Toshiba portege r100 Service Manual
1
Toshiba Personal Computer
PORTEGE R100
Maintenance Manual
TOSHIBA CORPORATION
File Number 960-440
Copyright
© 2002 by Toshiba Corporation. All rights reserved. Under the copyright laws, this manual cannot be
reproduced in any form without the prior written permission of Toshiba. No patent liability is assumed with
respect to the use of the information contained herein.
Toshiba PORTEGE R100 Maintenance Manual
First edition March 2003
Disclaimer
The information presented in this manual has been reviewed and validated for accuracy. The included set of
instructions and descriptions are accurate for the PORTEGE R100series at the time of this manual's production.
However, succeeding computers and manuals are subject to change without notice. Therefore, Toshiba assumes
no liability for damages incurred directly or indirectly from errors, omissions, or discrepancies between any
succeeding product and this manual.
Trademarks
IBM is a registered trademark, and IBM PC/AT, PS/2, OS/2 and VGA are registered trademarks of IBM
Corporation.
Microsoft and MS-DOS and Windows are registered trademarks of Microsoft Corporation.
Intel and Pentium are registered trademarks, and MMX is a trademark of Intel Corporation.
Sound Blaster and Pro are registered trademarks of Creative Technology Ltd.
Super I/O and MICROWIRE are registered trademarks of National Semiconductor Corporation.
All other properties are trademarks or registered trademarks of their respective holders.
ii PORTEGE R100 Maintenance Manual (960-440)
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer PORTEGE R100, referred to as PORTEGE R100 in this manual.
The procedures described in this manual are intended to help service technicians isolate
faulty Field Replaceable Units (FRUs) and replace them in the field.
SAFETY PRECAUTIONS
Four types of messages are used in this manual to bring important information to your
attention. Each of these messages will be italicized and identified as shown below.
DANGER: “Danger” indicates the existence of a hazard that could result in death or
serious bodily injury, if the safety instruction is not observed.
WARNING: “Warning” indicates the existence of a hazard that could result in bodily
injury, if the safety instruction is not observed.
CAUTION: “Caution” indicates the existence of a hazard that could result in property
damage, if the safety instruction is not observed.
NOTE: “Note” contains general information that relates to your safe maintenance
service.
Improper repair of the computer may result in safety hazards. Toshiba requires service
technicians and authorized dealers or service providers to ensure the following safety
precautions are adhered to strictly.
Be sure to fasten screws securely with the right screwdriver. Be sure to use the PH
Point size “0” and “1” screwdrivers complying with the ISO/DIS 8764-1:1996. If a
screw is not fully fastened, it could come loose, creating a danger of a short circuit,
which could cause overheating, smoke or fire.
If you replace the battery pack or RTC battery, be sure to use only the same model
battery or an equivalent battery recommended by Toshiba. Installation of the wrong
battery can cause the battery to explode.
PORTEGE R100 Maintenance Manual (960-440) iii
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the PORTEGE R100 system unit and
each FRU.
Chapter 2 Troubleshooting Procedures explains how to diagnose and resolve
FRU problems.
Chapter 3 Test and Diagnostics describes how to perform test and diagnostic
operations for maintenance service.
Chapter 4 Replacement Procedures describes the removal and replacement of the
FRUs.
Appendices The appendices describe the following:
❑ Handling the LCD module
❑ Board layout
❑ Pin assignment
❑ Keyboard scan/character codes
❑ Key layout
❑ Wiring diagrams
❑ BIOS/KBC/EC Update
❑ Reliability
❑ Key FD
iv PORTEGE R100 Maintenance Manual (960-440)
Conventions
This manual uses the following formats to describe, identify, and highlight terms and
operating procedures.
Acronyms
On the first appearance and whenever necessary for clarification acronyms are enclosed in
parentheses following their definition. For example:
Read Only Memory (ROM)
Keys
Keys are used in the text to describe many operations. The key top symbol as it appears on
the keyboard is printed in boldface type.
