Compaq Concerto Maintenance And Service Manual
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Compaq Concerto Maintenance And Service Manual

Compaq Concerto Maintenance And Service Manual

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Compaq Concerto Maintenance And Service Manual

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  • Page 1 Thank you for purchasing this Factory Service Manual CD/DVD from servicemanuals4u.com. Please check out our eBay auctions for more great deals on Factory Service Manuals: servicemanuals4u...
  • Page 2 NOTICE The information in this guide is subject to change without notice. Compaq Computer Corporation shall not be liable for technical or editorial errors or omissions contained herein; nor for incidental or consequential damages resulting from the furnishing, performance, or use of this material.
  • Page 3 PREFACE This Maintenance and Service Guide is a troubleshooting guide that can be used for reference when servicing the Compaq Concerto Personal Computer. Additional information is available in the Technical Reference Guide. Compaq Computer Corporation reserves the right to make changes to the Compaq Concerto Personal Computer without notice.
  • Page 4 ONLINE USER'S GUIDE o BEYOND SETUP o TECHNICAL REFERENCE GUIDE o MAINTENANCE AND SERVICE GUIDE - OPTIONS AND PERIPHERALS o COMPAQ SERVICE QUICK REFERENCE GUIDE o Service Training Guides o Compaq Service Advisories and Bulletins...
  • Page 5 Chapter 1 - Illustrated Parts Catalog INTRODUCTION This chapter provides illustrated parts breakdowns and identifies the spare parts for the standard features of the Compaq Concerto Family of Personal Computers, the FlexConnect, and accessories. Chapter 1.1 ILLUSTRATED PARTS BREAKDOWN: COMPAQ CONCERTO...
  • Page 6 o Speaker gasket The display panel and digitizer are secured together with double-sided adhesive. A spacer installed in the cavity on the back of the display creates a flat registration surface between the digitizer and display panel. The digitizer is aligned with the display panel by locating pins on the display panel, which engage holes in the digitizer.
  • Page 7 The ejector rails slide into the PCMCIA connector and are secured to the chassis with two screws. The rear cover provides the remaining half of the housing assembly. It houses the main battery and features a sliding door to protect the I/O panel. Compaq Concerto Personal Computer Cover Components...
  • Page 8 Table 1-1. Compaq Concerto Personal Computer Cover Components =========================================================================== Description Spare Part Notes Number =========================================================================== 1. CPU Cover Kit 144849-001 Includes: a. CPU cover assembly b. Pen park --------------------------------------------------------------------------- 2. Pen Park 144951-001 --------------------------------------------------------------------------- 3. Hinge/Actuator 144954-001 Includes: a. 2 standby switch actuators b.
  • Page 9 2 PCMCIA hard drive bezels b. 2 PCMCIA doors c. 2 diskette drive bezels d. 2 I/O doors --------------------------------------------------------------------------- * Part Number 144850-001 has been replaced by 144850-002 (Concerto 4/25) and 144850-003 (Concerto 4/33). =========================================================================== Display Module Components Table 1-2. Display Module Components...
  • Page 10 6. Display Inverter 144812-001 Board Shield 7. Display Inverter 144798-001 Includes inverter board Board insulator =========================================================================== System Module Components Table 1-3. System Module Components =========================================================================== Description Spare Part Notes Number =========================================================================== 1. Chassis Not available separately 2. Auxiliary Battery 144952-001 3.
  • Page 11 6. 3 1/2-Inch, 144851-001 1.44 Megabyte Diskette Drive 7. PCMCIA Ejector 196454-001 Includes Rail Kit a. 2 top rails b. 2 bottom rails c. 4 PCMCIA spacers 8. ZIF Slider Kit * 144953-001 Includes 10 ZIF connector sliders for each ZIF connector.
  • Page 12 Table 1-5. AC Adapter =========================================================================== Description Spare Part Number =========================================================================== AC Adapter 144834-001 =========================================================================== Keyboard...
  • Page 13 Table 1-6. Keyboards =========================================================================== Description Spare Part Number =========================================================================== 1. U.S. English 144809-001 2. U.K. English 144809-003 * 3. German 144809-004 * 4. French 144809-005 * 5. Italian 144809-006 * 6. Spanish 144809-007 * 7. Danish 144809-008 * 8. Norwegian 144809-009 * 9.
  • Page 14 3. 16-Megabyte, 32-Bit Memory Expansion Board 144861-001 =========================================================================== Fastcharger Table 1-8. Fastcharger =========================================================================== Description Spare Part Notes Number =========================================================================== 1. Fastcharger 144816-001 2. Fastcharger Doors Kit 144959-001 Includes: a. 2 doors b. 4 anti-skid pads =========================================================================== Pen Components...
  • Page 15 MAINTENANCE AND SERVICE GUIDE 196453-001 COMPAQ SERVICE QUICK REFERENCE GUIDE 106854-001 BEYOND SETUP GUIDE 196452-001 ONLINE USER'S GUIDE * 144957-001 --------------------------------------------------------------------------- * Includes Compaq Dictionary (preinstalled on hard drive). =========================================================================== Table 1-11. Accessories =========================================================================== Description Spare Part Number =========================================================================== Auto Adapter 144835-001 *...
  • Page 16 121467-002 * CD-ROM Signal Cable (4 ft) 144916-001 * Mouse, 2-Button 141189-201 * External Trackball 142961-001 * Microsoft Windows for Pen Computing 198818-001 Compaq Concerto ROMPaq Diskette 198819-001 Pen/Mouse Driver 198820-001 PCMCIA Support Software 198821-001 --------------------------------------------------------------------------- * Optional Accessory =========================================================================== Table 1-12.
  • Page 17 Where Used: Diskette drive to chassis Part Number: 144863-004 Drive: T8/SL Quantity: --------------------------------------------------------------------------- Description: M2.5 X 4.0 Type: Truss Where Used: CPU I/O to chassis Part Number: 144864-001 Drive: T8/SL Quantity: --------------------------------------------------------------------------- Description: M2.5 X 4.0 Type: Truss Where Used: Inverter to chassis Part Number: 144864-001...
  • Page 18 Chapter 1.2 ILLUSTRATED PARTS BREAKDOWN: FLEXCONNECT The FlexConnect (Figure 1-11) provides a convenient interface to peripherals for the Compaq Concerto Family of Personal Computers. front module provides a secure mounting surface for the computer as well as the electronic connection to the interface. The rear module has provisions for connecting peripherals and houses the interface board.
  • Page 19 the connection of the computer to the interface board housed in the rear module. You must remove the cover from the front module to service the flex cable assembly and computer eject levers (Figure 1-12). The computer eject levers push the computer out of the FlexConnect. The connector on the flex cable is mounted to the base of the front module.
  • Page 20 Table 1-14. FlexConnect Front Module Components =========================================================================== Description Spare Part Notes Number =========================================================================== 1. Front Cover Kit 196473-001 Includes cover and mounting hardware 2. Flex Cable 144929-001 3. Computer Eject Lever 144960-001 Includes: a. 2 LH lever b. 2 RH lever 4.
  • Page 21 Table 1-15. FlexConnect Rear Module Components =========================================================================== Description Spare Part Notes Number =========================================================================== 1. Rear Cover Kit 196475-001 Includes cover and mounting hardware 2. Power Switch 144964-001 3. Interface Board Kit Choose 144817-001, 144819-001, or 144820-001 (See Table 1-15 for details) 4.
  • Page 22 Table 1-16. FlexConnect Interface Boards =========================================================================== Description Spare Part Notes Number =========================================================================== 1. Pass-Through Board * 144817-001 Includes PCA, bezel, power switch actuator, sheet metal pan, mounting hardware 2. Token Ring and SCSI 144819-001 Includes PCA, bezel, power switch Board * actuator, sheet metal pan, mounting hardware 3.
  • Page 23 Table 1-17. FlexConnect AUI AC Adapter =========================================================================== Description Spare Part Notes Number =========================================================================== 1. AUI AC Adapter 142534-001 2. SCSI Extension Cable * 146953-001 CD-ROM Signal Cable; Length: 4ft --------------------------------------------------------------------------- * Not shown =========================================================================== Table 1-18. FlexConnect Mounting Hardware =========================================================================== Description Spare Part Notes...
  • Page 24 --------------------------------------------------------------------------- Description: M2.6 X 2.41 Type: Where Used: Mouse and Keyboard connector Part Number: 121188-001 Drive: T8/SL Quantity: --------------------------------------------------------------------------- Description: M2.5 X .45 Type: Where Used: PCA to basepan Part Number: 139576-002 Drive: Quantity: --------------------------------------------------------------------------- Description: M2.5 X .45 X 6 Type: Truss Where Used:...
  • Page 25 Part Number: 144865-002 Drive: T8/SL Quantity: --------------------------------------------------------------------------- Description: M2.5 X .45 X 12 Type: Truss Where Used: Rear feet Part Number: 144865-004 Drive: T8/SL Quantity: --------------------------------------------------------------------------- Description: M2.5 X .45 X 12 Type: Truss Where Used: Rear cover to rear base Part Number: 144865-004 Drive:...

