Toshiba Personal Computer Satellite M30-35 Series Maintenance Manual
First edition September 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 Satellite M30 Series 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
Intel, Intel SpeedStep and Banias are trade marks or registered trademarks of Intel
Corporation or its subsidiaries in the United States and other countries/regions.
Windows and Microsoft are registered trademarks of Microsoft Corporation.
Photo CD is a trademark owned by its proprietor and used by TOSHIBA under license.
Bluetooth is a trademark owned by its proprietor and used by TOSHIBA under license.
ii Satellite M30-35 Maintenance Manual (960-455)
Page 3
Preface
This maintenance manual describes how to perform hardware service maintenance for the
Toshiba Personal Computer Satellite M30-35 Series.
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. 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.
Satellite M30-35 Maintenance Manual (960-455) iii
Page 4
The manual is divided into the following parts:
Chapter 1 Hardware Overview describes the Satellite M30 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
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 computer that appears on its display is presented in the type face
below:
Format complete
System transferred
Satellite M30-35 Maintenance Manual (960-455) v
Page 6
Table of Contents
Chapter 1 Hardware Overview
1.1 Features ......................................................................................................................1-1
1.2 System Unit Block Diagram ...................................................................................... 1-7
1.3 3.5-inch Floppy Disk Drive (USB External) ........................................................... 1-14
1.4 2.5-inch Hard Disk Drive......................................................................................... 1-15
The Toshiba Satellite M30 Personal Computer uses extensive Large Scale Integration (LSI),
and Complementary Metal-Oxide Semiconductor (CMOS) technology extensively to provide
compact size, minimum weight, low power usage and high reliability. This computer
incorporates the following features and benefits: The product configuration is BTOcompatible so that a system can be designed to suit a specific purpose.
Microprocessor
The Satellite M30 computer is equipped with an Intel Banias Processor, which
incorporates a math co-processor, a 64KB L1 cache memory and a 1MB L2 cache
memory. The processor runs with one of the following speeds:
This processor operates at 1.35V-0.8V and 100MHz bus clock
Chipset
The Satellite M30 is equipped with Intel Odem+, Intel ICH4-M and YEBISU-SS.
Cache Memory
64KB primary cache (in CPU) and 1MB secondary cache (in CPU)
GPU Controller
The computer has a nVIDIA NV34M controller. The internal VRAM is 32MB/64M,
DDR200MHz.
Memory
Two DDR SO-DIMM slots are available for installation of PC2700 compatible 256,
512MB and 1GB memory modules. The memory is expandable up to 2GB.
Built-in HDD
The computer has a 40GB, 60GB or 80GB internal drive. 2.5 inch x 9.5mm height.
USB FDD
An external two-mode 3.5-inch FDD, which connects with a USB port, supports 720KB
and 1.44MB formats and enables booting from system FD.
Satellite M30-35 Maintenance Manual (960-455)1-1
Page 16
1 Hardware Overview 1.1 Features
CD-RW/DVD Drive
This drive is a combination of DVD-ROM and CD-R/RW Drive. . It is full-size and runs
either 12cm (4.72-inch) or 8cm (3.15-inch) DVD/CDs without an adaptor. This drive
reads CD-ROM at maximum 24-speed, reads DVD-ROM at maximum 8-speed writes
CD-R at maximum 24-speed, and writes CD-RW at maximum 24-speed.
DVD-R/RW Drive
A full-size DVD-R/-RW drive module lets you record data to rewritable CD/DVDs as
well as run either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It
reads DVD-ROMs at maximum 8 speed, CD-ROMs at maximum 24 speed and CD-Rs at
maximum 16 speed. It writes CD-R at up to 16 speed, CD-RW at up to 10 speed, DVD-R
and DVD-RW at single speed.
DVD Multi Drive
This drive is a combination of CD-R/RW, DVD-R/RW and DVD-RAM Drive. It is fullsize and runs either 12cm (4.72-inch) or 8cm (3.15-inch) DVD/CDs without an adaptor.
This drive reads CD-ROM at maximum 24-speed, reads DVD-ROM at maximum 8-speed
writes CD-R at maximum 16-speed, writes CD-RW at maximum 8-speed, writes DVD-R
at maximum 2-speed, writes DVD-RW at maximum 1-speed,.and writes DVD-RAM at
maximum 2-speed.
Display
The display comes in the following three types:
15.4” WXGA-TFT color display, resolution 1280(H)×800(V), 16M colors •
A high-resolution external monitor connected to the computer can display up to
2048(H)×1536(V), at 16M colors.
Keyboard
An-easy-to-use 85(US)/86(UK)-key keyboard provides a numeric keypad overlay for fast
numeric data entry or for cursor and page control. The keyboard also includes two keys
that have special functions in Microsoft Windows 2000/X P. It supports software that
uses a 101- or 102-key enhanced keyboard.
Touch pad
Touch pad is installed as a pointing device.
Batteries
The computer has two batteries: a rechargeable Lithium-Ion main battery pack and RTC
battery (that backs up the Real Time Clock and CMOS memory).
1-2 Satellite M30-35 Maintenance Manual (960-455)
Page 17
1.1 Features 1 Hardware Overview
Universal Serial Bus (USB2.0)
Three USB ports are provided. The ports comply with the USB2.0 standard, which
enables data transfer speeds 40 times faster than USB1.1 standard. USB1.1 is also
supported.
IEEE 1394 port
The computer comes with one IEEE 1394 port. It enables high-speed data transfer directly
from external devices such as digital video cameras.
Parallel port
The parallel port enables connection of parallel printer or other parallel devices. (ECP
compatible)
External monitor port
The port enables connection of an external monitor, which is recognized automatically by
Video Electronics Standards Association (VESA) Display Data Channel (DDC) 2B
compatible functions.
