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NEC VERSA 2400 - SERVICE, Service Manual

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NEC VERSA 2400 - SERVICE Service Manual Download Page 76

4-8      Field Service Guidelines

 You do not need to remove this part if you are removing/replacing the LCD.

Removing/Replacing the Cover-Display LCD Assembly Module

The procedure for removing the Cover-Display LCD Assembly Module is as follows:

1. 

Turn off the computer. Follow all disassembly procedures for removing the Hinge
Covers, Status Bar Cover, and Keyboard as mentioned earlier in this section.

2. 

Remove the center screw on both hinge mounts, the grounding screw to the left
of the connector on the LED Board assembly, and remove the connector from the
LED board.

3. 

Lift the Cover-Display LCD Assembly Module from off of the unit and set aside.

4. 

To remount the Cover-Display LCD Assembly Module, reverse the disassembly
procedure mentioned above.

Removing/Replacing the System Top Cover Assembly and the NEC
VersaGlide Assembly

The procedure for removing and replacing the system top cover assembly and VersaGlide is
as follows:

 NOTE: If you plan to continue remov-
ing/replacing modules from the notebook you
must follow all of the disassembly procedures
mentioned from the start of this section.

1. 

Turn off the computer and remove the Battery, Hard Disk Drive, and Floppy Disk
Drive Modules. Follow all disassembly procedures mentioned from the start of
this section.

2. 

Turn the System Unit upside down with the bottom facing up. Remove the nine
screws securing the base unit assembly from the top unit assembly.

3. 

Return the back to the normal position. Remove the screw located between the
hinges above the LEDs. Next remove the screw located just under the speaker on
the left side, the screw just to the right of the LEDs and the screw located to the
right of the LCD cable connector. Lift the top cover from the base cover. Note,
that the LCD, speaker, and the VersaGlide cables are all still attached to the sys-
tem board. Pull these cables out and remove the whole top cover assembly.

4. 

The VersaGlide module is assembled to the system top cover case. Turn the top
cover case over and locate the VersaGlide printed circuit board. Remove the six
screws securing the module and remove the VersaGlide assembly.

Summary of Contents for VERSA 2400 - SERVICE

Page 1: ...ent are warranted in accordance with the terms of the Warranty Statement accompanying each product However actual performance of each such product is dependent upon factors such as system configuration customer data and operator control Since implementation by customers of each product may vary the suitability of specific product configurations and applications must be determined by the customer a...

Page 2: ...ware and interface compo nents Section 2 General Specifications lists system specifications including dimensions weight environment safety compliance and power consumption Section 3 Hardware Functional Overview defines major system functions and subsys tems Section 4 Field Service Guidelines provides system disassembly procedures and an exploded view diagram with corresponding part numbers Section...

Page 3: ...t Compartment 1 7 The Right Side Of the Notebook 1 8 Built in Floppy Disk Drive 1 8 PCMCIA Slot Compartment 1 8 Hard Disk Drive Compartment 1 9 Front of the Notebook 1 9 Battery Compartment 1 9 Left Side of the Notebook 1 10 DC IN Connector Jack 1 10 Hardware Reset Switch 1 10 The Rear of the Notebook 1 11 External Keyboard and PS 2 Mouse Port 1 11 VGA Port 1 12 Printer Port 1 13 Serial Port COM 1...

Page 4: ...oard 2 10 LCD Inverter Board 2 12 LED Status Indicators 2 13 FDD Specification 2 13 HDD Unit Specification 2 14 NiMH Battery Pack Specification 2 14 DC DC Converter Battery Charger Specification 2 15 Battery Charger 2 15 Keyboard 2 16 AC DC Adapter 2 16 BIOS 2 17 Micro Controller Function Description 2 18 Power Management Features Mode Definition 2 19 Power Management Features Mode Transition 2 20...

Page 5: ...ystem 3 10 Power Subsystem 3 10 AC Power Adapter 3 11 Internal Battery Pack 3 11 Powerboard 3 11 LCD Inverter Board Assembly 3 11 Section 4 Field Service Guidelines Preventive Maintenance 4 1 Cleaning the Notebook s Exterior 4 1 Cleaning the Notebook s Interior 4 2 Protecting the Disk Drives 4 2 Handling the Computer Battery Packs 4 2 Maintaining the LCD Quality 4 3 Required Tools and Equipment 4 ...

Page 6: ... Illustrated Parts Breakdown 4 13 Packaging and Documentation 4 16 Section 5 Troubleshooting and Repair Service Information 5 1 Technical Support 5 1 Product Information 5 2 Ordering Information from FastFacts 5 2 Helpful Starters 5 3 Power On Self Test POST 5 4 POST Messages 5 4 Informational Messages 5 7 Run time Error Messages 5 8 Quick Troubleshooting 5 9 Appendix A Video Modes List of Figures...

Page 7: ...ssembly 4 11 4 6 Power Board Module Assembly 4 12 4 7 NEC Versa 2400 Series Illustrated Parts Breakdown 4 15 List of Tables 1 1 Model Configurations 1 1 1 2 Feature Highlights 1 2 1 3 Fn Key Combination Summary 1 6 1 4 Boot Main Setup Menu 1 16 1 5 Boot Setup Peripherals Menu 1 17 1 6 Boot Setup Security Menu 1 17 1 7 Boot Setup Power Savings Menu 1 18 1 8 8 MB Memory Configurations 1 20 1 9 16 MB...