  • Page 26: Chapter 2.1 Electrostatic Discharge Information

    Chapter 2 - Service Preliminaries INTRODUCTION This chapter provides general service information for the computer and FlexConnect. Adherence to the procedures and precautions described in this chapter is essential for proper service. Chapter 2.1 ELECTROSTATIC DISCHARGE INFORMATION A sudden discharge of static electricity from a finger or other conductor can destroy static-sensitive devices or micro circuitry.
  • Page 27 packaging and grounding precautions are necessary to prevent damage: o To avoid hand contact, transport products in static-safe containers such as tubes, bags, or boxes. o Protect all electrostatic parts and assemblies with conductive or approved containers or packaging. o Keep electrostatic sensitive parts in their containers until they arrive at static-free stations.
  • Page 28 Metallized laminate 15,000 =========================================================================== Grounding Workstations To prevent static damage at the workstation, use the following precautions: o Cover the workstation with approved static-dissipative material. Provide a wrist strap connected to the work surface and properly grounded tools and equipment. o Use static-dissipative mats, heel straps, or air ionizers to give added protection.

  • Page 29: Chapter 2.2 Service Considerations

    o Antistatic tape o Antistatic smocks, aprons, or sleeve protectors o Conductive bins and other assembly or soldering aids o Conductive foam o Conductive table-top workstations with ground cord of 1 megohm 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...
  • Page 30 Compaq strongly recommends that all screws removed during disassembly be kept with the part that was removed, then returned to their proper locations. IMPORTANT: As each subassembly is removed from the computer, it should be placed away from the work area to prevent damage.
  • Page 31 NOTE: The digitizer cable is connected to the back side of the system board and is hidden from view during disassembly. Plastics The plastics can be damaged by the use of excessive force during disassembly and reassembly. When handling the plastic cases and housing assemblies, use care.
  • Page 32 "battery mailer" envelope preaddressed to the reclamation facility. Place the Compaq rechargeable battery pack into the battery mailer and mail it to the Compaq address shown on the mailer. Do not return Compaq rechargeable battery packs to Authorized...
  • Page 33 Chapter 3 - Removal and Replacement Procedures INTRODUCTION This chapter provides subassembly/module level removal and replacement procedures for the computer. After completing all necessary removal and replacement procedures, run the diagnostics program to verify that all components operate properly. Chapter 3.1 DISASSEMBLY/ASSEMBLY SEQUENCE Only the preparation procedures and removal of the system board require a specific disassembly/assembly sequence.
  • Page 34 1. Remove the battery pack. 2. Remove the covers. 3. Disconnect the auxiliary battery. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Always disconnect the auxiliary battery after removing the back cover to prevent damage to the electronics. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< You can now proceed in any sequence to service any of the internal components.
  • Page 35 o Auxiliary battery Leave the computer resting in the front cover while performing service on the system module. Servicing the Display Module Components After preparing the computer for service and removing the front cover, you can service the display module components. All display module components can be serviced in any sequence.
  • Page 36 Chapter 3.3 COMPUTER PREPARATION Before beginning the removal and replacement procedures, follow these steps to prepare the computer for service: 1. Remove the computer from the FlexConnect, if applicable (Section 3.2). If the computer is not installed in a FlexConnect, go to step 2. 2.
  • Page 37 4. Follow these steps to separate the keyboard from the computer: a. Open the keyboard foot by pulling it up from the bottom (Figure 3-3). b. Remove the keyboard cable from the tray (Figure 3-4). c. Release the keyboard by sliding the two latches toward the center of the keyboard (Figure 3-4).
  • Page 38 d. Pivot the keyboard on its hinges to a position that is perpendicular to the display (Figure 3-5). e. While maintaining the perpendicular orientation, slide the keyboard toward the top of the display and pull it away from the computer (Figure 3-5).
  • Page 39 5. Follow these steps to remove the battery pack from the computer: a. Place the computer, display side down, on a smooth surface. b. Slide the battery release latch away from the battery pack (Figure 3-7). The ejector spring located under the battery pack will push the battery pack up for removal.

