows and two icons that indicate whether the memory compartment cover is unlocked [1] or locked [2]. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 61
cover, follow these steps: 1. Disconnect all power from the computer and remove the battery pack, diskette, and PC Card, if installed (Section 3.2). 2. Close the computer and turn it top-side down. 3. Slide the memory compartment cover toward the rear of the computer and lift up (Figure 3-14 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 62
, reverse the previous steps. Removing the Memory Expansion Board To remove the memory expansion board, follow these steps: 1. Remove the memory compartment cover. Refer to "Removing and Replacing the Memory Compartment Cover" in this section. 2. Gently rock the memory expansion board back and forth - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 63
apply pressure to the middle of the board. Press only in the area directly over each connector 2. Insert the memory expansion board into the compartment and press the memory expansion board down. Apply pressure directly over each connector. Ensure that both connectors snap into place (Figure 3-16 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 64
cover. Refer to " Removing and Replacing the Memory Compartment Cover" in this section. Chapter 3.7 Keyboard Assembly This section contains removal and replacement procedures for the following the keyboard assembly components: o CPU cover o Keyboard o Top PC Card door and spring NOTE: The bottom - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 65
battery pack (Section 3.2). 2. Close the computer and turn it top-side down. CAUTION Screws in the computer are not interchangeable. As a Torx T-8 or flat-bladed screwdriver, remove the five screws from the bottom of the computer and two screws from the hard drive compartment cover (Figure 3-17). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 66
4. Use a case utility tool to remove the hard drive compartment cover (Figure 3-18). 5. Carefully, turn the computer top-side up and open the display to its fully opened position (135-degree angle) (Figure 3-19). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 67
assembly toward you to release the keyboard connector [2] (Figure 3-20). IMPORTANT: When using the case utility tool, use care to keep it out of the diskette drive area. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 68
top heavy when the keyboard assembly is removed and the display is opened. To prevent damage to the display and the computer, be sure to support the computer when opening the display. 7. Remove the keyboard assembly by lifting it up [1] and off the front of the computer [2] (Figure 3-21 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 69
8. Position the display to a 90-degree angle (Figure 3-22). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 70
Removing the CPU Cover To remove the CPU cover for replacement, follow these steps. 1. Remove the keyboard assembly from the computer. Refer to "Removing the Keyboard Assembly" in this section. 2. Turn the keyboard assembly top-side down. CAUTION Note the position of the screws removed from the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 71
CPU cover from the keyboard (Figure 3-23). 5. To replace the CPU cover, reverse the previous steps. Removing the Top PC Card (PCMCIA) Door and Spring To remove the top PC Card door and spring from the keyboard assembly, follow these steps: 1. Remove the keyboard assembly from the computer. Refer to - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 72
Replacing the Top PC Card (PCMCIA) Door and Spring To replace the top PC Card Door and Spring to the keyboard assembly, follow these steps: 1. Install the PC Card spring on the door post, ensuring that the bent arm of the spring is placed against the rib on the PC Card door (Figure 3-25). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 73
2. Install the PC Card (PCMCIA) door, ensuring that the spring is placed between the post [1] and the rib [2] (Figure 3-26). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 74
loop fastener. 2. Attach the opposite color of the hook and loop fastener to the existing hook and loop fastener on the tab on the diskette drive bracket [1] (Figure 3-27). 3. Remove the top layer from the hook and loop fastener to expose the adhesive strip prior to replacing the keyboard assembly - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 75
To replace the existing keyboard assembly in the computer, follow these steps: 1. Open the display to its fully opened position of 135-degrees (Figure 3-28). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 76
2. Angle the front end of the keyboard assembly into place at the front edge of the system unit module. 3. Ensure that the front plastic seams of the keyboard assembly and the front of the system unit module are aligned and flush with each other. 4. Carefully lower the rear of the keyboard assembly - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 77
section contains removal procedures for the following battery compartment components: o Battery compartment o Anti-skid pad o Battery release button spring o Battery release button Removing the Battery Compartment To remove the battery compartment components, follow these steps: 1. Disconnect all - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 78
compartment, reverse the previous steps. Attaching the Anti-Skid Pads If installing a new battery compartment, two anti-skid pads must be attached to the bottom of the battery compartment. To attach the anti-skid pads, follow these steps: 1. Peel off the top layer of one of the anti-skid pads - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 79
and the computer, ensure that the display assembly is opened to a 90-degree angle 2. Remove the keyboard assembly (Section 3.7). 3. From the battery enclosure, remove the battery release button spring by unhooking the spring from the post on the CPU base [1], then releasing it from the hook on the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 80
4. Rotate the battery release button counterclockwise, until it bows slightly, and lift it up to clear the hook on the computer base (Figure 3-33). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 81
spring, reverse the previous steps. Chapter 3.9 Real-Time Clock Battery (Models 400 and 410) To remove the real-time clock battery, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes top heavy when - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 82
to release it (Figure 3-34). NOTE: Refer to Chapter 2 "Preparing the Computer for Service" for battery disposal procedures. CAUTION Do not touch the bottom of the battery during replacement 4. To replace the real-time clock battery, reverse the previous steps. Chapter 3.10 Real-Time Clock - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 83
3. Remove the real-time clock battery from the system board by inserting a non conductive probe into the battery holder and pushing back on the battery to release it (Figure 3-35). NOTE: Refer to Chapter 2 "Preparing the Computer for Service" for battery disposal procedures. CAUTION Do not touch - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 84
installation and replacement procedures for the processor upgrade. The Compaq Contura 400 is the only model with the DX2/40 MHz : 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes top heavy when the keyboard assembly - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 85
previous steps. Chapter 3.12 Integrated Mechanical Trackball Assembly (Models 400 and 410) IMPORTANT: The mechanical trackball assembly is not Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes top heavy when the keyboard - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 86
2. Remove the keyboard assembly (Section 3.7). 3. Using a Torx T-8 or flat-bladed screwdriver, remove the screw from the front right-hand corner of the integrated mechanical trackball assembly (Figure 3-37). 4. Disconnect the integrated mechanical trackball assembly from the system board by pulling - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 87
