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NEC VERSA 6050MH Service Manual

Versa 6000 series
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PROPRIETARY NOTICE AND LIABILITY DISCLAIMER
The information disclosed in this document, including all designs and related materials, is
the valuable property of NEC Computer Systems Division, Packard Bell NEC, Inc.
(NECCSD, PBNEC) and/or its licensors. NECCSD and/or its licensors, as appropriate, re-
serve all patent, copyright and other proprietary rights to this document, including all de-
sign, manufacturing, reproduction, use, and sales rights thereto, except to the extent said
rights are expressly granted to others.
The NECCSD product(s) discussed in this document 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 and is not warranted by NECCSD.
To allow for design and specification improvements, the information in this document is
subject to change at any time, without notice. Reproduction of this document or portions
thereof without prior written approval of NECCSD is prohibited.
NEC is a registered trademark of NEC Corporation;
Versa is a U.S. registered trademark of NEC Technologies, Inc.;
all are used under license by NEC Computer Systems Division (NECCSD), Packard Bell NEC, Inc.
All other product, brand, or trade names used in this publication are the trademarks or registered
trademarks of their respective trademark owners.
First Printing — January 1997
Copyright 1997
NEC Computer Systems Division, Packard Bell NEC, Inc.
1414 Massachusetts Avenue
Boxborough, MA 01719
All Rights Reserved

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Summary of Contents for NEC VERSA 6050MH

  • Page 1 Versa is a U.S. registered trademark of NEC Technologies, Inc.; all are used under license by NEC Computer Systems Division (NECCSD), Packard Bell NEC, Inc. All other product, brand, or trade names used in this publication are the trademarks or registered trademarks of their respective trademark owners.

  • Page 2: Preface

    NEC Versa 6050MX. The guide also provides hardware and interface information for users who need an overview of the system design. The manual is written for NEC-trained customer engineers, system analysts, service center personnel, and dealers. The manual is organized as follows:...

  • Page 3: Abbreviations

    xiii Abbreviations ampere disk operating system alternating current DRAM dynamic RAM advanced technology data terminal equipment (IBM PC) error checking and correction Bulletin Board System extended capabilities port binary-coded decimal error detecting system BIOS Customized Utility Enhanced Graphics Adapter BIOS basic input/output system Expanded Memory binary digit...
  • Page 4 Abbreviations illustrated parts breakdown programmable array logic infrared personal computer Interrupt Request register printed circuit board Industry Standard Architecture peripheral component interconnect In Service register plastic flat package input/output parallel input/output integrated peripheral controller pixel picture element inches per second PJQFP plastic J-lead quad flat pack interrupt request...
  • Page 5 Abbreviations Technical Assistance Center Thin chip package TQFP Thin-quad flat package Technical Support Center transistor/transistor logic tracks per inch UART universal asynchronous receiver/transmitter volt volts, direct current VESA video electronics standards association variable frequency oscillator Video Graphics Array VLSI very large-scale integration VRAM virtual RAM watt...
  • Page 6 This product is in conformity with the protection requirements of EC Council Directive 89/336/EEC on the approximation of laws of the Member States relating to electro-magnetic compatibility. This product satisfied the Class B limits of EN 55022. NEC Computer Systems Division, Packard Bell NEC, Inc. 1414 Massachusetts Avenue...

  • Page 7: Table Of Contents

    Power Button .......................1-4 Status Bar and Power Indicator................1-4 Status Icons ....................1-5 Keyboard ......................1-6 NEC VersaGlide ....................1-6 Diskette Drive and the NEC VersaBay II ..............1-7 Front Infrared (IR) Assembly ................1-8 Hardware Overview—Right Side .................1-8 Hardware Overview—Left Side ...................1-9 PC Card Slots .......................1-10 Battery Compartment....................1-10...
  • Page 8 Contents System Memory......................1-16 Memory Map ......................1-17 System Video.......................1-18 Parallel Interface ......................1-18 Serial Interface......................1-19 NEC Versa Chip Set ....................1-19 Intel Pentium P55CLM Microprocessor ..............1-19 M-Triton System Controller..................1-19 256K X Flash ROM ....................1-20 ROM BIOS....................1-20 VGA Controller ....................1-21 Parallel Interface ....................1-21 Keyboard Controller .....................1-21 PC CardBus Controller ..................1-22...
  • Page 9 Contents NEC VersaBay II Battery and Adapter Kit............2-12 Extending Battery Life ..................2-12 Using the DC Car Adapter ..................2-12 Operating Controls ......................2-13 Status Bar ......................2-14 Status Icons ....................2-14 Function Keys (Fn Keys)..................2-15 Smart Power Switch .....................2-15 Dip Switch......................2-16 Updating the System BIOS ................2-16 Power-On Self-Test (POST) ..................2-18...
  • Page 10 Contents Section 3 Troubleshooting and Repair Quick Troubleshooting ....................3-1 Helpful Questions ......................3-4 Informational Messages ....................3-4 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 Battery Packs ...................4-3 Maintaining the LCD Quality ................4-3 Required Tools and Equipment ..................4-3 Disassembly and Reassembly..................4-4...
  • Page 11 Contents List of Figures NEC Versa 6050MH/6050MX Notebook ............1-1 LCD Panel ..................... 1-3 Power Button Location .................. 1-4 System Status Bar ..................1-5 Keyboard Layout ................... 1-6 VersaGlide Location ..................1-7 NEC VersaBay II Location ................1-7 Right Side Features ..................1-8 Left Side Features ..................
  • Page 12 CPU Board Layout ..................A-1 I/O Board Layout................... A-2 List of Tables Model Configurations ..................1-2 Memory Map ....................1-17 NEC Versa Series Chip Types and Technologies..........1-18 Interrupt Controllers ..................1-21 Automatic Power-Saving Features ..............1-22 Maximum Performance Default Settings............1-24 Specifications....................1-25 I/O Connector Descriptions................
  • Page 13 NEC Versa 6000 Series Disassembly Sequence (Models 6050MH and 6050MX) ..............4-4 NEC Versa 6000 Series Field-Replaceable Parts (Models 6050MH and 6050MX) ..............4-22 NEC Service and Information Telephone Numbers......... 4-24 CPU Board Connectors.................. A-2 I/O Board Connectors ..................A-2 Keyboard/Mouse Connectors ................. A-3 Serial Port Connector Pin Assignments ............

