Compaq 420 - Notebook PC Spezifikationen

Compaq 320 Notebook PCCompaq 321 Notebook PCCompaq 420 Notebook PCCompaq 421 Notebook PCCompaq 620 Notebook PCCompaq 621 Notebook PCHP 420 Notebook PC

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset T5870, 2.00-GHz, 800-MHz FSB, 2-MBcache √√ P7570,

SpeakerThe spare part number for the speaker used in all models is 605792-001.Before removing the speaker, follow these steps:1.Shut down the computer

Display assemblyDescription Spare part number●39.6-cm (15.6-in) HD BrightView display assembly for use in computers equipped withwebcam (1366×768 reso

Description Spare part number●33.8-cm (13.3-in) HD BrightView display assembly for use in computers with WLAN andwithout webcam (1366×768 resolution),

3.Release the WLAN cables from the cable run (3), being careful when pulling them through theopening near the hard drive.4. Remove eight Torx M2.5×6.0

3.Release the WLAN cables from the cable run (3), being careful when pulling them through theopening near the hard drive.4.Remove four Torx M2.5×6.0 s

Remove the display assembly:1. If it is necessary to replace the display bezel, display enclosure, or display hinges, remove the twomylar screw covers

4.If it is necessary to replace the webcam module, disconnect the webcam cable from the module(1), and pull the webcam module (2) that is attached wit

2.Remove the display hinges (2) by pulling them away from the display panel. The left and rightdisplay hinges are available in the Hinge Kit, spare pa

2.Remove the microphone cable from the raceway (2) in the display enclosure.To replace the display cable assembly:1. Place the display panel face down

2.Peel the WLAN antenna receivers (2) from the enclosureReverse this procedure to assemble the display assembly.Component replacement procedures101

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset 35.6-cm (14.0-in) HD LED backlight panel:●1366×768

System boardNOTE: The system board spare part kit includes replacement thermal material.Description Spare part numberSystem board with UMA graphics an

Remove the system board on a 39.6-cm (15.6-in) computer:1.Position the computer with the front toward you.2. Release the audio ZIF connector (1) and d

7.Pull the extender out (2) of the system board and lift it from the base enclosure.8.Release the RJ-11 cable from the cable routing area, lift the co

2.Remove the Phillips PM2.0×3.0 screw (1) that secures the board to the base enclosure, disconnectthe audio ZIF connector and remove the flat-ribbon c

7.Slide the system board (5) out of the base enclosure.Reverse this procedure to install the system board.Main battery connector The main battery cabl

Remove the main battery cable:1. Remove the two Phillips PM2.5×4.0 screws (1) that secure the connector to the base enclosure.2. Lift the connector up

RTC batteryThe spare part number for the RTC battery is 449137-001.Before removing the RTC battery, follow these steps:1.Shut down the computer. If yo

2.Release the RTC battery from the socket (1) on the system board and lift the battery (2) up.Reverse this procedure to install the RTC battery.Modem

10.Remove the keyboard (see Keyboard on page 78).11. Remove the top cover (see Top cover on page 82).12.Remove the system board (seeSystem board on pa

Reverse this procedure to install the modem module.Audio boardNOTE: The spare part number for the audio board is 598684-001.Before removing the audio

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset Supports the following drives:●500-GB, 7200-rpm●500

2.Remove the Phillips PM2.0×3.0 screw (1) that secures the audio board to the base enclosure andthen remove the audio board (2).Remove the audio board

5 Computer SetupComputer Setup in WindowsStarting Computer SetupComputer Setup is a preinstalled, ROM-based utility that can be used even when the ope

NOTE: You can use either a pointing device (TouchPad, pointing stick, or USB mouse) or thekeyboard to navigate and make selections in Computer Setup.2

Computer Setup menusThe menu tables in this section provide an overview of Computer Setup options.NOTE: Some of the Computer Setup menu items listed i

Select To do thisIgnore Changes and Exit Cancel any changes entered during the current session. Thenexit and restart the computer.Save Changes and Exi

Security menuNOTE: Some of the menu items listed in this section may not be supported by your computer.Select To do thisSetup BIOS Administrator Passw

