Panasonic Touchbook CF-50 Series User manual

ORDER NO. CPD0209020C1
Noteb
CF-50
ook Computer
This is the Service Manual for
the following areas.
M …for U.S.A. and Canada
Model Number Reference
The following models are numbered in accordance with the types of CPU, LCD and HDD etc. featured by product.
Model No. CF-5012 3 4 U 56
1: CPU type
Y: Mobile Intel® Pentium®4 Processor 1.9 GHz-M
2
: LCD type
5: 15.0” TFT Color
3
: HDD type / RAM size
K: 40 GB / 256 MB
V: 40 GB / 256 MB /Smart Card
4
: Drive / Modem – LAN
G: Floppy Disk Drive / CD-ROM Drive / Combo H: Floppy Disk Drive / DVD-ROM Drive / Combo
N: Floppy Disk Drive / DVD-ROM & CD-R/RW Drive (Combo Drive) / Combo
L: Floppy Disk Drive / CD-R/RW Drive / Combo
P: Floppy Disk Drive / CD-ROM Drive / Wireless LAN
Q: Floppy Disk Drive / DVD-ROM Drive / Wireless LAN
S: Floppy Disk Drive / DVD-ROM & CD-R/RW Drive (Combo Drive) / Wireless LAN
R: Floppy Disk Drive / CD-R/RW Drive / Wireless LAN
5: Operation System
D: Microsoft® Windows® 2000
F: Multi-Language (Microsoft® Windows® 2000)
G: Multi-Language (Microsoft® Windows® XP Professional)
K: Microsoft® Windows® XP Professional
6: Area
M: Refer to above area table

2-1

2-2
LASER SAFETY INFORMATION
For U.S.A.
Class 1 LASER-Product
This product is certified to comply with DHHS Rules 21 CFR Subchapter J.
This product complies with European Standard EN60825 (or IEC Publication 825)
For all areas
This equipment is classified as a class 1 level LASER product and there is no hazardous LASER radiation.
Caution:
(1) Use of controls or adjustments or performance of procedures other than those specified herein may result in
hazardous radiation exposure.
(2) The drive is designed to be incorporated into a computer-based system or unit which has an enclosing cover.
It should never be used as a stand alone drive.
Danger:
The serviceman should not remove the cover of drive unit and should not service because the drive unit is a non-
serviceable part.
Please check DANGER label on PD-drive unit.
• Unplug the AC power cord to the equipment before opening the top cover of the drive.
• When the power switch it on, do not place your eyes close to the front panel door to look into the interior of the unit.
LASER Specification
Class 1 level LASER Product
Wave Length: DVD 658±8 nm
CD 775~815 nm
Laser safety information is appropriate only when drive with laser is installed.

CONTENTS
1 Specifications
..............................................................
4
2 Names and Functions of Parts
.................................................
6
3 Starting Up/Shutting Down
....................................................
8
4 Block Diagram
............................................................
11
5 System Memory Map
........................................................
13
6 I/O Adress Map
.............................................................
14
7 Diagnosis Procedure
.........................................................
15
8 Power-On Self Test (Boot Check)
...............................................
16
9 List of Error Codes
..........................................................
17
10 Diagnosis
.................................................................
19
11 Diagnostic Test
............................................................
27
12 Self Diagnosis Test
..........................................................
28
13 Wiring Connection Diagram
...................................................
34
14 Disassembly/Reassembly
.....................................................
35
15 Exploded View
.............................................................
43
16 Replacement Parts List
......................................................
47
3