  • Page 14: Section 1 Technical Information

    Section 1 Technical Information The NEC Versa 6000 Series notebook computers are lightweight, compact, and fully IBM compatible. The latest additions to the NEC Versa 6000 family include the following mod- els: NEC Versa 6050MH NEC Versa 6050MX. NOTE: This service manual covers the NEC Versa 6050MH and 6050MX models only.

  • Page 15: Hardware Overview-Front

    Super VGA, uses a 64 bit accelerator with a Peripheral Component Intercon- nect (PCI) interface. The LCD also supports VESA timing. The NEC Versa 6050MH LCD features the following: 12.1-inch active matrix Thin Film Transistor (TFT), Cold Cathode Fluorescent Tube (CCFT), Super VGA (SVGA) backlit color LCD 0.3 mm dot pitch...

  • Page 16: Lcd Panel

    Technical Information The NEC Versa 6050MX LCD features the following: 12.1-inch Extended Graphics Array (XGA) TFT high resolution active matrix XGA color LCD 0.24 mm dot pitch 18-bit digital interface 1024 x 768 resolution 256,000 colors. Additional LCD panel features include built-in stereo speakers and a slide switch that ad- justs screen brightness.

  • Page 17: Power Button

    Technical Information Power Button Slide the power button to the right to power on and power off the computer. The power button is a “smart” switch, meaning that it recognizes when the system is in Suspend mode. If in Suspend mode, you cannot power off until you press the suspend button again to bring the system out of Suspend mode.

  • Page 18: Status Icons

    Power Management — shows the current power management mode in use, in- cluding Off, Custom, High Performance or Longest Life. Diskette — appears when the NEC Versa writes data to or retrieves data from a diskette. Hard Disk — shows when the NEC Versa writes data to or retrieves data from the hard disk.

  • Page 19: Keyboard

    The PS/2 Microsoft mouse is the system’s default pointing device until the user selects the NEC Setup icon. When the user selects the NEC Setup icon, the NEC VersaGlide is in- stalled as the system’s pointing device. If an external mouse is installed, then the NEC Ver-...

  • Page 20: Diskette Drive And The Nec Versabay Ii

    The VersaBay II expansion slot lets the user replace the standard diskette drive with the 10x CD-ROM reader that also ships with the system. In addition to the CD- ROM reader, the VersaBay II accepts NEC options including a second battery pack, or an additional hard disk.

  • Page 21: Hardware Overview-Right Side

    NOTE : Do not use the IR port directly under flourescent incandescent light. HARDWARE OVERVIEW—RIGHT SIDE Review the following section for a description of the hardware on the right side of the NEC Versa. Figure 1-8 Right Side Features Internal Modem — NEC includes a 33.6 Kbps fax/voice/data modem with speak- erphone and answering machine support.

  • Page 22: Hardware Overview-Left Side

    AC/DC Power Port — Use the power jack to attach the NEC Versa to a DC power source, such as the AC adapter or the optional DC car adapter. HARDWARE OVERVIEW—LEFT SIDE Review the following section for a description of the hardware on the left side of the NEC Versa. Figure 1-9 Left Side Features...

  • Page 23: Pc Card Slots

    If the battery pack is uninstalled for a long period of time, the battery cells are drained, causing battery pack to deteriorate. HARDWARE OVERVIEW—REAR SIDE Review the following section for a description of the hardware on the rear of the NEC Versa. Figure 1-10 Rear Features...

  • Page 24: Parallel Port (Lpt1)

    IR assembly, go into Setup to change the default setting to the front IR assembly. When the NEC Versa is docked to the optional NEC Versa Docking Station 6000, the rear IR as- sembly is automatically disabled, and the front enabled. Additionally, the IR port can be re- directed, for the current session only, using the IR utilities within windows.

  • Page 25: Expansion Port

    NEC Versa Docking Station 6000. Monitor (Video) Port Use this 15-pin port to attach an external monitor to your NEC Versa. You can run the LCD display and the external monitor simultaneously or run either alone. Serial Port (COM 1) The 9-pin serial port provides a serial interface to which you can connect an RS-232C de- vice such as an external serial printer or modem.

