NEC VERSA 6220 - SERVICE Service Manual Download

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Connector Locations and Pin Assignments A-5

Table A-6 Parallel Printer Pin Assignments

Pin

Signal

- Auto Feed XT

- Error

- Initialize

- Select In

18 -25

Ground

Table A-7 Power Connector

Pin

Signal

Ground

DCSYS

DCCHG

Table A-8 Hard Disk Drive Connector

Pin

Signal

HDD Access LED

+5V

Chip Select 0

Chip Select 1

+5V

Address 0

+5V

Address 2

+5V

Address 1

+5V

Diagnostic

Not Used

IRQ

Not Used

Summary of Contents for VERSA 6220 - SERVICE

Page 1: ...anying 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 improvement...

Page 2: ...pliance power consumption and system memory specifications Section 2 Setup and Operation takes the authorized service technician or dealer from unpacking to setup and operation The section includes a description of operating controls setting parameters and accessing the NECCSD bulletin board system BBS Section 3 Troubleshooting lists troubleshooting procedures as well as helpful servicing hints Se...

Page 3: ...ledge DC direct current DIMM dual inline memory module 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 ECP extended capabilities port EDO enhanced date out EDS error detecting system EGA Enhanced Graphics Adapter EMS Expanded Memory Specifica...

Page 4: ... National Authorized Service Center NC not connected NDP numeric data processor NMI Non maskable Interrupt ns nanosecond NSRC National Service Response Center PAL programmable array logic PC personal computer PCB printed circuit board PCI peripheral component interconnect PFP plastic flat package PIO Programmed Input Output pixel picture element PJQFP plastic J lead quad flat pack PLCC plastic lea...

Page 5: ... TSC Technical Support Center TTL transistor transistor logic tpi tracks per inch UART universal asynchronous receiver transmitter 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 6: ...e Overview Right Side 1 8 Hardware Overview Left Side 1 10 Hardware Overview Rear Side 1 11 Hardware Overview Internal Components 1 12 Battery Pack 1 12 Hard Disk Drive 1 12 Diskette Drive 1 12 20X CD ROM Reader 1 12 CPU Board 1 12 Sound Board 1 12 Graph Board 1 14 I O Board 1 14 CMOS Battery 1 15 Bridge Battery 1 15 System Memory 1 15 Memory Map 1 16 System Video 1 16 Parallel Interface 1 17 Seri...

Page 7: ...re Setup 2 1 Cable Connections 2 3 Power Sources 2 4 Using the AC Adapter 2 4 Using the Main Battery Pack 2 5 Checking Battery Power Levels 2 5 What to Do When Battery Power Gets Low 2 6 Returning the Battery to Full Operation 2 6 When to Change the Battery 2 6 Battery Handling 2 6 Replacing the Battery Pack 2 7 Battery Precautions 2 10 Recharging Battery Precautions 2 10 NEC VersaBay II Battery a...

Page 8: ...ng System Parameters 2 28 BIOS Setup Menus 2 31 Standard CMOS Setup 2 31 Advanced CMOS Setup 2 32 Power Management Setup 2 32 Boot Device Setup 2 34 Peripherals Setup 2 34 Other BIOS Setup Options 2 35 Password Protection 2 35 Using BIOS Setup to Set Power Management 2 35 Using the Save to File STF Feature 2 36 STF Benefits 2 36 Section 3 Troubleshooting Quick Trouble Shooting 3 1 Problem Checklis...

Page 9: ...LCD Status Bar and Power Button 4 19 Bridge Battery CMOS Battery Buzzer 4 20 Sound Board and Microphone 4 21 IR Assembly and Graph Board 4 21 CPU Assembly 4 23 I O Board 4 24 Illustrated Parts Breakdown 4 25 Service Information 4 29 Technical Support 4 30 Product Information 4 30 Ordering Information from FaxFlash 4 30 Appendix A Connector Locations and Pin Assignments Appendix B Video Modes List ...

Page 10: ...Cover 2 9 2 9 Connecting the Car DC Adapter 2 11 2 10 Keyboard Panel LEDs and Controls 2 12 2 11 Status Bar Location 2 13 2 12 Dip Switch Location 2 15 2 13 Locating the Speaker Cap Screws 2 17 2 14 Removing the Speaker Caps 2 17 2 15 Lifting the Keyboard 2 18 2 16 Positioning the Keyboard 2 18 2 17 Dip Switches 2 19 2 18 Reassembling the System 2 20 2 19 Setup Main Menu 2 26 2 20 Advanced CMOS Se...

Page 11: ...ly and Graph Board 4 22 4 21 Removing the CPU Board from the Graph Board 4 24 4 22 Removing the I O Board 4 25 4 23 NEC Versa Model 6220 30 60 Illustrated Parts Breakdown 4 26 A 1 Graph Board Layout A 1 A 2 I O Board Layout A 2 List of Tables 1 1 Model Configurations 1 2 1 2 Memory Map 1 16 1 3 NEC Versa Series Chip Types and Technologies 1 18 1 4 Interrupt Controllers 1 21 1 5 Automatic Power Sav...

Page 12: ...gnments A 3 A 5 CRT Connector Pin Assignments A 4 A 6 Parallel Printer Pin Assignments A 4 A 7 Power Connector A 5 A 8 Hard Disk Drive Connector A 5 B 1 LCD Display Mode Setting 1024x768 TFT Color LCD and Simultaneous CRT Display Standard Video Mode B 1 B 2 Frequency Table of Standard Video Mode B 2 B 3 Expanded Video Mode B 2 B 4 Frequency Table of Extended Video Mode B 3 B 5 CRT Display Mode Set...

Page 13: ...ers only the NEC Versa 6220 30 60 notebooks All figures in this manual reflect this series of notebooks Figure 1 1 NEC Versa 6220 30 60 Series Notebook This section of the manual provides system configuration information including an over view of hardware and interface components See the following table for a system specific breakdown of the hardware ...