Key operation
Some operations require you to simultaneously use two or more keys. We identify such
operations by the key top symbols separated by a plus (+) sign. For example, Ctrl + Pause
(Break) means you must hold down Ctrl and at the same time press Pause (Break). If
three keys are used, hold down the first two and at the same time press the third.
User input
Text that you are instructed to type in is shown in the boldface type below:
DISKCOPY A: B:
The display
Text generated by the PORTEGE R100 that appears on its display is presented in the type
face below:
Format complete
System transferred
PORTEGE R100 Maintenance Manual (960-440) v
Table of Contents
Chapter 1 Hardware Overview
1.1 Features ...................................................................................................................... 1-1
1.2 1.8-inch Hard Disk Drive........................................................................................... 1-9
1.3 Keyboard.................................................................................................................. 1-11
1.4 TFT Color Display................................................................................................... 1-12
1.5 Power Supply ........................................................................................................... 1-14
1.6 Batteries ................................................................................................................... 1-15
1.7 AC Adapter .............................................................................................................. 1-18
Chapter 2 Troubleshooting Procedures
2.1 Troubleshooting ......................................................................................................... 2-1
2.2 Troubleshooting Flowchart........................................................................................ 2-2
2.3 Power Supply Troubleshooting.................................................................................. 2-6
2.4 System Board Troubleshooting................................................................................ 2-16
2.5 USB 3.5” FDD Troubleshooting.............................................................................. 2-28
2.6 1.8” HDD Troubleshooting...................................................................................... 2-31
2.7 Keyboard Troubleshooting ......................................................................................2-36
2.8 Display Troubleshooting.......................................................................................... 2-37
2.9 Touch Pad ................................................................................................................2-39
2.10 Modem ..................................................................................................................... 2-40
2.11 LAN ......................................................................................................................... 2-42
2.12 Sound ....................................................................................................................... 2-44
2.13 SD card slot.............................................................................................................. 2-46
2.14 Wireless LAN Troubleshooting............................................................................... 2-47
vi PORTEGE R100 Maintenance Manual (960-440)
Chapter 3 Tests and Diagnostics
3.1 The Diagnostic Test ................................................................................................... 3-1
3.2 Executing the Diagnostic Test ................................................................................... 3-3
3.3 Subtest ....................................................................................................................... 3-7
3.4 System Test................................................................................................................3-9
3.5 Memory Test............................................................................................................ 3-12
3.6 Keyboard Test.......................................................................................................... 3-14
3.7 Display Test ............................................................................................................. 3-17
3.8 USB Floppy Disk Test ............................................................................................. 3-20
3.9 Hard Disk Test ......................................................................................................... 3-22
3.10 Real Timer Test........................................................................................................ 3-25
3.11 NDP Test.................................................................................................................. 3-27
3.12 Expansion Test......................................................................................................... 3-28
3.13 Wireless LAN Test Program.................................................................................... 3-30
3.14 Wireless LAN Test (Atheros) ................................................................................. 3-35
3.15 3.15 Wireless LAN Test (Calexico)......................................................................... 3-38
3.16 Sound/LAN/Modem Test......................................................................................... 3-39
3.17 Error Status Code..................................................................................................... 3-39
3.18 HDC Status .............................................................................................................. 3-44
3.19 FDD Cleaning .......................................................................................................... 3-46
3.20 Log Utilities ............................................................................................................. 3-47
3.21 Running Test............................................................................................................ 3-49
3.22 Floppy Disk Drive Utilities...................................................................................... 3-51
3.23 System Configuration .............................................................................................. 3-57
3.24 SETUP .....................................................................................................................3-59
Chapter 4 Replacement Procedures
4.1 Overview....................................................................................................................4-1
4.2 Battery pack/PC card .................................................................................................4-8
4.3 PC card/SD memory card ........................................................................................4-10