  • Page 40: Chapter 3.4 Removing And Replacing The Covers

    >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Metal objects can damage the battery pack and the connectors in the battery compartment. To prevent damage, do not let metal objects touch any of the connectors. Do not place any objects other than the battery pack or battery replica in the battery compartment.
  • Page 41 a. Remove the screw from the PCMCIA hard drive bezel (Figure 3-8). b. Open the PCMCIA door and remove the screw located behind the door (Figure 3-9). c. Open the I/O door and remove the screw adjacent to the keyboard connector (Figure 3-10).
  • Page 42 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< This is a size 4-40 screw and is a different size than all the other rear cover screws. Take the necessary precautions to ensure that the proper screw is installed at reassembly. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< d. Remove the remaining seven screws around the periphery of the cover (Figure 3-11).
  • Page 43 4. Lift the back cover off the computer (Figure 3-12). 5. Disconnect the auxiliary battery from the system board (Figure 3-13).
  • Page 44 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< To prevent damage to electronic components, always disconnect the auxiliary battery after removing the back cover. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 6. The display-chassis-system subassembly can now be separated from the front cover (Figure 3-14). However, it is recommended that you use the front cover to support the assembly when servicing the system components.
  • Page 45 7. Reverse steps 3 through 6 to replace the covers. NOTE: There are two locating pins on the inside of the front cover for proper alignment of the display-chassis-system subassembly. Make certain that these locating pins are seated in the holes provided in the chassis (Figure 3-14).
  • Page 46 3. Use the same technique described in step 2 to install a new pen park. Keyboard Hinges The keyboard hinges are not designed to be removed. However, if a keyboard hinge should break, a replacement hinge can be installed without removing the CPU cover.
  • Page 47 Standby Switch Actuator The standby switch actuator is snap fit and is held in place by two tabs on the back side of the actuator that engage the CPU cover. To remove and install a switch actuator, follow these steps: 1.
  • Page 48 5. To install a standby switch actuator, follow these steps: a. Install the actuator spring (Figure 3-18). b. Beginning at the top of the opening in the cover for the switch actuator, slide the switch actuator into position and then snap it into place (Figure 3-18).
  • Page 49 Chapter 3.6 REMOVING REAR COVER COMPONENTS The serviceable components on the rear cover are: o Feet o I/O door o PCMCIA door o PCMCIA hard drive bezel o Diskette drive bezel o Battery latch o Battery eject spring o Foot latch Feet The feet are located at the bottom of the rear cover and are held in place by a snap fit.
  • Page 50 The door is made of a flexible plastic which rides in tracks provided in the rear cover. To remove the I/O door, follow these steps: 1. Slide the door to the center of its travel to disengage the retaining hooks that secure the door in a closed position (Figure 3-20). 2.
  • Page 51 4. To install the PCMCIA door, engage one end on its pivot post and snap the other end into place (Figure 3-22). Replace the screw in the door if applicable. PCMCIA Hard Drive Bezel NOTE: The PCMCIA hard drive bezel serves to secure PCMCIA hard drives or other PCMCIA cards without external connections into place.
  • Page 52 The PCMCIA hard drive bezel snaps into place from the outside of the PCMCIA door. To remove and replace the bezel, complete the following steps: 1. Remove the computer from the FlexConnect, if applicable (Section 3.2). If the computer is not mounted on a FlexConnect, proceed directly to step 2.
  • Page 53 Diskette Drive Bezel The diskette drive bezel snaps into place from the inside of the back cover. Therefore, the back cover must be removed for this procedure. remove and replace the bezel, complete the following steps: 1. Remove the computer from the FlexConnect, if applicable (Section 3.2). If the computer is not installed in a FlexConnect, go to step 2.
  • Page 54 5. Install a diskette drive bezel by sliding it down into place, engaging its mounting tracks, and applying pressure toward the outside of the cover to snap it into place (Figure 3-26). 6. Replace the back cover. Battery Latch...
  • Page 55 The back cover must be removed to allow removal of the battery latch. remove and replace the battery latch, complete the following steps: 1. Remove the computer from the FlexConnect, if applicable (Section 3.2). If the computer is not installed in a FlexConnect, go to step 2. 2.
  • Page 56 6. To install the latch and spring, position the spring in its seat and snap the latch into place (Figure 3-28). Battery Eject Spring The rear cover must be removed to remove and install the battery eject spring. To remove and replace the battery eject spring, complete the following steps: 1.
  • Page 57 5. Turn the back cover over and slide the eject spring out (Figure 3-30). 6. Reverse steps 4 and 5 to install a new spring, making certain the hole in the spring is seated over the boss on the inside of the cover. 7.
  • Page 58 The back cover must be removed to allow removal of the foot latch. remove and replace the foot latch, complete the following steps: 1. Remove the computer from the FlexConnect, if applicable (Section 3.2). If the computer is not installed in a FlexConnect, go to step 2. 2.
  • Page 59 Chapter 3.7 REMOVING THE DISPLAY MODULE COMPONENTS The following components are located in the display module: o Display/Digitizer assembly o Inverter board o LED/Speaker cable These components are mounted independent of each other and can be removed or replaced in any sequence. Removing the Display/Digitizer The display/digitizer consists of the display panel, display spacer, digitizer panel, and display shield.
  • Page 60 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< To prevent damage to electronic components, always disconnect the auxiliary battery after removing the back cover. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 4. Place the display-chassis-system subassembly, display side up, in the back cover of the computer. This will protect the system module components during service.