  • Page 26: Diskette Drive

    VersaBay II slot. 10x CD-ROM Reader A 10x CD-ROM reader ships with the NEC Versa 6050MH and 6050MX models. The in- terchangeable ten-speed CD-ROM reader features the latest in CD-ROM technology. It in- stalls in the front of the system in the VersaBay II slot. The CD-ROM reader is assigned to the next available drive letter.

  • Page 27: Cpu Board

    Figure 1-12 CPU Board Layout Sound Board The sound board (G8XSY) provides the NEC Versa system with its audio capabilities via line-in/line-out jacks, and headphone/microphone jacks. It is situated on top of the I/O board. The sound board integrates the following features: Creative Labs Sound Blaster 16 compatible, Plug and Play support, Roland MPU 401.

  • Page 28: I/O Board

    Technical Information 1-15 Figure 1-13 Sound Board Layout I/O Board The SVGA system I/O board (G8WKPA), or the XGA system I/O board (G8WZGA) con- tains peripheral subsystems including serial, parallel and video ports, PC card controller and charger. It is located underneath the sound board. Refer to Appendix A for a list of connec- tors.

  • Page 29: Modem Board

    (14.4 Kbps for fax use) integrating built-in error control. The modem provides one standard phone connector, and one cellular phone connector for transforming the notebook into a speakerphone. NEC provides two analog phone cables (one is a spare) for convenience.

  • Page 30: Memory Map

    Technical Information 1-17 The following Cache RAM is provided: L1: 16KB (Internal Pentium) L2: 256 KB write back (External). Memory Map The system supports system and video shadowing, both controlled through complementary metal oxide semiconductor (CMOS). The system supports BIOS as a cacheable area with write protection.

  • Page 31: System Video

    1-18 Technical Information SYSTEM VIDEO The system's LCD operates using the Chips and Technologies 65550A1 VGA Controller. Video signals travel from the controller through the system's 15-pin D-SUB connector us- ing 5 volts. System video integrates a PCI-bus interface. The system ships with 2 MB Video RAM (VRAM).

  • Page 32: Serial Interface

    Technology Intel Pentium P55CLM Microprocessor The 150 MHz Intel Pentium microprocessor used in the NEC Versa series computer is built on Intel’s advanced 3.3V BiCMOS silicon technology. The CPU has on-chip dual- processing, a local multiprocessor interrupt controller, and power management features.

  • Page 33: 256K X Flash Rom

    1-20 Technical Information hyper page mode DRAM support direct mapped organization-write back policy fully synchronous 30 MHz PCI bus interface. 256K X Flash ROM The N28F020 flash ROM is a 32-pin, plastic lead chip carrier (PLCC). The chip allows easy updates to the system's BIOS if needed.

  • Page 34: Vga Controller

    Technical Information 1-21 VGA Controller The Chips and Technologies 65550A1 is a PCI 64-bit Graphics Accelerator. The integrated programmable linear address feature accelerates the graphics user interface (GUI) perform- ance. The controller also supports Hardware Multimedia and VESA interface standards. The controller provides advanced power management that helps to minimize power usage normal operation Standby (sleep) mode...

  • Page 35: Pc Cardbus Controller

    1-22 Technical Information PC CardBus Controller The Texas Instruments PCI1130 controller interfaces with the PCI bus, PC CardBus socket and configuration registers to provide: compliant with PCI 2.1 and 1995 PC card standards CardBus slots with hot insertion and removal independent Read and Write buffers for each direction burst transfers to maximize data throughput on the PCI CardBus bus.

  • Page 36: Interrupt Controllers

    Technical Information 1-23 Interrupt Controllers Using interrupts, it is possible to change the system’s code sequence. To change the se- quence, reassign the interrupt-levels. Fifteen interrupts can be used with a cascade connec- tion of two 82C59 interrupt controllers. Interrupt-level assignments 0 through 15 are listed in Table 1-4, in order of decreasing pri- ority.

  • Page 37: Power Management Overview

    Technical Information POWER MANAGEMENT OVERVIEW Power Management in the NEC Versa lets you conserve energy, save battery power, extend the life of your LCD backlight, and protect against data loss due to low battery power. Set some features to function automatically or activate them manually with the keyboard or a button.

  • Page 38: System Power Management

    Technical Information 1-25 System Power Management The system power management consists of the following operation modes. These modes are: Active Mode In active mode, the system uses maximum power. It operates with the default clock speed. The system continues to run at this speed unless overwritten by the power management features.

  • Page 39: Local Power Management

    30 seconds 30 seconds PLUG AND PLAY The NEC Versa features a Plug and Play functionality. Plug and Play is the ability of the BIOS and/or operating system to dynamically assign system resources to a newly installed device without user intervention.