This page provides the specifications for the basic model CF-50Y5KNUDM CF-50Y5KNUKM. The model number will change
depending on the configuration of the unit, such as, CPU speed, memory size, HDD size, Operating System, LCD type, and
whether a CD-ROM drive, a DVD-ROM drive, a CD-R RW drive, or a DVD-ROM&CD-R RW drive is included or not.
To check the model number:
Check the bottom of the computer or the box the computer came in at the time of purchase.
“Setup Utility”) and select [Information] menu.
Confirm the required information by checking the following items.
CPU speed: [CPU Speed]
Memory size: [System Memory]
Hard disk drive size: [Primary Master]
Mobile Intel
®
Pentium
®
4 Processor 1.9 GHz-M
L2 (Second) Cache Memory: 512 KB
256MB (768MB Max. )
32MB
15.0 type (TFT)
256/65536/16M colors (640 x 480 dots/800 x 600 dots/1024x768 dots/1280 x 1024 dots/
1600 x 1200 dots)
256/65536/16M colors (640 x 480 dots/800 x 600 dots/1024x768 dots/1280 x 1024 dots/
1600 x 1200 dots/2048x1536 dots)*2
40 GB*3
CPU
Memory (Expandable to)
Video Memory
LCD Type
Displ ayed Color s*1
External Display
Hard Disk Drive
To check CPU speed, memory size and the hard disk drive (HDD) size:
Run the Setup Utility (
Main Spacifications
Windows 2000 : Setting 256 color depth or the resolution of 640 x 480 is not recommended.
Windows XP : 256 color depth and the resolution of 640x480 are not supported.
*31GB = 109bytes
*2Maximum resolution depends on the specifications of the external display.
Windows 2000 : Setting 256 color depth or the resolution of 640 x 480 is not recommended.
Windows XP : 256 color depth and the resolution of 640x480 are not supported.
*1A 16 M color display is achieved by using the dithering function.
1 Specifications
4

*1If an unbalanced disc (e.g., a disc with which the balance has been displaced from the center) is inserted, the speed may become slower if
there are large vibrations while the disc is rotating.
*2Depending on the disc, the writing speed may become slower.
*3Only a RAM card designed for PC2100 can be added.
*4Use only a monaural condenser microphone.
*5Varies depending on the usage conditions.
*6The AC adaptor is compatible with power sources up to 240 VAC adaptor.
This computer is supplied with a 125 VAC compatible AC cord.
*7Approx. 0.9 Wwhen the battery pack is fully charged (or not being charged) and the computer is OFF.
Approx. 1.5 Wwhen the Wake up from LAN function has been enabled.
*8Rated power consumption.
Keyboard
Floppy Disk Drive
Optical Disc CD-ROM Drive*1
DVD-ROM Drive*1
CD-R/RW Drive
DVD-ROM &
CD-R/RW Drive
Slots
Interface
Pointing Device
Speaker
Utility Programs
Sound
Battery Battery Pack
Clock Battery
AC adaptor*6
Power Consumption*7
Environment
Physical Dimensions (W X H X D)
Weight
87keys
720 KB/1.44 MB (two-mode)
CD-ROM read 24X speed (Max.)
CD-ROM read 24X speed (Max.)
DVD-ROM read 8X speed (Max.)
CD-ROM read*124X speed (Max.)
CD-R write*2 4X speed, 8X speed, 16X speed (Max.), 24X speed (Max.)
CD-RW write 4X speed, 8X speed, 10X speed
CD-ROM read*124X speed (Max.)
DVD-ROM read*18X speed (Max.)
CD-R write*2 4X speed, 8X speed, 16X speed (Max.), 24X speed (Max.)
CD-RW write 4X speed, 8X speed, 10X speed
PC Card Slots Two Type Ior Type II, or one Type III
Allowable current 3.3 V: 400 mA, 5 V: 400 mA
(total for two slots)
RAM Module Slot*3200-pin, SO-DIMM, DDR-SDRAM,
PC2100 Compliant
Parallel Port Dsub 25-pin female
External Display Port Mini Dsub 15-pin female
Serial Port Dsub 9-pin male
Microphone Jack*4Miniature jack, 3.5 DIA
Headphone Jack Miniature jack, 3.5 DIA
Impedance 32 Ω, Output Power 4 mW x 2
External Keyboard/Mouse Port Mini DIN 6-pin female
Expansion Bus Connector Dedicated 100-pin female
USB Port 4-pin x 2
Modem RJ-11 Data: 56 kbps (V.90 & K56flex) FAX:14.4 kbps
LAN RJ-45 IEEE 802.3 10Base-T
IEEE 802.3u 100Base-TX
IEEE1394 Interface Connector 4-pin x 1
Touch Pad
Stereo Speaker
Setup Utility, DMI Viewer, Acrobat Reader, Hard disk data erase utility
WAVE and MIDI playback
Li-ion 11.1 V, 6.3 Ah
Operating Time*5Approx. 1.5 hours - 3.5 hours
Charging Time*5Power On Approx. 6 hours
Power Off Approx. 3.5 hours
Coin type lithium battery 3.0 V
Input 100 V- 240 VAC, 50 Hz/60 Hz Output 15.6 VDC, 5.0 A
Approx. 70 W*8/ Approx. 90 W(maximum when recharging in the ON state)
In use Temperature 5 °C to 35 °C {41 °F to 95 °F}
Humidity 30%to 80%RH (No condensation)
Not in use Temperature -20 °C to 60 °C {-4 °F to 140 °F}
Humidity 30%to 90%RH (No condensation)
325 mm X 47 mm X 278 mm {12.8 ”X 1.9 ”X 10.9 ”}
Approx. 3.5 kg {Approx. 7.7 lb.}
Other Specifications
5