  • Page 61 7. Carefully lift the display assembly (digitizer/spacer/display), with display shield attached, away from the chassis and disconnect the digitizer cable ZIF connector (accessible through a cutout in the chassis) from the system board (Figure 3-35). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Take care not to disturb the hard drive shield that is taped to the display side of the chassis.
  • Page 62 8. Separate the display assembly from the display shield, allowing the digitizer cable to pass through the cutout provided in the shield (Figure 3-36). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Use extreme caution when handling the digitizer cable. Avoid contacting the display shield with the cable. If the silver signal traces on the cable are scratched or damaged, the digitizer will not function.
  • Page 63 9. You can replace the display, spacer, and digitizer as a unit or replace the digitizer only. To replace the display, spacer, and digitizer as a unit, reverse the procedure in steps 1 through 7 above. To replace the digitizer only, complete the following procedure. Separating the Digitizer from the Display Panel The digitizer is attached to the display with double-sided adhesive tape.
  • Page 64 Installing the Digitizer Two strips of double-adhesive tape are installed on the digitizer. There is a hole and a slot on the digitizer that mate with pins on the rear of the display for alignment. To install the digitizer onto the display panel, complete the following steps: 1.
  • Page 65 4. Place the display/digitizer assembly in the display shield, routing the digitizer cable through the cutout provided in the shield (Figure 3-39). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< Use extreme caution when handling the digitizer cable. Avoid contacting the display shield with the cable. If the silver signal traces on the cable are scratched or damaged, the digitizer will not function.
  • Page 66 Installing the Display/Digitizer To install the display assembly into the computer, complete the following steps: 1. Position the chassis, system side down, on a flat, clean surface. 2. Position the display assembly (display/spacer/digitizer/shield) with the display side away from the chassis and the bottom edge of the display assembly touching the bottom edge of the chassis (Figure 3-40).
  • Page 67 scratched or damaged, the digitizer will not function. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 4. Rotate the display/digitizer unit into position on the chassis and install the five T-8 slotted Torx screws. 5. Install the ferrite bead on the display cable and connect the display cable to the system board (Figure 3-41).
  • Page 68 2. Complete the steps included in Section 3.3. 3. Remove the covers (Section 3.4). 4. Place the display-chassis-system subassembly, display side up, on a clean work surface. 5. Remove the Torx T-8 slotted screw from the inverter shield (Figure 3-42) and remove the shield by lifting it at the end where the screw was installed.
  • Page 69 8. The inverter board connects directly to the system board with a connector on the back side of the board which accesses the system board through a cutout in the chassis. You will feel the resistance from this connector as you remove the inverter board. Remove the inverter board. NOTE: The inverter insulator has an adhesive backing that holds it to the chassis.
  • Page 70 6. Remove the two nylon snap fasteners that secure the speaker cable to the chassis (Figure 3-45). 7. Disconnect the LED/Switch Cable from its ZIF connector on the system board and remove the cable (Figure 3-46).
  • Page 71 8. Reverse the above procedure to replace the cable. The snap fasteners are mounted from the display side of the chassis. Chapter 3.8 REMOVING THE SYSTEM MODULE COMPONENTS Most system module components are readily accessible by removing only the rear cover. It is recommended that the auxiliary battery be disconnected from the system board during any maintenance inside the computer.
  • Page 72 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< To prevent damage to electronic components, always disconnect the auxiliary battery after removing the back cover. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 4. Remove the four Phillips head screws securing the hard drive to its mounting brackets (Figure 3-47). 5. The hard drive is connected directly to the system board. Slide the hard drive off of its connector on the system board and lift the hard drive out of the computer (Figure 3-48).
  • Page 73 Installing the Hard Drive To install a hard drive into the computer, complete the following steps: 1. The hard drive is connected directly to the system board (Figure 3-49). Position the hard drive, component side down, inside of its mounting brackets, and slide it onto the connector on the system board.
  • Page 74 2. The mounting holes in the mounting brackets are in the shape of a "snowman." This hole configuration was designed to accommodate both types of hard drives. The configuration provides a mounting hole and a mounting slot on each side of the hard drive. Your hard drive will align with either the upper or lower mounting holes/slots.
  • Page 75 Removing the Power Supply The power supply is mounted on the system board on the system side of the chassis. Therefore, you need to remove the back cover only to remove and replace the power supply. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< The auxiliary battery must be disconnected before attempting to install or remove the power supply.
  • Page 76 The power supply must be removed in the manner prescribed below to prevent damage to the power supply connector. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 6. The power supply is connected directly to the system board by a connector on its bottom side. Begin lifting the power supply along the edge away from the hard drive.
  • Page 77 Take care not to over tighten the mounting screws. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>><<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< 4. Connect the auxiliary battery. 5. Replace the back cover. Removing the Memory Board The memory board is attached to the system board by its two connectors and is secured in place by structural features in the back cover. To gain access to the memory board for removal and replacement, only the rear cover has to be removed.