4.4 Memory Module ...................................................................................................... 4-12
PORTEGE R100 Maintenance Manual (960-440) vii
4.5 HDD......................................................................................................................... 4-14
4.6 Keyboard/Bottom cover........................................................................................... 4-17
4.7 Touch pad................................................................................................................. 4-22
4.8 MDC board/HDD cable ........................................................................................... 4-23
4.9 Speaker/RTC battery................................................................................................ 4-25
4.10 Wireless LAN board ................................................................................................ 4-28
4.11 PC card slot.............................................................................................................. 4-31
4.12 LAN/MODEM jack ................................................................................................. 4-32
4.13 Sound board ............................................................................................................. 4-33
4.14 System board/FAN .................................................................................................. 4-34
4.15 LED SW membrane................................................................................................. 4-38
4.16 LCD mask/FL inverter/LCD.................................................................................... 4-39
4.17 LCD cable/Wireless LAN cable/Antenna cover...................................................... 4-43
4.18 Hinge........................................................................................................................ 4-48
4.19 Fluorescent Lamp..................................................................................................... 4-50
Appendices
Appendix A Handling the LCD Module ........................................................................ A-1
Appendix B Board Layout ............................................................................................. B-1
Appendix C Pin Assignment .......................................................................................... C-1
Appendix D Keyboard Scan/Character Codes ............................................................... D-1
Appendix E Key Layout..................................................................................................E-1
Appendix F BIOS/KBC/EC Update ...............................................................................F-1
Appendix G Reliability................................................................................................... G-1
Appendix H Key FD....................................................................................................... H-1
viii PORTEGE R100 Maintenance Manual (960-440)
Chapter 1
Hardware Overview
1 Hardware Overview
1 Hardware Overview
1-ii PORTEGE R100 Maintenance Manual (960-440)
1 Hardware Overview
Chapter 1 Contents
1.1 Features...................................................................................................................... 1-1
1.2 1.8-inch Hard Disk Drive........................................................................................... 1-9
1.3 Keyboard.................................................................................................................. 1-11
1.4 TFT Color Display................................................................................................... 1-12
1.4.1 LCD Module ...................................................................................... 1-12
1.4.2 FL Inverter Board............................................................................... 1-13
1.5 Power Supply........................................................................................................... 1-14
1.6 Batteries ................................................................................................................... 1-15
1.6.1 Main Battery....................................................................................... 1-15
1.6.2 Battery Charging Control ................................................................... 1-17
1.6.3 RTC battery ........................................................................................ 1-17
1.7 AC Adapter .............................................................................................................. 1-18
PORTEGE R100 Maintenance Manual (960-440) 1-iii
1 Hardware Overview
Figures
Figure 1-1 Front of the computer..................................................................................... 1-4
Figure 1-2 System units configuration ............................................................................ 1-4
Figure 1-3 System Block Diagram .................................................................................. 1-5
Figure 1-4 1.8-inch HDD................................................................................................. 1-9
Tables
Table 1-1 1.8-inch HDD dimensions ............................................................................. 1-9
Table 1-2 1.8-inch HDD Specifications....................................................................... 1-10
Table 1-3 LCD module specifications.......................................................................... 1-12
Table 1-4 FL inverter board specifications .................................................................. 1-13
Table 1-5 Power supply output specifications ............................................................. 1-14
Table 1-6 Battery specifications................................................................................... 1-16
Table 1-7 Time required for charges of main battery .................................................. 1-17
Table 1-8 RTC battery charging/data preservation time.............................................. 1-17
Table 1-9 AC adapter specifications ............................................................................ 1-18
1-iv PORTEGE R100 Maintenance Manual (960-440)
1.1 Features 1 Hardware Overview
1 Features
1.1 Features
The PORTEGE R100 is an ultra thin and lightweight PC realizing cable-less environment on
a table by wireless function with an Intel Pentium® M processor realizing high performance.
❑ Microprocessor
Pentium® M
A 900/600MHz Pentium® M processor with a 400MHz external clock, 100MHz
bus and 1.2/1.05V core operation.
❑ Cache memory
A Pentium® M has 32KB primary cache and 1MB secondary cache (in CPU)
❑ Memory
One expansion memory module can be installed to provide a maximum of 1024MB.
128MB, 256MB and 512MB are provided for Memory.