  • Page 40: Specifications

    Technical Information 1-27 SPECIFICATIONS Table 1-7 provides a complete list of NEC Versa series system specifications. Table 1-7 Specifications Item Specification Chassis Configuration Size Width: 11.69 in. (297 mm) Depth: 9.49 in. (240.5 mm) Height: 12.1-inch (55.0 mm) Weight: 7.1 lb (3.22 kg), Exact weight depends on options...
  • Page 41 VGA — 1 port, 15-pin high-density D-sub External Keyboard/External Mouse — 1 port, PS/2, 6-pin MiniDin; exclusionary use or both supported with optional Y-adapter Expansion — 1 port, for optional NEC Docking Station 6000, optional PortBar 6000 Modem — 2-pin tip/ring connector, 9-pin cellular phone connector Mono MIC IN —...
  • Page 42 IDE interface (built-in), 2 1/2-inch x 1-inch high (thin-height) System ships with the 1.44-GB in NEC Versa 6050MH models, and the 2.1-GB hard disk drive in NEC Versa 6050MX models 10x CD-ROM Reader User-removable ten speed CD-ROM reader, installs in...
  • Page 43 1-30 Technical Information Table 1-7 Specifications Item Specification Software ® Standard MS-DOS version 6.22 ® Windows for Workgroups version 3.11, or Window 95 McAfee VirusScan™ McAfee WebScan™ Official Airline Guide (OAG®) FaxWorks™ with Voice and Data Communications Netscape Navigator Personal Edition ®...

  • Page 44: Section 2 Setup And Operation

    Connect the AC adapter cable to the power port on right side of the NEC Versa. Plug one end of the AC power cable into the AC adapter and the other end into a...

  • Page 45: Connecting The Ac Adapter

    Setup and Operation Figure 2-1 Connecting the AC Adapter NOTE: Do not cover or place objects on the AC adapter. This will allow heat to dissipate properly. Ensure that all connections are properly seated and secure. CAUTIONS This equipment uses an ungrounded power cable. Replace the cord if it be- comes damaged.

  • Page 46: Powering On The System

    Setup and Operation Slide the power button to the right to power on the computer. Figure 2-2 Powering on the System NOTE: If operating the system on DC power, verify that the system has a charged battery pack installed.

  • Page 47: Cable Connections

    Enhanced Parallel Port Connects to a 25-pin parallel device. IR Port The infrared port allows the user to transfer files between the NEC Versa and an IR-equipped desktop, or print to an IR-equipped printer without using cables. Expansion Connector Provides a 75-pin connector to attach the optional NEC Docking Station 6000 or PortBar 6000.

  • Page 48: Power Sources

    The following sections summarize the power sources. Using the AC Adapter Use the AC adapter and power cable that came with the NEC Versa to run the computer on alternating current (AC) power, or to recharge the battery pack. Use the AC adapter when- ever a wall outlet is nearby.

  • Page 49: Using The Main Battery Pack

    The battery pack is easy to install and remove. Checking Battery Power Levels The NEC Versa system integrates two tools to help the user keep track of the main (or an optional) battery's power level. These include the battery icon located in the tray on the taskbar, and the PowerGauge utility.

  • Page 50: Returning The Battery To Full Operation

    Setup and Operation Leave the battery pack in the system and connect your NEC Versa to the AC adapter and a wall outlet. If you connect the system to AC power and continue to use it, the battery recharges in approximately 2.5 to 7 hours. If you connect the system to AC power and do not use it, the battery recharges in about 2 hours.

  • Page 51: Replacing The Battery Pack

    Make sure the battery is properly installed in the battery bay. Replacing the Battery Pack Replace the battery pack installed in your NEC Versa system as follows. NOTE: Use Li-Ion batteries in the NEC Versa computer for which they are designed. Also, in- stalling another manufacturer’s battery, or using...

  • Page 52: Removing The Cover

    Setup and Operation Release the battery cover latch and slide the battery bay cover away from the system. Figure 2-5 Removing the Cover Place a finger in the notch on the battery and lift the battery out of the system. WARNING: Always lift the battery out of the system by the notch.

  • Page 53: Inserting The Battery Pack

    2-10 Setup and Operation Locate the grooves on the end of the battery. Lower the notched end of the bat- tery into the battery compartment. Figure 2-7 Inserting the Battery Pack Replace the battery bay cover as follows: Align the tabs on the bay cover with the grooves on the system chassis. Lower the cover onto the bay and slide it into place.

  • Page 54: Battery Precautions

    Read the instructions that came with the battery charger before charging the bat- tery. Use only the NEC battery charger designed for your NEC Versa battery type. Different NEC Versa models require different batteries and battery chargers. Charge the battery for the specified charge time only.

  • Page 55: Nec Versabay Ii Battery And Adapter Kit

    FnF5 . Or, slide the backlight control to a dimmer level. Using the DC Car Adapter Another way to power the NEC Versa is via car battery power using the optional DC car adapter. Connect the system to the optional DC car adapter as follows.

  • Page 56: Operating Controls

    Use a cable to connect to the Line-Out port on another audio system. Microphone Allows the user to record monophonic sound directly into the NEC Versa system. AC Port Use the power jack to attach the NEC Versa to a DC power source.

  • Page 57: Status Bar

    2-14 Setup and Operation Status Bar The NEC Versa status bar is located in the upper left corner of the keyboard panel. Figure 2-11 shows the status bar. Figure 2-11 Status Bar Location Status Icons The NEC Versa uses eight icons to let the user determine system status, as follows.

  • Page 58: Function Keys (Fn Keys)

    Suspend Smart Power Switch Provides an automatic feature that prevents you from accidentally powering off the NEC Versa, and losing your data while your system is in Suspend mode. The smart power switch senses that the system is in Suspend mode and prevents you from directly powering off the system when you press the power switch.

  • Page 59: Dip Switch

    Switch 4 — Reserved for factory use. Updating the System BIOS Use the following steps to update the NEC Versa system BIOS with the BIOS Update diskette (BUD). Specifically, the BIOS is the code transmitted onto your system’s micro- processor, or central processing unit (CPU).