Page 14: ...aphics Array XGA TFT Color Display HARDWARE OVERVIEW FRONT Take a moment to become familiar with the location and function of controls located on the front of the system Liquid Crystal Display LCD The LCD operates with the NeoMagic NMG4 controller The controller supports XGA uses a 64 bit accelerator with a Peripheral Component Interconnect PCI interface The LCD also supports VESA timing The NEC V...

Page 15: ...ion Fn F5 and Auto Setup power management settings See Section 2 Setup and Operation for information on using these settings In addition the automatic LCD status feature conserves the backlight When the LCD is closed the backlight shuts off automatically saving battery power Power Button Slide the Power button to the right to power on and power off the computer The Power button is a smart switch m...

Page 16: ...CD bar indicating that a device is accessed an operation performed or a power mode activated The graphic icons displayed on the LCD bar resemble either their physical characteristics or their primary function See the LCD Status Bar figure shown next and the descriptions that follow for the specific meaning of each icon The power indicator is located just above and to the left of the status bar The...

Page 17: ...st Life Diskette Drive 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 Caps Lock appears when Caps Lock is in effect Scroll Lock shows that Scroll Lock is in effect Num Lock appears when Num Lock is in effect Num Lock lets the user enter numbers for calculations via the numeric keypad...

Page 18: ...s the system s mouse It con trols the on screen pointer cursor To use the VersaGlide move your finger across the NEC VersaGlide pad and the cursor follows The buttons below the NEC VersaGlide al low the user to select or deselect menu items Tap and double tap are supported on the VersaGlide pad The PS 2 Microsoft mouse is the system s default pointing device until the user selects the NEC Setup ic...

Page 19: ...stalled in the Ver saBay II slot on the front of the computer The VersaBay II expansion slot lets the user re place the standard diskette drive with the 20X 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 Figure 1 7 NEC VersaBay II Location ...

Page 20: ...ped printer without using cables 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 Kensington Lock Gives the user the option to add an optional Kensington Lock Hard Disk Drive Bay Cover Release Latch The hard disk drive bay contains the removable hard disk drive To access the hard disk drive...

Page 21: ...connect up to 127 USB equipped peripheral devices to your NEC Versa TV Out Jack Lets you use your television set as an external monitor This port supports both NTSC and PAL signals NOTE The TV Out port does not support the SECAM signal used in some countries For proper display set the video mode to 640 x 480 AC Power Port Use the power jack to attach the NEC Versa to a DC power source such as the ...

Page 22: ... allows you to control the speaker volume Headphones lets you connect external headphones or speakers to your NEC Versa Plugging in headphones disables the built in system speakers Line Out lets the NEC Versa act as an input source for another audio system Connect this port to a Line In port on another audio system to play or record Line In lets you use another audio system like a home stereo as a...

Page 23: ...ort is an Enhanced Capabilities Port ECP The ECP standard provides you with a greater processing speed than the conventional parallel port It also supports Enhanced Parallel Port EPP bi directional and uni directional proto cols Expansion Port This port also called the Docking port provides a connection for NEC Versa 6220 30 60 options including the NEC Docking Station 6000 Plus the NEC PortBar 60...

Page 24: ...17 mm hard disk drive ships with the sys tem Diskette Drive The interchangeable 3 5 inch 1 44 MB diskette drive installs in the front of the system in the VersaBay II slot 20X CD ROM Reader A 20X CD ROM reader ships with the NEC Versa 6220 30 60 notebooks The inter changeable twenty speed CD ROM reader features the latest in CD ROM technology It in stalls in the front of the system in the VersaBay...

Page 25: ...al Information 1 13 Integrated Music Synthesis ESFM and Stereo Digital to Analog Converter DAC FM Synthesizer 16 bit Stereo CODEC 4 0KHz to 44 1KHz Sampling Rate 7 Channel Mixer Figure 1 11 Sound Board Layout ...

Page 26: ...ding the DIMM connectors These are identified in the diagram shown in Appendix A Figure 1 12 Graph Board Layout I O Board The system I O board G8YAQ contains peripheral subsystems including serial parallel and video ports and charger It is located underneath the main board Refer to Appendix A for a list of connectors ...

Page 27: ...for up to 5 minutes while in Suspend mode It is connected to the Graph board via connector P11 The AC adapter maintains voltage in the bridge battery when the system is powered on or off The bridge battery stores 7 2 Volts 70 mAH SYSTEM MEMORY The Graph board provides 32 MB 3 3 V SO DIMM of standard RAM Optional SO DIMMs with a value of 16 32 or 64 MB can be added to increase system memory up to a...

Page 28: ... Video Buffer CGA EGA color and VGA color 0C0000 0CBFFFh 48 KB Video ROM EGA and VGA 0CC000 0CFFFFh 16 KB Unused Reserved for Adapter ROMs and other devices requiring ROMs 0D0000 0DFFFFh 64 KB Used by Adapter ROMs i e network controllers hard disk controllers SCSI host adapters 0E0000 0EFFFFh 64 KB Used by System ROM adapters i e network controllers with boot capability 0F0000 0FFFFFh 64 KB System...

Page 29: ...output from the standard ISA port only Bidirectional mode sends data using the standard ISA port or PS 2 technology Enhanced mode enables high speed data transmission to occur using either the unidirectional or bidirectional modes The default parallel port address is 378h and the interrupt level is IRQ07 Pin locations for the parallel interface are listed in Appendix A SERIAL INTERFACE The RS 232C...

Page 30: ...FP PC1131 Texas Instruments PC Card Controller 208 pin QFP ES1869 ESS Technologies Sound Controller 100 pin PQFP Intel Pentium P55CLM Microprocessor The 200 233 or 266 MHz Intel Pentium microprocessors with MMX technology used in the NEC Versa 6220 30 60 computer is built on Intel s advanced 2 5V BiCMOS silicon technology The CPU has on chip dual processing a local multiprocessor interrupt con tro...

Page 31: ... the LCD indicator panel diskette drive hard drive communication devices and peripherals The system BIOS also contains Auto Setup and provides VGA controller support The ROM BIOS is copied into RAM shadowing for optimum performance The ROM BIOS contains both the system and video BIOS The system BIOS is located in the upper portion of the device video BIOS is located in the lower portion System BIO...