PC card slot
The PC card slot (PCMCIA) accommodates one 5mm Type II card. The slot support 16bit PC cards and Card Bus PC cards. CardBus supports 32-bit PC cards.
SD Card
An SD Card Slot can accommodate Secure Digital flash memory cards with various
capacities. SD cards let you easily transfer data from devices, such as digital cameras and
Personal Digital Assistants, that use SD Card flash-memory.
Infrared port
The infrared port is compatible with Fast InfraRed (FIR) standards enabling cableless 4
Mbps, 1.152 Mbps, 115.2 kbps, 57.6 kbps, 38.4 kbps, 19.2 kbps or 9.6 kbps data transfer
with Infrared Data Association (IrDA) 1.1 compatible external devices.
Satellite M30-35 Maintenance Manual (960-455)1-3
Page 18
1 Hardware Overview 1.1 Features
Sound system
The sound system is equipped with the following features:
AC 97 Link •
•
•
•
•
•
•
Sound CODEC: STAC9750
Stereo speakers
Built-in Microphone (Mono)
Volume control knob
Stereo Headphone jack
External microphone jack
Video-out jack
The video jack enables to transfer NTSC or PAL data to external devices connected with
S-Video cable.
Internal modem
The internal modem is equipped as a modem daughter card (MDC).
The internal modem provides capability for data and fax communication and supports
V.90/92. For data reception it operates at 56,000bps and for data transmission it operates
at 33,600bps. For fax transmission it operates at 14,400bps. It is also equipped with
Speakerphone and TAM (Telephony Answering Machine) function. The speed of data
transfer and fax depends on analog telephone line conditions. It has an RJ11 modem jack
for connecting to a telephone line. Both of V.90 and V.92 is supported in USA and
Canada. In other regions, only V.90 is available.
Internal LAN
The computer is equipped with LAN circuits that support Ethernet LAN (10 megabits per
second, 10BASE-T), Fast Ethernet LAN (100 megabits per second, 100 BASE-Tx). It also
supports Wakeup on LAN (WOL) and Magic Packet.
Mini PCI Card slot (1 slot)
Some computers in this series are equipped with a wireless LAN mini-PCI card that is
compatible with other LAN systems based on Direct Sequence Spread
Spectrum/Orthogonal Frequency Division Multiplexing radio technology that complies
with the IEEE802.11 Standard (Revision A, B or G) and Turbo Mode. Revisions A and G
support a data transfer rate up to 54 Mbit/s. Revision-B supports a data transfer rate up to
11 Mbit/s. Turbo Mode supports a data transfer rate up to 108 Mbit/s.
1-4 Satellite M30-35 Maintenance Manual (960-455)
Page 19
1.1 Features 1 Hardware Overview
Internet button
This button launches an Internet browser. If the computer’s power is off, you can press
this button to turn on the computer’s power and launch the browser automatically in one
step.
TOSHIBA Console button
This button launches an application automatically. The default is TOSHIBA Console.
S-Video out button
Pressing this button sets the display device to TV (Video out). Pressing it again returns to
LCD.
Satellite M30-35 Maintenance Manual (960-455)1-5
Page 20
1 Hardware Overview 1.1 Features
The front of the computer is shown in figure 1-1 and the system unit configuration is shown
in figure 1-2.
Figure 1-1 Front of the computer
Figure 1-2 System unit configuration
1-6 Satellite M30-35 Maintenance Manual (960-455)
Page 21
1.2 System Unit Block Diagram 1 Hardware Overview
1.2 System Unit Block Diagram
Figure 1-3 is a block diagram of the system unit.
Internal
Touch Pad
Figure 1-3 System unit block diagram
Satellite M30-35 Maintenance Manual (960-455) 1-7
Page 22
1 Hardware Overview 1.2 System Unit Block Diagram
The system unit is composed of the following major components:
Processor
Intel Banias Processor 1.40GHz •
– Processor core speed: 1.40GHz (Performance Mode at 1.35V) and 1.20GHz
(Battery Optimized Mode at 0.85V)
– Processor bus speed: 400MHz
– Integrated L1 cache memory: 32KB instruction cache and 32KB write-back
data cache, 4-way set associative
– Integrated L2 cache memory: 1MB ECC protected cache data array, 8-way set
associative
– Integrated NDP
•
Intel Banias Processor 1.50GHz
– Processor core speed: 1.50GHz (Performance Mode at 1.35V) and 1.20GHz
(Battery Optimized Mode at 0.85V)
– Processor bus speed: 400MHz
– Integrated L1 cache memory: 32KB instruction cache and 32KB write-back
data cache, 4-way set associative
– Integrated L2 cache memory: 1MB ECC protected cache data array, 8-way set
associative
– Integrated NDP
•
Intel Banias Processor 1.60GHz
– Processor core speed: 1.60GHz (Performance Mode at 1.35V) and 1.20GHz
(Battery Optimized Mode at 0.85V)
– Processor bus speed: 400MHz
– Integrated L1 cache memory: 32KB instruction cache and 32KB write-back
data cache, 4-way set associative
– Integrated L2 cache memory: 1MB ECC protected cache data array, 8-way set
associative
– Integrated NDP
•
Intel Banias Processor 1.70GHz
– Processor core speed: 1.70GHz (Performance Mode at 1.35V) and 1.20GHz
(Battery Optimized Mode at 0.85V)
– Processor bus speed: 400MHz
– Integrated L1 cache memory: 32KB instruction cache and 32KB write-back
data cache, 4-way set associative
– Integrated L2 cache memory: 1MB ECC protected cache data array, 8-way set
associative
– Integrated NDP
1-8 Satellite M30-35 Maintenance Manual (960-455)
Page 23
1.2 System Unit Block Diagram 1 Hardware Overview
Memory
Two memory slots are provided. Expansion up to 2GB (2,048MB) is available.