  • Page 60: Locating The Switch Settings

    Setup and Operation 2-17 Check that computer power is off. Turn the NEC Versa upside down with the front of the unit facing you. Remove the hard disk drive. Locate switch 1 on the four-position dip switch in the hard disk drive bay.

  • Page 61: Power-On Self-Test (Post)

    A message similar to the following may appear: The NEC BIOS Update Utility should not be used to modify the BIOS in an NEC Versa system which is docked. If the NEC Versa is docked, please exit the BIOS Update Utility, power down, and undock the system before running the utility.

  • Page 62: Post Errors

    Setup and Operation 2-19 The electrical outlet is working. The brightness and contrast controls for the display are adjusted properly. All options have been properly installed. NOTE: If the system parameters (date, time, options, etc.) have not been entered for the pres- ent configuration, enter them when you complete the setup procedures (see “System Parameters”...
  • Page 63 2-20 Setup and Operation Table 2-4 POST Error Messages MESSAGE WHAT TO DO Invalid configuration One or more system configuration parameters information – run are not properly set. Start Setup, set Setup program them correctly, and exit and save to update the parameters.

  • Page 64: Setup Utility

    Setup and Operation 2-21 Table 2-4 POST Error Messages MESSAGE WHAT TO DO Keyboard Error A timing problem exists with the keyboard. If the error message remains, the keyboard may have to be repaired. KB\interface error Error exists in keyboard connector. If the error message remains, the keyboard may have to be repaired.

  • Page 65: Setup Utility Main Menu

    2-22 Setup and Operation Setup Utility Main Menu After you press , the system displays the Setup Main Menu screen, similar to the follow- ing. AMIBIOS HIFLEX SETUP UTILITY - VERSION 1.05 (C)1996 American Megatrends, Inc. All Rights Reserved Standard CMOS Setup Advanced CMOS Setup Power Management Setup Peripheral Setup...

  • Page 66: Looking At Screens

    Setup and Operation 2-23 Looking at Screens Setup screens have three areas as shown next. AMIBIOS SETUP - ADVANCED CMOS SETUP (C)1996 American Megatrends, Inc. All Rights Reserved Available Options: BootUp Sequence A:,C: C:,A: Auto Plug and Play Aware O/S A:,C: NumLock (at BOOT) 30/sec...

  • Page 67: Using Keys

    2-24 Setup and Operation Using Keys The following table lists Setup keys and their functions. Table 2-5 Setup Key Functions What It Does Moves the cursor between the displayed parameters. PgUp/PgDn Modifies the current parameter settings. For some parameter settings, moves the cursor between the subfields.

  • Page 68: Standard Cmos Setup

    Setup and Operation 2-25 Table 2-6 Setup Parameters DEFAULT ALTERNATE SETTING SETTING(S) PARAMETER Standard CMOS Setup MO/DAY/YEAR System Date HR:MIN:SEC System Time 1.44MB, 3.1/2" Not Installed/5 1/4”/720KB 3 1/2” Floppy Drive A Not Installed 1.44MB, 3 1/2"/1.2MB, 51/4"/360KB *Floppy Drive B Enabled 5 1/4”/720KB 3 1/2”...

  • Page 69: Power Management Setup

    2-26 Setup and Operation Table 2-7 Setup Parameters DEFAULT ALTERNATE SETTING SETTING(S) PARAMETER Power Management Setup Power Management under AC Longest Life High Perform/ Power Savings Level 1 minutes Custom /Off Hard Disk Timeout 1/2/4/6/8/10/15 min/Off/ 30/45 sec Standard Auto/Full Panel Backlight Standard Full...
  • Page 70 When you select the Standard CMOS Setup screen you will see System Time and System Date parameters as well as drive parameters. Date/Time Lets you set your NEC Versa’s calendar month/year and system clock. The calen- dar clock is year 2000 compliant. These settings remain in memory even after you turn off system power.
  • Page 71 Power Management Under AC Normally, whenever AC power is connected to your NEC Versa system, power management is disabled. If you enable this parameter, the system automatically activates the power management profile you set.
  • Page 72 When you select Suspend, after a specified amount of inactivity, your NEC Versa shuts down all devices as specified by the user in Setup (or ap- plies default timeouts). All your data is automatically recovered from where you left off when you Resume.

  • Page 73: Peripherals Setup

    2-30 Setup and Operation Auto Save to File The system enters STF after 30 minutes in Suspend mode. You can select this option only when the Power Savings Level is set to Custom, and the Suspend Mode is set to suspend. Suspend Warning Tone This parameter lets you enable or disable a warning tone when Suspend mode starts.

  • Page 74: Auto Configuration With Defaults

    There are two ways to set your NEC Versa’s STF feature. One method is via the Setup utility. Select Power Management from the Setup Main Menu. Move the cursor down and highlight Suspend Mode.

  • Page 75: Stf Benefits

    AUTOMATIC POWER-SAVING FEATURES Table 2-9 lists the NEC Versa series automatic power conserving features. These features work during battery and AC operation. The features listed below do not work when the op- tional docking station is connected.