❑ VRAM
32MB VRAM in Trident XP4m.
❑ HDD
40GB/30GB/20GB internal drive of 1.8-inch, 8.0mm height or 20GB internal drive of
1.8-inch, 5.0mm height.
❑ USB FDD
Three-mode 3.5 inch USB FDD supporting 720KB, 1.2MB and 1.44MB formats is
prepared as option.
❑ Display
LCD
Built-in 12.1 inch, 262,144 colors, XGA (1024×768 dots), thin type low temperature
poly- silicon TFT color display. Video controller is included in North Bridge chip.
CRT
Supported via an RGB connector
PORTEGE R100 Maintenance Manual (960-440) 1-1
1 Hardware Overview 1.1 Features
❑ Keyboard
Keyboards has 84(US)/85(UK)-key and supports Windows key.
❑ Touch pad
Touch pad is installed as a pointing device.
❑ Battery
The RTC battery is mounted inside computer.
The main battery is a detachable lithium polymer main battery (10.8V-1,950mAh)
and the RTC battery is a lithium ion battery(2.4V-15mAH).
❑ USB (Universal Serial Bus)
Six USB ports supporting USB 2.0. Two of these are occupied and others are usable.
❑ PC card slot
A PC card Type I or II is acceptable. Supports ToPIC-100 (3.3V/CardBus).
❑ SD card slot
One SD card slot.
❑ Sound system
Incorporates an internal monaural speaker, external monaural microphone connector
and stereo headphone connector.
❑ One touch button
Internet button and Mail button are installed.
❑ Built-in Modem
The computer contains a MDC, enabling data and fax communication. It supports
ITU-TV.90. The transfer rates are 56 Kbps for data reception, 33.6 Kbps for data
transmission, and 14,400 bps for fax transmission. However, the actual speed
depends on the line quality. The RJ11 modem jack is used to accommodate a
telephone line.
❑ LAN
The internal LAN supports 10/100Mbit Ethernet.
1-2 PORTEGE R100 Maintenance Manual (960-440)
1.1 Features 1 Hardware Overview
❑ Wireless LAN
The internal wireless LAN supports Mini PCI Type III(802.11ab) made by Agere.
PORTEGE R100 Maintenance Manual (960-440) 1-3
1 Hardware Overview 1.1 Features
Figure 1-1 shows the front of the computer and Figure 1-2 shows the system units
configuration.
Figure 1-1 Front of the computer
Headphone
Fan
RTC battery
Battery
DC-IN
LCD
FL inverter
CRT
LED
Memory
External microphone
PJ998
PJ997
PJ999
FGOSC*
board
PJ8770
PJ8760
PJ8810
PJ8800
PJ5600
PJ5601
PJ5620
PJ7
PJ1002
PJ11
FGOFL*
board
PJ501
PJ500
PJ9
System
board
PJ445 PJ334
Wireless LAN card
PJ351
FGOMI*
board
PJ17
PJ1
PJ100
PadKeyboardPC card
FGOWS*
board
PJ1
PJ1
PJ6002
PJ4
PJ5
PJ4100
PJ2210
PJ325
PJ3
PJ1
FGOHD
(When there is no
wireless LAN, the
FGOWS card is
used instead of the
FGOMI card.)
Docking I/F
Speaker
USB1
USB2
Network
SD card
Debug port
PJ3
PJ2 HDD
board
MDC
Figure 1-2 System units configuration
1-4 PORTEGE R100 Maintenance Manual (960-440)
1.1 Features 1 Hardware Overview
Figure 1-3 shows the system block diagram.
Figure 1-3 System Block Diagram
PORTEGE R100 Maintenance Manual (960-440) 1-5
1 Hardware Overview 1.1 Features
The PC contains the following components.
❑ CPU
Pentium® M
• A 900/600MHz Centrino processor with a 400MHz external clock, 100MHz
bus and 1.2V/1.05 core operation voltage (built-in NDP).
• Internal cache memory: 32KB Data and 32KB Instruction, Write-Back
• Secondary cache memory: 1MB (in CPU)
❑ Memory
One memory slot capable of accepting 256MB-memory module for a maximum of
512MB.