System Configuration menuNOTE: Some of the listed System Configuration options may not be supported by your computer.Select To do thisLanguage Change

Select To do thisDevice Configurations●Enable/disable USB legacy support (enabled by default).When enabled, USB legacy support allows the following:◦U

Select To do thisNOTE: Availability of these options above varies bycomputer model.●Enable/disable secondary battery fast charge (enabledby default).●

Select To do thisBuilt-In Device Options●Enable/disable the wireless button state (enabled bydefault).●Enable/disable embedded WWAN device (selectmode

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset S3/S4/S5 wake on LAN: AC only mode √√ √ Ethernat c

Select To do thisPort Options NOTE: All port options are enabled by default.●Enable/disable the serial port (select models only).●Enable/disable the

Computer Setup in LinuxStarting Computer SetupComputer Setup is a preinstalled, ROM-based utility that can be used even when the operating systemis no

Using Computer SetupNavigating and selecting in Computer SetupThe information and settings in Computer Setup are accessed from the File, Security, and

Computer Setup menusThe menu tables in this section provide an overview of Computer Setup options.NOTE: Some of the Computer Setup menu items listed i

Security menuNOTE: Some of the menu items listed in this section may not be supported by your computer or youroperating system.Select To do thisSetup

System Configuration menuNOTE: Some of the menu items listed in this section may not be supported by your computer or youroperating system.Select To d

Select To do thisBuilt-in device options●Enable/disable embedded WLAN Device Radio.●Enable/disable embedded Bluetooth Device Radio.●Enable/disable Net

6 SpecificationsComputer specifications Metric U.S.Dimensions – 39.6-cm (15.6-in)Depth 24.96 cm 9.83 inWidth 37.18 cm 14.6 inHeight (front to rear) 2.

Metric U.S.Operating (not writing to optical disc) 0°C to 35°C 32°F to 95°FOperating (writing to optical disc) 5°C to 35°C 41°F to 95°FNonoperating -

Metric U.S.Backlight LEDResponse Time 16 msTotal power consumption 5.6 W (max)Viewing angle @CR>10 5 VA39.6-cm (15.6-in) display specifications131

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipsetKeyboard/pointing devices39.6-cm (15.6-in) keyboard w

35.6-cm (14.0-in) display specifications Metric U.S.DimensionsHeight 17.40 cm 6.9 inWidth 30.94 cm 12.2 inDiagonal 35.50 cm 14.0 inNumber of colors 26

33.8-cm (13.3-in) display specifications Metric U.S.DimensionsHeight 16.50 cm 6.5 inWidth 29.34 cm 11.5 inDiagonal 33.66 cm 13.3 inNumber of colors 26

Hard drive specifications 500-GB* 320-GB* 250-GB* 160-GB*DimensionsHeight 9.5 mm 9.5 mm 9.5 mm 9.5 mmWidth 70 mm 70 mm 70 mm 70 mmWeight 101 g 101 g 1

DVD-ROM Drive specificationsApplicable disc DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18, CD-ROM (Mode 1 and 2), CD Digital Audio,CD-XA ready (Mode 2, Form 1

DVD±RW Double-Layer Combo Drive specificationsApplicable disc Read:CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM,CD-ROM XA, MIXED MODE CD, CD-I, CD-IBridge

7 Backup and recoveryBackup and recovery in Windows 7OverviewTo protect your information, use Windows Backup and Restore to back up individual files

You can back up your information to an optional external hard drive, a network drive, or discs.Note the following when backing up:●Store personal file

Performing a recovery In case of system failure or instability, the computer provides the following tools to recover your files:●Windows recovery tool

NOTE: For additional information on recovering information using the Windows tools, perform asearch for these topics in Help and Support.Using f11CAUT

3.When prompted, press any keyboard key.4. Follow the on-screen instructions.5.Click Next.6. Select Repair your computer.7. Follow the on-screen instr

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset Windows 7 Professional 32 with Office 2010Starter –

●Save customized settings that appear in a window, toolbar, or menu bar by taking a screen shotof your settings. The screen shot can be a time-saver i