Procedures 1. Turn off the computer by pressing the left Ctrl+Alt keys and the power button. Disconnect the AC power and remove the battery pack. 2. Loosen the trackball retaining ring by placing the trackball tool over the retaining ring and turning the tool counterclockwise one quarter turn - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 88
may have accumulated on or around the cage, rollers, or support post. 8. Let the unit air dry before reassembling it. the mechanical trackball assembly in Models 400 and 410. To remove the integrated the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 89
2. Remove the keyboard assembly (Section 3.7). 3. Using a Torx T-8 or flat-bladed screwdriver, remove the screw from the front right-hand corner and the left rear corner of the trackball assembly (Figure 3-39). 4. Disconnect the integrated optical trackball assembly from the system board by - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 90
mechanical trackball assembly, reverse the previous steps. Trackball Cleaning Procedures 1. Turn off the computer, disconnect AC power, and remove the battery pack. 2. Remove the Integrated trackball. 3. Remove any large particles of debris that have fallen into the trackball housing. 4. Dip - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 91
for the following diskette drive components: o Diskette Drive o Diskette Drive Bracket o Diskette Drive Insulator Strip Removing the Diskette Drive To remove the diskette drive, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 92
the components you removed. Damage may occur if you insert the screws in the wrong place. 4. Using a Torx T-8 or flat-bladed screwdriver, remove the three diskette drive bracket screws that screw into the system board (Figure 3-42). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 93
CAUTION When removing or replacing the diskette drive, hold it by grasping the vertical sides. Pressure to the front drive door area of the diskette drive will cause the drive door to pop out from the mounting. 5. Tilt up the diskette drive bracket, then lift it up and out of the system - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 94
Removing the Diskette Drive from the Diskette Drive Bracket 1. Remove the diskette drive from the system chassis. Refer to "Removing the Diskette Drive" in this section. 2. Remove the diskette drive from the bracket by removing the four screws from both sides of the bracket (Figure 3-44). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 95
3. Separate the diskette drive from the bracket (Figure 3-45). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 96
the bracket, reverse the previous steps. Applying the Diskette Drive Hook and Loop Fastener If installing a new diskette drive bracket, the hook and loop fastener must be attached to the bracket. To attach the hook and loop fastener, follow these steps: 1. Separate the new - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 97
grasping the vertical sides. Pressure to the front drive door area of the diskette drive will cause the drive door to pop out from the mounting. 1. Replace the diskette drive into the diskette drive bracket. Use the four screws to secure the diskette drive to the bracket. 2. Tow in the back end - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 98
4. Reconnect the Diskette Drive Cable and reinstall the three screws. Chapter 3.15 The System Board (All Models) To remove the system board, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the hard drive (Section 3.5). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 99
processor upgrade, if installed (Section 3.11). 8. Remove the integrated trackball assembly (Section 3.12 for Models 400 and 410 and Section 3.13 for Models 420 and 430). 9. Remove the diskette drive (Section 3.14 CAUTION The ZIF connector and its attached cable can be damaged easily. Handle only - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 100
10. Disconnect the display cable from the system board by pulling up both ends of the ZIF connector slide simultaneously [1], carefully opening the slide [2] (Figure 3-49). 11. Lift the display cable out of the connector slide [3], being careful not to pull or twist the cable (Figure 3-49). 12. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 101
13. Remove the three keyboard ground clips from the system board (Figure 3-51). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 102
14. Remove the left clutch ground clip from the system chassis (Figure 3-52). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 103
15. For Models 400 and 410, using a Torx T8 or slotted driver, remove the five screws from the system board and the two screws from the battery contact (Figure 3-53). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 104
16. For Models 420 and 430, using a Torx T8 or slotted driver, remove the four screws from the system board and the two screws from the battery contact (Figure 3-54). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 105
17. From the front of the computer, tilt the system board up then lift the system board out of the system chassis (Figure 3-55). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 106
18. Remove the LIF clip from above the serial port connector between the system board and the system chassis (Figure 3-56). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 107
follow these steps: IMPORTANT: When installing a new system board, make sure that the insulator is placed between the system board and the diskette drive. The gasket over the Keyboard connector must be tucked under the Chassis. IMPORTANT: When replacing the system board, the screws must be replaced - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 108
2. Install screws [1] and [2] on the system board before replacing the remaining system board and battery contact screws for Models 400 and 410 (Figure 3-58) and for Models 420 and 430 (Figure 3-59). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 109
- Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 110
insulator is installed between the system board and diskette drive. The gasket over the keyboard connector must be tucked under the Chassis. Chapter 3.16 PC Card (PCMCIA) Assembly The PC Card assembly consists of the PC Card clip and PC Card rails. To remove the PC Card assembly or to remove part of - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 111
system board (Figure 3-60). 5. Loosen the Header screws [2] from the bottom of the system board. (Figure 3-60). 6. Remove the clip from the top of the PC Card (PCMCIA) header (Figure 3-60). CAUTION Do not over torque the clip, or it can be damaged 7. Replacement clips and rails on Models 420 and - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 112
of the system board. Removing the PC Card (PCMCIA) Rails NOTE: The rails for the 400 and 410 models are not interchangeable with the rails for the 420 and 430 models. To remove the PC Card rails, follow these steps. 1. Remove the PC Card clips. Refer to "Removing the PC Card Clip" in this section - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 113
removal and replacement procedures for the PC Card ejection levers and pin. To remove the PC Card ejection levers and pin, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the PC Card ejection lever pin from the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 114
4. Remove the bottom PC Card ejection lever from the boss on the CPU base (Figure 3-64) - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 115
door and spring are located on the CPU base. Top PC Card Door and Spring To remove the top PC Card door and spring, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes top heavy when the keyboard - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 116
door [1] from the post and remove the door (Figure 3-65). 4. Remove the spring [2] from the PC Card door (Figure 3-65). To replace the top PC Card (PCMCIA) door and spring, follow these steps: 1. Install the PC Card spring on the door rib, making sure the bent arm of the spring is placed against - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 117
2. Install the PC Card door, making sure the spring is placed between the notch [1] and the rib [2] (Figure 3-67). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 118