• 2.5V operation
• 140-pin exclusive memory board
• Access time : 6ns
• Memory Supporting PC-2100(Operation is PC100)
❑ BIOS ROM (Flash memory)
• 4Mbit (256K×16-bit chip)
− 64KB used for logo
− 64KB used for setup and checksum
− 128KB used for system BIOS
− 64KB used for VGA-BIOS
− 64KB used for ACPI
− 8KB used for PnP
− 8KB used for password security
− 16KB used for booting
− 64KB used for LAN
− 32KB are reserved
• 5.0V operation
• Access time : 120 ns or 90 ns
• Data transfer: 8-bit
1-6 PORTEGE R100 Maintenance Manual (960-440)
1.1 Features 1 Hardware Overview
❑ PCI chipset
This gate array incorporates the following elements and functions
• North Bridge (Intel-made Odem MCH-M)
− Pentium® M processor and Mobile Northwood processor supported
− Maximum capacity of DDR200 or DDR266 is 1GBmax
− DRAM control
− Complies with AGP V2.0 x 4 modes
− Complies with PCI R2.2
− Complies with APCI 1.0b
− Geyserville III supported
− Intel SpeedStep Technology supported
− 593-ball 37.5x37.5mm Micro-FCBGA package
• South Bridge (Intel-made ICH4-M)
− PCI 3.3V/5V tolerance interface
− Provides Steerable PCI interrupts for PCI device Plug-and-Play
− Enhanced DMA controller
− Interrupt controller
− Counter/timers
− Distributed DMA supported
− PC/PCI DMA supported
− Serial IRQ supported
− Low Pin Count (LPC) host controller
− Plug-and-Play supported
− ACPI supporting features
− Built-in PCI IDE controller
− USB interface (6 x USB2.0 ports)
− SMBus interface
− Super I/O interface
− Audio system
− SW modem interface
− 421-ball (31mm x 31mm) BGA package
❑ VGA controller
Included in North Bridge
❑ PC card controller (Amkor-made YEBISU_SS)
• PCI interface (PCI Rev.2.2)
• Chipset interface
• CardBus/PC Card controller (Yenta2 Ver.2.2) 1 slots
• SD card controller (SDHC Ver.1.2)
PORTEGE R100 Maintenance Manual (960-440) 1-7
1 Hardware Overview 1.1 Features
• SDIO card controller (Ver.1.1)
• SmartMedia controller (SMHC Ver 01/SMIL1.0)
• SmartCard I/F
• SIO (UART) controller (MS Debug Port Specification Ver.1.0)
• Docking station interface
• External device interface
• 1.0mm pitch 256pin/17mm PBGA package
❑ Other main system chips
• EC/KBC (Mitsubishi-made LPC microcontroller M306K5F8LRP x 1)
• PSC (TMP87PM48U x 1)
• Temperature sensor (ADM1032 x 1)
2
PROM (BR93LC46F-Q (used for LAN MAC address))
• E
❑ Modem controller
Supported by MDC. Using of the secondary AC97 Line
❑ LAN controller (Kinnereth-made Intel:82550PM)
Controls LAN and supports 10/100Base-T.
1-8 PORTEGE R100 Maintenance Manual (960-440)
1.2 1.8-inch Hard Disk Drive 1 Hardware Overview
1.2 1.8-inch Hard Disk Drive
A compact, high-capacity HDD with a height of 5.0/8.0mm. Contains a 1.8-inch magnetic
disk and magnetic heads.
Figure 1-4 shows a view of the 1.8-inch HDD and Tables 1-1 and 1-2 list the specifications.