NOTE: If you are unable to boot (start up) your computer, you must purchase a Windows Vista®operating system DVD to reboot the computer and repair the

To recover the original hard drive image using f11, follow these steps:1. If possible, back up all personal files.2.If possible, check for the presenc

Backup and recovery in Windows XPOverviewTo protect your information, use the Windows® Backup utility (select models only) to back up files andfolders

The screen image is added to the document.d. Save the document.To create a backup using the Windows Backup utility (select models only), follow these

3.Shut down the computer.4. Turn on the computer.5.Follow the on-screen instructions to install the operating system.6. After the operating system is

8 Connector pin assignmentsAudio-in (microphone)Pin Signal1 Audio signal in2 Audio signal in3GroundAudio-out (headphone)Pin Signal1 Audio out, left ch

External monitorPin Signal1 Red analog2 Green analog3 Blue analog4Not connected5Ground6 Ground analog7 Ground analog8 Ground analog9 +5 VDC10 Ground11

HDMIPin Signal1 Transition minimized differential signal (TMDS) data 2+2 TMDS data 2 shield3 TMDS data 2–4 TMDS data 1+5 TMDS data 1 shield6 TMDS data

RJ-11 (modem)Pin Signal1Unused2Tip3Ring4Unused5Unused6UnusedRJ-11 (modem)151

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset Windows 7 Home Basic 32 with Office 2007ready (excl

RJ-45 (network)Pin Signal1Transmit +2Transmit -3 Receive +4Unused5Unused6 Receive -7Unused8UnusedUniversal Serial BusPin Signal1 +5 VDC2 Data -3 Data

9 Power cord set requirementsThe wide range input feature of the computer permits it to operate from any line voltage from 100 to120 volts AC or from

Requirements for specific countries and regionsCountry/region Accredited agency Applicable note numberAustralia EANSW 1Austria OVE 1Belgium CEBC 1Cana

10 RecyclingBatteryWhen a battery has reached the end of its useful life, do not dispose of the battery in generalhousehold waste. Follow the local la

Perform the following steps to disassemble the display assembly:1. Remove all screw covers (1) and screws (2) that secure the display bezel to the dis

4.Disconnect all display panel cables (1) from the display inverter and remove the inverter (2).5. Remove all screws (1) that secure the display panel

10.Remove the display panel frame (2) from the display panel.11.Remove the screws (1) that secure the backlight cover to the display panel.12.Lift the

15.Remove the backlight cables (1) from the clip (2) in the display panel.16. Turn the display panel upside-down.WARNING! The backlight contains mercu

18.Remove the backlight from the backlight frame.19. Disconnect the display panel cable (1) from the LCD panel.20.Remove the screws (2) that secure th

IndexAAC adapterspare part numbers 39AC adapter, identifying 23access doorspare part number 32AMT options 122AMT setup prompt (Ctrl-P) 122firmware pro

Category Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipset Restore media: Windows 7 Home Basic 32 √√ √

Diagnostics menu 126discsDriver Recovery 146Operating System 146Disk Sanitizer 117diskette driveprecautions 50product description 4display assemblyrem

microphone cablespare part number 34model name 1modem jack, pin assignments151modem moduleproduct description 4removal 109spare part numbers 29, 109mo

Screw Kitspare part number 39SD Card Readeridentifying 16security cable slot, identifying 18Security menu 117, 126anti-theft Protection 117Automatic D

2 External component identificationTop ComponentsTouchPadComponent Description(1) TouchPad * Moves the pointer and selects or activates items on the s

LightsNOTE: Refer to the illustration that most closely matches your computer.Component Description(1) Caps lock light On: Caps lock is on.Top Compone

© Copyright 2009, 2011 Hewlett-PackardDevelopment Company, L.PBluetooth is a trademark owned by itsproprietor and used by Hewlett-PackardCompany under

Component Description(2) Power light●On: The computer is on.●Blinking: The computer is in the Suspend state.●Off: The computer is off or in Hibernatio

Buttons, switch, and speakerComponent Description(1) Speaker Produces sound.(2) Internal display switch Turns off the display if the panel lid is clos