2 Names and Functions of Parts
For information on the key combi-
nations available.
There are dots near function keys
to enable you to locate the key’s
position by touch.
LED Indicators
Before using the computer for the first time,
carefully read the [Limited Use License
Agreement]. If you agree to the conditions,
remove the seal.
To adjust the volume: Fn + F5 or F6
Speaker on/off: Fn + F4
Speakers
Touch Pad
LED Indicators
Power status
Battery pack status
Use this connector to connect
headphones or amplifier-equipped
speakers. Audio output from the
internal speaker is disabled when
headphones or external speakers
are connected.
Use only a monaural condenser microphone.
Using an input source other than a monaural
condenser microphone may not allow audio to
be input or may damage the equipment.
The illustrations shown may differ from the actual physical appearances.
PC Card Slots
Caps Lock
Numeric key (NumLk)
Scroll lock (ScrLk)
CD drive status
Floppy disk drive status
Hard disk drive status
Power status
Function Keys LCD
Floppy Disk Drive
Power Switch
Microphone Jack
Headphone Jack
CD Drive
Security Lock
A Kensington cable can be connected
to prevent theft of your computer. For
more information, please read the
manual that comes with the cable.
LOCK
DC-IN Jack
Keyboard
There is a small bar on F, J, and
to enable you to locate the key’s
position by touch.
6

External Keyboard/Mouse Port
USB Ports
These holes allow heat to exit.
CAUTION
Do not block or place the computer in a lo-
cation that may prevent proper ventilation.
This cover is not to be opened by anyone
except authorized service personnel.
CAUTION
RAM Module Slot
Expansion Bus Connector
Battery Pack
Hard Disk Drive
LAN
Names and Functions of Parts
IEEE 1394 Interface Connector
Modem
External Display Port
1394
Serial Port
Parallel Port
Ventilation Hole
7

Operation
1Open the display
Slide the latch as shown and lift open the display.
3 Starting Up/Shutting Down
Starting Up
2Turn your computer on
Press the power switch and hold it for approximately one second until the power indicator
turns on before releasing it.
After confirming that the power indicator has turned on, avoid the following until
Windows has completed loading.
• Connecting or disconnecting the AC adaptor.
• Touching the power switch.
• Performing any keyboard or touch pad (or external mouse) operations.
• Closing the display.
Once the computer is powered off, you must wait at least ten seconds before pow-
ering it on again.
When the CPU temperature rises, the computer may not power on to prevent the
CPU from overheating. Should this happen, allow the computer to cool down then
switch the power on again.
If the computer still does not power on, contact Panasonic Technical Support.
When an application or file that was previously displayed ap-
pears on your screen,
the standby or hibernation mode ( “Standby/Hibernation Functions”) has
been set.
CAUTION
Enter your password* and press Enter .(
“Security Measures”)
Will Start
Will Not Start
(Power off)
If [Enter Password] is displayed,
* Supervisor Password or User Password set in the Setup Utility (not
the Windows password).
Three incorrect attempts
or
No password for about a minute
The correct password
Enter Password [ ]
You may encounter the following situations when the computer is turned on at very
low temperatures. These functions are designed to prevent hard disk drive malfunc-
tions that may occur at low temperatures.
The message “Warming up the system” is displayed, and start-up takes longer than
usual (a few minutes or more).
In this case, wait for the computer to start up.
The power indicator will blink quickly (in green); in this case, the power does not
turn on, or the computer does not resume from standby or hibernation mode.
To restart the computer, leave it in an environment with a temperature of 5°C (41°F)
or more for about an hour, and try turning the power on once more.
Power
Switch
Power Indicator
NOTE
8