  • Page 76: Quick Troubleshooting

    Section 3 Troubleshooting This section focuses on providing you with some information on basic troubleshooting as well as how to translate some system error messages. QUICK TROUBLESHOOTING This section summarizes problems that may develop during system operation and lists sug- gested corrective actions.
  • Page 77 Troubleshooting Table 3-1 Quick Troubleshooting Problem Corrective Actions Battery power does not last long Make sure that the power management features are enabled. Recharge the battery pack for 1½ hours before using again. Replace the battery pack. System halts during boot sequence Check condition of selected bootload device (diskette, hard disk or CD-ROM) for bad boot track or incorrect OS files.
  • Page 78 If the PC card is a Type II acrd, install it in the system’s other PC card slot. Replace the PC card. Replace the main board. NEC VersaGlide doesn’t work Check if PS/2 mouse driver is properly installed. Check VersaGlide cable inside the system if it is inserted properly.

  • Page 79: Helpful Questions

    Troubleshooting HELPFUL QUESTIONS Here are some helpful questions to ask when troubleshooting the notebook: Is there any external power source connected to the computer? Is the battery fully charged? Is the computer turned on and the Power LED activated? Are the LCD display controls set to the minimum level? Is the LCD display switched to the external monitor? Are all cables and devices connected properly and securely? Are all needed device drivers installed properly?

  • Page 80: Section 4 Field Service Guidelines

    Section 4 Field Service Guidelines This section contains preventive and corrective maintenance procedures for the NEC Versa 6000 Series notebook models as follows: NEC Versa 6050MH NEC Versa 6050MX. The first part of the section describes cleaning procedures and preferred handling proce- dures for sensitive components (for example disk drives, batteries).

  • Page 81: Cleaning The Notebook's Interior

    Field Service Guidelines Clean the keys with a damp cloth. A small, soft-bristle brush may be used to clean between the keys. Make sure to use a damp cloth (not wet) to prevent moisture from seeping between the keyboard and the metal plate, possibly damaging the components under the keys.

  • Page 82: Handling The Battery Packs

    Make sure to leave the computer's cover open for about ten minutes while the heat disperses, before closing the LCD. REQUIRED TOOLS AND EQUIPMENT All NEC Versa corrective maintenance procedures can be performed using the following tools: Tweezers Small flat-head screwdriver...

  • Page 83: Disassembly And Reassembly

    For complete disassembly of the system unit, follow the disassembly order listed in Table 4-1. To reassemble, follow the table in reverse order. Table 4-1 NEC Versa 6000 Series Disassembly Sequence (Models 6050MH & 6050MX) Sequence Part...

  • Page 84: Hard Disk Drive

    Field Service Guidelines Hard Disk Drive To disassemble the entire NEC Versa computer, start by removing the hard disk drive as follows. NOTE: NEC Versa hard disk drives can be used in other NEC notebook computers such as the NEC Versa 2000 and 4000 Series systems.

  • Page 85: Removing The Hard Disk Drive

    Field Service Guidelines Remove the hard disk drive as follows: Using your fingers, press down on the hard disk drive at the end closest to the connector. While maintaining pressure, slide the drive towards the front of the system. CAUTION: Do not lift the drive out of the sys- tem before releasing it from the system connec- tor.

  • Page 86: Diskette Drive

    Field Service Guidelines Diskette Drive Remove the diskette drive as follows. Make sure the NEC Versa is powered off, all options are disconnected, and the LCD panel is closed. Turn the system upside down with the front facing you. Locate the VersaBay II release latches on the bottom of the unit.

  • Page 87: Main Battery Pack (Li-Ion Type)

    Figure 4-4 Removing the Standard Diskette Drive Main Battery Pack (Li-Ion Type) Remove the main battery pack as follows. NOTE: Use Li-Ion batteries in the NEC Versa computer for which they are designed. Also, in- stalling another manufacturer’s battery, or using a combination of very old and new batteries can deteriorate battery and equipment performance.

  • Page 88: Removing The Battery Compartment Cover

    Field Service Guidelines Release the battery cover latch and slide the battery bay cover away from the system. Figure 4-5 Removing the Battery Compartment Cover Place a finger in the notch on the battery and lift the battery out of the system. NOTE: Always lift the battery out of the system by the notch.

  • Page 89: Lcd And Top Cover

    4-10 Field Service Guidelines LCD and Top Cover Remove the LCD and top cover as follows. Power off the computer. Remove the bottom base unit cover as follows. Turn the computer over with the VersaBay II slot facing towards you. Locate the 10 screws that secure the bottom base unit cover.

  • Page 90: Disconnecting The Lcd Connectors

    Field Service Guidelines 4-11 Disconnect the two LCD cables from connectors P12 and CN3 on the main board. Figure 4-8 Disconnecting the LCD Connectors Lift the top cover and LCD up and off of the base unit assembly. NOTE: Remove the top cover carefully, so that you don’t damage the plastic.

  • Page 91: Power Button, Rear Ir Assembly, Keyboard

    4-12 Field Service Guidelines Power Button, Rear IR Assembly, Keyboard Remove the power button, rear IR assembly and/or keyboard as follows. Remove the LCD and top cover as previously described. The power button is held in place primarily by the computer’s top cover. Once the top cover is removed, just lift the power button out of its retaining inserts.
  • Page 92 Field Service Guidelines 4-13 Remove the keyboard as follows. Locate the two ribbon cables that attach to the CPU board via connectors P3 and P4. Figure 4-10 Disconnecting Keyboard Cables Use a flat-head screwdriver to push open the connector tabs. Lift the keyboard out of the base unit.