Page 32: ...e CPU to receive the data The controller automatically adds an even parity bit to the data sent and waits for a response The device must acknowledge that the data was successfully received by sending a response to the controller for each byte of data received PC CardBus Controller The Texas Instruments PC1131 controller interfaces with the PCI bus PC CardBus socket and configuration registers to p...

Page 33: ...ontrollers Controller Master Slave Priority Name Device Master 0 IRQ00 Counter 0 Timer 1 Master 1 IRQ01 Keyboard Master 2 IRQ02 Programmable Controller Slave 3 IRQ08 Real time Clock Slave 4 IRQ09 Infrared Port Slave 5 IRQ10 USB Port Slave 6 IRQ11 PC Card Bus controller Slave 7 IRQ12 PS 2 Mouse Slave 8 IRQ13 Math Coprocessor built into CPU Slave 9 IRQ14 Hard Disk Controller 1 Slave 10 IRQ15 IDE DS ...

Page 34: ...input for the specified timeout Hard Disk 2 minutes Hard disk motor stops when hard disk is not accessed for specified timeout Standby 4 minutes System enters Standby mode after total system inactivity You can change the timeout period for any of the devices using Setup See Section 2 for Setup utility procedures Use the FnF7 key combination to set the power management level The faucet icon changes...

Page 35: ...ss the Suspend button to enter Suspend mode when you need to be away from the system for a short period of time and want to return to where you left off In addition to quickly activate the Save to File feature press the Fn and Suspend buttons simultaneously This shuts down the system and saves the current work ing data to a file Local Power Management Use Auto Setup to select one of four power man...

Page 36: ...C Versa features 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 For example you can suspend the system add an external keyboard mouse or monitor and when you resume working the NEC Versa recognizes the devices that have been con nected to it Similarly you can r...

Page 37: ...tional cards oriented one on top of the other One 3 1 2 inch x 0 75 inch high slot front access for standard 1 44 diskette drive optical diskette drive 120 MB 20X CD ROM reader optional hard disk drive or Li Ion battery Power 100 to 240 Volts AC at 50 or 60 Hz Output Voltage 18 5 V DC 2 45 A 45 5 W Battery Pack Weight 85 lb 38 Kg Voltage 14 4 V Capacity 2600 mAH Battery Life Approximately 2 to 4 h...

Page 38: ...Bar 6000 or optional FDD Connector Kit Mono MIC IN 1 port 3 pin Mini Pin Jack Stereo Headphones 1 port 3 pin Mini Pin Jack 5 watts per channel Stereo Line In 1 port 3 pin Mini Pin Jack Stereo Line Out 1 port 3 pin Mini Pin Jack TV Out 1 port RCA Jack USB Port 1 port 4 pin DC In 1 port for AC adapter cable Memory System Memory 32 MB high speed EDO access 70 ns Optional Two DIMM sockets for base and...

Page 39: ...d Built in 85 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 Software Standard Windows for Workgroups Version 3 11 Window 95 or Windows NT Adobe Acrobat Reader AT T WorldNet CompuTrace Security Software Intel s LANDesk Client Manager Micro...

Page 40: ...re 41 to 95 F 5 to 35 C Relative Humidity 20 to 80 No condensation Storage Temperature 4 to 104 F 20 to 40 C Relative Humidity 20 to 80 No condensation Administrative Compliance U S FCC UL Canada CSA DOC Germany VDE TUV CE Australia AS for AC adapter only Other Compliance PC97 Compliance Energy Star VESA PnP VESA PnP ISA ...

Page 41: ...hipping carton on a sturdy surface and carefully unpack the system The carton contents include the system CD ROM reader AC adapter AC power cord battery software CDs and user documentation HARDWARE SETUP When connecting power and signal cables do the following Note that the Power switch turns on or off Slide the switch right to turn it on slide the switch again to turn it off NOTE Always plug the ...

Page 42: ...d CSA certified in Canada type SPT 2 18 AWG 2 conductor cord with a permanently attached NEMA type 5 15P plug at one end and a permanently attached connector body on the other Cord length may not exceed 15 feet Outside the U S and Canada the cord must be rated for at least 250VAC at 10 amps and must indicate international safety agency approval The plug must be a type appropriate for the country w...

Page 43: ... I O Connector Descriptions I O Connector Function USB Port right side Connects to a 4 pin USB device TV Output Jack right side Connects to a RCA jack AC Power Port right side Connects to a AC adapter Keyboard Mouse Port Connects to a PS 2 style mouse or a 101 key external PS 2 style keyboard Parallel Port Connects to a 25 pin parallel device Expansion Connector Provides a 75 pin connector to atta...

Page 44: ...t 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 WARNING Do not attempt to disassemble the AC adapter The AC adapter has no user replaceable or serviceable parts inside Dangerous voltage in the AC adapter can cause serious per sonal injury or death The AC adapter is intended for use wi...

Page 45: ...e battery pack is installed one battery icon appears If two batteries are installed two battery packs appear A blinking battery icon indicates that the battery is charging A fast blinking battery icon occurs when installing a new battery during unknown battery status when there is a problem with the battery Similarly read the percentages that appear next to the battery icons to find out exactly ho...

Page 46: ...talog for more information Returning the Battery to Full Operation To return the battery to its normal state try the following remove and then reinstall the battery reinstall the battery in the NEC Versa discharge the battery then fully recharge the battery to 100 if the battery in use was in storage for an extended period of time When to Change the Battery The following symptoms indicate that bat...

Page 47: ... discolored overheats or emits a foul odor Keep the battery dry and away from water Keep metal objects away from battery terminals Metal objects in contact with the terminals can cause a short circuit and damage If the battery leaks onto skin or clothing wash the area immediately Battery fluid can cause a skin rash and damage fabric If battery fluid gets in eyes DO NOT rub rinse with clear water i...

Page 48: ...battery cover latch and slide the battery bay cover away from the system Figure 2 5 Removing the Cover 4 Place a finger in the notch on the battery and lift the battery out of the system The notch has an arrow next to it CAUTION Always lift the battery out of the system by the notch Fail ure to do so can damage the battery terminals Figure 2 6 Removing the Battery ...