Page 8: ...er Specifications 2 22 2 25 Vibration Specifications 2 22 2 26 Shock Specifications 2 23 2 27 Electro static Discharge ESD Specifications 2 23 4 1 NEC Versa 2400 Series Field Replaceable Parts 4 13 4 2 Packaging and Documentation Part Numbers 4 16 5 1 NEC Service and Information Telephone Numbers 5 1 5 2 POST Error Messages 5 4 5 2 POST Error Messages 5 5 5 3 BIOS Informational Messages 5 7 5 4 Ru...

Page 9: ... MB Video Memory Only A 4 A 10 VGA Extended Modes 24 Bit Linear Mode A 4 A 11 VGA Extended Modes Planar Mode A 4 A 12 VGA Extended Modes Packed Pixel Mode A 4 A 13 VGA High Refresh Modes Packed Pixel Mode A 5 A 14 VGA High Refresh Modes Planar Mode A 5 A 15 VGA High Refresh Modes Packed Pixel Mode A 5 ...

Page 10: ...ons However there is no guarantee that interference will not occur in a particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separa...

Page 11: ...nowledge DC direct current DIP dual in line package DLAB Divisor Latch Address bit DMA direct memory access DMAC DMA controller DOS disk operating system DRAM dynamic RAM DTE data terminal equipment ECC error checking and correction EDS error detecting system EGA Enhanced Graphics Adapter EMS Expanded Memory Specification EPP enhanced parallel port EPROM erasable and programmable ROM EVGA Enhanced...

Page 12: ...tional Service Response Center PAL programmable array logic PC personal computer PCB printed circuit board PFP plastic flat package PIO parallel input output pixel picture element PJQFP plastic J lead quad flat pack PLCC plastic lead chip carrier PLL phase lock loop p p peak to peak PPI programmable peripheral interface PROM programmable ROM QFP quad flat pack RAM random access memory RAMDAC RAM d...

Page 13: ...ansmitter V volt Vdc volts direct current VESA video electronics standards association VFO variable frequency oscillator VGA Video Graphics Array VLSI very large scale integration VRAM virtual RAM W watt µf microfarad µPD microprocessor µs microsecond Ω ohm ...

Page 14: ...M compatible The NEC Versa 2400 Notebook Series comes in the following model configurations Table 1 1 Model Configurations Configuration NEC Versa 240X NEC Versa 240XCD NEC Versa 243XCD CPU Intel P54CSLM 100 Intel P54CSLM 100 Intel P54CSLM 133 On Board DRAM 8 MB 8 MB 16 MB Video Memory 1 MB 1 MB 1 MB Hard Disk Drive 810 MB 1 GB 1 GB Color LCD 11 3 DSTN LCD 11 3 DSTN LCD 11 3 DSTN LCD Battery Pack ...

Page 15: ...ls resolution for external CRT monitor with 256 colors HDD Built in 2 5 inch IDE high capacity hard drive 12 7mm height FDD Built in 3 5 inch 1 44MB floppy disk drive Keyboard Built in 87 88 key keyboard with 12 programmable function keys embedded numeric keypad and special function control keys dedicated screen control keys and inverted T cursor keys IBM enhanced 101 102 key compatible keyboard P...

Page 16: ...Board Upgradable to 4 8 M B Color LCD 800x600 D S T N VL Bus Controller VGA Glide Pad Pointing Device Serial Interface RS 232C Parallel Interface Bank 1 Slot 1 4 8 16MB D I M M Built in HDD PCMCIA Card Slot x 2 PS 2 Keyboard Keyboard PS 2 Mouse RS 232C Peripheral Printer 3 5 FDD Battery Pack External VGA Monitor and PCMCIA Card Figure 1 2 System Configuration Diagram ...

Page 17: ... when it has not been used for a predetermined amount of time You can adjust the brightness and contrast level of the LCD by pressing the Fn key lower left corner and the desired brightness or contrast keys lower right corner at the same time Power Switch LCD Cover Switch The power switch button when pressed turns on the notebook s power Press it again to turn computer power off Whenever the noteb...

Page 18: ...s being accessed whether an operation is being done or if a certain mode is or has been activated Keyboard The notebook has a built in 87 88 key keyboard that provides complete emulation of a full sized IBM AT enhanced keyboard with function keys and screen cursor control keys Figure 1 3 Standard Keyboard Layout The notebook keyboard includes an embedded numeric keypad and some special function ke...

Page 19: ...e the contrast level Fn key Up key This key combination increase the brightness incrementally for the LCD Fn key Down key This key combination decreases the brightness incrementally for the LCD Fn key PgUp key This key combination increases the speaker volume level incremen tally Fn key PgDn key This key combination decreases the speaker volume level incremen tally The notebook s keyboard also fea...

Page 20: ...he pointer on the screen is done by moving your finger over the surface and directing the pointer where you want it to go The VersaGlide is compatible with the standard PS 2 mouse and can be activated using the normal DOS or Windows IBM or PS 2 mouse driver Figure 1 4 VersaGlide Memory Slot Compartment The memory compartment is located just under the keyboard Inside the compartment are two extra m...

Page 21: ...pport two PCMCIA Type II devices or one Type III device Open the compartment door to view the PCMCIA slots In sert Type III cards into the lower slot Insert the card with the pin sockets facing towards the drive and the label facing up To remove the PCMCIA card push on the eject button to release the pin connections and slowly pull out the card The NEC Versa 2400 Series also comes with DOS Windows...

Page 22: ...es the recharge able NiMH battery pack The battery pack begins charging whenever you connect the AC adapter to the notebook It is very important to always have the battery installed on the notebook to have it always charged Leaving the battery pack out of the unit for a long pe riod of time will completely drain the battery cells To remove the battery pack from the compartment unit push the batter...