  • Page 93: Lcd Status Bar, Versaglide Assembly, 33.6 Kbps Modem Board, Metal Keyboard Supports

    4-14 Field Service Guidelines LCD Status Bar, VersaGlide Assembly, 33.6 Kbps Modem Board, Metal Keyboard Supports Remove the LCD status bar, VersaGlide, 33.6 Kbps modem board, and/or metal keyboard support as follows. Remove the LCD, top cover, keyboard, power button and rear IR assembly as previously described.

  • Page 94: Bridge Battery, Cmos Battery, Buzzer

    Field Service Guidelines 4-15 Remove the system modem board as follows: Locate the system modem board. The modem board rests on the top of the metal keyboard supports, right above the front IR assembly. Lift the modem board out of connector P10 on the CPU board. First, make sure the rear IR assembly is disconnected from connector P7.
  • Page 95 4-16 Field Service Guidelines To remove the bridge battery disconnect the cable from connector P15 on the I/O board and remove the bridge battery. Remove the CMOS battery as follows. Locate the cable on the CMOS battery. Disconnect the cable from connector P13 on the I/O board and lift the CMOS battery out of the base unit.

  • Page 96: Microphone Assembly, Cpu Board

    Field Service Guidelines 4-17 Microphone Assembly, CPU Board Remove the microphone assembly and CPU board as follows. Remove the following as previously described: top cover keyboard LCD status bar VersaGlide metal keyboard supports. Disconnect the bridge battery, CMOS battery and buzzer from the I/O board. To remove the microphone assembly, first disconnect the microphone cable from connector CN4.

  • Page 97: Heat Shield, Sound Board

    4-18 Field Service Guidelines Heat Shield, Sound Board Remove the heat shield, sound board as follows. Remove the following as previously described: top cover keyboard LCD status bar VersaGlide metal keyboard support bridge battery, CMOS battery, buzzer (speaker), and CPU board Remove the two screws that secure the heat shield to the base unit and lift up the heat shield.

  • Page 98: I/O Board

    Field Service Guidelines 4-19 I/O Board Remove the I/O board as follows. Remove the following as previously described: top cover keyboard LCD status bar VersaGlide metal keyboard support CPU board heat shield, sound board, and the microphone assembly Remove the screw securing the I/O board to the bottom base unit. Lift the I/O board up and out of the base unit.

  • Page 99: Illustrated Parts Breakdown

    ILLUSTRATED PARTS BREAKDOWN The next section contains the NEC part numbers and illustrated parts breakdown (IPB) fig- ure for the NEC Versa. Figure 4-16 shows the system exploded view diagram, or IPB. Table 4-2 lists field-replaceable parts and corresponding part numbers.
  • Page 100 Field Service Guidelines 4-21 Figure 4-16 NEC Versa Models 6050MH (PC-6240-91803) & 6050MX (PC-6240-A1803) Illustrated Parts Breakdown...

  • Page 101: (Models 6050Mh And 6050Mx)

    4-22 Field Service Guidelines Table 4-2 NEC Versa 6000 Series Field-Replaceable Parts (Models 6050MH and 6050MX)* Item Part Number 1. Speaker with Cable (also called Buzzer) 802-870018-007A 2. CMOS Battery 804-021107-004A 3. Bridge Battery 804-021205-002A 4. Battery Compartment Cover (Cap) 136-238578-001A 5.

  • Page 102: (Models 6050Mh And 6050Mx)

    Field Service Guidelines 4-23 Table 4-2 NEC Versa 6000 Series Field-Replaceable Parts (Models 6050MH and 6050MX)* Item Part Number 27. Hard Disk Compartment Cover 136-238579-001A 28. 2.1 GB Hard Disk Drive OP-220-62008 29. 3.5-inch, 1.44-MB Diskette Drive 134-507049-0010 30. Main Battery (Li-Ion) 804-021248-001A 31.

  • Page 103: Service Information

    1(416) 795-3554 TECHNICAL SUPPORT NECCSD Customer Service Response Center provides an E-mail service for Internet users. Technical questions regarding NEC products can be sent over the Internet system to the Center. The Internet address is as follows: tech-support@nectech.com If it is more convenient, questions may also be faxed to the Customer Service Response Center.

  • Page 104: Product Information

    Center can not get their answer to you. We will reply to all questions received by Internet or fax within one business day. PRODUCT INFORMATION NEC FastFacts is an automated electronic information service used to obtain up-to-date product application notes, installation procedures, troubleshooting tips, data sheets, techni- cal information bulletins, price lists, and other information.
  • Page 105 4-26 Field Service Guidelines For international use, first enter the international long distance access number (011), your country code, area code or city code, then your fax number. The information requested will be sent automatically to your fax machine. If FastFacts at- tempts to send the second order before the first order is completed, the order could be can- celed.

  • Page 106: Appendix A Connector Locations And Pin Assignments

    Appendix A Connector Locations and Pin Assignments Figure A-1 and Table A-1 show CPU board connectors. The remaining tables provide pin assignments for additional system connectors. Figure A-1 CPU Board Layout...