Operation
3Log on to Windows
Windows 2000
Wait for 10 seconds after confirming that the hard disk drive access has been completed,
input the user name and password, then select [OK]. Until the correct user name and
password are entered, the computer will not operate.
Windows XP
Wait for 10 seconds after confirming that the hard disk access has been completed, select
the user and input the password, then select . Until the correct password is entered, the
computer will not operate.
4Select your application
You are able to start working on your computer.
The power saving function is factory set, so if there is no input from a key, the touch pad
or an external mouse (when one is connected) for a certain interval of time, the power to
the LCD and hard disk may be turned off. The LCD will resume operation when the
touch pad or an external mouse (when one is connected) is used or a key is pressed.
The power to the LCD may be turned off even when an application software is being
installed. In this case, because it is conceivable that a selection dialog box will be
shown, do not press Space or Enter to attempt to resume from this condition as
doing so may trigger a selection, but instead, press a key unrelated to the direct trigger-
ing of a selection, like Ctrl .
In addition, when the computer is left alone, it automatically enters the standby or hiber-
nation mode ( “Standby/Hibernation Functions”). The computer will resume
by pressing the power switch.
Windows XP
When you create the first new account, you can only select [Computer administrator].
Only the added user account will be displayed in the Welcome screen. The account for
the administrator created during Windows setup (when the computer is started up for
the first time) will not be displayed.
When switching to a different user with the Fast User Switching function, it may not be
possible to set the settings of the display. In this case, log on with the administrator
authority again, not using the Fast User Switching function, and try the operation once
more.
NOTE
9

Shutting Down (power off your computer)
From the keyboard,
You may choose to press , and then select the menu with or .
Restarting your computer(without shutting down)
Windows 2000
Select [Restart], then select [OK].
Windows XP
Select [Restart].
3Confirm shut down
Windows 2000
Select [Shut down], then select [OK].
Windows XP
Select [Turn Off].
Your computer will power off automatically.
To quickly resume computer operation after shutting down,
The standby or hibernation function is available. ( “Standby/Hiberna-
tion Functions”)
NOTE
NOTE
Starting Up/Shutting Down
This procedure is for shutting down the computer without using the standby or hibernation
function.
(
“Standby/Hibernation Functions” )
1Save important data and close each application
2Display the shut down screen
Windows 2000
Select [Start] - [Shut Down].
Windows XP
Select [start] - [Turn Off Computer].
CAUTION
Do not do the following during the shutdown/restart procedure.
• Connecting or disconnecting the AC adaptor.
• Touching the power switch.
• Performing any keyboard, touch pad (or external mouse) operations.
• Closing the display.
10

System Configuration Diagram
Included
L2-Cache
512k
Mobile Northwood
(μFCPGA)
intel R
Internal Core Frequency
1.7 / 1.9GHz
Internal Voltage 1.3V&1.25V
LCD
(14.1” XGA , 15.0” UXGA)
Processor
System Bus
1.5V
ICH3-M (1.8V)
USB x6
Interface
PCI
Bridge
IDE
Interface
Primary IDE
USB 0, 1
CD,DVD,
CD-R/RW
COMBO
A
C-link
Interface
TYPEⅡ(SLOT A)
Card Bus (3.3V)
RICOH
･R5C478Ⅱ
(･R5C576A)
TYPEⅡ(SLOT B)
LAN(3.3V)
RealTek
RJ-45
Speaker
Headphone
Microphone
(EXT)
Sound (3.3V)
ST9757
Sigmatel
AC
97
Super I/O
PC87391
NS
BIOS ROM
SST
(512KB)
FDD
LPC Bus 3.3V
EC
Mitsubishi
LPC
Bridge
HDD
20GB /40GB
2.5inch
66MHz
32bi
t
A
GP
4
×
V
GA (1.8V)
A
TI
Mobility M7D
133MHz
64bi
t
2.5V
A
GTL+
64bit 400MHz
A
GP
Interface Host
Hub
Bridge
DRAM
Interface
MCH-M (1.2V)
Main Memory (DDR-SDRAM )
On Board 128 / 256MB
VRAM
On Board 16 / 32MB
CRT
Extended Memory(DDR-SDRAM )
SO-DIMM ｘ1 (MAX 512MB)
1394
Hub Interface
1.8V 66MHz IEEE1394
TI
TSB43AB21A
Mini-PCI
Wireless LAN
Mini-PCI
Secondary IDE
PCI Bus 32bit 33MHz 3.3V
Mini-PCI
Mini-PCI
Modem
RJ-11
Int KB
Flat Pad
PS/2 Port
Port Replicater Conn
PS/2 KB
USB1
LAN
CRT
Serial
Parallel PS/2 MS
HeadphoneMicrophone
USB2
Serial
Parallel
Smart Card
4 Block Diagram
11