Page 49: ...s Fit the battery alignment groove over the tab inside the bay Lower the battery into the battery compartment pressing gently to secure the terminal connections Figure 2 7 Inserting the Battery Pack 6 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 Figure 2 8 Replacing the Cover 7 T...

Page 50: ... odor Keep the battery dry and away from water Keep metal objects away from battery terminals Metal objects in contact with the terminals can cause a short circuit and damage If the battery leaks If the battery leaks onto skin or clothing wash the area immediately with clean water Battery fluid can cause a skin rash and damage fabric If battery fluid gets into eyes DO NOT rub rinse with clear wate...

Page 51: ...fe While on the road it is important to be aware of the simple things you can do to extend the life of the system s main battery One way is to keep the LCD backlight setting to Standard instead of Full You can toggle between these two settings by pressing the function keys Fn F5 Or slide the brightness control to a dimmer level Using the DC Car Adapter Another way to power the NEC Versa is via car...

Page 52: ...he status bar provides an easy way to detect system status Different graphic icons appear on the LCD bar indicating that a device is accessed an operation performed or a power mode is activated Power LED Lights green when the computer is powered on and blinks green in the suspend mode Lights amber and blinks at low battery levels Suspend Resume Button Press the button for Suspend mode press again ...

Page 53: ...to let the user determine system status as follows Suspend appears when the system is in Suspend mode Power Management shows current power management mode Diskette Drive 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 drive Caps Lock appears when Caps Lock is used Scroll Lock indicate...

Page 54: ...between LCD CRT TV out and simultaneous modes LCD and CRT Fn F4 Standby On Off Fn F5 Backlight toggles the backlight between standard and full Fn F6 Speaker Volume toggles speaker volume between high medium low and off Fn F7 Power Management P M sets P M levels to highest performance longest battery life custom values or off Fn F8 Expand 640 X 480 applications to fill the panel Fn F12 Scroll Lock ...

Page 55: ...S Flash Protection Switch The default setting is ON Change the setting to OFF when you update your system s basic input output system or BIOS flash memory See Updating the System BIOS to complete this procedure Switch 2 Password Override Switch The default setting is OFF For exam ple if you forget your password and cannot access the data on your NEC Versa change the setting to ON and your current ...

Page 56: ...r or Technical Support Services representa tive can help you determine this If you are informed that the default BIOS needs an upgrade to receive a copy of the BUD contact the NECCSD Diskette Fulfillment Center at 800 842 6446 or NECCSD Cus tomer Service and Technical Support at 800 632 4525 Fax 978 635 4100 You should only use the BIOS upgrade diskette for your specific model NOTE If you purchase...

Page 57: ... that no peripheral devices are attached 2 Locate and remove the two Phillips head screws on the bottom of the Versa 6220 30 60 that secure the speaker caps Put the screws in a safe place for reassembly Figure 2 13 Locating the Speaker Cap Screws 3 Turn the NEC Versa notebook over and open the LCD panel Figure 2 14 Removing the Speaker Caps ...

Page 58: ... remove them 5 Gently lift up the edge of the keyboard nearest the LCD and slide the keyboard towards the LCD screen to release the tabs that secure it CAUTION Be careful not to disconnect the keyboard or keyboard cable entirely from the system Figure 2 15 Lifting the Keyboard Figure 2 16 Positioning the Keyboard ...

Page 59: ...g See Setting Switches for switch functions and settings CAUTION Never use a lead pencil ball point pen or ink pen to change switch settings Figure 2 17 Dip Switches NOTE The system memory expansion slots are also located underneath the keyboard Therefore if you need to install DIMM modules you might want to do so while the system is already disassembled 8 Reassemble the system as follows Lift up ...

Page 60: ... BIOS update 1 Make sure that the computer is operating under AC power and that the power is off Insert the BIOS Update diskette into diskette drive A 2 Power on the computer with the diskette in drive A The computer boots and automatically loads the utility A message similar to the following appears WARNING The BIOS Update Procedure is about to begin press ENTER to continue To abort remove the di...

Page 61: ... the working status of components through an automatic power on self test POST The test checks the system configuration for any discrepancies One beep means that POST is successful If any problems in data transfer or hardware exist an error message appears If the message is a CMOS settings wrong message press F2 to enter the Setup utility Use the Arrow Keys to review the settings and make any nece...

Page 62: ...vice work CH 2 Timer Error Most ISA computers include two timers There is an error in timer 2 Contact your NECCSD service representative for service work CMOS Battery State Low CMOS RAM is powered by a battery The battery power is low Contact your NECCSD service representative to replace the CMOS battery CMOS Checksum Failure After CMOS RAM values are saved a checksum value is generated for error ...

Page 63: ...e KB interface error There is an error in the keyboard connector Contact your NECCSD service representative for service Off Board parity Error Parity error in memory module installed in an expansion slot Contact your NECCSD service representative to be sure that the memory module is installed correctly The error format is OFF BOARD PARITY ERROR ADDR HEX XXXX XXXX is the hex address where the error...

Page 64: ...the motherboard is not functioning 5 Processor Error The CPU on the motherboard generated an error 6 8042 Gate A20 Failure The keyboard controller 8042 may be bad The BIOS cannot switch to protected mode 7 Processor Exception Interrupt Error The CPU generated an exception interrupt 8 Display Memory Read Write Error The system memory is faulty This is not a fatal error 9 ROM Checksum Error The ROM ...

Page 65: ...POST via error messages verifies that any optional memory that you installed was installed correctly integrates user defined security features Accessing Setup To access Setup press F2 at the power on prompt With an Error at POST You will need to use the Setup utility if the system detects an error during POST It prompts you with double beep sound and a message Press F1 to resume If you press F1 th...

Page 66: ...etup Power Management Setup Boot Device Setup Peripheral Setup Change User Password Change Supervisor Password Auto Configuration with Defaults Save Settings and Exit Exit Without Saving Advanced CMOS setup for configuring system options Figure 2 19 Setup Main Menu Use the up and down arrow keys located on the lower right corner of the keyboard to toggle through the Setup menu items How to Use Set...