KeysComponent Description(1) esc key Displays system information when pressed in combination with thefn key.(2) fn key Executes frequently used system

Component Description(1) esc key Displays system information when pressed in combination with thefn key.(2) fn key Executes frequently used system fun

Front componentsComponent Description(1) SD Card Reader Supports the following optional digital card formats:●MultiMediaCard (MMC)●MultiMediaCard 4.2

Component Description(4) Optical drive light (select models only) Blinking: The optical drive is being accessed.(5) Optical drive button (select model

Left-side componentsComponent Description(1) ExpressCard slot Supports optional ExpressCards.(2) Security cable slot Attaches an optional security cab

Bottom componentsComponent Description(1) Battery release latches (2) Release the battery from the battery bay.(2) Battery bay Holds the battery.Botto

Component Description(3) Vents (3) Enable airflow to cool internal components.NOTE: The computer fan starts up automatically to cook internalcomponent

Component Description(1) Webcam light (select models only) On: The webcam is in use.(2) Webcam (select models only) Records audio and video and captur

Safety warning noticeWARNING! To reduce the possibility of heat-related injuries or of overheating the computer, do notplace the computer directly on

Wireless antennas (select models only)On select computer models, at least 2 antennas send and receive signals from one or more wirelessdevices. These

Additional hardware componentsComponent Description(1) Power cord* Connects an AC adapter to an AC outlet.(2) Battery* Powers the computer when the co

3 Illustrated parts catalogService tagWhen ordering parts or requesting information, provide the computer serial number and modeldescription provided

Service tag25

Computer major components26 Chapter 3 Illustrated parts catalog

Item Description (1) Display assembly (includes microphone, 2 WLAN antenna transceivers and cables and, on select computermodels, 2 WWAN antenna tran

Item Description 33.8-cm (13.3-in) HD BrightView display assembly with LED back lighting for use incomputers with WLAN and webcam, red (1366×768 re

Item Description System board with Park XT discrete graphics and RTC battery with PM45 chipset having1066-MHz FSB (for use in APJ only)625491-001

Item Description Celeron® 900, 2.2-GHz,800 MHz FSB, 1-MB cache 534419-001 Pentium T4200, 2.0-GHz, 800 MHz FSB, 1-MB cache 513599-001 Pentium T430

Item Description ●For use in Afghanistan, Albania, Algeria, Andorra, Angola, Antigua and Barbuda,Argentina, Armenia, Aruba, Australia, Austria, Azer

iv Safety warning notice

Item Description 320-GB, 7200-rpm (replaces 614957-001) 608138-001 320-GB, 7200-rpm for use in 39.6-cm (15.6-in) computers (replaces 614955-001) 6

Display assembly componentsItem Description Spare part number(1) Display bezel Compaq 33.8-cm (13.3-in) LCD bezel without webcam 605751-001 Compaq 33

Item Description Spare part number Hinge Kit for 39.6-cm (15.6-in) computers 605769-001(3) Webcam module 611026-001(4) Display panel Display pane

Item Description Spare part number For use in Compaq 39.6-cm (15.6-in) computers 605765-001 For use in Compaq 39.6-cm (15.6-in) computers, red 62609

CablesItem Description Spare part number Cable Kit , includes: 605793-001(1) Bluetooth cable (2) RJ-11 cable (3) Main battery connector 36 Chapte

Item Description Spare part number(1) WLAN transceiver with cable spared with displayassembly(2) Microphone cable spared with displayassembly(3) LCD C

Item Description Spare part number 250-GB, 5400-rpm 493994-001 160-GB, 7200–rpm for use in 39.6-cm (15.6-in) computers (replaces 615844-001) 614522-0

Miscellaneous partsDescription Spare part numberAC adapters65-W AC adapter for use with computers with UMA graphics 613149-00190-W AC adapter for use

Sequential part number listingSpare partnumberDescription449137-001 RTC battery490371-001 Power cord for use in the United States490371-021 Power cord