– Banias Processor System Bus Support
– DRAM Controller supporting DDR333/DDR266/DDR200, 1GB max
– Accelerated Graphics Port Interface: adheres to AGP2.0, AGP×4 mode
– Hub Link Interface
– 593-ball 37.5×37.5 mm FC-BGA package
Intel ICH4-M (South Bridge)
•
One Intel 82801LAM is used.
•
This gate array has the following features:
– Hub Link Interface
– PCI Rev2.2 Interface (6 PCI REQ/GNT Pairs)
– BusMaster IDE Controller (Ultra ATA 100/66/33)
– USB 1.1/2.0 Controller 6 Prots (EHCI: Enhanced Host Controller)
– I/O APIC (ACPI 1.06)
– SMBus2.0 Controller
– FWH Interface (BIOS)
– LPC Interface (EC/KBC, Super I/O)
– IRQ Controller
– Serial Interrupt Controller
– Power Management Controller
– Deeper Sleep (C4) Support
– Suspend/Resume Control
– AC'97 2.2 Interface
– Internal RTC
– Internal LAN Controller (WfM2.0)
– 421-ball 31×31mm BGA Package
Satellite M30-35 Maintenance Manual (960-455)1-9
Page 24
1 Hardware Overview 1.2 System Unit Block Diagram
PC Card Controller Gate Array
One YEBISU-SS gate array is used. •
•
This gate array has the following functions and components.
– Intel platform compatibility
– Firmware hub hardware interface mode
– Industry-standard packages
– Two configurable interfaces
– 4Mbits of flash memory for platform code/data nonvolatile storage
– Address/Address-Multiplexed (A/A Mux) interface/mode
– Case temperature operating range
– Vcc: 3.3V ± 0.3V
– Vpp: 3.3V and 12V for fast programming (80 hours maximum)
– 4Mbits of flash memory are used as shown below:
– 64KB are used for VGA-BIOS.
– 192KB are used for system BIOS.
– 8KB are used for plug and play data area.
– 8KB are used for password security.
– 16KB are used for boot strap.
– 64KB are used for ACPI P code.
– 64KB are used for LOGO.
– 64KB are reserved for LAN BIOS.
– 32KB are reserved.
One Mitsubishi M306K9FCLRP micon chip functions as both EC and KBC.
•
EC
This controller controls the following functions:
– Power supply sequence
– Thermal conditions
– LEDs
– Beep
– Device ON/OFF
– Fan speed
– Universal I/O port
– Docker Docking Sequence
– Battery capacity check
– Forced reset
– Flash rewriting
– EC interface
– I2C communication
– EC access
– Slim Select Bay Control
•
KBC
This controller has the following functions:
– Scan controller to check status of keyboard matrix
– Interface controller between the keyboard scan controller and the system
– Control of switching and simultaneous operation of the accupoint/external
PS/2 mouse and of the internal keyboard/external PS/2 keyboard
PSC (Power Supply Controller)
Satellite M30-35 Maintenance Manual (960-455)1-11
Page 26
1 Hardware Overview 1.2 System Unit Block Diagram
One TMP87PM48U chip is used. •
•
This controller controls the power sources.
Clock Generator
•
One ICS950812CGT is used.
•
This device generates the system clock.
Modem Controller
•
One built-in Askey-made 1456VQL4A(INT) modem card
•
This controller has the following functions:
– Digital line protection support
– Ring wake up support
– AC97 interface
– Supports V.92 56k Modem/Fax.
Internal LAN Controller
•
One Kinnereth-R (82562EP) chip is used.
– Supports 10/100Mbit Ethernet.
– Supports LED and WOL.
Wireless LAN
– Mini-PCI Type III 1slot
– Supports Kill SW.
– Supports Wireless LAN through PCMCIA
– 802.11b, 802.11a/b: Intel-made
– 802.11b/g, 802.11a/b/g: Atheros-made
Super I/O
•
One LPC 47N227 chip is used.
– This gate array has the following features:
– Floppy Disk Controller
– Serial Port Controller
– Infrared Communications Controller
– Parallel Port Controller
The removable HDD is a random access non-volatile storage device. It has a non-removable
2.5-inch magnetic disk and mini-Winchester type magnetic heads.
The computer supports a 40GB, 60GB and 80GB HDD.
The HDD is shown in figure 1-5. Specifications are listed in Table 1-2.
This drive is a combination of DVD-ROM and CD-R/RW Drive. . It is full-size and runs
either 12cm (4.72-inch) or 8cm (3.15-inch) DVD/CDs without an adaptor. This drive reads
CD-ROM at maximum 24-speed, reads DVD-ROM at maximum 8-speed writes CD-R at
maximum 24-speed, and writes CD-RW at maximum 24-speed.
The CD-RW/DVD-ROM drive is shown in figure 1-6. Specifications are listed in Table 1-3.
Figure 1-6 CD-RW/DVD-ROM drive
Table 1-3 CD-RW/DVD-ROM drive specifications
Matushita G8CC0001C210
Item
ATAPI Burst (MB/s) 33.3 (Ultra DMA mode 2)
Average Access time (ms) 180 typ 130 typ
Data Buffer Capacity (MB) 2
Supported Format CD:
DVD-ROM mode CD-ROM mode CD-R/CD-RW
16.6 (PIO Mode 0 to 4, Multi word DMA mode 0 to 2)
A full-size DVD-R/-RW drive module lets you record data to rewritable CD/DVDs as well
as run either 12 cm (4.72") or 8 cm (3.15") CD/DVDs without using an adaptor. It reads
DVD-ROMs at maximum 8 speed, CD-ROMs at maximum 24 speed and CD-Rs at
maximum 16 speed. It writes CD-R at up to 16 speed, CD-RW at up to 10 speed, DVD-R
and DVD-RW at single speed.
The CD-RW/DVD-ROM drive is shown in figure 1-7. Specifications are listed in Table 1-4.