Card door and spring are located on the CPU base. To remove the bottom PC Card door and spring, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). CAUTION The computer becomes top heavy when the keyboard assembly is removed and - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 119
To replace the bottom PC Card (PCMCIA) spring and door, follow these steps: 1. Install the PC Card spring on the door post, making sure the bent arm of the spring is placed against the rib on the PC Card door (Figure 3-69). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 120
2. Install the PC Card door, making sure the spring is placed between the notch [1] and the rib [2] (Figure 3-70). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 121
Chassis (All Models) To remove the system chassis, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the handle bracket on either side of the computer (Section 3.3). 3. Remove the tilt feet on either side of the computer - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 122
7. Remove the four clutch screws from the rear of the system unit module (Figure 3-71). 8. Remove the display assembly from the system unit module (Figure 3-72). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 123
9. Slide the trough at the rear of the CPU base to the right, then lift up to remove (Figure 3-73). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 124
10. Remove the system chassis by gently separating it from the CPU base and lifting out the system chassis (Figure 3-74). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 125
section provides removal and replacement procedures for the following CPU base components: o Battery shield clip o Lock provision plate o Anti-skid pads Removing and Replacing the Battery Shield Clip To remove the battery shield clip, follow these steps: 1. Disconnect all power from the computer and - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 126
damage to the display and the computer, ensure that the display assembly is opened at a 90-degree angle 2. Remove the keyboard assembly (Section 3.7). 3. Remove the battery shield clip located between the battery enclosure and the right interior wall of the CPU base (Figure 3-75). 4. To replace the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 127
keyboard assembly (Section 3.7). 3. Remove the lock provision plate located between the battery enclosure and the right interior wall of the CPU base. The lock -Skid Pads If replacing the CPU base, two anti-skid pads for the battery tray and the two for the CPU base must be attached to the bottom - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 128
-side down, place the anti-skid pad into the raised oval outline on the CPU base and the battery tray (Figure 3-77). Chapter 3.21 Display Assembly Components (Models 400 and 410) This section contains removal and replacement procedures for the following display assembly components: o Bezel o Latches - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 129
to the equipment To remove the display bezel, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. 3. Remove the four screws from the display bezel (Figure 3-78). 4. Separate the display bezel from the display - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 130
from either side of the display enclosure, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. 3. Remove the display bezel. Refer to "Removing and Replacing the Display Bezel" in this section. 4. Hold the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 131
6. Remove the display latch spring from the latch (Figure 3-81). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 132
Replacing the Display Enclosure Springs and Latches To replace the display springs and latches, follow these steps: 1. Hook the display latch spring on to the display latch [1] and place the display latch spring over the post in the display enclosure [2] (Figure 3-82). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 133
2. Slide the display latch into place on either side of the display enclosure (Figure 3-83). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 134
the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to result in serious injury or damage to the equipment CAUTION When servicing the computer, ensure that cables are placed in their proper - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 135
posts on the display enclosure (Figure 3-84). WARNING Ensure that the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to disconnect power could result in serious injury or damage to the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 136
the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to discharge, which will damage the LCD panel. CAUTION When servicing the computer, ensure that cables are placed in their proper - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 137
with the three mounting posts. Chapter 3.22 Monochrome Display (Models 400 and 410) IMPORTANT: The Monochrome, CSTN, and CTFT displays 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION The computer becomes top heavy - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 138
4. Remove the display cable from the system board by pulling up both ends of the ZIF connector slide simultaneously [1], carefully opening the slide [2] (Figure 3-86). 5. Lift the display cable out of the connector slide [3], being careful not to pull or twist the cable (Figure 3-86). 6. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 139
top heavy when the keyboard assembly is removed and the display is opened. To prevent damage to the display and the computer, be sure to support the display assembly when it is fully opened at a - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 140
135-degree angle 10. Open the display to its fully open position of 135-degrees (Figure 3-88). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 141
12. Carefully remove the Monochrome LCD panel, display cable, and shield from the display enclosure (Figure 3-90). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 142
13. Lay the Monochrome LCD panel face down on a clean surface. 14. Grasp the sides of the shield near the backlight cable. Flex the shield away from the Monochrome LCD panel. Ensure that the shield tabs and finger grips clear the LCD panel (Figure 3-91). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 143
CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 144
17. Lift the display ground cable out of the display enclosure (Figure 3-93). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 145
Panel To replace the display ground cable, the display cable, the shield, and the Monochrome LCD panel, follow these steps: CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 146
2. Replace the display cable on the monochrome LCD panel by carefully inserting the end of the display cable into the ZIF connector slide on the LCD panel (Figure 3-95). IMPORTANT: Ensure that the ZIF connector slide is in its fully upward position and that it remains so while you are inserting the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 147
CAUTION Excess flexing and bending of the shield tabs and fingers can damage the shield. 4. Replace the display shield on the Monochrome LCD panel by slightly flexing the display shield tabs and fingers on the Monochrome LCD panel. Ensure that the LIF connector end of the display cable is - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 148
5. Place the shield tabs in the indentations on the right side of the Monochrome LCD panel (Figure 3-97). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 149
6. Align the Monochrome LCD panel, shield, and cable in the display enclosure and replace the screws. Ensure that the ZIF connector end of the display cable and the end of the display ground cable are exposed at the bottom of the display enclosure (Figure 3-98). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 150
7. Connect the display cable and the backlight cable to the inverter board (Section 3.21). 8. Replace the inverter board (Section 3.21). 9. Replace the bezel (Section 3.21). 10. Connect the display ground cable [1] to the LIF clip above the serial port connector (Figure 3-99). 11. Carefully insert - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 151