Spare partnumberDescription513598-001 Intel® Core™ 2 Duo, T6570, 2.1-GHz, 800 MHz FSB, 2-MB cache513599-001 Intel® Pentium T4200, 2.0-GHz, 800 MHz FSB

Table of contents1 Product description ... 12

Spare partnumberDescription599092-002 4-GB (PC3-10600, 1333-MHz, DDR3600370-001 Broadcom 4313 802.11b/g/n (1x1) WiFi Adapter and 2070 Bluetooth 2.1 an

Spare partnumberDescription605774-001 Top cover for Compaq 33.8-cm (13.3-in) computers605775-001 Top cover for HP 35.6-cm (14.0-in) computers605776-00

Spare partnumberDescription605803-001 39.6-cm (15.6-in) HD BrightView display assembly for use in computers without webcam (1366×768resolution)605804-

Spare partnumberDescription605813-261 Keyboard for 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computers for use in Bulgaria605813-281 Keyboard for 35.6-c

Spare partnumberDescription605814-261 Keyboard for 39.6-cm (15.6-in) computers for use in Bulgaria605814-281 Keyboard for 39.6-cm (15.6-in) computers

Spare partnumberDescription611026-001 Webcam611027-001 250-GB, 7200-rpm hard drive for use in computers with 39.6-cm (15.6-in) displays611028-001 320-

Spare partnumberDescription652166-001 160-GB, 7200-rpm hard drive652168-001 Hard drive hardware kit for use with 33.8-cm (13.3-in) and 39.6-cm (14.0-i

4 Removal and replacementproceduresPreliminary replacement requirementsTools requiredYou will need the following tools to complete the removal and rep

Cables and connectorsCAUTION: When servicing the computer, be sure that cables are placed in their proper locationsduring the reassembly process. Impr

Grounding guidelinesElectrostatic discharge damageElectronic components are sensitive to electrostatic discharge (ESD). Circuitry design and structure

Cables and connectors ... 50Drive handling ...

Packaging and transporting guidelinesFollow these grounding guidelines when packaging and transporting equipment:●To avoid hand contact, transport pro

Equipment guidelinesGrounding equipment must include either a wrist strap or a foot strap at a grounded workstation.●When seated, wear a wrist strap c

Component replacement proceduresThis section provides removal and replacement procedures.There are many screws, in many different sizes, that must be

Computer feetThe computer feet are adhesive-backed rubber pads. The feet are included in the Rubber Kit, spare partnumber 605789-001 for 33.8-cm (13.3

BatteryDescription Spare part number9-cell, 93-Wh, 2.8-Ah Li-on battery 593573-0016-cell, 47-Wh, 2.2-Ah Li-on battery 593572-001Before disassembling t

Before removing the service door follow these steps:1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn t

2.Slide the service door (2) away from the computer.Reverse this procedure to install the switch cover.58 Chapter 4 Removal and replacement procedur

Hard driveNOTE: The hard drive spare part kit includes a hard drive bracket.Description Spare part number500-GB, 7200-rpm hard drive (replaces 614958-

4.Remove the hard drive (4) from the hard drive bay.Remove the hard drive from a 35.6-cm (14-in) or 33.8-cm (13.3-in) computer:1. Position the compute

To remove the hard drive bracket, follow these steps:1. If it is necessary to replace the hard drive bracket, remove the two Phillips PM3.0×4.0 hard d

Security menu ... 117System Configuration menu ...

For a 35.6-cm (14-in) or 33.8-cm (13.3-in) computer, attach 1 piece of the 90× 8×0.5 mm rubberbumper from spares kit 652168-001 to the outside of the

After the rubber or foam bumpers have been attached, reverse the removal procedure to install thehard drive.Component replacement procedures63

Memory moduleNOTE: When adding a second memory module, be sure it is the same type and speed as theinstalled memory module.Description Spare part numb

3.Remove the memory module (2) by pulling the module away from the slot at an angle.NOTE: Memory modules are designed with a notch to prevent incorrec

WLAN moduleDescription Spare part numberBroadcom 4312 802.11b/g WLAN modules●For use in Antigua and Barbuda, Barbados, Belize, Canada, the Cayman Isla