Page 23: ...u connect the AC power cord and into the power outlet It is important to have the AC adapter con nected to the notebook to recharge the battery and keep the notebook working continu ously NOTE Use only the AC adapter that comes with the NEC Versa 2400 notebook Figure 1 9 Connecting the AC Adapter to the Notebook Hardware Reset Switch To the right of the AC adapter connector jack you will notice a ...

Page 24: ...can be used simultaneously The NEC Versa 2400 also provides a Y connector adapter allowing simultaneous use of an external AT enhanced keyboard and a PS 2 mouse When the external PS 2 mouse is con nected using the Y connector the built in VersaGlide is disabled Figure 1 11 Connecting External Keyboard and PS 2 Mouse NOTE When connecting an external PS 2 mouse it is required that you power off the ...

Page 25: ...and 2430 The NEC Versa 2400 series provides a VGA VESA driver diskette for installing different display resolution drivers for Windows Setup You can also toggle the display between the LCD and the external monitor by pressing the Fn key F10 key combination NOTE Even when set to 800x600 or 1024x768 resolution the external monitor will only show 800x600 resolution if the computer is running at Simul...

Page 26: ... the configuration of the parallel port to Standard or Bi directional Figure 1 13 Connecting to the Printer Port Serial Port COM 1 The 9 pin serial port provides a serial interface for a RS 232C device such as external serial modem This port is commonly referred to as COM1 Figure 1 14 Connecting to the Serial Port NOTE First power off the system before con necting an external serial device After t...

Page 27: ... cover with your finger nail to open this cover Inside is the ROM chip It is not neccessary to remove this cover while performing normal service operations SYSTEM BIOS SETUP PROGRAM This section provides the outline features and operation of the Phoenix BIOS Setup pro gram used in the NEC Versa 2400 Series The BIOS Basic Input Output System Setup program allows you to change the system configurati...

Page 28: ...ebar and keys to change the settings To exit the BIOS Setup program simply press the Esc key and select from the pop up window whether you want to load the default values for all fields save your changes and exit or exit without saving any changes THE BOOT SETUP MENU The boot setup menu allows you to change the following configurations Figure 1 15 The Bootup Setting Menu The boot setup menus let y...

Page 29: ...f the drive being used Base Memory This field reports the amount of base or conventional memory found by the BIOS during its POST The value should not exceed or go below 640KB Extended Memory This field reports the amount of extended memory found by the BIOS during POST The value displayed is the amount of the memory address map Because all models in the NEC Versa 2400 series have a minimum of 8MB...

Page 30: ...ord This option allows you to limit access to the computer through the use of a password If you select this option a pop up win dow will appear asking you to set or change the password A password can be up to seven characters in length and is cleared by eliminating the password with the F1 key Note If you forget the password of the computer the only way to access the system again is to discharge t...

Page 31: ... ports floppy drive and hard drive into a power saving mode Possible values include Disabled 1 2 4 8 or 16 minutes Auto Suspend Time out This option allows you to specify the length of time the system will be in the Standby Mode before entering the SUSPEND Mode Possible values include Disabled 1 2 4 8 or 16 minutes SUSPEND Mode This option allows you to enable SUSPEND Mode Select Save to File the ...

Page 32: ...llows you to effectively program the type of event which occurs when the display panel is closed Select SUSPEND the computer enters the SUSPEND Mode when the LCD Panel is closed Select Backlight Off the system will power down the LCD when the LCD Panel is closed Serial Port Ring Re sume This option allows you to resume the system if an incoming call is received from the serial port modem Select Of...

Page 33: ... the computer and remove the AC adapter and battery pack 2 Remove the hinge covers status bar cover and the keyboard from the top of the unit and locate the memory expansion sockets 3 Remove the extra DIMM module from its anti static wrapping 4 Hold the memory module with its golden teeth connector pointed towards the memory socket Incline the module at 60 degreesand gently attached it to the memo...

Page 34: ...tility program called PHLASH COM PLATFORM BIN Update the system BIOS whenever you are up grading the LCD Panel or adding modifications to the computer s hardware function To upgrade the System BIOS 1 Copy the PHLASH COM PLATFORM BIN BIOS utility program and the BIOS ROM file to the hard disk subdirectory You can also choose to run the program from the floppy diskette 2 Disable EMM386 or other memo...

Page 35: ...um P54CSLM 133MHz TCP Package System RAM 8MB On board Upgradeable to 40 MB on 240X model or 48 on 243X model Memory Modules 8MB 16MB 24MB 32MB RAM Module Slot Two Slots System Management 2M 256K x 8 Flash BIOS Includes System and VGA Shadow BIOS Capability Power Management Operation Modes Full On Mode Doze Mode Standby Mode 5V Suspend Mode 0 volt Suspend Mode Peripheral Automatic Power Down Cover ...

Page 36: ...4MB Mode Support Overseas version Display 11 3 DSTN Color LCD Module 800 x 600 in 256 colors External CRT Capability 640 x 480 in 64K colors 800 x 600 in 64K colors 1024 x 768 in 256 colors LCD CRT Display Simultaneously 32 bit PCI Bus LCD CRT Auto Sense 32 bit Graphics Engine Video RAM 1MB as Standard 5V EDO 60NS DRAM 40 Pin SOJ PCMCIA Slots Two Type II slots or one Type III slot PCMCIA Socket co...

Page 37: ...ghtness Up Fn Down Brightness Down Fn PgDn Decrease Speaker Volume Fn PgUp Increase Speaker Volume Fn F10 CRT LCD Simul Fn F11 Backlight On Off I O Port 25 pin Parallel Port 9 pin Serial Port 15 pin VGA Monitor Port External Keyboard or PS 2 Mouse Port NEC Y Cable Support DC IN Jack IR Port Port Replicator Support GAME port TV out External Keyboard External PS 2 Mouse Serial Port COM1 Printer Port...