Page 67: ...ect the boot configuration of AMIBIOS Yes indicates the system will boot to a Plug and Play aware Operating System such as Windows 95 tm When set to Auto the system will detect Plug and Play OS s Exit Sel Modify Color Figure 2 20 Advanced CMOS Setup Menu Parameters The left part of the screen This area lists parameters and their current settings Available Options The right part of the screen This ...

Page 68: ...me Tab moves the cursor from hour to minute to second Esc In the Main Menu screen press Esc to display the Quit without saving prompt Also press Esc to exit Setup menus and return to the Main Menu F3 F4 Changes the screen color Checking Setting System Parameters See the following table for a list of parameters their factory default settings and alternate settings A description of each setting foll...

Page 69: ...Defined CD ROM LS 120 Pre defined types Not Installed Off Off 0 1 2 3 4 5 Off User Defined CD ROM LS 120 Pre defined types Not Installed Off Off Off 0 1 2 3 4 5 Off Disabled Not installed User Defined CD ROM LS 120 automatically detected 48 64 96 128 MB Advanced CMOS Setup Plug and Play Aware O S BootUp USB Configuration BootUp Num Lock LCD Panel View Expansion Password Check PS 2 Port Hot Swap In...

Page 70: ...5 min Off 30 45 sec 1 2 4 6 8 10 15 min Off Off Off Off 1 2 4 6 8 10 15 min Off 5 10 15 20 25 30 min STF Disabled Full Standard Off Off On On Set time in 5 min increments when wake up is set to On Boot Device Setup Boot DS IDE 1st Boot Device 2nd Boot Device 3rd boot Device 4th Boot Device Try Other Boot Devices Docking Station Video No LS 120 CD ROM Floppy IDE 0 Yes Dock Stn Yes Floppy CD ROM SCS...

Page 71: ...d If the docking station joystick is set to Auto use I O Address 201 BIOS Setup Menus Read the following descriptions for explanations of items that appear in the BIOS Setup menus as listed in the preceding table See the item specific help that appears on the Setup screen for more details Standard CMOS Setup When you select the Standard CMOS Setup screen you will see system Time and system Date pa...

Page 72: ...hether NumLock is On or Off at system startup LCD Panel View Expansion Specifies whether the panel view is reduced off or expanded on Password Check Specifies whether the system prompts you to enter a pass word when entering BIOS setup booting the system and resuming from sus pend PS 2 Port Hot Swap Specifies whether or not you can swap a PS 2 device during system operation Internal Mouse Specifie...

Page 73: ...the amount of time before your video shuts down Audio Device Time out Selects the amount of time before your audio device shuts down Standby Time out Allows you to select the system standby timeout pe riod Auto Suspend Time out Defines how much time elapses before the system automatically enters Suspend Mode Suspend Option Allows you to specify either Suspend or Save to File STF as the default pow...

Page 74: ...e connection locations between the system and the Input Output I O ports This menu also lets you specify different port assignments as needed NOTE If you disable a device in Peripheral Setup you cannot enable or assign it using the Windows 95 device manager The device is not listed in the Win dows 95 device list To control the device using the Windows 95 device manager select any setting other tha...

Page 75: ...nfiguration selection You are not prompted to enter a password until you set a supervisor password Your sys tem is not protected until you set a user password NOTE You must set the supervisor password be fore the BIOS Setup utility allows you to set a user password Using BIOS Setup to Set Power Management Power Management Setup allows you to use the factory defined power savings level Longest Life...

Page 76: ...ect STF 5 Save the settings and exit BIOS Setup There are two ways to invoke the NEC Versa s STF feature one automatic and one man ual After 30 minutes of inactivity your NEC Versa automatically invokes STF pro vided you have configured STF in the BIOS Setup utility You can manually invoke STF by pressing Fn Suspend simultaneously before you leave your NEC Versa NOTE When the status bar reads that...

Page 77: ...ecklist First check the items in the following list If these items don t help see the table that follows the list Sets date and time Power is on to the computer The electrical outlet to which your AC adapter is connected is working Test the outlet by plugging in a lamp or other electrical device All cables are tightly connected The display setting is configured correctly The display brightness con...

Page 78: ... press the Suspend button to resume operation Battery power does not last long Use power saving modes Fully charge and discharge the battery several times to recondition it Replace the battery Information on the LCD screen is difficult to see Adjust the brightness control An optional component does not work Make sure the component is securely installed or connected Verify that the system parameter...

Page 79: ... either condition is true the system displays an invalid configuration information mes sage To continue start up procedures press F2 and run the Setup utility to set current system pa rameters If an error message appears before the operating system starts look up the error message in the following table Follow the instructions If you see other error messages the hardware might need repair NOTE Whe...

Page 80: ...clude two timers There is an error in timer 2 Contact your NECCSD service representative for service work CMOS Battery State Low CMOS RAM is powered by a battery The battery power is low Contact your NECCSD service representative to replace the CMOS battery CMOS Checksum Failure After CMOS RAM values are saved a checksum value is generated for error checking The previous value is different from th...

Page 81: ...eyboard POST routines KB interface error There is an error in the keyboard connector Contact your NECCSD service representative for service Off Board parity Error Parity error installed in an expansion slot Contact your NECCSD service representative to be sure that the memory module is installed correctly The error format is OFF BOARD PARITY ERROR ADDR HEX XXXX XXXX is the hex address where the er...

Page 82: ...essor Error The CPU on the motherboard generated an error 6 Gate A20 Failure The keyboard controller may be bad The BIOS cannot switch to protected mode 7 Processor Exception Interrupt Error The CPU generated an exception interrupt 8 Display Memory Read Write Error The system video adapter is either missing or its memory is faulty This is not a fatal error 9 ROM Checksum Error The ROM checksum val...

Page 83: ...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 Have you checked the AUTOEXEC BAT and CONFIG SYS files for errors Is the Suspend Mode activated on the LCD Status Bar Press any key or press the Power swit...

Page 84: ...Voltage is present inside the system unit and LCD even after the system is turned off Cleaning the Notebook s Exterior Use the steps below to clean the outer surface of the system 1 Power off the system and remove all battery packs Unplug all cables connected to the system 2 Wipe the outside of the system unit keyboard and display with a soft clean cloth Remove stains with a damp almost dry cloth ...