Figure 1-4 1.8-inch HDD
Table 1-1 1.8-inch HDD dimensions
Standard value
Parameter
Outline Width (mm) 54.0 54.0 54.0 0.2 54.0 0.2
dimensions Height (mm) 5.0 0.15 8.0 8.0 0.15 8.0 0.15
Depth (mm) 78.5 0.3 78.5 78.5 0.3 78.5 0.3
Weight (g) 51max 62max 62max 62max
TOSHIBA
HDD1422
TOSHIBA
MK2003GAH
TOSHIBA
HDD1384
TOSHIBA
HDD1524
PORTEGE R100 Maintenance Manual (960-440) 1-9
1 Hardware Overview 1.2 1.8-inch Hard Disk Drive
Table 1-2 1.8-inch HDD Specifications
Specification
Parameter
Storage size
(formatted)
Speed (RPM) 4,200 0.1 4,200 4,200 4,200 0.1
Data transfer speed
(Mbits/s)
Interface transfer
rate (MB/s)
Track density
Track/mm(TPI)
Bit/mm
Access time (msec)
Track to track
Average time
Max seek
Start time (sec) 3.5 typical
TOSHIBA
HDD1422
20GB 20GB 30GB 40GB
125.5 to 253.1 115.6 to 204.4 114.8 to 222.7 125.5 to 253.1
100 100 100 100
3465
27.4K
3
15
26
20 max
TOSHIBA
MK2003GAH
2237 (56.8K) max.
24.4K(621K) max.
3
15
26
3.5 typical
20 max
TOSHIBA
HDD1384
3039
24.1K
3
15
26
3.5 typical
20 max
TOSHIBA
HDD1524
3465
27.4K
3
15
26
3.5 typical
20 max
1-10 PORTEGE R100 Maintenance Manual (960-440)
1.3 Keyboard 1 Hardware Overview
1.3 Keyboard
The keyboard is mounted 84(US)/85(UK) keys that consist of character key and control key,
and in conformity with JIS. The keyboard is connected to membrane connector on the system
board and controlled by the keyboard controller. See Appendix E about a layout of the
keyboard.
PORTEGE R100 Maintenance Manual (960-440) 1-11
1 Hardware Overview 1.4 TFT Color Display
1.4 TFT Color Display
The TFT color display consists of a LCD module and FL inverter board.
1.4.1 LCD Module
The LCD module used for the TFT color display uses a backlight as the light source and can
display images and characters of 262,144 colors with 1024×768 resolution. The video
controller is incorporated into the North Bridge (M1644M) chip and can control both internal
and external XGA-support displays simultaneously.
Table 1-5 shows list the specifications.
Table 1-3 LCD module specifications (12.1 TFT)
Specifications Item
G33C0000U
Number of Dots
Dot spacing (mm) 0.24(H) x 0.24(V)
Display range (mm) 245.76(H) x 184.32(V)
Outline
dimensions
264.4(w) x 197.5(H) x 5.35Max(D)
1024×768
1-12 PORTEGE R100 Maintenance Manual (960-440)
1.4 TFT Color Display 1 Hardware Overview
1.4.2 FL Inverter Board
The FL inverter board supplies a high frequency current to illuminate the LCD module FL.
Table 1-4 lists the FL inverter board specifications.
Table 1-4 FL inverter board specifications
Specifications Item
UA2040P02
Input Voltage (V) DC 5
Output
Voltage (V) 750
Current MAX (mA) 4.22
Current MIN (mA) 0.412
PORTEGE R100 Maintenance Manual (960-440) 1-13
1 Hardware Overview 1.5 Power Supply
1.5 Power Supply
The power supply supplies eight different voltages to the system board.
The power supply microcontroller has the following functions.
1. Judges that the DC power supply (AC adapter) is connected to the computer.
2. Detects DC output and circuit malfunctions.
3. Controls the battery icon, and DC IN icon.
4. Turns the battery charging system on and off and detects a fully charged battery.
5. Turns the power supply on and off.
6. Provides more accurate detection of a low battery.
7. Calculates the remaining battery capacity.
8. Controls the transmission of the status signal of the main battery.
Table 1-5 lists the power supply output specifications.