Page 38: ...Suspend Mode Blanking Internal LED Battery Charge PCMCIA A B Slot Read Write HDD FDD CDROM Read Write PMU Enable Num Lock Enable Caps Lock Enable Scroll Lock Enable Power Supply AC Adapter AC 100V to 240V 47 63Hz 36W Max Constant Power Output Dimensions 120 L x 60 W x 36 H mm Battery Input Battery A 10 long A size 3500mA hr Ni MH Battery Cells 12V Total 42W Battery Fast Charge Single Battery Pack ...

Page 39: ...shi M38813M4 Glide Pad TM1002S D Synaptics Battery Sanyo Ni MH 1 2V LA HR 4 3 Audio Amplifier ROHM BA7786FP Micro Controller Micro Chip PIC16C62 Clock Generator ICS AV9154 43 Buffer NS CGS74CT2524 CGS74CT2525 Core Logic UMC 8891BF N UMC 8892BF N UMC 8886BF N VGA Chip C T 65548 Super I O NS PC87336VLJ PCMCIA Controller Omega 82C094 Decoder Omega OM82C28 Power Switch Micreel MIC2563 1 BIOS Phoenix I...

Page 40: ... 3 DSTN LCD 11 3 DSTN LCD FDD Removable Removable Removable CD ROM None 6X 6X Battery Pack Type A 3500mAH NiMH Type A 3500mAH NiMH Type A 3500mAH NiMH Pointing Device Glide Pad Glide Pad Glide Pad PCMCIA 2 x Type II 1 x Type III 2 x Type II 1 x Type III 2 x Type II 1 x Type III Keyboard 87 88 Keyboard Win95 87 88 Keyboard Win95 87 88 Keyboard Win95 EPP ECP Parallel Yes Yes Yes Serial Port Yes Yes ...

Page 41: ... RAM 256K x 16 bit DRAM 5V 60ns SOJ x 2 System Chipset UMC UM8891BN 208 Pin PQFP UMC UM8892BN 208 Pin PQFP VGA C T 65548 208 Pin PQFP PCMCIA Omega 82C094 208 Pin TQFP Omega 82C028 28 Pin SOIC Internal Connector Socket To System PCB 100 Pin AMP To HDD 50 Pin KEL To CDROM 40 Pin KEL 2 Pin Molex To Transfer PCB 2 Pin Molex To DC Converter 32 Pin Suyin External Connector COM1 9 Pin Suyin Printer 25 Pi...

Page 42: ...FDD 100 Pin AMP To second battery 100Pin AMP PCB Thickness 1 2mm Layers 4 CONVERTER BOARD SPECIFICATIONS The following table lists Converter board specifications Table 2 5 Converter Board Specifications ITEM SPECIFICATION Internal Connector To I O PCB 32 Pin Suyin To 1 st Battery 10 Pin Suyin External Connector To Y Cable Connector 32 Pin Suyin To AC Adapter 2 Pin PCB Thickness 1 2mm Layers 6 ...

Page 43: ... Specifications ITEM SPECIFICATION Internal Connector To System PCB 50 Pin Suyin To System PCB 40 Pin Suyin To LCD Panel 50 Pin KEL To Inverter 8 Pin Molex To Left Speaker 2 Pin Molex To Right Speaker 2 Pin Molex External Connector To Headphone 5 Pin Suyin To Line In 5 Pin Suyin To LCD Panel 41 Pin KEL To IR 8 Pin Temic To USB 4 Pin AMP ...

Page 44: ...32 768KHz DIP Type Crystal 4MHz DIP Type Generator AV9154 43 SOP 16 Pin ROM Flash ROM for BIOS 256K x 8 150ns System Chip Set UMC UM8886BN 208 Pin PQFP Super I O NS87336 100 Pin PQFP Keyboard Controller Mitsubishi 38813M4 64 Pin QFP Micro Controller PIC16C62 28 Pin SOIC RCT Battery VARTA 60mA 3 6V NiMH Battery Audio ES17888 Sound Chip 100 Pin PQFP Amplifier ROHM BA77786FS 25 Pin SOIC ...

Page 45: ...ctor To System PCB 100 Pin AMP To System PCB 100 Pin AMP To HDD Unit 50 Pin KEL To CD ROM Unit 40 Pin KEL To RTC Battery 2 Pin Molex To Transfer PCB 40 Pin Suyin To DC Converter 32 Pin Suyin External Connector COM1 9 Pin Suyin Printer 25 Pin Suyin Docking 160 Pin Berg PCB Thickness 1 2 mm Layers 6 ...

Page 46: ... Inverter Board Specifications ITEM Specification Color Inverter Hitachi 11 3 DSTN LMG9910ZWCC Input Voltage 8V to 20V Output Voltage 500VAC Max Contrast Voltage 28V 31V Output Load Current 6mA Max Brightness Control VR Type Lower Contrast Control VR Type Upper Efficiency 70 Min Unit Size L x W x H 146 L x 22 5 W x 9 5 H ...

Page 47: ... that the battery is charging Table 2 9 Status LED Descriptions ITEM LED PMU Enabled HDD Read Write PCMCIA Slots Num Lock Caps Lock Scroll Lock FDD SPECIFICATION The following table lists the standard diskette drive specifications Table 2 10 FDD Specifications ITEM Specification Module 3 5 Module Mode 2 Mode FDD 1 44MB 720KB Unit Size 110mm L x 96mm W x 12 7mm H ...