Page 85: ...a head cleaning diskette in the disk drive to prolong the life of the drive and to help maintain data integrity Here are some maintenance procedures to use when servicing a hard disk Always back up the data files from the hard disk Run a virus detecting program to check for possible virus infected areas on the hard disk Use the preinstalled ScanDisk program to correct any errors found in the direc...

Page 86: ...o not short the battery leads or connect the battery with reversed polarity Never attempt to charge the battery packs in any way other than as described in this manual and the User s Guide Always charge the battery packs as soon as possible after a low battery indication Maintaining the LCD Quality When it comes to screen problems heat plays a big part After a good working session the typical rout...

Page 87: ...e 1 Hard Disk Drive 4 5 2 Diskette Drive installed in VersaBay II 4 7 3 Main Battery Pack Li Ion Type 4 8 4 Removing the Keyboard 4 10 5 Memory Upgrade 4 12 6 LCD and Top Cover 4 15 7 VersaGlide 4 18 8 LCD Status Bar and Power Button 4 19 9 Bridge Battery CMOS Battery Buzzer 4 20 10 Sound Board and Microphone 4 21 11 IR Assembly and Graph Board 4 21 12 CPU Assembly 4 23 13 I O Board 4 24 When disa...

Page 88: ...n the VersaBay II Check the top of the hard drive for a blue dot If the drive case has the blue dot on it you can use the drive in either the drive bay or the VersaBay II 1 Check that the NEC Versa power is off 2 Turn the NEC Versa upside down with the front of the unit facing you 3 Remove the drive cover as follows Locate the drive cover screw Remove screw Push the drive cover release latch up wh...

Page 89: ...sest to the connector While maintaining pressure slide the drive towards the front of the system CAUTION Do not lift the drive out of the system before re leasing it from the system connector Doing so can damage the connectors Once the drive is disconnected lift the drive up and out of the system Figure 4 2 Removing the Hard Disk Drive ...

Page 90: ...facing you 3 Locate the VersaBay II release latches on the bottom of the unit Figure 4 3 VersaBay II Release Latches 4 Slide the front latch towards the hard disk drive side of the system and hold it 5 Push the middle latch towards you until the diskette drive pops part way out of the unit 6 Continue to hold the latch near the front of the system to the left and pull the diskette drive the rest of...

Page 91: ...n 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 1 Save your files exit Windows and press the Suspend button or turn off system power 2 Close the LCD and turn the system o...

Page 92: ...away from the system Figure 4 5 Removing the Battery Compartment Cover 4 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 Failure to do so can damage the bat tery terminals Figure 4 6 Removing the Battery ...

Page 93: ... two Phillips head screws on the bottom of the NEC Versa that secure the speaker caps Put the screws in a safe place for reassembly Figure 4 7 Locating the Speaker Cap Screws 3 Turn the NEC Versa over and open the LCD panel 4 Locate the two speaker caps slide each one toward the outside edge of the sys tem and remove it Figure 4 8 Removing the Speaker Caps ...

Page 94: ...keyboard and place it face down on the VersaGlide Mem ory Upgrades do not require disconnecting the keyboard ribbon cable from the graph board To disassemble the NEC Versa further you need to disconnect the keyboard ribbon cable at P15 and remove the keyboard 7 Memory Upgrades are detailed in the next section Instructions to further disas semble the NEC Versa are provided following Memory Upgrade ...

Page 95: ...ble are 32 48 64 96 and 128 MB depending on which two of the listed dual inline memory modules DIMM are used 16 MB memory module 32 MB memory module 64 MB memory module The following table shows the memory expansion possibilities Table 4 2 System RAM Expansion Base Memory Expansion Memory Total Memory 32 MB 16 MB 48 MB 32 MB 32 MB 64 MB 32 MB 64 MB 96 MB 64 MB 64 MB 128 MB Replacing the provided 3...

Page 96: ...on the DIMM Figure 4 11 DIMM Features 3 Locate the DIMM expansion port 4 Hold the DIMM at a 45 degree angle and align the DIMM contacts with the socket in the system Push the connector into the socket 5 Press down on the edge of the DIMM opposite the contacts until the lock tabs on the sides snap into place securing the module Figure 4 12 Installing the DIMM ...

Page 97: ...s Press the locking tabs away from the sides of the DIMM and hold while gently lifting on the edge of the DIMM When the edge of the DIMM pops up and is at approximately a 60 degree an gle pull the DIMM from the socket Figure 4 13 Removing an installed DIMM NOTE The system switches are also located under neath the keyboard ...

Page 98: ...s Turn the computer over with the VersaBay II slot facing towards you Locate the 10 screws that secure the bottom base unit cover In all there are 4 long screws 6 short screws Figure 4 14 Removing the Bottom Base Screws Remove the remaining screws two of the ten were removed when removing the keyboard Turn the laptop over and remove three screws There are 2 medium screws and 1 short screw ...

Page 99: ...fully detach the bottom base unit cover from the top cover To lift off the top cover place your left hand in the PC cards slot bay and pull the left corner of the system upward with your right hand Be careful not to lift the cover up too far until you have disconnected the LCD cables see the next step ...

Page 100: ...ld Service Guidelines 4 17 3 Disconnect the LCD cables from connector P6 on the Graph board Also discon nect the speaker cables P17 and VersaGlide cables P14 Figure 4 16 Separating Top Cover from Base Unit ...

Page 101: ...4 18 Field Service Guidelines VersaGlide Remove three screws on the underside of the top cover to remove the VersaGlide Figure 4 17 Removing the VersaGlide ...

Page 102: ...iously described 2 When the LCD and top cover are removed the Power button sets unattached on the Graph board over the Power switch 3 Remove the LCD status bar as follows Locate the ribbon cable that attaches to the Graph board via connector P9 Use the tip of a screwdriver and carefully open the connector tabs Lift up the LCD status bar Figure 4 18 LCD Status Bar ...