  • Page 78 Installing the Memory Board To install a memory board into the computer, complete the following steps: 1. Align the memory board with its connectors on the system board. Make certain the long connector on the memory board is aligned with the long connector on the system board.
  • Page 79 IMPORTANT: Make certain that there is no diskette inserted in the drive before continuing with this procedure. 3. Place the computer face down on a flat, clean surface and remove the rear cover (Section 3.4). Leave the system-chassis-display subassembly resting in the front cover. 4.
  • Page 80 >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< To avoid damage to the diskette drive cable, determine if the diskette drive connector on the system board is a ZIF or LIF connector. If it is a ZIF connector, be sure to release the slide on the connector before attempting to release or connect the cable.
  • Page 81 7. Remove the cable from the LIF connector on the diskette drive and retain for use in the new drive. Installing the Diskette Drive To install a diskette drive into the computer, complete the following steps: 1. The diskette drive is connected to the system board with a short ribbon cable.
  • Page 82 2. Position the diskette drive inside of the mounting brackets and align the mounting holes (Figure 3-58). >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>> CAUTION <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<< A long screwdriver (6" long bit) is recommended for installing the diskette drive mounting screws on the side toward the PCMCIA slot. Also, take care not to over tighten the mounting screws.
  • Page 83 3. Install the four T-8 Torx slotted mounting screws (Figure 3-59). Removing the PCMCIA Ejector Rails The PCMCIA ejector rails are mounted directly to the chassis and are located on the system side of the chassis. Therefore, to gain access to the ejector rails, only the rear cover has to be removed.
  • Page 84 5. Slide the ejector rail out (Figure 3-61). Installing the PCMCIA Ejector Rails 1. Install the new ejector rails (Figure 3-62).
  • Page 85 2. Insert the PCMCIA spacer into the rails to assist with rail alignment (Figure 3-63). 3. Install the two mounting screws (Figure 3-60). 4. After installing the two mounting screws, you can either remove the PCMCIA spacer or leave it stored in the slot. 5.
  • Page 86 Removing the System Board The system board is mounted to the chassis in the system module. Removal and replacement of system board requires removal of all components in the system module. To remove the system board, complete the following steps: 1.
  • Page 87 b. Disconnect the display cable from the system board (Figure 3-65). Retain the ferrite ring for reuse. c. Remove the hard drive (Section 3.8). d. Remove the power supply (Section 3.8). e. Remove the four power supply screw locks (Figure 3-66).
  • Page 88 f. Remove the memory board (Section 3.8). g. Remove the diskette drive (Section 3.8). h. Remove the PCMCIA ejector rails and retain for future use (Section 3.8). NOTE: The ejector rails are not supplied with the replacement system board. Always remove the ejector rails and retain them for future use when removing a system board.
  • Page 89 Replacing the System Board To replace the system board, complete the following steps: 1. Position the system board on the chassis, align the inverter connector with the connector on the inverter board, and install the mounting screws in the following sequence: a.
  • Page 90 2. Reference section 3.6 and install the following: a. Hard drive b. Power supply c. Memory board d. Diskette drive e. PCMCIA ejector rails 3. Connect the display cable, with ferrite bead, to the system board (Figure 3-70).
  • Page 91 4. Connect the LED/Switch cable to the system board (Figure 3-71). 5. Turn the assembly over, system side down, and reference section 3.5 to install the following: a. Display/digitizer assembly b. Inverter board 6. Install the keyboard connector screw (Figure 3-72).
  • Page 92 7. Replace the speaker gasket on the LED/Switch cable. 8. Connect the auxiliary battery cable to the system board (Figure 3-73). 9. Reference Section 3.4 and replace the covers. 10. Reference Section 3.3 to install the main battery and connect peripherals.
  • Page 93 Removing and Replacing the Auxiliary Battery The auxiliary battery is mounted in a cutout on the system side of the chassis and is secured in place by structural features in the chassis. To gain access to the memory board for removal and replacement, only the rear cover has to be removed.
  • Page 94 6. Lift the end of the battery opposite the cable and pull the battery out of the cutout in the chassis (Figure 3-75). 7. Reverse steps 5 and 6 to install a new battery. Be sure to place the cable end of the battery first. >>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>...
  • Page 95 Chapter 4 - Removal and Replacement Procedures INTRODUCTION This chapter provides subassembly/module level removal and replacement procedures for the FlexConnect. Chapter 4.1 DISASSEMBLY/ASSEMBLY SEQUENCE This section provides an outline of the disassembly for the FlexConnect. Disassembly to replace subassemblies/assemblies should be performed in the following sequence: Preparing the FlexConnect for Service Preparation of the FlexConnect for service includes removing the computer...
  • Page 96 can be serviced at any time; the remaining components must be serviced in the sequence presented. These components include: o Clutch actuator (any sequence) o Metal pan cover o Flex cable o Interface card o Power button Servicing the Bases Replacement of the front and rear bases of the FlexConnect requires a complete disassembly.
  • Page 97 Chapter 4.3 REMOVING AND REPLACING THE RUBBER FEET The front and rear feet can be removed and replaced without disassembly of the unit. However, it is recommended that the computer and all external equipment and power be removed before performing any service procedures on the unit.
  • Page 98 Removing and Replacing the Rear Feet The rear feet are held in place by two of the rear cover screws. Complete the following steps to remove and replace the rear feet: 1. Prepare the FlexConnect for service by completing the steps in Section 4.2.