  • Page 107: I/O Board Layout

    Connector Locations and Pin Assignments Table A-1 CPU Board Connectors Connector Description P3 and P4 Keyboard Connectors LCD Status Bar VersaGlide Assembly Connector Rear Infrared Assembly Connector Modem Board Connector Figure A-2 I/O Board Layout Table A-2 I/O Board Connectors Connector Description PC Card Connector...
  • Page 108 Connector Locations and Pin Assignments Table A-2 I/O Board Connectors Connector Description CMOS Battery Bridge Battery Table A-3 Keyboard/Mouse Connectors Signal Keyboard Data Mouse Data Ground Keyboard Clock Mouse Clock...
  • Page 109 Connector Locations and Pin Assignments Table A-4 Serial Port Connector Pin Assignments Signal Data Carrier Receive Data Transmit Data Data Terminal Ready Ground Data Set Ready Request to Send Clear to Send Ring Indicator Table A-5 CRT Connector Pin Assignments Signal Green Blue...
  • Page 110 Connector Locations and Pin Assignments Table A-6 Parallel Printer Pin Assignments Signal - Strobe Data Bit 0 Data Bit 1 Data Bit 2 Data Bit 3 Data Bit 4 Data Bit 5 Data Bit 6 Data Bit 7 - Acknowledge Busy Select - Auto Feed XT...
  • Page 111 Connector Locations and Pin Assignments Table A-8 Hard Disk Drive Connector Signal HDD Access LED Chip Select 0 Chip Select 1 Address 0 Address 2 Address 1 Diagnostic Not Used Not Used Not Used IO Channel Ready MS Select IO Write I/O Read Not Used Data 0...
  • Page 112 Connector Locations and Pin Assignments Table A-8 Hard Disk Drive Connector Signal Data4 Ground Data4 Ground Data5 Ground Data10 Ground Data6 Ground Data9 Ground Data7 Not Used Ground Ground RESET Ground...

  • Page 113: Simultaneous Crt Display

    Appendix B Video Modes The following tables list NEC Versa system video modes. Table B-1 LCD Display Mode Setting (800x600 TFT Color LCD & Simultaneous CRT Display) Mode Display Text Pixel Refresh (Hex) Mode Colors Display Resolution Font Rate Text...

  • Page 114: Simultaneous Crt Display

    Video Modes Table B-1 LCD Display Mode Setting (800x600 TFT Color LCD & Simultaneous CRT Display) Mode Display Text Pixel Refresh (Hex) Mode Colors Display Resolution Font Rate Text Mono 80x25 720x350 9x14 Text Mono 80x25 720x350 9x14 7*** Text Mono 80x25 720x400...
  • Page 115 Video Modes Table B-2 CRT Display Mode (CRT only) Mode Display Text Pixel Refresh (Hex) Mode Colors Display Resolution Font Rate 0, 1 Text 40x25 320x200 0*, 1* Text 40x25 320x200 8x14 0**, 1** Text 40x25 360x400 9x16 2, 3 Text 80x25 640x200...
  • Page 116 Video Modes Table B-3 Panning Video Mode (800x600 TFT Color LCD and Simultaneous CRT Display) Mode Display Text Pixel Font Refresh (Hex) Mode Colors Display Resolution Size Rate Graphics(L) 256 100x37 800x600 8x16 (128x48) (1024x768) Graphics(L) 32K 100x37 800x600 8x16 (160x64) Graphics(L) 64K 100x37...

  • Page 117: Lcd Display Xga Mode Setting

    Video Modes Table B-4 LCD Display XGA Mode Setting (1024x768 TFT Color LCD & Simultaneous CRT Display) Mode Display Text Pixel Refresh (Hex) Mode Colors Display Resolution Font Rate Text Mono 80x25 720x350 9x14 Text Mono 80x25 720x350 9x14 7*** Text Mono 80x25...

  • Page 118: Battery Replacement

    A lithium CMOS clock battery in your computer maintains system configuration information. In the event that the battery fails to maintain system configuration information, NEC recommends that you replace the battery. Have an authorized NEC service representative replace the battery.
  • Page 119 Index DC car adapter, 2-12 Default power management settings, 1-26 AC adapter, 2-5 Disassembly guidelines, 4-4 AC power port, 1-9 Diskette controller, serial interface, parallel Accessing setup, 2-21 interface, 1-21 Active mode, 1-25 Diskette drive, 1-7, 1-13 Automatic power saving, 2-32 Display, 1-29 Automatic power saving features, 1-24 Expansion port, 1-12...
  • Page 120 Quick troubleshooting, 3-1 Monitor port, 1-12 Mouse port, 1-10 Rear IR port, 1-11 Recharging the battery, 2-7 NEC Versa disassembly sequence, 4-4 Replacing the battery pack, 2-8 NEC Versa video modes, B-1 ROM BIOS, 1-20 Operating controls, 2-13 Serial interface, 1-19...
  • Page 121 Index-3 Setting power management levels System time, 2-27 using F7, 1-24 System video, 1-18 Setting system parameters, 2-24 hard disk drive, 2-28 peripherals, 2-30 Technical support, 4-24 power savings, 2-28 Troubleshooting Setting time and date, 2-27 helpful questions, 3-4 Setup key functions, 2-24 Setup utility, 2-21 main screen, 2-27 Unpacking, 2-1...

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Versa 6050mx

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