12. While holding the end of the display cable inside the ZIF connector slide, press down both ends of the slide simultaneously to secure the cable in the ZIF connector (Figure 3-100). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 152
and that the white line on the cable is level. 14. Replace the keyboard assembly (Section 3.7). Chapter 3.23 Color STN (9.5 inch) Display (Models 400 and 410) IMPORTANT: The Monochrome, CSTN and the CTFT displays have different removal and replacement procedures. Be sure to follow the procedures for - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 153
the display cable and the display ground cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. CAUTION The computer becomes top heavy when the keyboard assembly is removed and the display is opened. To - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 154
6. Disconnect the display ground cable [1] from the LIF clip above the serial port connector (Figure 3-102). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 155
top heavy when the keyboard assembly is removed and the display is opened. To prevent damage to the display and the computer, be sure to support the display assembly when it is fully opened at approximately 135-degree angle 10. Open the display to its fully open position of approximately - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 156
135-degrees (Figure 3-103). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 157
12. Carefully remove the CSTN (9.5 inch) panel, display cable, and shield from the display enclosure (Figure 3-105). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 158
CAUTION Excess flexing and bending of the shield tabs and fingers can damage the shield 13. On the right side of display shield, slide the two shield tabs from the face of the CSTN (9.5 inch) panel to the back (Figure 3-106). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 159
14. Lay the CSTN (9.5 inch) panel face down on a clean surface. 15. Slide the display shield off the CSTN (9.5 inch) panel (Figure 3-107). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 160
16. Disconnect the display cable from the connector on the back of the CSTN (9.5 inch) panel (Figure 3-108). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 161
17. Lift the display ground cable out of the display enclosure (Figure 3-109). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 162
Replacing the Display Ground Cable, Display Cable, Shield, and the CSTN (9.5 inch) Panel To replace the display ground cable, the display cable, the shield, and the CSTN (9.5 inch) panel, follow these steps: 1. Position the display ground cable in the display enclosure, aligning the cable with the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 163
2. Connect the display cable to the connector on the back of the CSTN (9.5 inch) panel (Figure 3-111). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 164
3. Slightly lift the tabs on the left side of the display shield and slide the shield onto the CSTN (9.5 inch) panel. Ensure that the LIF connector end of the display cable is exposed on the right side of the CSTN (9.5 inch) panel (Figure 3-112). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 165
4. Place the display shield tabs in the indentations on the sides of the CSTN (9.5 inch) panel (Figure 3-113). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 166
5. Align the CSTN (9.5 inch) panel, display cable, and shield in the display enclosure and replace the screws. Ensure that the ZIF connector end of the display cable and the end of the display ground cable are exposed at the bottom of the display enclosure (Figure 3-114). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 167
6. Connect the display cable and the backlight cable to the inverter board (Section 3.23). 7. Replace the inverter board (Section 3.23). 8. Replace the bezel (Section 3.23). 9. Connect the display ground cable [1] from the LIF clip above the serial port connector (Figure 3-115). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 168
10. Carefully insert the end of the display cable into the ZIF connector slide on the system board. IMPORTANT: Ensure that the ZIF connector slide is in its fully upward position and that it remains so while you are inserting the cable into it. Before closing the slide, ensure that the cable is - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 169
and that the white line on the cable is level. 13. Replace the keyboard assembly (Section 3.7). Chapter 3.24 Color TFT (8.4 inch) Display (Models 400 and 410) IMPORTANT: The Monochrome, CSTN and the CTFT displays have different removal and replacement procedures. Be sure to follow the procedures for - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 170
1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION To prevent damage to the To prevent damage to the display and the computer, be sure to support the display assembly when it is fully opened at approximately 135-degree - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 171
Remove the inverter board (Section 3.21). 6. Remove the display cable and backlight cable from the inverter board (Section 3.21). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 172
8. Carefully rotate the CTFT (8.4 inch) panel down and out of the display enclosure, laying the CTFT (8.4 inch) panel gently on the keyboard assembly (Figure 3-119). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 173
9. Remove the display cable from the connector on the back of the panel by pulling the tabs at the back of the connector (Figure 3-120). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 174
Replacing the CTFT (8.4 inch) Display Panel To replace the CTFT (8.4 inch) panel, follow these steps: 1. Connect the display cable to the connector on the back of the CTFT (8.4 inch) panel (Figure 3-121). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 175
2. Position the CTFT (8.4 inch) panel into the display enclosure, ensuring that the ZIF connector end of the display cable is exposed on the right side of the CTFT (8.4 inch) panel (Figure 3-122). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 176
Cable To remove the CTFT (8.4 inch) display cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION The computer becomes top heavy when the keyboard assembly is removed and the display is opened. To - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 177
The ZIF connector and its attached cable can be damaged easily. Handle only the connector slide when disconnecting the ZIF connector. Never pull or twist the cable itself while it is seated in the ZIF connector 4. Remove the display cable from the system board by pulling up both ends of the ZIF - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 178
it is seated in the ZIF connector. 8. Remove the display cable and backlight cable from the inverter board (Section 3.21). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 179
Shield To remove the CTFT (8.4 inch) display shield, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. CAUTION To prevent damage to the trough, ensure that the trough does not tilt forward into the CPU - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 180
Remove the inverter board (Section 3.21). 5. Remove the display cable and backlight cable from the inverter board (Section 3.21 CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 181
Display Ground Cable To remove the display ground cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION To prevent damage to the trough, ensure that the trough does not tilt forward into the CPU - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 182
5. Remove the display cable and backlight cable from the inverter board (Section 3.21). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 183
and Replacing the Display Bezel To remove the display bezel, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 184
2. Open the computer. 3. Remove the four screws from the display bezel (Figure 3-129). 4. Separate the display bezel from the display assembly (Figure 3-130). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 185
from either side of the display enclosure, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. 3. Remove the display bezel. Refer to "Removing and Replacing the Display Bezel" in this section. 4. Hold the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 186