Description Spare part numberAtheros 9285G 802.11 b/g/n WiFi Adapter for use in all countries and regions 605560-005Realtek RTL8191SE802.11 b/g/n WiFi

Optical driveNOTE: All optical drive spare part kits include an optical drive bezel.Description Spare part numberDVD±RW Double-Layer Drive with LightS

6.Remove the two Phillips PM2.0×2.0 screws (1) that secure the optical drive bracket to the opticaldrive.7. Remove the optical drive bracket (2).Rever

3.Remove the Phillips PM2.0×3.0 screw (2) that secures the fan, and then remove the fan (3).Reverse this procedure to install the fan.Heat sinkNOTE: T

3.Raise the end of the heat sink (3) to free it from the system board components and then removethe heat sink (4) from the system board.Remove the hea

Recovering your information ... 146Recovering the operating system and programs ...

Description Spare part numberIntel Celeron T1600, 1.66-GHz 532324-001Intel Celeron T1700, 1.83-GHz 534084-001Intel Celeron T3000, 1.8–GHz 572926-001In

3.Lift the processor (2) straight up and remove it.NOTE: When you install the processor, the gold triangle (3) on the processor must be alignedwith th

Before removing the palm rest, follow these steps:1. Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn the

4.Release the ZIF connector (1) to which the TouchPad cable is connected, and then disconnect thecable (2) from the system board.5.Remove the palm res

3.Turn the computer over, rotate the palm rest up (1) and slide the palm rest to the right (2) torelease it from the computer.4. Release the ZIF conne

3.Remove the single screw (1) that secures the TouchPad board to the palm rest and lift theTouchPad board (2) from the palm rest.Reverse this procedur

KeyboardDescription Spare part numberKeyboards for use in computers with 39.6-cm (15.6-in) displays 605813-xx1Keyboards for use in computers with 35.6

3.Turn the unit over, lift the top edge of the keyboard (1) and slide it (2) towards the display.4. Rest the keyboard on its edge and slide the keyboa

2.Remove two Phillips PM2.5×3.0 broadhead black screws (1), one Phillips PM2.5×3.0 broadheadsilver screw (2), and two Torx M2.5×6.0 screws (3) that se

4.Rest the keyboard on its edge and slide the keyboard back toward the display then, release theZIF connector (1) to which the keyboard cable is attac

1 Product descriptionCategory Description UMAgraphics,GL40 chipsetUMAgraphics,GM45 chipsetDiscretegraphics,PM45chipsetProduct Name Compaq 320 Notebook

Top coverDescription Spare part numberTop cover for use in Compaq brand computers with 39.6-cm (15.6-in) displays 605778-001Top cover for use in Compa

Remove the top cover on a 39.6-cm (15.6-in) computer:1.With the display panel in the open position, press in (1) of the ExpressCard to release it and

4.Turn the computer over so it is right-side up and remove four Torx M2.5×6.0 screws.5. Release the ZIF connector (1) and remove the power switch cabl

6.Rotate the top cover up (1) and remove it from the base enclosure (2).Remove the top cover on a 35.6-cm (14.0-in) and 33.8-cm (13.3-in) computer:1.

3.Remove the two Phillips PM2.0×2.0 screws (1) located in the battery bay, four Torx M2.5×6.0screws (2), (3), and (4), and the two Phillips PM2.0×3.0

5.Release the ZIF connector (1) and disconnect the power switch cable (2).6. Rotate the top cover up (1) and off the base enclosure (2).Reverse this p

3.Disconnect the power from the computer by first unplugging the power cord from the AC outletand then unplugging the AC adapter from the computer.4.

Bluetooth moduleNOTE: The Bluetooth module spare part number is 537921-002 and is used in all countries andregions except Japan and Asia Pacific count

2.Disconnect the Bluetooth cable (1) from the system board and remove the antenna (2) from thebase enclosure. The antenna is held to the base enclosur

3.Remove the Torx M2.5×6.0 screw (3) then, lift the USB connector assembly (4) from the baseenclosure.Remove the USB connector assembly on 35.6-cm (14