  • Page 99: Chapter 4.4 Removing The Covers

    Chapter 4.4 REMOVING THE COVERS Only the front and rear top covers have to be removed to perform maintenance on the FlexConnect. Removal of the front and rear bases is necessary only to replace the bases or the clutches. Removing the Front Cover The front cover must be removed for the following maintenance procedures: o Removal and replacement of the eject levers o Removal and replacement of the flex cable assembly...
  • Page 100 3. Position the cover and insert the five screws to reinstall. Removing the Rear Cover The rear cover must be removed for the following replacement procedures: o Clutch actuator replacement o Interface board replacement o Power button replacement o Ribbon cable replacement Complete the following steps to remove and replace the rear cover: 1.
  • Page 101 3. Position the cover and insert the nine screws to reinstall. Chapter 4.5 REMOVING THE FRONT MODULE COMPONENTS The following components are located in the front module and are accessible by removing the front cover: o Eject levers o Flex cable connector Removing the Eject Levers Complete the following steps to remove and replace the eject levers: 1.
  • Page 102 Removing the Flex Cable Removal of the flex cable requires access to the front and rear modules of the FlexConnect. This procedure is presented in Section 4.6. Chapter 4.6 REMOVING THE REAR MODULE COMPONENTS The following components are located in the rear module: o Clutch actuator o Interface board o Power button...
  • Page 103 5. Remove the two screws securing the flex cable to the interface board and disconnect the flex cable from the interface board (Figure 4-8). 6. Remove the two screws securing the flex cable connector to the front pan assembly (Figure 4-9).
  • Page 104 7. Slide the cable out toward the front module. 8. Reverse the above procedure to install a new flex cable. Removing and Replacing the Power Button This procedure requires removal of the rear cover, the metal pan cover, and the interface board. Complete the following to replace the button: 1.
  • Page 105 5. Remove the screw locks and screws from I/O bulkhead (Figure 4-11). 6. Remove the two screws securing the flex cable to the interface board and disconnect the flex cable from the interface board (Figure 4-12).
  • Page 106 7. Remove the screw and two screw locks that secure the board to the sheet metal pan (Figure 4-13). 8. Rotate the interface board out of the sheet metal pan (Figure 4-14).
  • Page 107 9. Snip the tethers that are securing the power button to board (Figure 4-15). 10. Install the new power button by feeding the tethers through the hole in the interface board, pulling on the tethers to pull the enlarged area through the hole, and then snip off the excess from the tethers on the under side of the interface board (Figure 4-16).
  • Page 108 interface board. Make certain that you trim the excess from between the enlarged area and the free end of the tether. 11. Reverse the previous steps to reassemble the interface board. Removing and Replacing the Interface Board This procedure requires removal of the rear cover and the metal pan cover. Complete the following steps to replace the interface board: 1.
  • Page 109 4. Remove the bezel from side of the FlexConnect (Figure 4-18). 5. Remove the two screws securing the flex cable to the interface board and disconnect the flex cable from the interface board (Figure 4-19).
  • Page 110 6. Lift the interface board, with pan attached, out of base (Figure 4-20). 7. Reverse the previous steps to install a new card and reassemble the unit. Removing and Replacing the Clutch Actuator This procedure requires removal of the rear cover only.
  • Page 111 1. Prepare the FlexConnect for maintenance (Section 4.2) 2. Remove the rear cover (Section 4.4). 3. Remove the two screws securing the clutch bracket to the base (Figure 4-21). 4. Remove the clutch actuator. Lift the clutch a sufficient height away from the plastic to allow removal of the actuator (Figure 4-22).
  • Page 112 5. Reverse the previous steps to replace the clutch actuator and to reassemble the unit. Chapter 4.7 REMOVING THE BASES Disassembly of the FlexConnect to release the front base also releases the rear base. Therefore, removal of both bases is included in the one procedure.
  • Page 113 7. Remove the clutch mounting screws from the front and rear bases and remove the clutch assemblies (Figure 4-24). This releases the front and rear bases. NOTE: Releasing the clutch assembly from the base also frees the clutch actuator. Set the clutch actuators aside for reassembly. 8.
  • Page 114 Chapter 5.1 POST POST is a series of diagnostic tests that runs automatically on the Compaq Concerto Personal Computers when the system is turned on. POST checks the following assemblies to ensure that the computer system is...
  • Page 115 3. Install all appropriate loopback plugs and terminating plugs for complete testing. 4. Clear the power-on-password, if it is preset by the user. You will know that the power-on password is set when a Personal Identification Number (PIN) tablet appears on the screen when POST completes (Figure 5-1).
  • Page 116 beeps, and the cursor moves. 8. If prompted, select the desired language. The Configuration and Diagnostics Menu will be displayed. Follow the procedures of the Problem Isolation Flowchart, Section 5.4, and refer to Chapter 6, "Error Messages and Codes," for detailed information on problem isolation.

  • Page 117: Chapter 5.4 Problem Isolation Flowchart

    Procedures") then reconnect the AC power. 8. Turn on the computer and allow it to complete POST. If the PIN tablet does not appear when POST completes, the power-on password was erased. Chapter 5.4 PROBLEM ISOLATION FLOWCHART The problem isolation flowchart provides a quick reference for identifying and correcting problems that may occur during POST.