Page 48: ... W x 12 7mm H CD ROM SPECIFICATION The following table lists the standard CD ROM reader specifications Table 2 12 CD ROM Reader Specifications ITEM SPECIFICATION Module 6X CD ROM Mode IDE Interface Data Transfer 13 3MB sec Unit Size 140 5mm L X 130 6mm W X 17 0mm H NIMH BATTERY PACK SPECIFICATION The following table lists the standard battery specifications Table 2 13 Battery Specifications ITEM S...

Page 49: ...tion Short Circuit Protection OCP Input under voltage latch Efficiency 80 Min Typ PCB 1 2mm 6 Layers BATTERY CHARGER The following table lists battery charger specifications Table 2 15 Battery Charger Specifications ITEM SPECIFICATION Input Voltage 20V Max Support Battery NiMH Battery 12V Protection Max Temp Max Timer Charge Method Delta T Delta t 1 o C min Max Temperature 53 o C 60 o C Timer Sett...

Page 50: ...Pitch 19 05mm AC DC ADAPTER The following table lists AC DC adapter specifications Table 2 17 AC DC Adapter Specifications ITEM SPECIFICATION Input Voltage AC 90V 265V 50 63Hz Ripple Noise 100mvp P Output Voltage 20V Max Protection Short Circuit UVP OVP AC Cord Safety Approval FCC Shielding AC cord DC Output Cable 2 pin 100cm long with coil at system end Indicator AC Power On Unit Size 120mm L x 6...

Page 51: ...ction on Setup Menu Support for IR communication port Parallel Port Support EPP ECP and Standard Printer Port Address Provide Optional Item in Parallel Port on Setup Menu Shadow Cache Always enable VGA and System BIOS Shadow PCMCIA Phoenix PCM Plus will be provided PCMCIA 2 1 Spec Compliance External Device Support Interface of external PS 2 mouse and external keyboard The internal Glide Pad will ...

Page 52: ... 87 Keys European Keyboard 88 Keys Support WIN95 extra 3 Keys External Device Support Internal and External Keyboard can be used simultaneously Internal Glide Pad and External PS 2 Mouse can be used Simultaneously Y Connector Support External PS 2 Mouse and External Keyboard can be used LED Connector Num Lock Caps Lock Scroll Lock Status should be kept during Suspend Process All the above should b...

Page 53: ...DD Com1 Com2 Lpt2 Audio Standby Mode Timer CPU State DRAM State VGA State Audio State AMP Circuit HDD State LCD state Activity Events Off 1 2 4 8 16 Min Stop Clock Slow Refresh Standby Power Down Power Down Power Down Backlight Off Negative Volt Off Video Monitoring Keystrokes FDD HDD Com1 Com2 Lpt1 Audio Suspend To RAM Timer CPU State DRAM State LCD State VGA HDD I O Chip PCMCIA Audio AMP Circuit...

Page 54: ... Off Off POWER MANAGEMENT FEATURES MODE TRANSITION The following table lists power management transition modes Table 2 21 Mode Definitions FROM TO FULLY ON DOZE SLEEP SUSPEND Fully On X 1 X 2 Doze 3 X 4 5 Sleep 6 X X 7 Suspend 8 X X X O current Condition 1 Doze Mode Time Out 2 APM CPU Idle 3 APM Power Management Event System Suspend Request Notification 4 Battery Low Low Condition 5 Suspend Events...

Page 55: ...F10 LCD CRT SIMUL Display Fn F11 Panel Backlight On Off Fn F8 Sound Mute Fn right Contrast Up Fn left Contrast Down Fn PgUp Speaker Volume Increases Fn PgDn Speaker Volume Decreases Fn up Brightness Increases Fn down Brightness Decreases Num Numeric Lock ENVIRONMENTAL SPECIFICATION The following table lists appropriate operating temperatures Table 2 23 Environmental Specifications ITEM SPECIFICATI...

Page 56: ...uency 50 60 Hz 47 63 Hz VIBRATION The following table lists vibration specifications Table 2 25 Vibration Specifications ITEM MODE Operating Mode Direction of Movement X Y Z Axis Vibration Level 5 500 5 Hz 0 5 Gs Acceleration Duration Time 60 min for each axis Non Operating Direction of Movement X Y Z Axis Vibration Level 5 500 5 Hz 2 Gs Acceleration Duration Time 60 min for each axis ...

Page 57: ... 6 faces Direction of movement 6 Faces Non Operating Mode Impact Accelerator 10g 20g 30g 40g 50g Based on Half Sine Wave Shock Pulses of 11Msec Number of Shock 3 Shocks for each of the 6 faces Direction of Movement 6 Faces ELECTRO STATIC DISCHARGE ESD The following table lists static discharge specifications Table 2 27 Electro static Discharge Specifications ITEM SPECIFICATION Contact Discharge 2 ...

Page 58: ...D display panel I O subsystem implemented on the I O board keyboard subsystem implemented on part of the system board and keyboard as sembly PCMCIA controller and sockets implemented on the system board pointing device subsystem implemented on the I O board and keyboard assembly hard disk subsystem implemented on the system board and the hard drive as sembly floppy disk subsystem implemented on th...

Page 59: ... UM8891BF N UM8892BF N UM8886BF N VGA CHIP C T 65548 CRT ON LCM INVERTER FLASH BIOS 256KB PCMCIA OMEGA 82C094 KB CONTROLLER MITSUBISHI M38813M4 SUPER I O NS PC87336VLJ GLIDE PAD EXT KB MOUSE INTERNAL KB CARD 1 CARD 0 FDD HDD PRINTER CLOCK GEN ICS AV9154 43 AC ADAPTER DC DC CONVERTER 14 318MHz 24MHz 66MHz 14 318MHz X TAL BATTERY IN 3 45V 5V 12V DC IN VIDEO RAM 1MB COM1 Figure 3 1 Functional Block D...