Li-Ion BATTERY 11.1V 6300mAh
V
A3
A
C ADAPTOR 15.6V
BATTERY CHARGER
V
CPUCORE
V
B3
V
C3
DC/DC CONVERTER OUTPUT 5V
V
OLTAGE
DETECTOR
A
CDTCT
DC/DC CONVERTER OUTPUT 1.0V ~1.3V
DC/DC CONVERTER OUTPUT 3.3V
IC45
OVP
V
OLTAGE
DETECTOR
V
C5
V
OLTAGE
DETECTOR
V
OLTAGE
DETECTOR
SUSB#
VC3
SUSB#
SUSC#
OVP
DCIN&BATT
A
CDTCT
V
B5
A
CIN
OVP
OVP
V
A18
IC44
IC44
I
C
70
SUSC#
I
C
47
I
C
71
V
B25
OVP
V
B18
V
C18
SUSC#
SUSB#
VC
25
SUSB#
DC/DC CONVERTER OUTPUT 2.5V
SUS
C
#DC/DC
CONVERTER OUTPUT1.25V
V
B125
VC
125
SUSB#
IC71
V
B15
V
C15
SUSB#
DC/DC CONVERTER OUTPUT 1.5V
SUS
C
#
V
OLTAGE
REGULATOR OUTPUT 1.8V
IC43
Power Supply Configuration Diagram
12

6 I/O Address Map
0x0000-0x0CF7 PCI bus
0x0000-0x0CF7 Direct memory access controller
0x0D00-0xFFFF PCI bus
0x3000-0x3FFF Intel(R) 845 Chipset Processor to AGP Controller - 1A31
0x3000-0x3FFF RAGE MOBILITY M7
0x03B0-0x03BB Intel(R) 845 Chipset Processor to AGP Controller - 1A31
0x03B0-0x03BB RAGE MOBILITY M7
0x03C0-0x03DF Intel(R) 845 Chipset Processor to AGP Controller - 1A31
0x03C0-0x03DF RAGE MOBILITY M7
0x1800-0x181F Intel(R) 82801CA/CAM USB Universal Host Controller - 2482
0xFD00-0xFDFF Ricoh R/RL/RB/5C478(II), R5C522 or Compatible CardBus Controller
0xFC00-0xFCFF Ricoh R/RL/RB/5C478(II), R5C522 or Compatible CardBus Controller
0xFA00-0xFAFF Ricoh R/RL/RB/5C478(II), R5C522 or Compatible CardBus Controller
0xF900-0xF9FF Ricoh R/RL/RB/5C478(II), R5C522 or Compatible CardBus Controller
0xDFF0-0xDFFF PCMCIA IDE/ATAPI Controller
0x5000-0x50FF Realtek RTL8139 Family PCI Fast Ethernet NIC
0x0A79-0x0A79 ISAPNP Read Data Port
0x0279-0x0279 ISAPNP Read Data Port
0x0274-0x0277 ISAPNP Read Data Port
0x0081-0x008F Direct memory access controller
0x00C0-0x00DF Direct memory access controller
0x0020-0x0021 Programmable interrupt controller
0x00A0-0x00A1 Programmable interrupt controller
0x0040-0x0043 System timer
0x0061-0x0061 System speaker
0x0070-0x0071 System CMOS/real time clock
0x00F0-0x00FF Numeric data processor
0x0062-0x0062 Microsoft ACPI-Compliant Embedded Controller
0x0066-0x0066 Microsoft ACPI-Compliant Embedded Controller
0x0060-0x0060 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
0x0064-0x0064 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
0x03F8-0x03FF Communications Port (COM1)
0x0378-0x037F ECP Printer Port (LPT1)
0x0778-0x077F ECP Printer Port (LPT1)
0x03F0-0x03F5 Standard floppy disk controller
0x03F7-0x03F7 Standard floppy disk controller
0x1820-0x182F Intel(R) 82801CAM Ultra ATA Storage Controller - 248A
0x01F0-0x01F7 Primary IDE Channel
0x03F6-0x03F6 Primary IDE Channel
0x0170-0x0177 Secondary IDE Channel
0x0376-0x0376 Secondary IDE Channel
0x1840-0x185F Intel(R) 82801CA/CAM SMBus Controller - 2483
0x1C00-0x1CFF Intel(r) AC'97 Audio Controller - SigmaTel Codec
0x1880-0x18BF Intel(r) AC'97 Audio Controller - SigmaTel Codec
0x2400-0x24FF Lucent Technologies Soft Modem AMR
0x2000-0x207F Lucent Technologies Soft Modem AMR
14

