Compaq Portable 486 - Notebook PC Spécifications

Notice The information in this guide is subject to change without notice.Compaq Computer Corporation shall not be liable for technical or editorialerr

troubleshooting information.

Chapter 3. Error Messages and Codes This chapter contains Power On Self Test (POST) messages, Diagnostic errorcodes, and memory error codes for the CO

Mismatch configuration notupdated174 - EISA 1 Short EISA boardConfiguration/ not foundSlot Mismatch175 - EISA 1 Short EISA board added,Configuration/

and retest.2. Run Diagnostics.3. Replace theI/O board.-----------------------------------------------------------------------------605 - Diskette Driv

Chapter 1. Specifications Introduction This chapter provides physical, environmental, and performance specificationsfor the following COMPAQ PORTABLE

-----------------------------------------------------------------------------1782 - Disk None Fixed disk drive 1. Run Diagnostics.Controller controlle

Diagnostic error codes occur if the system recognizes a problem while runningthe Diagnostics program (refer to the SUPPORT SOFTWARE MAINTENANCE ANDSER

unexpected101 - 95 Coprocessor and processorboard conflict101 - 96 Refer to Authorized CompaqDealer Service Bulletin No. 84.--------------------------

103 - 03 DMA word controller testfailed104 - 01 Interrupt controller mastertest failed104 - 02 Interrupt controller slavetest failed104 - 03 Interrupt

109 - 02 CMOS clock rollover testfailed109 - 03 CMOS clock test, CMOS notproperly initialized---------------------------------------------------------

113 - 50 BIOS dispatch of processor113 - 51 Processor is unavailableor nonexistent113 - 52 Time out waiting forcompletion of test113 - 54 Time out wai

204 - 02 Error during savingprogram memory inaddress test-----------------------------------------------------------------------------Error Recommende

page not present211 - xx Random Pattern Test211 - 01 Memory random patterntest failed211 - 02 Error during saving programmemory and random patternin w

-----------------------------------------------------------------------------Error RecommendedCode Description Action---------------------------------

402 - 09 Printer interrupt and dataregister failed402 - 10 Printer interrupt and controlregister failed-----------------------------------------------

TemperatureOperating 50oF to 104oF 10oC to 40oCNonoperating -22oF to 140oF -30oC to 60oCRelative Humidity (noncondensing)Operating 20% to 80% 20% to 8

507 - 01 Video 40 x 25 ModeTest Failed508 - 01 Video 320 x 200 ModeColor Set 0 Test Failed509 - 01 Video 320 x 200 Mode ColorSet 1 Test Failed510 - 01

610 - 02 Exceeded maximumhard error limit610 - 03 Previously exceededmaximum soft error limit---------------------------------------------------------

3. Check and/or replacedrive cable andretest.4. Replace the I/O boardand retest.----------------------------------------------------------------------

1101 - 14 Serial Port Test;DRIVER/RECEIVERdata failure1101 - 15 Serial port test modemdetection1101 - 16 Serial port test, modemROM checksum1101 - 17

1201 - 08 UART TX/RX buffer failure1201 - 09 INTERRUPT circuitfailure1201 - 10 COM1 set to invalidinterrupt1201 - 11 COM2 set to invalidinterrupt1201

1202 - 21 Modem timed out waiting documentation forfor SYNC (analog loopback Configuration utilityanswer mode) procedures.2. Check the modem line.1202

1210 - 08 Modem timed out waitingfor remote response1210 - 09 Modem exceededmaximum redial limit1210 - 10 Line quality preventedremote connection1210

select test failed drive and retest.2. Replace the power1716 - xx Fixed disk drive conditional distribution board andformat test failed retest.3. Repl

1719 - 47 Failed to park heads1719 - 48 Failed to move disktable to RAM-----------------------------------------------------------------------------Er

1719 - 68 Failed to read long1719 - 69 Failed to read drive sizefrom controller1719 - 70 Failed translate mode1719 - 71 Failed nontranslated mode1719