Page 60: ...e system processor function for the notebook is implemented on the system board using an Intel P54LM 100MHz Processor Chip The processor operates in conjunction with the RAM and ROM memory plus other system control logic e g UMC 8486F to process software instructions BIOS Windows applications The Intel P54CSLM microprocessor is a high performance 586 class CPU which is com patible with all the pop...

Page 61: ... and cache units SYSTEM LOGIC CONTROLLER The System Logic Controller function for the notebook is implemented on the system board using UMC 8890 Series Notebook Chipset The UM8890 is an advanced 586 compatible single chip specially designed for notebook computers and other portable computers Aside from supporting almost all 586 based CPUs the UM8890 also integrates PMU System Controller RTC and Pe...

Page 62: ...upports 512KBx8 1Mx4 1Mx16 2Mx8 and 4Mx4 type DRAM Supports 8 or 16 bit ROM configuration Programmable DRAM timing for each bank Power Management Supports up to Ten Programmable PMC Outputs Supports Multiple Power Saving Mode All Register Read Writeable for 0V SUSPEND Microsoft APM Compatible Supports 0V SUSPEND Demand Driven Clock Control Supports RESUME SUSPEND Key Auto Wake Up Function Three Lo...

Page 63: ... BIOS capability I O SUBSYSTEM The I O Subsystem of the notebook is implemented on the I O Board using the NS PC87336VLJ chipset The supported I O interface on the notebook includes the internal hard disk drive interface the internal floppy disk drive interface the external printer port interface the external serial port and the external PS 2 keyboard and mouse ports Feature s summary of the NC873...

Page 64: ...uses up to 32 bits in width When combined with the CHIPS advanced linear acceleration software driver technology this device exhibits exceptional performance compared with devices of similar architecture The 65548 also adds a sophisticated 32 bit graphics hardware engine for the Bit Block Transfer BITBLT line drawing hardware cursor and other functions intensively used in Graphical User Interface ...

Page 65: ...notebooks provide a 15 pin female D type external VGA con nector that can be connected to an external video graphics adapter VGA type monitor Another feature of the notebook computer is the ability to auto sense the display output to both LCD and the external CRT monitor The notebook provides external resolution of 1024x768 by 256 colors for the NEC Versa 2400 series with 1MB video memory The NEC ...

Page 66: ...t includes Individual Socket power control Hot insertion removal Hardware Software controlled power down Modem Ring in Resume CS Controlled Power Down and Power Saving with Windows inactivity Direct connection to 33MHz PCI bus and to PCMCIA sockets without glue logic Serial Power Control to support the designs with most PCMCIA power switch IC Legacy DMA and serial IRQ to directly support advanced ...

Page 67: ... when the HDD LED is activated This protects the hard disk drive from any accidental damage or loss of data FLOPPY DISK DRIVE SUBSYSTEM The Floppy Disk Drive Subsystem consists of a FDD controller provided by SMC 37C665IR and the built in floppy disk drive The floppy disk drive supports standard 3 5 inch 720KB and 1 44MB mini diskettes POINTING DEVICE SUBSYSTEM The pointing device subsystem consis...

Page 68: ...to re charge whenever the AC adapter is connected to the notebook Normal charging time for the battery pack is around 1 5 hours when the computer is turned off while it should take around 6 hours maximum when the computer is running Power Board The power board receives approximately 12VDC from the battery pack and uses this input voltage to generate 12V 5V 3 3V 3 45V regulated output voltages to p...

Page 69: ...stem unit and LCD even after the system has been turned off Cleaning the Notebook s Exterior Use the steps described below to clean the outer surface of the system 1 Power off the system remove the primary battery pack and unplug all cables connected to the system 2 Wipe the outside of the system unit keyboard and display with a soft clean cloth Remove any stains with water only Use glass cleaner ...

Page 70: ...Periodically back up the data files from the hard disk Run a virus detection program to identify possible viruses on the hard disk Use SCANDISK to correct any errors found in the directory and File Allocation Table FAT This will also free up space from any unused sectors Never turn the computer off when the hard disk is being accessed Never move or raise the computer while the hard disk is being a...

Page 71: ...the cover but the display surface no matter what type it is and the components inside the computer radiate heat So when you close the cover you will then trap this heat up against the screen Leaving the computer cover open for about ten minutes while the heat disperses will eliminate this potentiality damaging situation REQUIRED TOOLS AND EQUIPMENT All NEC Versa 2400 corrective maintenance procedu...

Page 72: ...removing and replacing the battery pack is as follows 1 Turn off the computer Close the LCD cover and turn the whole unit over 2 You will find a clamp latch lock knob that is securing the internal battery pack to the system unit To remove the battery pack push the lock knob sideways with one hand and with the other hand pull the battery pack out Note that this has to be done simultaneously 3 To re...

Page 73: ...null hard disk assembly and remove the hard disk drive cable 4 To replace the hard disk drive module reverse the above procedure Figure 4 1 Hard Drive Module Assembly Removing Replacing the Floppy Disk Drive Module The procedure for removing and replacing the floppy disk drive is as follows 1 Turn off the computer Close the LCD cover and turn the whole unit over 2 You will find a clamp latch lock ...

Page 74: ...omputer Follow all disassembly procedures mentioned from the start of this section 2 Slide the left and right hinge covers out to remove them 3 Lift the status bar cover out 4 To replace the LCD Status Cover and Hinge Covers reverse the removal proce dures mentioned above Removing Replacing the Keyboard The procedure for removing and replacing the keyboard is as follows 1 Turn off the computer Fol...