Page 103: ...ery disconnect the cable from connector P11 on the Graph board and remove the bridge battery 3 Remove the CMOS battery as follows Locate the cable on the CMOS battery Disconnect the cable from connector P13 on the Graph board and lift the CMOS battery out of the base unit 4 To remove the buzzer disconnect the buzzer cable from P12 on the Graph board and remove the buzzer Figure 4 19 Removing Bridg...

Page 104: ... 4 Lift the sound board straight up and disconnect it from the graph board IR Assembly and Graph Board Remove the IR assembly and Graph board as follows 1 Remove the following as previously described LCD top cover keyboard LCD status bar and power button bridge battery CMOS battery and buzzer 2 Disconnect the cable from connector P10 and remove screw securing IR board and lift out the IR assembly ...

Page 105: ...4 22 Field Service Guidelines Figure 4 20 Removing IR Assembly and Graph Board ...

Page 106: ...as previously described LCD top cover keyboard LCD status bar and Power button Sound Board Graph Board 2 Disconnect the fan cable from connector P18 3 Remove insulator sheet from CPU and fan assembly 4 Remove 4 screws from the CPU and fan assembly 5 Gently lift the CPU assembly out of connectors P3 and P4 on the Graph board ...

Page 107: ...e 4 21 Removing the CPU Board from the Graph Board I O Board Remove the I O board as follows 1 Remove the following as previously described LCD top cover keyboard LCD status bar Sound board Bridge battery CMOS battery buzzer Graph board ...

Page 108: ... The next section contains the NEC part numbers and illustrated parts breakdown IPB fig ure for the NEC Versa The following figure shows the system exploded view diagram or IPB Table 4 3 lists field replaceable parts and corresponding part numbers Review the entire exploded diagram to see how each part is connected or assembled Try to sub divide the entire diagram paying particular attention to th...

Page 109: ...4 26 Field Service Guidelines Figure 4 23 NEC Versa 6220 30 60 Illustrated Parts Breakdown ...

Page 110: ...LIA 128WC 012 Europe 128WC 012 808 897300 001A 808 897300 002A 808 897300 003A 808 897300 004A 808 897300 101A 13 VersaGlide Logitech TP2 808 897316 001A 14 Sound Board Assembly 158 057396 000B 15 Fan 808 876290 002A 16 CPU 200MHz Assembly 233MHz Assembly 266MHz Assembly 158 057398 000A 158 057398 001A 158 057398 002A 17 HDD Compartment Cover Cap 17mm 12 5mm 136 241429 101A 136 240831 103A 18 Infr...

Page 111: ...2 101A Hard Drive 2 1 GB 3 2 GB 17mm 4 X GB 5 X GB OP 220 62008 OP 220 62010 OP 220 62012 OP 220 62011 Hinge Cap center 136 240921 101A Hinge Cap left 136 629333 101A Hinge Cap right 136 629334 101A Insert Foam End Cap 2 per box required 158 041039 000 Inverter Assembly 13 3 XGA 808 892091 001C LCD Cover XGA 13 3 Assembly 136 240920 101A LCD Top Cover Keyboard Cover Assembly 136 242122 001A LCD Pa...

Page 112: ...To download files provides software drivers and the latest ROM BIOS 1 978 635 4706 NECCSD Customer Service and Technical Support Center In the U S call 1 800 632 4525 Listen to the automated attendant 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 ot...

Page 113: ... obtain up to date product application notes installation procedures troubleshooting tips data sheets techni cal information bulletins price lists and other information Information can be obtained from the FaxFlash service 24 hours a day 7 days a week Us ing a touch tone telephone call the FaxFlash number order the desired information through the automated attendant and FaxFlash will automatically...

Page 114: ...ted instructions for ordering a document or catalog Press 2 for an introduction to FaxFlash followed by the automated instructions for ordering a document or catalog 5 When asked by the automated attendant enter your fax number and telephone number 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 i...

Page 115: ...dix A Connector Locations and Pin Assignments Figure A 1 and Table A 1 show Graph board connectors The remaining tables provide pin assignments for additional system connectors Figure A 1 Graph Board Layout ...

Page 116: ...n P6 LCD Screen P7 P8 DIMM Connectors P9 LCD Status Bar P10 Infrared Assembly Connector P11 Bridge Battery P12 Buzzer P13 CMOS Battery P14 VersaGlide Assembly Connector P15 Keyboard P17 Speaker Connector P24 Sound Board P27 VersaBay II SW1 Power Switch SW2 Suspend Switch Figure A 2 I O Board Layout ...

Page 117: ...t Connector P8 External Monitor P9 Expansion Connector P10 Parallel Port P11 PS 2 Keyboard Mouse Connector P12 AC Adapter Connector P13 TV Output Jack Table A 3 Keyboard Mouse Connectors Pin Signal 1 Keyboard Data 2 Mouse Data 3 Ground 4 5V 5 Keyboard Clock 6 Mouse Clock Table A 4 Serial Port Connector Pin Assignments Pin Signal 1 Data Carrier 2 Receive Data 3 Transmit Data 4 Data Terminal Ready 5...

Page 118: ...round 7 Ground 8 Ground 9 5V PnP VESA Vcc 10 Ground 11 OPT2 12 PnP VESA Data 13 Horizontal Sync 14 Vertical Sync 15 PnP VESA Clock Table A 6 Parallel Printer Pin Assignments Pin Signal 1 Strobe 2 Data Bit 0 3 Data Bit 1 4 Data Bit 2 5 Data Bit 3 6 Data Bit 4 7 Data Bit 5 8 Data Bit 6 9 Data Bit 7 10 Acknowledge 11 Busy 12 PE 13 Select ...

Page 119: ... 16 Initialize 17 Select In 18 25 Ground Table A 7 Power Connector Pin Signal 1 Ground 2 DCSYS 3 DCCHG Table A 8 Hard Disk Drive Connector Pin Signal 1 HDD Access LED 2 5V 3 Chip Select 0 4 5 5 Chip Select 1 6 5V 7 Address 0 8 5V 9 Address 2 10 5V 11 Address 1 12 5V 13 Diagnostic 14 Not Used 15 IRQ 16 Not Used 17 Not Used ...