Width 8.3 inch 21.1 cm-----------------------------------------------------------------------------Diagonal Size 10.4 inch 26.4 cm--------------------

1906 - 08 Unable to servo write-----------------------------------------------------------------------------Error RecommendedCode Description Action--

1906 - 34 No data detected1906 - 35 Power on reset occurred1906 - 91 Power lost during test===========================================================

2420 - 01 Video attribute test failed2421 - 01 Video 640 x 200 graphicsmode test failed2422 - 01 Video 640 x 350 16color set test failed2423 - 01 Vide

| | | 08, 10, 20, 40, 80, ??|||| | | 00 = parity bit| | | 01 = data bit 0| | | 02 = data bit 1| | | 04 = data bit 2| | | 08 = data bit 3| | | 10 = dat

Chapter 4. Illustrated Parts Catalog This chapter provides an illustrated parts breakdown and identifies the spareparts for the standard features of t

Table 4-1. System Unit=============================================================================Description Spare Part Number----------------------

=============================================================================Description Spare Part Number--------------------------------------------

Table 4-4. Cables=============================================================================Description Spare Part Number---------------------------

Table 4-5. COMPAQ PORTABLE 486c Personal Computer Processor Board Connectors==========================================================================

Table 4-7. Processor and Standard Board Assemblies and Subassemblies=============================================================================Item

NOTE: These values are maximum values based on nominal operating conditionsfor temperature, line voltage, frequency, and altitude.--------------------

Table 4-8. Keyboards=============================================================================Description Spare Part Number------------------------

-----------------------------------------------------------------------------System Unit:System Chassis 128937-001Front Bezel 128946-001Rear Panel 128

Belgian 128958-018Documentation:Service Aids Kit 105264-001Maintenance and Service Guides:COMPAQ PORTABLE 486c Personal Computer 128987-001Options and

Screw Kit 136967-0016-32, MA, TH, T-15, CSScrew Kit 119548-0016-32 x 1/4, Torx, TT, HI, T/WSrScrew Kit 136966-0016-32 x 1/4, S-Torx, PNHDScrew Kit 128

Chapter 5. Removal and Replacement Procedures Introduction This chapter provides module level removal and replacement procedures for theCOMPAQ PORTAB

grounding are necessary precautions to prevent damage. Use the followingprecautions to protect equipment from static damage:o To avoid hand contact, t

Grounding WorkstationsTo provide a grounded workstation, do the following:o Cover workstations with approved static dissipating material. Provide awri

o Conductive foamo Conductive table top workstations with ground cord of 1 megohm resistanceo Static dissipating table or floor mats with hard tie to

| | |-- Real Time Clock/Battery||5.9 | |-- POWER SUPPLY||5.10 | |-- FAN ASSEMBLY||5.11 | |-- I/O BOARD|5.12 |-- BASE PANEL|5.13 |-- MASS STORAGE DEVIC

3. Disconnect all external devices (printer, monitor, and other devices)from the computer.>>>>>>>>>>>>>>>

Drives Supported One OneForm Factor 3 1/2 inch 3 1/2 inchDrive Height 1 inch 1 inchDrive Weight 1.3 lb 1.3 lbDrive Type (logical) 51 50Drive Speed 450

2. Using a nonconductive probe, remove the access cover (Figure 5-3).3. Disconnect the keyboard cable by gently pulling the keyboard connectortab (Fig

4. Carefully remove the keyboard cable from the cable slot (Figure 5-4).To replace the keyboard, reverse the steps in the above illustrations.Chapter

2. Lift the handle and remove two screws, using a Torx T-15 screwdriver(Figure 5-5).3. Pull the rear panel out and up, until the bottom latches are re

with the appropriate slots.2. Slide the rear panel down and forward, and secure with the two screwsusing a Torx T-15 screwdriver.Chapter 5.7 Options C

To replace the options cover, reverse the steps in the above illustration.Chapter 5.8 Standard Boards Video BoardTo remove the video board, complete t