Page 75: ...ot need to remove this part if you are removing replacing the LCD WARNING The CPU is sometimes attached to the heat pipe so be careful not to damage the pins or the CPU may be inoperable Removing Replacing the CPU The procedure for removing the CPU is as follows 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 The CPU is located at the left rear ...

Page 76: ...ontinue remov ing replacing modules from the notebook you must follow all of the disassembly procedures mentioned from the start of this section 1 Turn off the computer and remove the Battery Hard Disk Drive and Floppy Disk Drive Modules Follow all disassembly procedures mentioned from the start of this section 2 Turn the System Unit upside down with the bottom facing up Remove the nine screws sec...

Page 77: ... unit This board alerts you to the processes presently in use on the computer 3 Remove the two screws and lift the board carefully out of the connections to the system board Figure 4 3 The LED Board Module Assembly Removing Replacing the System Board and I O Board The system board and the I O board are assembled together as one unit and must be re moved from the base unit before being separated fr...

Page 78: ...ard The system board is attached directly to the I O board The following procedure should be taken to separate the two boards 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Remove the four medium spacers located along the top and left side edge and the one screw located at the center bottom of the system board 3 Slowly separate the I O Board an...

Page 79: ...Field Service Guidelines 4 11 Figure 4 5 The I O Board Module Assembly ...

Page 80: ...llows 1 Turn off the computer Follow all disassembly procedures mentioned from the start of this section 2 Remove the two hex spacers from the center of the board and lift the module from the unit 3 To replace the power board module reverse the removal procedures mentioned above Figure 4 6 Power Board Module Assembly ...

Page 81: ... 11 8 Cover Left Hinge 24 40827 00 9 U S Keyboard 71 30335 00 10 LCD Cable Assembly 11 3 22 20286 00 11 NEC Model Nameplate NEC Versa 2400 NEC Model Nameplate NEC Versa 2400CD 25 41033 00 25 41034 00 12 LCD Front Panel Assembly 11 3 24 40818 00 13 LCD Hitashi 11 3 71 10469N00 14 LCD Inverter 12 00146 00 15 LCD Rear Cover 11 3 24 40819 0 16 NEC Logo 25 40851 00 17 Cover Right Hinge 24 40828 00 18 S...

Page 82: ...rd Disk Drive Assembly 1 GB Hard Disk Drive Assembly 25 00237 00 25 00238 00 28 Diskette Drive Assembly 24 70006 00 29 ROM Door 24 40810 10 30 Rubber Foot 24 80631 10 31 Bottom Cover Assembly 24 40793 10 32 Speaker 24 80620 00 33 Left Speaker Cable 22 20279 00 34 Right Speaker Cable 22 20280 00 35 Speaker Holder 24 50226 00 36 Keyboard Bracket 24 50227 00 Not shown in IPB figure ...

Page 83: ...Field Service Guidelines 4 15 Figure 4 7 NEC Versa 2400 Series Illustrated Parts Breakdown ...

Page 84: ...n Table 4 2 Table 4 2 Packaging and Documentation Part Numbers Description Model Number NEC Versa 2400 Series User s Guide 819 200134 000 Rev 00 NEC Versa 2400 Series Service and Reference Manual this guide 819 200167 000 Rev 00 Shipping Carton 158 041012 000 Foam Insert 158 041014 000 Foam Insert 158 041014 001 ...

Page 85: ...nt and select the appropriate menu to reach one of the following departments Information Center literature dealer locations sales leads response to ads NSRC National Service Response Center questions other than products spare parts or technical support Service Contracts TSC Technical Support Center technical support for everyone else FastFactsTM automated service that sends the latest information ...

Page 86: ...mation Information can be obtained from the FastFacts service 24 hours a day 7 days a week Us ing a touch tone telephone call the FastFacts number order the desired information through the automated attendant and FastFacts will automatically send the information to you Catalogs are available that list all of the documents and the document numbers Current catalogs include Catalog 1 Monitors Graphic...

Page 87: ...cts attempts to send the second order before the first order is completed the order may be canceled After three tries FastFacts assumes that the line is busy and will not process the order HELPFUL STARTERS Here are some helpful items to check before troubleshooting the notebook Is there any external power source connected to the computer Has the battery been fully charged Is the computer turned on...

Page 88: ...e with a bootable diskette and retry Display adapter failed using alternate The primary video adapter failed Check the primary video adapter Gate A20 failure The keyboard controller is not accepting command specifically the enable and disable A20 command Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified NEC service person...

Page 89: ...system board Turn the power off then back on again If the problem persists contact qualified service personnel Shutdown failure Either the keyboard controller is not accepting the reset command or the associated reset logic has failed Check the keyboard controller and system board Turn the power off then back on again If the problem persists contact qualified service personnel Time of day not set ...

Page 90: ...rsonnel Keyboard stuck key failure A key is jammed Locate the jammed key and fix it Make sure the keyboard cable and keyboard are connected properly Turn the power off then back on again If the problem persists contact qualified service personnel Memory failure at hex value read hex value expecting hex value Circuitry associated with the memory chips has failed Turn the power off then back on agai...

Page 91: ...the spacebar while memory tests were running and stopped the memory tests Press the F1 key to continue This message indicates that an error was found during POST Pressing the F1 key allows the system to attempt to reboot Beginning memory test Press the SPACEBAR to terminate the memory test A user can stop the memory tests by pressing the spacebar Press the F1 key to continue F2 to run the Setup ut...