6. Remove the display latch spring from the latch (Figure 3-132). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 187
Replacing the Display Enclosure Springs and Latches To replace the display springs and latches, follow these steps: 1. Hook the display latch spring on to the display latch [1] and place the display latch spring over the post in the display enclosure [2] (Figure 3-133). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 188
2. Slide the display latch into place on either side of the display enclosure (Figure 3-134). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 189
power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. 3. Remove the display bezel. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 190
posts on the display enclosure (Figure 3-135). WARNING Ensure that the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to disconnect power could result in serious injury or damage to the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 191
Inverter Board for the CTFT (10.4 inch) Display WARNING Ensure that the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to disconnect power could result in serious injury or damage to the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 192
: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. 3. Remove the display bezel. and Replacing the Display Bezel" in this section. CAUTION When servicing the computer, ensure that cables are placed in their proper location - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 193
WARNING Ensure that the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to disconnect power could result in serious injury or damage to the equipment. 5. Unplug - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 194
the power cord is disconnected from the electrical outlet and that the battery pack is removed from the computer before beginning replacement procedures. Failure to discharge, which will damage the LCD panel. CAUTION When servicing the computer, ensure that cables are placed in their proper - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 195
, shield, display cable and the display ground cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION The computer becomes top heavy when the keyboard assembly is removed and the display is opened - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 196
CAUTION The ZIF connector and its attached cable can be damaged easily. Handle only the connector slide when disconnecting the ZIF connector. Never pull or twist the cable itself while it is seated in the ZIF connector 4. Remove the display cable from the system board by pulling up both ends of - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 197
top heavy when the keyboard assembly is removed and the display is opened. To prevent damage to the display and the computer, be sure to support the display assembly when it is fully opened at approximately 135-degree angle 10. Open the display to its fully open position of approximately - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 198
135-degrees (Figure 3-142). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 199
12. Carefully remove the CSTN (10.4 inch) panel, display cable, and shield from the display enclosure (Figure 3-144). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 200
CAUTION Excess flexing and bending of the shield tabs and fingers can damage the shield 13. On the right side of display shield, slide the two shield tabs from the face of the CSTN (10.4 inch) panel to the back (Figure 3-145). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 201
14. Lay the CSTN (10.4 inch) panel face down on a clean surface. 15. Slide the display shield off the CSTN panel (Figure 3-146). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 202
16. Only Sharp panels require the XOVER Board. Remove the ground wire connecting the XOVER Board with the CSTN (10.4 inch) Panel (Figure 3-147). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 203
17. Disconnect the display cable from the connector on the back of the CSTN (10.4 inch) panel (Figure 3-148). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 204
17. Lift the display ground cable out of the display enclosure (Figure 3-149). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 205
Replacing the Display Ground Cable, Display Cable, Shield, and the CSTN (10.4 inch) Panel To replace the display ground cable, display cable, shield, and the CSTN (10.4 inch) panel, follow these steps: - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 206
1. Position the display ground cable in the display enclosure, aligning the cable with the bosses in the display enclosure (Figure 3-151). 2. If the CSTN panel is manufactured by Sharp complete this step. If not, continue to step 4. Connect the display cable to the XOVER Board. Then connect the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 207
3. If the CSTN panel is manufactured by Sharp complete this step. If not, continue to the next step. Peel off the adhesive from the back of the rubber pad found in the spare kit. Place this pad on the display enclosure indicated by the embossed area (Figure 3-152). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 208
4. Slightly lift the tabs on the left side of the display shield and slide the shield onto the CSTN (10.4 inch) panel. Ensure that the LIF connector end of the display cable is exposed on the right side of the CSTN (10.4 inch) panel (Figure 3-153). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 209
5. Place the display shield tabs in the indentations on the sides of the CSTN (10.4 in) panel (Figure 3-154). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 210
6. Align the CSTN (10.4 inch) panel, display cable, and shield in the display enclosure and replace the screws. Ensure that the ZIF connector end of the display cable and the end of the display ground cable are exposed at the bottom of the display enclosure (Figure 3-155). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 211
7. Connect the display cable and the backlight cable to the inverter board (Section 3.25). 8. Replace the inverter board (Section 3.25). 9. Replace the bezel (Section 3.25). 10. Connect the display ground cable [1] from the LIF clip above the serial port connector (Figure 3-156). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 212
11. Carefully insert the end of the display ground cable into the ZIF connector slide on the system board. IMPORTANT: Ensure that the ZIF connector slide is in its fully upward position and that it remains so while you are inserting the cable into it. Before closing the slide, ensure that the cable - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 213
13. Ensure that the cable has been seated evenly and that the white line on the cable is level. 14. Replace the keyboard assembly (Section 3.7). Chapter 3.27 Color TFT (10.4 inch) Display (Models 420 and 430) IMPORTANT: The Monochrome, CSTN and the CTFT displays have different removal and - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 214
: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION To prevent damage to the To prevent damage to the display and the computer, be sure to support the display assembly when it is fully opened at approximately 135-degree - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 215
NOTE: The CTFT (10.4 inch) display is different than all other displays. The inverter board fits partially behind the display. Loosen the screws on the display to slide the inverter out from behind the display. 5. Remove the inverter board (Section 3.25). 6. Remove the display cable and backlight - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 216
8. Carefully rotate the CTFT (10.4 inch) panel down and out of the display enclosure, laying the CTFT (10.4 inch) panel gently on the keyboard assembly (Figure 3-160). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 217
9. Remove the display cable from the connector on the back of the panel (Figure 3-161). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 218
is disconnected by pulling upward on the tabs on the back of the Connector. Replacing the CTFT (10.4 inch) Display Panel CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 219