This drive is a combination of CD-R/RW, DVD-R/RW and DVD-RAM Drive. It is full-size
and runs either 12cm (4.72-inch) or 8cm (3.15-inch) DVD/CDs without an adaptor. This
drive reads CD-ROM at maximum 24-speed, reads DVD-ROM at maximum 8-speed writes
CD-R at maximum 16-speed, writes CD-RW at maximum 8-speed, writes DVD-R at
maximum 2-speed, writes DVD-RW at maximum 1-speed,.and writes DVD-RAM at
maximum 2-speed.
The DVD multi drive is shown in Figure 1-8. Specifications for the DVD multi drive are
described in table 1-5.
Figure 1-8 DVD-Multi drive
Table 1-5 DVD-Multi drive specifications (1/2)
Item
ATAPI Burst (MB/sec) 33.3 (Ultra DMA mode 2)
16.6 (PIO Mode 0 to 4, Multi word DMA mode 0 to 2)
The keyboard is mounted 85(US)/86(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.
The computer has three types of batteries as follows:
Main battery pack
RTC battery
The battery specifications are listed in Table 1-9.
Table 1-9 Battery specifications
Battery name Material Output voltage Capacity
Main battery Lithium-Ion (6-cell) 10.8 V 4,400mAh
Lithium-Ion (12 cell) 10.8 V 8,800mAh
RTC battery Nickel-metal hydride 2.4 V 16
1.11.1 Main Battery
The removable main battery pack is the computer’s main power source when the AC adaptor
is not attached. The main battery maintains the state of the computer when the computer
enters in resume mode.
Battery charging is controlled by a power supply microprocessor. The microprocessor
controls whether the charge is on or off and detects a full charge when the AC adaptor and
battery are attached to the computer. The system charges the battery using quick charge.
Quick Battery Charge
When the AC adaptor is attached, there are two types of quick charge: quick charge 1 when
the system is powered off and quick charge 2 when the system is powered on.
Table 1-10 Time required for quick charges
Status Charging time
Quick charge 1
(Power off)
(Power on)
12 cell About 3.4 hours
6 cell About 2.7 hours
12 cell About 8.0 to 20.0 or longer Quick charge 2
6 cell About 4.0 to 10.0 or longer
NOTE: The time required for quick charge 2 is affected by the amount of power the system
is consuming. Use of the fluorescent lamp and frequent disk access diverts power and
lengthens the charge time.
If any of the following occurs, the battery quick charge process stops.
1. The battery becomes fully charged.
2. The AC adaptor or battery is removed.
3. The battery or output voltage is abnormal.
Detection of full charge
A full charge is detected only when the battery is charging at quick charge. A full charge is
detected under any of the following conditions:
1. The current in the battery charging circuit drops under the predetermined limit.
2. The charging time exceeds the fixed limit.
Satellite M30-35 Maintenance Manual (960-455)1-31
Page 46
1 Hardware Overview 1.11 Batteries
1.11.3 RTC battery
The RTC battery provides power to keep the current date, time and other setup information
in memory while the computer is turned off. Table 1-11 lists the charging time and data
preservation period of the RTC battery.
Table 1-11 RTC battery charging/data preservation time
Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the computer is
causing the computer to malfunction. The FRUs covered are:
1. Power supply 5. Keyboard 9. LAN
2. System Board 6. Display 10. Wireless LAN
3. Floppy Disk Drive 7. Optical Drive 11. Sound components
4. Hard Disk Drive 8. Modem 12. SD Card Slot
The Diagnostics Disk operations are described in Chapter 3. Detailed Replacement Procedures are given in Chapter 4, Replacement Procedures.
The following tools are necessary for implementing the troubleshooting procedures:
1. Diagnostics Disk
2. Phillips screwdriver (2 mm)
3. LH-STIX screwdriver (in some models)
4. Toshiba MS-DOS system disk(s)
(You must install the following onto the disk: SYS.COM, FORMAT.COM,
FDISK.COM and FDISK.EXE)
5. Formatted work disk for floppy disk drive testing
6. Cleaning kit for floppy disk drive troubleshooting
7. Parallel port wraparound connector
8. PC card wraparound connector
9. Multimeter
10. External USB FDD
11. External USB keyboard and Mouse
12. Headphone
13. Microphone
14. USB test module and USB cable
15. TOSHIBA CD-ROM TEST DISK (ZA1217P01/P000204190)
16. CD-RW Media (RICOH-made x4 recommended)
17. DVD-ROM TSD-1 (TOSHIBA-EMI DVD Test Media)
18. Music CD
19. RJ11 connector checker
20. Speaker
21. Personal computer that can communicate by wireless LAN for wireless LAN
troubleshooting
Use the flowchart in Figure 2-1 as a guide for determining which troubleshooting procedures
to execute. Before going through the flowchart steps, verify the following:
Ask the user if a password is registered and, if it is, ask him or her to enter the
password. If the user has forgotten the system password, perform the following
procedure at the appropriate step in the flowchart in Figure 2-1:
Verify with the customer that Toshiba Windows is installed on the hard disk. Non-
Windows operating systems can cause the computer to malfunction.
Make sure all optional equipment is removed from the computer.
Make sure the External USB floppy disk drive is empty.
If the diagnostics program cannot detect an error, the problem may be intermittent. The
Running Test program should be executed several times to isolate the problem. Check the
Log Utilities function to confirm which diagnostic test detected an error, then perform the
appropriate troubleshooting procedures as follows:
1. If an error is detected on the system test, memory test, real timer test, perform the
System Board and Processor Module Troubleshooting Procedures in Section 2.4.
2. If an error is detected on the floppy disk test, perform the FDD Troubleshooting
Procedures in Section 2.5.
3. If an error is detected on the hard disk test, perform the HDD Troubleshooting
Procedures in Section 2.6.