8 Power-On Self Test (Boot Check)
Outline of POST
The set has a boot check function called POST (Power-On Self Test) in it. The condition of the main body is diagnosed by checking
beep sound or error code.
zStart .............Test begins automatically when power switch is set to ON.
zNormal finish .....After memory checking, a beep sound is issued once and the set is placed into automatic stop.
Note: If no error occurs, nothing is displayed. (No display of OK, etc.)
Error Diagnosis by Checking Beep Signal Sound
The beep sound is as follows:
= long sound (about 0.4 sec.), = short sound (about 0.2 sec.), Length between sounds is about 0.1 sec.
zTable of errors classified by beep sounds
(1 (long sound) -2-3-4)
(Length of bar shows length of sound.)
Diagnosis Beep signal sound Error message
1(long sound)-2 BIOS ROM error
BIOS ROM error
RAM error
Keyboard controller error
RAM error
RAM error
RAM error
1-2-2-3
1-3-1-1
1-3-1-3
1-3-4-1
1-3-4-3
1-4-1-1
BIOS ROM error2-1-2-3
Occurrence of unexpected offering2-2-3-1
Main board
(Note) A beep sound is also issued in case of other I/O trouble.
16

9 List of Error Codes <Only when the port replicator is connected>
The following is a list of the messages that BIOS can display. Most of them occur during
POST. Some of them display information about a hardware device, e.g., the amount of memory
installed. Others may indicate a problem with a device, such as the way it has been configured.
Following the list are explanations of the messages and remedies for reported problems.
If your system displays one of except the messages marked below with an asterisk (*), write
down the message and contact Panasonic Technical Support. If your system fails after you
make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults
or correct the error.
0200 Failure Fixed Disk
Fixed disk in not working or not configured properly. Check to see if fixed disk is attached
properly. Run Setup. Find out if the fixed-disk type is correctly identified.
0210 Stuck key
Stuck key on keyboard.
0211 Keyboard error
Keyboard not working.
0212 Keyboard Controller Failed
Keyboard controller failed test. May require replacing keyboard controller.
0213 Keyboard locked - Unlock key switch
Unlock the system to proceed.
0230 System RAM Failed at offset : nnnn
System RAM failed at offset nnnn of in the 64k block at which the error was detected.
0231 Shadow RAM Failed at offset : nnnn
Shadow RAM failed at offset nnnn of the 64k block at which the error was detected.
0232 Extended RAM Failed at offset : nnnn
Extended memory not working or not configured properly at offset nnnn.
0250 System battery is dead - Replace and run SETUP
The CMOS clock battery indicator shows the battery is dead. Replace the battery and run Setup
to reconfigure the system.
*0251 System CMOS checksum bad - Default configuration used
System CMOS has been corrupted or modified incorrectly, perhaps by an application program
that changes data stored in CMOS. The BIOS installed Default SETUP Values. If you do not
want these values, enter Setup and enter your own values. If the error persists, check the system
battery or contact Panasonic Technical Support.
0260 System timer error
The timer test failed. Requires repair of system board.
0270 Real time clock error
Real-time clock fails BIOS test. May require board repair.
*0280 Previous boot incomplete - Default configuration used
Previous POST did not complete successfully. POST loads default values and offers to run
Setup. If the failure was caused by incorrect values and they are not corrected, the next boot
will likely fail. On systems with control of wait states, improper Setup settings can also termi-
nate POST and cause this error on the next boot. Run Setup and verify that the wait-state
configuration is correct. This error is cleared the next time the system is booted.
0281 Memory Size found by POST differed from EISA CMOS
Memory size found by POST differed from EISA CMOS.
17