2. Position the CTFT (10.4 inch) panel into the display enclosure, ensuring that the ZIF connector end of the display cable is exposed on the right side of the CTFT (10.4 inch) panel (Figure 3-163). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 220
To remove the CTFT (10.4 inch) display cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION The computer becomes top heavy when the keyboard assembly is removed and the display is opened. To - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 221
The ZIF connector and its attached cable can be damaged easily. Handle only the connector slide when disconnecting the ZIF connector. Never pull or twist the cable itself while it is seated in the ZIF connector CAUTION To prevent damage to the trough, ensure that the trough does not tilt forward - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 222
it is seated in the ZIF connector. 8. Remove the display cable and backlight cable from the inverter board (Section 3.25). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 223
Shield To remove the CTFT (10.4 inch) display shield, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer. CAUTION To prevent damage to the trough, ensure that the trough does not tilt forward into the CPU - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 224
Remove the inverter board (Section 3.25). 5. Remove the display cable and backlight cable from the inverter board (Section 3.25 CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 225
Display Ground Cable To remove the display ground cable, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Open the computer CAUTION To prevent damage to the trough, ensure that the trough does not tilt forward into the CPU - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 226
5. Remove the display cable and backlight cable from the inverter board (Section 3.25). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable placement can cause severe damage - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 227
Enclosure To replace the display enclosure, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the handle brackets (Section 3.3). 3. Remove the tilt feet (Section 3.4 CAUTION The computer becomes top heavy when the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 228
ground clip located between the clutch and the CPU base. NOTE: The right clutch clip for Models 420 and 430 is different than for Models 400 and 410, and is illustrated in the circular insert (Figure 3-170). 6. Life up both ends of the ZIF connector slide simultaneously [1], carefully opening the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 229
8. Disconnect the display ground cable [1] from the LIF clip (Figure 3-172). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 230
CAUTION To prevent damage to the display assembly while the keyboard assembly is removed from the system unit module, use care when closing the display 9. Gently lower the display. 10. Using a Torx T8 or slotted driver, remove the four clutch screws from the rear panel of the computer (Figure - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 231
11. Lift the display assembly off the system unit module (Figure 3-174). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 232
itself while it is seated in the ZIF connector 16. Remove the display cable and backlight cable from the inverter board (Section 3.21). CAUTION When servicing the computer, ensure that cables are placed in their proper location to avoid pinching during the reassembly process. Improper cable - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 233
placement can cause severe damage to the unit 17. Remove the LCD panel, the display cable, the shield, and the display ground cable from the display enclosure as follows: - If removing a Monochrome panel and shield, refer to Section 3.22. - If removing a CSTN (9.5 in) panel and shield, refer to - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 234
21. Replace the display ground cable, the LCD panel, the shield, and the display cable into the display enclosure as follows: - If replacing a Monochrome panel and shield, refer to Section 3.22. - If removing a CSTN (9.5 in) panel and shield, refer to Section 3.23. - If removing a CTFT (8.4 in) - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 235
27. Align the clutches with the system unit module, ensuring that the display ground cable and the display cable are positioned on top of the system unit module (Figure 3-178). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 236
28. Replace the four rear clutch screws (Figure 3-179). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 237
29. Open the display to a 90-degree angle (Figure 3-180). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 238
30. Connect the display ground cable [1] to the LIF clip above the serial port connector between the system board and the system chassis (Figure 3-181). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 239
31. Carefully insert the end of the cable into the ZIF connector slide on the system unit. IMPORTANT: Ensure that the ZIF connector slide is in its fully upward position and that it remains so while you are inserting the cable into it. Before closing the slide, ensure that the cable is fully seated - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 240
33. Ensure that the cable has been seated evenly and that the white line on the cable is level. 34. Replace the right clutch ground clip located between the clutch and the CPU base. The right clutch clip for Models 420 and 430 is different and is illustrated in the insert Figure 3-183). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 241
Clips To remove the left and right clutch ground clips, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the keyboard assembly (Section 3.7). 3. Remove the left clutch ground clip from the system chassis (Figure 3-184). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 242
4. Remove the right clutch ground clip located between the clutch and the CPU base. The right clutch clip for Models 420 and 430 is different and is illustrated in the insert (Figure 3-185). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 243
and Replacing the Clutches To remove the clutches, follow these steps: 1. Disconnect all power from the computer and remove the AC Adapter and battery pack (Section 3.2). 2. Remove the handle brackets from each side of the computer (Section 3.3). 3. Remove the tilt feet from each side of the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 244
5. Remove the left and right clutch ground clips (see "Removing and Replacing Clutch Ground Clips" in this section). 6. Pull up both ends of the ZIF connector slide simultaneously [1], carefully opening the slide [2] (Figure 3-186). 7. Lift the display cable out of the connector slide [3], being - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 245
9. Using a Torx T8 or slotted driver, remove the four clutch screws on the rear of the system unit module (Figure 3-188). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 246
10. Lift the display assembly off the system unit module (Figure 3-189). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 247
11. Place the display assembly top-side up. 12. Remove the display bezel (Section 3.21). 13. Remove the screws from the clutches on either side of the display enclosure. 14. On either side of the display enclosure, slide the clutches from underneath the display shield tabs (Figure 3-190). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 248
15. Slide the clutches out of the display enclosure. 16. To replace the clutches, reverse the previous steps. IMPORTANT: When replacing the display clutch screws, ensure proper alignment of the display clutches on either side of the display enclosure with the shield (Figure 3-191). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 249
3.30 Docking Base This section contains removal procedures for the following docking base components: o Battery Door o Feet o Handle Removing the Battery Door To remove the battery door, follow these steps: 1. Open the battery door until it is perpendicular to the docking base (Figure 3-192). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 250