4. If an error is detected on the keyboard test, perform the Keyboard Troubleshooting
Procedures in Section 2.7.
5. If an error is detected on the display test, perform the Display Troubleshooting
Procedures in Section 2.8.
6. If an error is detected on the Optical Drive test, perform the Optical Drive
Troubleshooting Procedures in Section 2.9.
7. If an error is detected on the modem test, perform the Modem Troubleshooting
Procedures in Section 2.10.
8. If an error is detected on the LAN test, perform the LAN Troubleshooting Procedures
in Section 2.11.
9. If an error is detected on the Wireless LAN test, perform the Wireless LAN
Troubleshooting Procedures in Section 2.12.
10. If an error is detected on the sound test, perform the Sound Troubleshooting
Procedures in Section 2.13.
11. If an error is detected on the SD card test, perform the SD card slot Troubleshooting
Procedures in Section 2.14.
Satellite M30-35 Maintenance Manual (960-455) 2-5
Page 58
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
2.3 Power Supply Troubleshooting
The power supply controls many functions and components. To determine if the power
supply is functioning properly, start with Procedure 1 and continue with the other Procedures
as instructed. The procedures described in this section are:
Procedure 1: Icon Check
Procedure 2: Error Code Check
Procedure 3: Connection Check
Procedure 4: Charge Check
Procedure 5: Replacement Check
Procedure 1 Icon Check
The following Icons indicate the power supply status:
Battery icon
DC IN icon
The power supply controller displays the power supply status through the Battery icon and
the DC IN icon as listed in the tables below. To check the power supply status, install a
battery pack and connect an AC adapter.
Table 2-1 Battery Icon
Battery LED Power supply status
Lights orange Quick charge
Lights blue Battery is fully charged and AC adapter is connected.
Blinks orange
(even intervals)
Flashes orange The power switch is pressed on when the battery level is low.*2
Doesn’t light Any condition other than those above
The battery level becomes low while operating the computer on battery
power.*1
*1 Low Battery Hibernation will be executed soon.
*2 Low Battery Hibernation has already been executed.
2-6 Satellite M30-35 Maintenance Manual (960-455)
Page 59
2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures
Table 2-2 DC IN icon
DC IN icon Power supply status
Lights blue DC power is being supplied from the AC adapter.
Blinks orange Power supply malfunction*3
Doesn’t light Any condition other than those above
*3 When the power supply controller detects a malfunction, the DC IN LED
blinks and an error code is displayed.
If the icon blinks, execute the followings:
1. Remove the battery and AC adapter to cut power supply to the computer.
2. Reinstall the battery and AC adapter.
If the LED still blinks, perform the followings:
Check 1 If the DC IN icon blinks orange, go to Procedure 2.
Check 2 If the DC IN icon does not light blue, go to Procedure 3.
Check 3 If the battery icon does not light orange or blue, go to Procedure 4.
Satellite M30-35 Maintenance Manual (960-455) 2-7
Page 60
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
Procedure 2 Error Code Check
If the power supply microprocessor detects a malfunction, the DC IN icon blinks orange. The
blink pattern indicates an error as shown below.
Start Off for 2 seconds
Error code (8 bit)
“1” On for one second
“0” On for a half second
Interval between data bits Off for a half second
The error code begins with the least significant digit.
Example: Error code = 12h (Error codes are given in hexadecimal format.)
2-8 Satellite M30-35 Maintenance Manual (960-455)
Page 61
2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures
Check 1 Convert the DC IN icon blink pattern into the hexadecimal error code and
compare it to the tables below.
The error code begins with the least significant digit.
Error code
Table 2-3 Error code
Error code Where Error occurs
1*h DC Power (AC Adapter)
2*h The 1st battery
4*h S3V output (3.3V)
5*h 1R5-C1V output (1.51V)
6*h 1R8-C1V output (1.804V)
7*h PPV output (CPU core voltage)
8*h 1R2-P1V output (1.21V)
9*h E5V output (5.0V)
A*h E3V output (3.3V)
B*h 2R5-P2V output (for VGA: 2.51V)
C*h PGV output (for VGA core: 1.20V)
D*h 1R25-P1V output (1.251V)
E*h 2R5-B2V output (2.51V)
Satellite M30-35 Maintenance Manual (960-455) 2-9
Page 62
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
Check 1 Compare the patterns in the hexadecimal error code to the tables below.
DC IN
Error code Meaning
10h AC Adaptor output voltage is over 16.5 V.
11h Advanced Port Replicator output voltage is over 16.5 V.
12h Current from the DC power supply is over the limit (7.00 A).
13h Current from the DC power supply is over the limit (0.5 A), when there
is no load.
14h Current sensing IC is not normal, when there is no load.
Main Battery
Error code Meaning
20h Over voltage has been detected.
21h Main battery charge current is over 7.00 A.
S3V output
Error code Meaning
1R5-C1V output
Error code Meaning
22h Main battery discharge current is over 0.5 A, when there is no load.
23h Main battery charge current is over 4.3 A, when the AC adapter is not
directly connected.
24h Current sensing IC is not normal, when there is no load.
25h Main battery charge current is over 0.3 A.
40h S3V voltage is 3.14 V or under, when the computer is powered on/off.
45h S3V voltage is 3.14 V or under at power on.
50h 1R5-C1V voltage is over 1.80 V, when the computer is powered on/off.
51h 1R5-C1V voltage is 1.275V or under, when the computer is powered
on.
52h 1R5-C1V voltage is 1.275V or under, when the computer is booting up.
53h 1R5-C1V voltage is 1.275V or under, when the computer is
suspended.
54h 1R5-C1V voltage is not normal, when the computer is suspended.
55h 1R5-C1V voltage is 1.275V or under at power on.
2.3 Power Supply Troubleshooting 2 Troubleshooting Procedures
Procedure 4 Charge Check
The power supply may not charge the battery pack. Perform the following procedures:
1. Reinstall the battery pack.
2. Attach the AC adaptor and turn on the power. If you cannot turn on the power, go to
Procedure 5.