(Figure 5-9).5. Carefully disconnect the video cable from the video board (Figure 5-9).6. Using a Torx T-10 screwdriver, remove the screw securing the

5. Carefully pull the processor board out of the slot (Figure 5-10).To replace the processor board, reverse the steps in the above illustration.System

6. Using the ROM removal tool, grasp the ROM and gently pull up until it isreleased from the socket (Figure 5-11).To replace the system ROM, reverse t

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>&g

3. Using a Torx T-15 screwdriver, remove three screws securing the powersupply to the I/O board (Figure 5-13).4. Pull out the power supply with the sw

Chapter 2. Power On Self Test (POST) Introduction This chapter lists the subassemblies checked by the Power On Self Test (POST)and briefly describes

4. Using a Torx T-10 screwdriver, remove the screw securing the fan assembly(Figure 5-14).5. Slide the fan assembly out (Figure 5-14).To replace the f

8. Disconnect the fan assembly cable (Figure 5-15).9. Using a Torx T-10 screwdriver, remove the screw securing the internalkeyboard connector to the d

2. Position the computer on the rear panel (Figure 5-16).3. Using a Torx T-15 screwdriver, remove the screw from the base panel(Figure 5-16).4. Remove

3. Using a Torx T-15 screwdriver, remove the screws securing the diskettedrive cage; then swing the drive cage out (Figure 5-17).4. Using a Torx T-15

3. Using a Torx T-15 screwdriver, remove the screws securing the fixed diskdrive cage; then swing the drive cage out (Figure 5-18).4. Lift the fixed d

Chapter 5.14 Active Matrix Color Display Front BezelTo remove the front bezel, complete the following steps:1. Remove the keyboard (Section 5.5).2. Pu

Display AssemblyTo remove the display assembly, complete the following steps:1. Remove the keyboard (Section 5.5).2. Remove the front bezel (Section 5

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>&g

4. Place the display assembly screen down on a soft, clean surface.5. Using a Phillips screwdriver, remove the four screws securing the displayassembl

1. Remove the keyboard (Section 5.5).2. Remove the front bezel (Section 5.14).3. Remove the display assembly (Section 5.14).>>>>>>&g

5. Access the fixed disk drive.You will know that the fixed disk drive password is set when theDriveLock icon (see illustration of DriveLock icon belo

6. Pull the display inverter board insulator aside to gain access to thescrews (Figure 5-23).7. Using a Torx T-15 screwdriver, remove five screws secu

4. Carefully release the speaker assembly tabs and remove the speakerassembly from the display inverter board (Figure 5-24).To replace the speaker ass

on the display inverter board (Figure 5-25).4. Turn the computer around and remove the rear panel (Section 5.6).5. Remove the options cover (Section 5

13. Using a Torx T-15 screwdriver, remove four screws securing the powerdistribution board (Figure 5-27).14. Carefully pull the I/O cables, diskette d

Chapter 5.16 Keylock To remove the keylock, complete the following steps:1. Remove the rear panel (Section 5.6).2. Remove the options cover (Section 5

To replace the keylock, reverse the steps in the above illustration.Chapter 5.17 Memory Expansion Some of the memory expansion alternatives for the CO

4 MB 2 MB 8 MB 8 MB 22 MB4 MB 4 MB 8 MB 8 MB 24 MB4 MB 8 MB 8 MB 8 MB 28 MB||| | |||| | |8 MB 8 MB 8 MB 8 MB 32 MB====================================

Chapter 6. Jumper and Switch Information This chapter provides the switch settings for the COMPAQ PORTABLE 486cPersonal Computer I/O board. The I/O bo

SW5 ON Enabled Controls the power onOFF Disabled password.OFF is the default positionand enables the power onpassword feature.ON will clear the powero

1. Disconnect the AC power.2. Disassemble the computer to reach the I/O board (refer to Chapter 5).3. Locate the power on password switch (SW5) on the