2. Hold the door upright, applying pressure to the door at the base of the front hinge [1]. This creates a pivot point [2] to rotate the door out of the base (Figure 3-193). 3. Flex the front end of the door until the retaining pin [3] clears the hinge slot on the docking base (Figure 3-193). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 251
4. Remove the battery door from the docking base (Figure 3-194). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 252
5. To replace the battery door, reverse the previous steps. Replacing the Docking Base Feet To replace the docking base feet, follow these steps: 1. Remove the top layer from the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 253
Replacing the Handle To replace the docking base handle, follow these steps: 1. Using a Torx T8, remove the screw from the rear of the handle (Figure 3-196). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 254
2. Slide the handle off the crankshaft (Figure 3-197). - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 255
the crankshaft, replace the screw behind the handle. Chapter 3.31 Monitor Support Cover This section contains replacement procedures for the foot on the monitor support cover. To replace the foot, follow these steps: 1. Turn the monitor support cover top-side down. 2. Remove the top layer from the - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 256
- Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 257
to the computer, the problem may be with the external device or its cable. Verify this by running POST with and without the external device connected. Chapter 4.1 Preliminary Steps IMPORTANT: Use AC power when running POST, Computer Setup, and Computer Checkup. A low battery condition could initiate - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 258
that the hard drive is installed in the computer. 8. Connect the computer to an external AC power source with the battery pack inserted. battery as referenced in the following removal procedures: - Section 3.9, "Real-Time Clock Battery for Models 400 and 410" - Section 3.10, "Real-Time Clock Battery - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 259
removal procedures. - Section 3.15, "System Board for Models 400, 410, 420 and 430" 13. Run Computer Setup to POST) The Power-On Self-Test (POST) is a series of diagnostic tests that run automatically when the system is actual test) o Hard drive o Diskette drive o System memory Running POST To run - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 260
refer to the troubleshooting tables in Section drive. If the hard drive is nonfunctional, you can run it from a diskette. NOTE: It is recommended that you make diskette copies of Computer Checkup and keep them available for future need. A current copy can be obtained from the Compaq Customer Support - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 261
Computer Checkup does not detect all non-Compaq devices. 6. Verify that Computer Checkup correctly or file a log of errors. 8. Follow the instructions on the screen as the diagnostic tests are run on the recommended actions in given order until the problem is solved and no error messages occur. - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 262
. For removal and replacement procedures, refer to Chapter 3. IMPORTANT: Rerun Computer Checkup each time you complete a recommended action step. If the problem is resolved when POST and Computer Checkup are rerun (i.e., with no error codes), do not perform the remaining recommended action steps - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 263
when problems are diskette cable. Error drive type 3. Check diskette drive. 162 - System 2 Short Configuration Run Computer Setup. Options Not incorrect Set 163 - Time & 2 Short Invalid time or Run Computer Setup. Date Not Set date in configuration memory 164 - Memory - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 264
and system board. 3. Replace the memory expansion board (if applicable). 4. Make sure the memory PC card is installed correctly by running PC card service and Computer Setup. 5. Replace the memory PC card. 6. Replace the system board. 203 - Memory None RAM failure See Message 201 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 265
is seated. Error circuitry 2. Replace the diskette drive cable. 3. Replace the diskette drive. 4. Replace the system board. 602 - Diskette None Diskette in drive 1. Replace the diskette. Boot A not bootable 2. Replace the diskette drive. 3. Replace the system board. Message - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 266
drive. 1790- Disk 0 None Hard drive error 1. Run Computer Setup and Failure or wrong drive Computer Checkup. type 2. Change drive type. 3. Replace the drive = Test or action that failed. XX = Specific problem. Table 5-2. Processor Computer Checkup Error Codes Error Code - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 267
test The following steps apply to failed 201 - xx through 202 - xx error codes: 202 - xx Memory system ROM 1. Run Computer Setup. checksum failed 2. Replace the system board. 203 - xx Memory write/read test The following steps apply to failed 203 - xx through 210 - xx error codes: - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 268
. 206 - xx Increment pattern test failed If you have a memory expansion board: 210 - xx Random pattern test 1. Remove the memory expansion failed board and reinstall a new board. 2. Replace the memory expansion board. Table 5-4. Keyboard Computer Checkup Error Codes Error Code - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 269
through 698 - xx error codes: 601 - xx Diskette format failed 1. Replace the diskette. 2. Check and/or replace the 602 - xx Diskette read test diskette cable. failed 3. Replace the diskette drive. 4. Replace the system board. 603 - xx Diskette write, read, compare test failed 604 - xx - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 270
1700 - xx through 1799 - xx error codes: 1701 - xx Hard drive format 1. Run Computer Setup and test failed verify drive type. 2. Reset the hard drive. 1702 - xx Hard drive read test 3. Try another hard drive. If failed first drive was defective, try to recover data. 1703 - xx Hard - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 271
power mode test failed 1799 - xx Invalid hard drive type failed * Error Correction Code Table 5-10. Graphics Computer Checkup Error Codes Error Code Description Recommended Action 2402 - xx Video memory test The following step applies to failed 2402 - xx through 2480 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 272
2419 - xx ECG/VGC ROM checksum test failed 2421 - xx ECG/VGC 640 x 200 graphics mode test failed Error Code Description Recommended Action 2422 - xx ECG/VGC 640 x 350 16 The following step applies to color set test failed 2402 - xx through 2480 - xx error codes: 2423 - xx ECG - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 273
Troubleshooting without Error Messages This section contains troubleshooting information that provides a quick reference for diagnosing problems When Troubleshooting When troubleshooting a problem, check Table 5-12. Solving Power Problems Problem Probable Cause Solution(s) Computer will - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 274
, or initiate Standby by pressing the power button once to reduce power consumption until the battery pack can be recharged or another power source can be connected. Problem Probable Cause Solution(s) Computer turned off System initiated Install a fully charged while left unattended - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 275
battery contacts. Ensure battery. that the battery is making good contact with all 4 contacts. Replace the system board. Defective system Replace the system board. board. Problem be checked by the user. a. PC card b. Battery pack c. Hard drive d. Diskette drive e. Internal AC power - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 276
. does not go into standby. Defective system Replace the system board. board. Table 5-15. Solving Battery Problems Problem Probable Cause Solution(s) Battery indicator Low battery beeps Use Power Management to flashes to indicate low were turned off. turn on the low - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 277