3. Run the Diagnostic test, go to System test and execute subtest 06 (Quick charge)
described in Chapter 3.
4. When charge is complete, the diagnostics test displays the result code. Check the
result code against the table below and perform any necessary check.
Result code Contents Check items
0 The battery is charging normally. Normal
1 The battery is fully charged. Normal
2 The AC adaptor is not connected. Check 1
3 The AC adaptor’s output voltage is not normal. Check 1
4 The battery is not installed. Check 2
5 The battery’s output voltage is not normal. Check 3
6 The battery’s temperature is not normal. Check 4
7 A bad battery is installed. Check 2
8 Any other problems. Check 5
Check 1 Make sure the AC adaptor and AC power cord are firmly plugged into the DC IN
socket and the wall outlet. If these cables are connected correctly, replace the AC
adaptor (and/or AC power cord, if necessary).
Check 2 Make sure the battery is properly installed. If the battery is properly installed, go
to Check 3.
Check 3 The battery pack may be completely discharged. Wait a few minutes to charge the
battery pack. If the battery pack is still not charged, go to Check 4.
Check 4 The battery’s temperature is too hot or cold. Return the temperature to a normal
operating condition. If the battery pack still is not charged, go to Check 5.
Check 5 Replace the battery pack with a new one. If the battery pack still is not charged,
2 Troubleshooting Procedures 2.3 Power Supply Troubleshooting
Procedure 5 Replacement Check
The system board processor module may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures. Check the
connection between the AC adaptor and system board. After checking the connections,
perform the following Check 1:
Check 1 Replace the AC adaptor with a new one. If the AC adaptor still does not function
properly, perform Check 2.
Check 2 Replace the system board with a new one following the steps described in Chapter
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
2.4 System Board Troubleshooting
This section describes how to determine if the system board is defective or not. Start with
Procedure 1 and continue with the other procedures as instructed. The procedures described
in this section are:
Procedure 1: Message Check
Procedure 2: Debugging port status Check
Procedure 3: Diagnostic Test Program Execution Check
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Procedure 1 Message Check
When the power is turned on, the system performs the Initial Reliability Test (IRT) installed
in the BIOS ROM. The IRT tests each IC on the system board and initializes it.
If an error message is shown on the display, perform Check 1.
If nothing is displayed, go to Procedure 2.
If an operating system is properly loaded, go to Procedure 4.
Check 1 If one of the following error messages displays on the screen, press the Run
Setup key as the message instructs. These errors occur, when the system
configuration preserved in the RTC memory (CMOS type memory) is not the
same as the actual configuration or when the data is lost.
If you press the Run Setup key as the message instructs, the SETUP screen
appears to set the system configuration. If any error message is displayed, perform
Check 2.
If error message (a) appears often when the power is turned on, replace the RTC
battery. If any other error message displays, perform Check 2.
(a) 0250: RTC battery is low
(b) 0251: CMOS checksum is inconsistent
(c) 0271: Check date and time settings
(d) 0290: ROM data is invalid
Check 2 If the following error message appears on the screen, press the Continue key as
the message instructs. This error occurs, when consumption of battery or failure
of system board loses the resumed data. Go to Procedure 3.
WARNING: RESUME FAILURE.
If any other error message displays, perform Check 3.
2.4 System Board Troubleshooting 2 Troubleshooting Procedures
Procedure 3 Diagnostic Test Program Execution Check
Execute the following tests from the Diagnostic Test Menu. Refer to Chapter 3, Tests and
Diagnostics, for more information on how to perform these tests.
1. System test
2. Memory test
3. Keyboard test
4. Display test
5. Floppy Disk test
6. Printer test
7. Async test
8. Hard Disk test
9. Real Timer test
10. NDP test
11. Expansion test
12. CD-ROM/DVD-ROM test
13. Wireless LAN test
14. Sound/LAN/Modem test
15. IEEE1394
If an error is detected during these tests, go to Procedure 4.
2 Troubleshooting Procedures 2.4 System Board Troubleshooting
Procedure 4 Replacement Check
The system board connectors may be disconnected. Disassemble the computer following the
steps described in Chapter 4, Replacement Procedures and perform Check 1.
Check 1 Visually check for the following:
a) Cracked or broken connector housing
b) Damaged connector pins
If connectors are in good condition, but there is still a problem, go to Check 2.
Check 2 The system board may be damaged. Replace the system board with a new one
following the steps described in Chapter 4, Replacement Procedures.
This section describes how to determine if the FDD is functioning properly. Perform the
steps below starting with Procedure 1 and continuing with the other procedures as required.
Procedure 1: FDD Head Cleaning Check
Procedure 2: Diagnostic Test Program Execution Check
Procedure 3: Connector Check and Replacement Check
Procedure 1 FDD Head Cleaning Check
FDD head cleaning operation details are given in Chapter 3, Tests and Diagnostics.
Insert the Diagnostics Disk in the computer’s floppy disk drive, turn on the computer and run
the test. Clean the FDD heads using the cleaning kit. If the FDD still does not function
properly after cleaning, go to Procedure 2.
If the test program cannot be executed, go to Procedure 3.
Procedure 2 Diagnostic Test Program Execution Check
Insert the Diagnostics Disk in the FDD, turn on the computer and run the test. Refer to
Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.
Floppy disk drive test error codes and their status names are listed in Table 2-5. Make sure
the floppy disk is formatted correctly and that the write protect tab is disabled. If any other
errors occur while executing the FDD diagnostics test, go to Check 1.
Table 2-5 FDD error code and status
Code Status
01h Bad command
02h Address mark not found
03h Write protected
04h Record not found
06h Media removed on dual attach card
08h DMA overrun error
09h DMA boundary error
10h CRC error
20h FDC error
40h Seek error
60h No FDD
80h Time out error (Not ready)
EEh Write buffer error
FFh Data compare error
Check 1 If the following message displays, release the write protect tab on the floppy disk.