  • Page 125: Chapter 6.1 Power-On Self-Test Messages

    Chapter 6 - Error Messages and Codes INTRODUCTION This chapter contains Power-On Self-Test (POST) messages, diagnostic error codes, and memory error codes. The messages and codes appear in tables that include a description of the error, the probable cause, and the recommended action that should be taken to resolve the error condition.
  • Page 126 --------------------------------------------------------------------------- XX000Y ZZ * None RAM failure 1. Replace the memory 201-Memory card. Error 2. Replace the system board. --------------------------------------------------------------------------- XX000Y ZZ * None RAM failure Replace the system board. --------------------------------------------------------------------------- 205-Memory None Cache memory error Run diagnostics to help Error identify error.

  • Page 127: Chapter 6.2 Diagnostic Error Codes

    1781-Disk 1 None Hard drive/format 1. Run diagnostics. Failure error 2. Replace the drive. --------------------------------------------------------------------------- 1782-Disk None Hard drive 1. Run diagnostics. Controller controller error 2. Replace the drive. Failure --------------------------------------------------------------------------- 1790-Disk 0 None Hard drive error 1. Run diagnostics. Error 2.
  • Page 128 --------------------------------------------------------------------------- 102-01 Coprocessor initial status The following steps apply to error word incorrect codes 102-XX: 102-02 Coprocessor initial control 1. Run SETUP. word incorrect 2. Replace system board and retest. 102-03 Coprocessor tag word not all ones 102-04 Coprocessor tag word not all zeros 102-05 Coprocessor exchange...
  • Page 129 104-03 Interrupt controller software RTC is inoperative 105-01 Port 61 bit 6 not at zero 105-02 Port 61 bit 5 not at zero 105-03 Port 61 bit 3 not at zero 105-04 Port 61 bit 1 not at zero 105-05 Port 61 bit 0 not at zero 105-06 Port 61 bit 5 not at one...
  • Page 130 112-02 Speed test mixed mode out of range 112-03 Speed test fast mode out of range 112-04 Speed test unable to enter slow mode 112-05 Speed test unable to enter mixed mode 112-06 Speed test unable to enter fast mode 112-07 Speed test system error 112-08...
  • Page 131 204-02 Error during saving program memory in address test 204-03 Error during restore of program memory in address test 204-04 A20 address test failed 204-05 Page hit address test failed 205-01 Walking I/O test failed 205-02 Error during saving program memory in walking I/O test 205-03 Error during restore of...
  • Page 132 303-07 Keyboard LED test, LED command test failed 303-08 Keyboard LED test, command byte restore test failed 303-09 Keyboard LED test, LEDs failed to light 304-01 Keyboard typematic test failed 304-02 Unable to enter mode 3 304-03 Incorrect scan code from keyboard 304-04 No make code observed...
  • Page 133 402-10 Printer interrupt and control register failed 402-11 Printer interrupt and loopback failed 402-13 Printer interrupt, loopback, and data register failed 402-14 Printer interrupt, loopback, and control register failed 402-15 Printer interrupt, loopback, data, and control register failed 402-16 Printer unexpected interrupt received 403-01 Printer pattern test failed...
  • Page 134 limit 610-02 Exceeded maximum hard error limit 710-03 Previously exceeded maximum soft error limit 610-04 Previously exceeded maximum hard error limit 610-05 Failed to reset controller 610-06 Fatal error while reading 610-07 Fatal error while writing 610-08 Failed compare of write/read buffers 610-09 Failed to format a track...
  • Page 135 --------------------------------------------------------------------------- 699-00 Diskette drive/media ID 1. Replace media. error 2. Run SETUP. =========================================================================== Table 6-7. Serial Test Error Codes =========================================================================== Error Description Recommended Action Code =========================================================================== 1101-01 Serial Port Test; UART DLAB The following steps apply to error bit failure codes 1101-XX through 1109-XX: 1101-02 Serial Port Test;...
  • Page 136 1109-03 Clock reset failure 1109-04 Input line or clock failure 1109-05 Address line fault 1109-06 Data line fault; Clock Register Test =========================================================================== Table 6-8. Modem Communications Test Error Codes =========================================================================== Error Description Recommended Action Code =========================================================================== 1201-XX Modem internal loopback test The following steps apply to error codes 1201-XX through 1210-XX: 1201-01...
  • Page 137 1202-01 Modem timed out waiting for SYNC (local loopback mode) 1202-02 Modem timed out waiting for response (local loopback mode) =========================================================================== Error Description Recommended Action Code =========================================================================== 1202-03 Modem exceed data block The following steps apply to error retry limit (local loopback codes 1201-XX through 1210-XX: mode) 1.
  • Page 138 Error Description Recommended Action Code =========================================================================== 1210-02 Modem timed out waiting for The following steps apply to error response codes 1201-XX through 1210-XX: 1210-03 Modem exceeded data block 1. Refer to modem documentation for retry limit correct setup procedures. 2. Check the modem line. 1210-04 RCV exceeded carrier lost 3.
  • Page 139 1708-XX Hard drive format bad track test failed 1709-XX Hard drive reset controller test failed 1710-XX Hard drive park head test failed 1714-XX Hard drive file write test failed 1715-XX Hard head select test failed 1716-XX Hard drive conditional format test failed 1717-XX Hard drive ECC * test failed...
  • Page 140 1719-43 Failed to format bad track 1719-44 Failed disk controller diagnostics 1719-45 Failed to get drive parameters from ROM 1719-46 Invalid drive parameters found in ROM =========================================================================== Error Description Recommended Action Code =========================================================================== 1719-47 Failed to park heads The following steps apply to error codes 1700-XX through 1799-XX: 1719-48 Failed to move disk table...
  • Page 141 1719-66 Failed initial drive parameter 1719-67 Failed to write long 1719-68 Failed to read long 1719-69 Failed to read drive size from controller 1719-70 Failed translate mode 1719-71 Failed nontranslated mode 1719-72 Bad track limit exceeded 1719-73 Previously exceeded bad track limit 1719-74 Failed sleep mode...
  • Page 142 2409-XX Video 320 x 200 mode color set 1 test failed 2410-XX Video 640 x 200 mode test failed 2411-XX Video screen memory page test failed 2412-XX Video gray scale test failed 2414-XX Video white screen test failed 2416-XX Video noise pattern test failed 2418-XX ECG/VGC memory test...
  • Page 143 2458-XX Advanced VGA BitBLT test The following steps apply to error codes 2458-XX through 2480-XX: 2468-XX Advanced VGA DAC test 1. Run SETUP. 2477-XX Advanced VGA data path test 2. Replace the system board and retest. 2480-XX Advanced VGA DAC test =========================================================================== Table 6-11.