Table 1-5 Power supply output specifications
Device Name
CPU PPV 1.000 -
MCH-M MCH1R2-P1V 1.2
CPU,MCH-M,ICH4-M PTV 1.075
GPU 2R5-P2V 2.5
MCH-M,SDRAM 2R5-B2V 2.5
SDRAM 1R25-B1V
(1R25M-B1V)
GPU PGV 1.2-1.5
ICH4-M,KINNERETH LAN-E3V 3.3
DC Voltage
(V)
0.748
1.25
ICH4-M,EC/KBC S3V 3.3
YEBISUSS,PC Card,MDC B3V 3.3
Clock Generator,ADM1032,ICH4-M,FWH,Mini PCI,
GPU,LCD,AD1981B,HDD
1-14 PORTEGE R100 Maintenance Manual (960-440)
P3V 3.3
1.5 Power Supply 1 Hardware Overview
Device Name
SD SD-B3V
USB E5V
PC Card B5V
KB,LED,FL INVERTER P5V
DOCK D-E3V
DOCK D-E5V
AD1981B A4R7-P4V
Headphone,Ext-Mic A-P3V 3.3
CPU,MCH-M,ICH4-M 1R8-P1V 1.8
MCH-M,ICH4-M,GPU 1R5-P1V 1.5
ICH4-M 1R5-S1V 1.5
ICH4-M LAN1R5-E1V 1.5
MAX6501,LED M5V 5
ICH4-M,EC/KBC S5V 5
PSC MCV 5
DC Voltage
(V)
3.3
5
5
5
3.3
5
4.7
AD1981B,MIC A4R7-P4V 4.7
ICH4-M R3V 2.0 - 3.3
PORTEGE R100 Maintenance Manual (960-440) 1-15
1 Hardware Overview 1.6 Batteries
1.6 Batteries
The PC has the following two batteries.
❑ Main battery
❑ Real time clock (RTC) battery
Table 1-6 lists the specifications for these two batteries.
Table 1-6 Battery specifications
Battery Name Battery Element Output Voltage Capacity
Main battery (XM2043P02) Lithium ion 10.8V 1600mAh
Real time clock (RTC) battery Nickel hydride 2.4 V 15 mAh
1.6.1 Main Battery
The main battery is the primary power supply for the computer when the AC adapter is not
connected. In resume (instant recovery) mode, the main battery maintains the current status
of the computer.
1-16 PORTEGE R100 Maintenance Manual (960-440)
1.6 Batteries 1 Hardware Overview
A
)
1.6.2 Battery Charging Control
Battery charging is controlled by a power supply microprocessor. The power supply
microprocessor controls power supply and detects a full charge when the AC adaptor and
battery are connected to the computer. The system charges the battery using quick charge or
trickle charge.
❑ Quick Battery Charge
When the AC adapter is connected, normal charging is used while the system is
turned on and quick charge is used while the system is turned off or in suspend mode.
(See Table 1-7)
Table 1-7 Time required for charges of main battery
Charging Time
Normal charge
Quick charge About 2 hours
bout 2 to 4 hours
Quick battery charge is stopped in the following cases.
1. The main battery is fully charged
2. The main battery is removed
3. Main battery or AC adapter voltage is abnormal
4. Charging current is abnormal
❑ Trickle charge
When the main battery is fully charged and the AC adapter is plugged in, the power
supply microcontroller automatically switches from quick charge to trickle charge.
1.6.3 RTC Battery
The RTC battery provides the power supply to maintain the date, time, and other system
information in memory. Table 1-8 lists the battery charging time and data preservation times.
Table 1-8 RTC battery charging/data preservation time
Data preservation time (when fully charged
PORTEGE R100 Maintenance Manual (960-440) 1-17
1 month
1 Hardware Overview 1.7 AC Adapter
1.7 AC Adapter
The AC adapter is also used to charge the battery.
Table 1-9 lists the AC adapter specifications.
Table 1-9 AC adapter specifications
Parameter Specification
Input voltage AC 100 to 240V
Input frequency 50Hz/60Hz
Input current(MAX) 1.2A (100VAC)
Output voltage DC 15V
Output current 3.0A
1-18 PORTEGE R100 Maintenance Manual (960-440)
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