If any other message appears, perform Check 2.
FDD-Write protected
Check 2 Make sure the floppy disk is formatted correctly. If it is, go to Procedure 3.
This section describes how to determine if the HDD is functioning properly. Perform the
steps below starting with Procedure 1 and continuing with the other procedures as required.
Procedure 1: Message Check
Procedure 2: Partition Check
Procedure 3: Format Check
Procedure 4: Diagnostic Test Program Execution Check
Procedure 5: Connector Check and Replacement Check
CAUTION: The contents of the hard disk will be erased when you execute the HDD
troubleshooting procedures. Transfer the contents of the hard disk to floppy
disks or other storage media.
Procedure 1 Message Check
When the computer’s HDD does not function properly, some of the following error messages
may appear on the display. Start with Check 1 below and perform the other checks as
instructed.
Check 1 If any of the following messages appear, go to Procedure 5. If the following
messages do not appear, perform Check 2.
HDC ERROR (After 5 seconds this message will disappear.)
or
IDE #0 ERROR (After 5 seconds this message will disappear.)
or
IDE #1 ERROR (After 5 seconds this message will disappear.)
Check 2 If either of the following messages appears, go to Procedure 2. If the following
messages do not appear, perform Check 3.
Insert system disk in drive
Press any key when ready .....
or
Non-System disk or disk error
Replace and press any key
Check 3 Make sure the Hard Disk option is set to not used. If it is set to not used, choose
another setting and restart the computer. If the problem still exists, go to
Procedure 2.
Insert the Toshiba MS-DOS system disk and restart the computer with U key holding down.
Perform the following checks:
Check 1 Type C: and press Enter. If you cannot change to drive C, go to Check 2. If you
can change to drive C, go to Check 3.
Check 2 Type FDISK and press Enter. Choose Display Partition Information from the
FDISK menu. If drive C is listed, go to Check 3. If drive C is not listed, return to
the FDISK menu and choose the option to create a DOS partition on drive C.
Restart the computer from the Toshiba MS-DOS system disk. If the problem still
exists, go to Procedure 3.
Check 3 If drive C is listed as active in the FDISK menu, go to Check 4. If drive C is not
listed as active, return to the FDISK menu and choose the option to set the active
partition for drive C. Restart the computer and then go to Procedure 3.
Check 4 Remove the FD and restart the computer. If the problem still exists, go to
The computer’s HDD is formatted using the low level format program and the MS-DOS
FORMAT program. To format the HDD, start with Check 1 below and perform the other
steps as required.
Check 1 Format the HDD and transfer system files using FORMAT C:/S/U. If the
following message appears on the display, the HDD is formatted.
Format complete
If an error message appears on the display, refer to the Toshiba MS-DOS Manual
for more information and perform Check 2.
Check 2 Using the Diagnostics Disk, format the HDD with a low level format option.
Refer to Chapter 3, Tests and Diagnostics for more information about the
diagnostic program.
If the following message appears on the display, the HDD low level format is
complete. Partition and format the HDD using the MS-DOS FORMAT command.
Format complete
If you cannot format the HDD using the Tests and Diagnostic program, go to
Procedure 4.
Procedure 4 Diagnostic Test Program Execution Check
The HDD test program is stored in the Diagnostics Disk. Perform all of the HDD tests in the
Hard Disk Drive Test. Refer to Chapter 3, Tests and Diagnostics, for more information about
the HDD test program.
If an error is detected during the HDD test, an error code and status will be displayed.
Replace the HDD with a new one following the instructions in Chapter 4, Replacement Procedures. The error codes and statuses are listed in Table 2-6. If an error code is not
generated and the problem still exists, go to Procedure 5.
The HDD may be disconnected, or the HDD or the system board may be damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks:
Check 1 Make sure the HDD is firmly connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still
an error, go to Check 2.
Check 2 The HDD may be damaged. Replace it with a new one following the instructions
in Chapter 4, Replacement Procedures. If the problem still exists, perform Check
3.
Check 3 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures.
To determine if the computer’s keyboard is functioning properly, perform the following
procedures. Start with Procedure 1 and continue with the other procedures as instructed.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
Execute the Keyboard Test in the Diagnostic Program. Refer to Chapter 3, Tests and
Diagnostics, for more information on how to perform the test program.
If an error occurs, go to Procedure 2. If an error does not occur, the keyboard is functioning
properly.
The keyboard, PAD I/F and PAD Switch may be disconnected or damaged. Disassemble the
computer following the steps described in Chapter 4, Replacement Procedures, and perform
the following checks:
1. If the keyboard malfunctions, start with Check 1.
2. If the PAD switch malfunctions, start with Check 3.
Check 1 Make sure the keyboard cable is securely connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still
an error, go to Check 2.
Check 2 The keyboard or its cable may be damaged. Replace it with a new one following
the instructions in Chapter 4, Replacement Procedures. If the problem still exists,
perform Check 5.
Check 3 Make sure the PAD switch cable is firmly connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 2. If there is still
an error, go to Check 4.
Check 4 The PAD switch board or PAD switch cable may be damaged. Replace it with a
new one following the instructions in Chapter 4, Replacement Procedures. If the
problem still exists, perform Check 5.
Check 5 The system board may be damaged. Replace it with a new one following the
instructions in Chapter 4, Replacement Procedures.
This section describes how to determine if the computer’s display is functioning properly.
Start with Procedure 1 and continue with the other procedures as instructed.
Procedure 1: External Monitor Check
Procedure 2: Diagnostic Test Program Execution Check
Procedure 3: Connector and Cable Check
Procedure 4: Replacement Check
Procedure 1 External Monitor Check
Connect an external monitor to the computer’s external monitor port, then boot the computer.