Page 92: ...lace the system board Unexpected HW interrupt interrupt at address Type R eboot other keys to continue Hardware problem Not displayed if the expected interrupt handler is not enabled Check all hardware in the system Unexpected SW interrupt interrupt at address Type R eboot other keys to continue Error s in the software program Not displayed if the extended interrupt handler is not enabled Turn the...

Page 93: ...operly Otherwise replace the power board Data on the LCD is unreadable Adjust the brightness and contrast display controls found on the right side of the LCD panel Check if the LCD cables are inserted properly Check also connections inside the LCD panel Check if installed VGA driver is correct Check VGA controller chip on the system board if there is any cold or loosed soldering Replace the system...

Page 94: ...functions Check the connections of all internal devices Replace system board Diskette drive does not work Check if floppy drive cable is connected properly Check diskette type if correct and not faulty Replace diskette drive Replace system board Hard disk drive malfunction Check if hard disk drive is set properly on CMOS SETUP Check drive cables and connections Check if disk drive is good Replace ...

Page 95: ...all ring cover and clean the ball and the rollers inside Replace trackball module Check the keyboard controller chip for any cold or loosed soldering Replace the system board Serial device does not work If using serial mouse check if trackball option is disabled under CMOS Setup Check if mouse driver is installed properly Check if serial device is connected properly Replace serial device Check the...

Page 96: ...ables denotes Interlaced monitors VGA STANDARD MODES The following table lists VGA standard modes Table A 1 VGA Standard Modes Text Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 0 1 16 40 x 25 40 x 25 40 x 25 9 x 16 8 x 14 8 x 8 360 x 400 320 x 350 320 x 200 28 322 25 175 25 175 31 5 70 2 3 16 80 x 25 80 x 25 80 x 25 9 x 16 8 x 14 8 x...

Page 97: ...rs Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz D 16 40 x 25 8 x 8 320 x 200 25 175 31 5 70 E 16 80 x 25 8 x 8 640 x 200 25 175 31 5 70 F Mono 80 x 25 8 x 14 640 x 350 25 175 31 5 70 10 16 80 x 25 8 x 14 640 x 350 25 175 31 5 70 11 2 80 x 30 8 x 16 640 x 480 25 175 31 5 70 12 16 80 x 30 8 x 16 640 x 480 25 175 31 5 70 Table A 4 VGA Standard Modes Packed Pixel ...

Page 98: ...Horiz Freq KHz Vert Freq Hz 20 16 80 x 30 8 x 16 640 x 480 25 175 31 5 60 22 16 100 x 37 8 x 16 800 x 600 40 0 37 5 60 24 16 128 x 48 8 x 16 1024 x 768 65 0 48 5 60 24I 44 9 35 5 43 Table A 7 VGA Extended Modes 8 Bit Linear Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 30 256 80 x 30 8 x 16 640 x 480 25 175 31 5 60 32 256 100 x 37 8 x...

Page 99: ... 27 1 51 6 Table A 11 VGA Extended Modes Planar Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 6A 70 16 100 x 37 8 x 16 800x 600 40 0 38 0 60 72 75 16 128 x 48 8 x 16 1024 x 768 65 0 48 5 60 72 75I 44 9 35 5 43 Table A 12 VGA Extended Modes Packed Pixel Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz H...

Page 100: ... 800 x 600 49 5 46 9 75 Table A 14 VGA High Refresh Modes Planar Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Horiz Freq KHz Vert Freq Hz 12 16 80 x 30 8 x 16 640 x 480 31 5 37 5 75 6A 70 16 100 x 37 8 x 16 800 x 600 49 5 46 9 75 Table A 15 VGA High Refresh Modes Packed Pixel Mode Hex Mode No of Colors Text Display Font Size Pixel Reso lution Dot Clock MHz Hori...

Page 101: ...the manufacturer s instructions Battery Disposal Your bridge battery not your main battery is made of Nickel Metal Hybrid NiMH The bridge battery must be collected recycled or disposed of in an environmentally approved manner Your main battery made of Lithium Ion Li Ion and your CMOS lithium battery are not recyclable The incineration landfilling or mixing of Li ION and NiMH batteries with the mun...

Page 102: ...d specifications 2 8 CPU 1 2 P54CSLM 3 3 removing 4 7 D DC DC converter specifications 2 15 DIMM module 1 20 Disassembly battery pack 4 4 CPU 4 7 diskette drive 4 5 hard disk drive 4 5 heat plate 4 7 I O board 4 9 keyboard 4 6 LCD 4 8 LCD status bar cover 4 6 LED board 4 9 Power board 4 12 required tools 4 3 system board 4 9 top cover 4 8 VersaGlide 4 8 Disassembly procedures 4 4 Diskette drive st...

Page 103: ... 1 1 N NEC service telephone numbers 5 1 NiMH battery 1 9 features 3 11 Num lock key 1 6 P Packaging and documentation part numbers 4 16 Part numbers 4 13 PCMCIA controller 3 9 PCMCIA slot using 1 8 PCMCIA sockets 3 9 PHDisk utility 1 21 POST messages 5 4 Power board 3 11 Power connector 1 10 Power management modes 2 19 Power specifications 2 22 Power subsystem 3 10 Power switch 1 4 Power on self ...

Page 104: ...tem upgrades 1 19 T Technical support contacting 5 1 Transfer board specifications 2 8 Troubleshooting checklist 5 3 V VersaGlide 1 7 VersaGlide subsystem 3 10 VGA extended modes A 3 VGA high refresh modes A 5 VGA port 1 12 VGA standard modes A 1 VGA VESA driver diskette 1 12 Vibration specifications 2 22 Video controller 3 7 features 3 7 Video modes A 1 Y Y adapter 1 11 ...

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