or PCMCIA card is external device when not draining the using it. battery. Defective battery. Condition the battery. Install another battery. If this fixes the problem, original battery is defective. Replace the battery. Battery pack is warm to Normal warming has No action is required - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 278
temperature range is 50oF to 104oF (10oC to 40oC). Table 5-16. Solving Battery Gauge Problems Problem Probable Cause Solution(s) Battery gauge appears Battery pack has been Charge the battery pack * inaccurate. partially recharged (Appendix B). too many times or NOTE: The - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 279
lack of user activity. Brightness and Press the Fn + F9 keys to contrast needs adjust flashing. Problem Probable Cause Solution(s) Screen is blank, the Power/standby indicator is flashing, and the battery indicator is flashing. System has entered a low battery Standby condition - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 280
to resolution. ** connected to external internal display, monitor. which only supports 640 x 480 resolution. ** When using an external monitor and on the external monitor may not fill the screen. Problem Probable Cause Solution(s) Computer display and External monitor was - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 281
on the internal display, the image on the external monitor may not fill the screen. **** Blocks usually appear in an even fraction of the display (1/2, 1/4/, 1/6, 1/8, etc.) Problem Probable Cause Solution(s) Backlight Power conservation Verify that you are not in (brightness) cannot - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 282
small Defective display Replace the display panel. group of lines, or panel block are out is beyond Compaq specifications, replace the Blocks usually appear in an even fraction of the display (1/2, 1/4, 1/6, 1/8, etc.). Table 5-18. Solving Diskette/Diskette Drive Problems Problem - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 283
not Format the diskette. formatted. Table 5-19. Solving Hard Drive Problems Problem Probable Cause Solution(s) Reading hard drive System entered Give the system time to takes an unusually Hibernation due to restore the previously long time after low battery condition saved - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 284
on, in Standby, or in make sure computer is off, Hibernation. unplugged, and the battery pack is removed. Table 5-20. Solving External Device Installation Problems Problem Probable Cause Solution(s) A new device is not Computer Setup has Run Computer Setup. recognized as part - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 285
the memory error occurs during is not set up using MS-DOS MEMMAKER. operation. correctly. System ran out of 1. Check the application memory for the documentation for memory application. requirements. 2.Increase memory. Table 5-24. Solving PC Card Problems Problem Probable - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 286
to enable the PC Card slot. Contact Compaq Reseller Support for a list of PC Cards tested successfully in Compaq PC Card platforms. The PC Card drivers The PC Card slot is From MS-DOS: Select (Socket Services, disabled. Security Management from Card Services, Card the Configuration - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 287
option; then view the Online help for detailed instructions on setting up network PC Cards. Storage PC Card does SRAM and flash Select Computer Setup from not work. memory cards require the Compaq Control Center; the memory card then select the PC Card driver to be loaded. option to - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 288
select MEMCARD or ATACARD from the PC Card option. The card is not Contact Compaq Reseller supported. Support for a list of PC Cards tested successfully in Compaq PC Card platforms. Table 5-25. Solving Printer Problems * Problem Probable Cause Solution(s) Printer does - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 289
additional memory. Table 5-27. Solving Sound Problems Problem Probable Cause Solution(s) Computer does not Beeps have been Press the Fn+F5 keys to beep after the turned off. turn the speaker on. Power-On Self-Test (POST). Chapter 5.4 Contacting Compaq Support Obtain - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 290
from the computer. IMPORTANT: Ensure that there is no diskette in the diskette drive and that there are no PC Cards in the PC Card slot. 4. Close the display and all exterior doors (external options, PC Card compartment, memory, and hard drive). 5. Pack the computer system with sufficient packing - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 291
following: o Monochrome STN display o Color STN and TFT displays o Hard drives o Diskette drive o NiMH battery pack o AC Adapter o Docking Base Chapter 6.1 Computer Table 6-1. Computers Models 400 and 410 English Metric Dimensions Online Monochrome (9.5 inch): Height 1.8 in 4.57 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 292
) Color STN (10.4 inch): Height 2.20 in 5.49 cm Width 11.90 in 30.29 cm Depth 8.90 in 22.83 cm Weight (w/o battery) 5.9 lbs 2.67 kg Weight (with battery) 6.25 lbs 2.83 kg Color TFT (10.4 inch): Height 2.20 in 5.49 cm Width 11.90 in 30.29 cm Depth 8.90 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 293
1 hour duration Nonoperating 1.00 g, 5-500 Hz 1/2 octave/min sweep, 1 hour duration Chapter 6.2 Displays Table 6-3. Monochrome (9.5 inch) Display Models 400 and 410 English Metric Dimensions (display size): Height 5.7 in 14.4 cm Width 7.6 in 19.2 cm Mounting Internal - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 294
Vdc, +18 Vdc Output Voltage 500 Vac Maximum Input Power 3.5 W Maximum Output Power 2.5 W Table 6-5. Color TFT (8.4 inch) Display Models 400 and 410 English Metric Dimensions (Display Size): Height 5.1 in 12.9 cm Width 6.7 in 17.1 cm Mounting Internal Number of - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 295
Pixel Size: Pitch 0.27 x 0.27 mm Format 640 x 480 Configuration RGB Stripe Backlight CCFT-Edgelit at Top Character Display 80 x 25 Total Power Consumption 4W Frequency: Horizontal 31.2 kHz (CRT mode) 32 kHz (LCD mode) Vertical 60 Hz (VGA) 70 Hz (CGA) - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 296
+5 Vdc, +18 Vdc Output Voltage 500 Vac Maximum Input Power 3.5 W Maximum Output Power 2.5 W Chapter 6.3 Hard Drives Table 6-8a. Hard Drives Model 170 MB 250 MB 350 MB Formatted Capacity Per Drive (MB): Physical 170.9 256.0 351.9 Logical 170.0 256.0 351.9 - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 297
Size (KB) 96 96 64 Table 6-8b. Hard Drives Model 420 MB 540 MB 720 MB Formatted Capacity Per Drive (MB): Physical 421.1 541.9 722.5 Logical 421.1 541.9 722.5 Drive Type 65 (soft) 65 (soft) 65 (soft) Drive Height: With drive frame 12.7 mm 12.7 mm 12.7 mm - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 298
16 Sectors/Track 63 63 63 Bytes/Sector 512 512 512 Buffer Size (KB) 64 64 64 Chapter 6.4 Diskette Drive Table 6-9. Diskette Drive (All Models) Diskettes: Size 3.5 in (8.8 cm) High Density (MB) 1.44 Low Density (KB) 720 LED Indicator Green Height One-third - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 299
life is based on an estimated typical use pattern of an average user and will vary based on the configuration of the computer and the usage pattern of the individual user. To maximize battery life, Compaq recommends that power conservation be set to high. Chapter 6.6 AC Adapter Table - Compaq Contura 400 | Compaq Contura 400 Family of Personal Computers Maintenance - Page 300
kV for 50 nx Minimum Charge Time 1.0 hr 1.0 hr Chapter 6.7 Docking Base Table 6-12. Docking Base (All Models) Without Monitor With Monitor Support Cover Support Cover Dimensions: Height 2.75 in (7 cm) 3.875 in (10 cm) Width 15.75 in (30 cm) 17.5 in (34 cm) Depth 11
Notice
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Copyright 1994, 1995 Compaq Computer Corporation.
All rights reserved. Printed in the U.S.A.
Compaq, Deskpro, LTE, Contura, Presario, ProLinea
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MAINTENANCE AND SERVICE GUIDE
COMPAQ CONTURA 400 FAMILY OF PERSONAL COMPUTERS
Second Edition (June 1995)
First Edition (September 1994)
Part Number 147951-002