Page 120: ...S Select 20 IO Write 21 I O Read 22 Not Used 23 Data0 24 Data1 25 Data15 26 Data14 27 Data2 28 Data13 29 Data3 30 Not Used 31 Data12 32 Ground 33 Data4 34 Ground 35 Data4 36 Ground 37 Data5 38 Ground 39 Data10 40 Ground 41 Data6 42 Ground 43 Data9 44 Ground 45 Data7 46 Not Used 47 Ground 48 Ground 49 RESET 50 Ground ...

Page 121: ...00 16 80x25 8x8 256 3 Text EGA 640x350 16 80x25 8x14 256 VGA 720x400 16 80x25 9x16 256 4 Graph All 320x200 4 40x25 8x8 256 CGA 320x200 4 gray 80x25 8x8 256 5 Graph EGA 320x200 4 gray 80x30 8x8 256 VGA 320x200 4 80x30 8x8 256 6 Graph All 640x200 2 80x25 8x8 256 MDA 720x350 Mono 80x25 9x14 256 7 Text EGA 720x350 Mono 80x25 9x14 256 VGA 720x400 Mono 80x25 9x16 256 D Graph E VGA 320x200 16 40x25 8x8 2...

Page 122: ...32K 80x30 8x16 1024 41 Graph Pack Pix 640x480 64K 80x30 8x16 1024 42 Graph Pack Pix 800x600 32K 100x37 8x16 1024 43 Graph Pack Pix 800x600 64K 100x37 8x16 1024 44 Graph Pack Pix 1024x768 32K 128x48 8x16 1536 45 Graph Pack Pix 1024x768 64K 128x48 8x16 1536 64 Graph Planer 1024x768 16 128x48 8x16 512 6A Graph Planar 800x600 16 100x37 8x16 256 70 Graph Pack Pix 640x480 256 80x30 8x16 512 71 Graph Pac...

Page 123: ...5 175 31 5 70 256 3 Text EGA 640x350 16 80x25 8x14 25 175 31 5 70 256 VGA 720x400 16 80x25 9x16 28 322 31 5 70 256 4 Graph All 320x200 4 40x25 8x8 25 175 31 5 70 256 CGA 320x200 4 gray 80x25 8x8 25 175 31 5 70 256 5 Graph EGA 320x200 4 gray 80x30 8x8 25 175 31 5 70 256 VGA 320x200 4 80x30 8x8 25 175 31 5 70 256 6 Graph All 640x200 2 80x25 8x8 25 175 31 5 70 256 MDA 720x350 Mono 80x25 9x14 28 322 3...

Page 124: ... 37 9 46 9 53 7 60 75 85 512 44 Graph Pack Pix 1024x768 32K 128x48 8x16 65 78 75 48 4 60 60 75 1536 45 Graph Pack Pix 1024x768 64K 128x48 8x16 65 78 75 48 4 60 60 75 1536 50 Graph Pack Pix 640x480 16M 80x30 8x16 25 175 31 5 36 31 5 37 5 43 3 60 75 85 1024 52 Graph Pack Pix 800x600 16M 100x37 8x16 40 37 9 60 1536 6A Graph Planar 800x600 16 100x37 8x16 40 49 5 56 25 37 9 46 9 53 7 60 75 85 256 64 Gr...

Page 125: ... Text 80x25 640x400 8x16 16 256 12 Graph 80x30 640x480 8x16 16 256 13 Graph 40x25 320x200 8x8 256 256 30 Graph 80x30 640x480 8x16 256 512 31 Graph 80x25 640x400 8x16 256 256 40 Graph 80x30 640x480 8x16 32K 1024 41 Graph 80x30 640x480 8x16 64K 1024 50 Graph 80x30 640x480 8x16 16M 1024 71 Graph 80x25 640x400 8x16 256 256 Linear Addressing Mode Table B 9 Panning NTSC PAL TV Display Mode Mode Mode Typ...

Page 126: ...M reader 1 12 Chip types 1 17 Cleaning internal components 4 2 outer surface 4 1 CMOS battery 1 15 CPU 1 18 CRT connector pin assignments A 4 Custom settings power management 2 33 D DC car adapter 2 11 Default power management settings 1 24 Dip switches 2 16 Disassembly guidelines 4 4 Diskette controller serial interface parallel interface 1 19 drive 1 7 1 12 drives 2 32 Display 1 26 Docking port ...

Page 127: ...C Versa disassembly sequence 4 4 NEC Versa video modes B 1 NTSC signal 1 9 O Operating controls 2 12 Optional battery charger 2 6 Ordering information from FaxFlash 4 30 P PAL signal 1 9 Parallel interface enhanced capabilities port 1 16 Parallel port 1 11 Parallel port pin assignments A 5 Password Check 2 32 Override switch 2 15 protection 2 35 PC card slots 1 10 Performing a BIOS update 2 20 Plu...

Page 128: ...ode 2 33 Switch settings 2 15 System disassembly bridge battery 4 20 4 21 buzzer 4 20 4 21 CMOS battery 4 20 4 21 CPU board 4 23 diskette drive 4 7 hard disk drive 4 5 heat shield 4 21 I O board 4 24 LCD and top cover 4 15 main battery pack 4 8 metal keyboard support 4 19 microphone 4 23 sound board 4 21 status bar 4 19 VersaGlide 4 19 icons 2 13 System date 2 31 parameters 2 21 setup 2 1 specific...

Page 129: ...e the receiving antenna Increase the separation between the equipment and receiver Connect the equipment to an outlet on a circuit different from the one to which the receiver is connected To meet FCC standards shielded cables and power cords are required to connect this device to a personal computer or other Class B certified device Canadian Department of Communications Compliance Statement This ...

Page 130: ...manufacturer s instructions ATTENTION Il y a danger d explosion s il y a replacement incorrect de la batterie Remplacer uniquement avec une bat terie du même type ou d un type recommandé par le constructeur Mettre au rébut les batteries usagées conformément aux instructions du fabricant BATTERY DISPOSAL The bridge battery is made of nickel metal hydride NiMH The main battery and CMOS battery are m...

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