  • Page 144: Chapter 7.1 System Unit

    Chapter 7 - Specifications INTRODUCTION This chapter provides physical, environmental, and performance specifications for the Compaq Concerto Personal Computer and the following subsystems: o Liquid Crystal Display o 3 1/2-inch, 1.44-Megabyte Diskette Drive o Hard Drive o Internal Power Supply...

  • Page 145: Chapter 7.2 Liquid Crystal Display

    Nonoperating -4oF to 140oF -20oC to 60oC --------------------------------------------------------------------------- Relative Humidity (Noncondensing): Operating 10% to 90% Nonoperating 5% to 95% --------------------------------------------------------------------------- Shock and Vibrations Shock: Operating 10G, 11 ms, half sine Nonoperating 60G, 11 ms, half sine Vibration: Operating 0.25G, 5-500 Hz/octave/min sweep Nonoperating 1.00G, 5-500 Hz/octave/min sweep ---------------------------------------------------------------------------...
  • Page 146 Diskette Drive =========================================================================== 1.44 MB =========================================================================== Diskette Size 3-1/2 in --------------------------------------------------------------------------- Light Indicators: Read/Write (high density) Green Read/Write (low density) Green --------------------------------------------------------------------------- Capacity Per Diskette (high/low) 1.44MB/720KB --------------------------------------------------------------------------- Drives Supported --------------------------------------------------------------------------- Drive Height 0.6 in (1.55 cm) --------------------------------------------------------------------------- Drive Rotation (rpm) --------------------------------------------------------------------------- Transfer Rate (bps) (high/low)

  • Page 147: Chapter 7.5 Internal Power Supply

    1.9 cm 1.9 cm --------------------------------------------------------------------------- Drive Width 2.75 in 2.75 in 6.98 cm 6.98 cm --------------------------------------------------------------------------- Drive Depth 4.00 in 4.00 in 10.16 cm 10.16 cm --------------------------------------------------------------------------- Drive Type --------------------------------------------------------------------------- Transfer Rate (Mbits/sec): Head (Zone 1) 28.28 (Zone 2) 26.09 (Zone 3) 24.77 (Zone 4)

  • Page 148: Chapter 7.7 Ac Adapter

    --------------------------------------------------------------------------- Cooling Convection --------------------------------------------------------------------------- VDC Output: Nominal Voltage +5.075 VDC Nominal Continuous Current Maximum 2.2A Maximum Peak Current 4.0A Regulation Tolerance +/- 0.15 --------------------------------------------------------------------------- Output Current (Amps) --------------------------------------------------------------------------- Voltage Normal Operation Standby Typical Typical 3.3 Volts .864 .007 .010 5.075 Volts .164 .010 .350...
  • Page 149 Power Supply: Operating voltage 100 - 120/220 - 240 VAC Maximum output voltage 18.5V Maximum output current 3.1A Maximum output power Operating current 1.0/0.5A Frequency 50 - 60 Hz =========================================================================== Chapter 7.8 FLEXCONNECT FlexConnect =========================================================================== Dimensions: Height 3.25 in - 10.25 in 8.25 cm - 26.0 cm Width 16.0 in...

  • Page 150: Appendix A - External Connectors

    Appendix A - External Connectors Compaq Concerto External Connectors Table A-1. Compaq Concerto External Connectors =========================================================================== Index Description =========================================================================== FlexConnect connector Mouse/Keyboard Enhanced parallel connector Serial connector External Monitor connector =========================================================================== Enhanced FlexConnect with Ethernet Connectors...
  • Page 151 Table A-2. Enhanced FlexConnect with Ethernet Connectors =========================================================================== Index Description =========================================================================== SCSI PS/2 Pointing Device (6-pin) Keyboard Parallel Connector (25-pin) Serial Connector (9-pin) External Storage (28-pin) Video Connector (15-pin) AUI Connector (15-pin) AUI AC Adapter RJ-45 Connector (8-pin) AC Adapter =========================================================================== FlexConnect Pass-Through Connectors...
  • Page 152 Table A-3. FlexConnect Pass-Through Connectors =========================================================================== Index Description =========================================================================== PS/2 Pointing Device (6-pin) Keyboard Parallel Connector (25-pin) Serial Connector (9-pin) External Storage (28-pin) Video Connector (15-pin) AC Adapter =========================================================================== Enhanced FlexConnect with Token Ring Connectors...
  • Page 153 Table A-4. Enhanced FlexConnect with Token Ring Connectors =========================================================================== Index Description =========================================================================== SCSI PS/2 Pointing Device (6-pin) Keyboard Parallel Connector (25-pin) Serial Connector (9-pin) External Storage (28-pin) Video Connector (15-pin) DB-9 Connector (9--pin) RJ-45 Connector (8-pin) AC Adapter ===========================================================================...

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