The computer automatically detects the external monitor.
If the external monitor works correctly, the internal LCD may be damaged. Go to Procedure
3.
If the external monitor appears to have the same problem as the internal monitor, the system
board may be damaged. Go to Procedure 2.
Procedure 2 Diagnostic Test Program Execution Check
The Display Test program is stored on the computer’s Diagnostics disk. This program checks
the display controller on the system board. Insert the Diagnostics disk in the computer’s
floppy disk drive, turn on the computer and run the test. Refer to Chapter 3, Tests and
Diagnostics for details. If an error is detected, go to Procedure 3.
The LCD Module is connected to the system board by an LCD/FL cable. The FL inverter
board is also connected to the system board by an LCD/FL cable. And the FL is connected to
the FL inverter board by the HV cable. The connectors may be disconnected from the system
board or the FL inverter board, or they may be damaged. Disassemble the computer
following the steps described in Chapter 4, Replacement Procedures.
If the connection is loose, reconnect firmly and restart the computer. If there is still an error,
go to Procedure 4.
The FL, FL inverter board, LCD module, and system board are connected to display circuits.
Any of these components may be damaged. Refer to Chapter 4, Replacement Procedures, for
instructions on how to disassemble the computer and then perform the following checks:
If the FL does not light, perform Check 1.
If characters or graphics are not displayed clearly, perform Check 4.
If some screen functions do not operate properly, perform Check 4.
If the FL remains lit when the display is closed, perform Check 5.
Check 1 Replace the FL with a new one following the instructions in Chapter 4,
Replacement Procedures and test the display again. If the problem still exists,
perform Check2.
Check 2 The LCD/FL cable or HV cable may be defective or damaged. Replace the
FL/LCD or HV cable with a new one following the instructions in Chapter 4,
Replacement Procedure and test the display again. If the problem still exists,
perform Check3.
Check 3 The FL inverter board may be defective or damaged. Replace the FL inverter
board with a new one following the instructions in Chapter 4, Replacement Procedure and test the display again. If the problem still exists, perform Check4.
Check 4 The LCD module may be defective or damaged. Replace the LCD module with a
new one following the instructions in Chapter 4, Replacement Procedure and test
the display again. If the problem still exists, perform Check 5.
Check 5 The system board may be defective or damaged. Replace it with a new one
following the instructions in Chapter 4, Replacement Procedure.
This section describes how to determine if the Optical Drive is functioning properly. Perform
the steps below starting with Procedure 1 and continue with the other procedures as required.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
The CD-ROM/DVD-ROM test program is stored in the Diagnostics Disk.
For the test, prepare a test CD-ROM, DVD-ROM, music CD and CD-RW Media.
Then insert the Diagnostics Disk in the computer’s floppy disk drive, turn on the computer
and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the
diagnostics test procedures.
If any errors occur while executing the CD-ROM/DVD-ROM test, go to Procedure 2.
The Optical Drive is connected to the system board. The connectors may be disconnected
from the system board or may be damaged. Disassemble the computer following the steps
described in Chapter 4, Replacement Procedures and perform the following checks:
Check 1 Make sure the Optical Drive is firmly connected to the system board.
If the connection is loose, reconnect firmly and repeat Procedure 1. If there is still
an error, go to Check 2.
Check 2 The Optical Drive may be defective or damaged. Replace the drive with a new
one. If there is still an error, go to Check 3.
Check 3 Replace the system board with a new one following the steps in Chapter 4,
This section describes how to determine if the computer's modem is functioning properly.
Perform the steps below starting with Procedure 1 and continuing with the other procedures
as required.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
The Sound/LAN/Modem test program is stored in the Diagnostics Disk.
For the test, prepare a test Sound/LAN/Modem.
Then insert the Diagnostics Disk in the computer’s floppy disk drive, turn on the computer
and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the
diagnostics test procedures.
If any errors occur while executing the Sound/LAN/Modem test, go to Procedure 2.
The Modem is installed as a modem daughter card (MDC). If the modem malfunctions, there
may be a bad connection between the MDC and the System Board. Or the MDC, System
Board or their connectors might be damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement Procedures and perform the following checks:
Check 1 Make sure the MDC cable is firmly connected to the MDC and make sure the
MDC is firmly connected to PJ3000 on the System Board.
MDC cable
If a connector is disconnected, connect it firmly and repeat Procedure 1. If the
Modem is still not functioning properly, perform Check 2.
Check 2 The MDC may be defective or damaged. Replace it with a new one following the
steps in Chapter 4, Replacement Procedures. If the Modem is still not functioning
properly, perform Check 3.
Check 3 The system board may be defective or damaged. Replace the System Board with a
new one following the steps in Chapter 4, Replacement Procedures.
2 Troubleshooting Procedures 2.12 LAN Troubleshooting
2.11 LAN Troubleshooting
This section describes how to determine if the computer's LAN is functioning properly.
Perform the steps below starting with Procedure 1 and continuing with the other procedures
as required.
Procedure 1: Diagnostic Test Program Execution Check
Procedure 2: Connector Check and Replacement Check
Procedure 1 Diagnostic Test Program Execution Check
The Sound/LAN/Modem test program is stored in the Diagnostics Disk.
For the test, prepare a test Sound/LAN/Modem.
Then insert the Diagnostics Disk in the computer’s floppy disk drive, turn on the computer
and run the test. Refer to Chapter 3, Tests and Diagnostics, for more information about the
diagnostics test procedures.
If any errors occur while executing the Sound/LAN/Modem test, go to Procedure 2.
Procedure 2 Connector Check and Replacement Check
A RJ45 jack with LAN cable is on the System Board. If the LAN malfunctions, the System
Board might be damaged.
Disassemble the computer following the steps described in Chapter 4, Replacement
Procedures.