2 Troubleshooting Procedures

2.4 System Board Troubleshooting

Table 2-5 Printer port LED boot mode status (1/7)

LED Status

Test item

Message

 

 

 

 

Start

Clearance of software reset bit

 

 

 

 

 

Permission of A20 line

 

 

 

 

 

Initialization for special register and Intel chip set

 

 

 

B0h

Flash ROM check

PIT CH0 initialization (for HOLD_ON)

 

 

 

 

 

BIOS rewrite flag initialization

 

 

 

 

 

Checksum check (FEF00000h-FEFF7FFFh)

 

 

 

 

 

Transition to protected mode

 

 

 

 

 

Boot block checksum (HLT when checksum error

 

 

occurred.)

 

 

 

 

 

Checksum check except boot block

 

 

 

B1h

EC/KBC rewrite check

Transition to BIOS rewriting when required

 

 

 

B2h

Start initializing the SC

(HLT when Initialization for SC error occurred) B3H

 

 

 

 

 

(HLT when processing the SC can not be continued by

 

 

the HW failure) B4H

 

Executing initialization of KBC

transmission of KB enable command

 

sequence

 

 

 

 

Key check at Boot Block

 

 

 

B5h

Enabling CPU cache

 

 

 

 

B6h

BIOS signature check

 

 

 

 

 

BIOS rewrite request check

Checksum error except boot block

 

 

(When key rewriting is requested, go to BIOS rewrite

 

 

process)

B7h

System BIOS rewrite transition to

 

 

IRT

 

 

Rewriting BIOS

 

 

 

 

 

H/W initialization

Setting of base for Power Management I/O Space

 

 

 

 

 

Permission of BIOS writing

 

 

 

 

 

Serial interrupt control

 

 

 

 

 

Releasing BIOS rewrite protection

 

 

 

 

 

Enabling SM Bus I/O space

 

 

 

 

 

Enabling SM Bus access

 

 

 

 

 

Opening work I/O for SDRAM initialization

 

 

 

 

 

Setting FDC port

 

 

 

 

Initialization of PIT channel 1

 

 

(Setting refresh interval to 30ms)

 

 

Initialization of PIT, DMAC, PIC

 

 

 

 

 

Prohibition of cache

 

 

 

 

2-20

TECRA M2 Maintenance Manual (960-468)

Page 74
Image 74
Toshiba tecra m2 manual LED Status Test item Message

tecra m2 specifications

The Toshiba Tecra M2 is a versatile and robust laptop that was designed for business professionals and mobile users. Released in the early 2000s, this model earned a reputation for its reliability, performance, and build quality. It combines essential features that provide a seamless computing experience, making it an appealing choice for those seeking a portable yet capable device.

One of the defining characteristics of the Tecra M2 is its lightweight design. Weighing in at approximately 4.5 pounds, the laptop is easy to carry, making it suitable for frequent travel. The sleek profile and durable chassis ensure that it withstands the rigors of daily use.

The Tecra M2 is equipped with a high-resolution 15-inch display, offering a comfortable viewing area for both work and multimedia tasks. With a resolution of up to 1400x1050 pixels, the screen delivers sharp images and vibrant colors, enhancing productivity during presentations or while editing documents.

Powering the Tecra M2 is an Intel Pentium M processor, which helps to optimize battery life while providing sufficient performance for most business applications. This processor, combined with the laptop's up to 2GB of RAM, allows users to run multiple applications simultaneously without experiencing lag.

In terms of storage, the Tecra M2 supports a variety of configurations, including hard drives that range from 40GB to 80GB. This flexibility allows users to choose a setup that best fits their storage needs and usage patterns. Additionally, the laptop offers an optical drive for reading and writing CDs and DVDs, which was essential for data transfer and multimedia consumption during its time.

Connectivity is another strong point for the Tecra M2. It features multiple ports, including USB 2.0, Ethernet, and VGA, ensuring compatibility with a wide array of peripherals and networks. Wireless connectivity options such as Wi-Fi allow users to stay connected wherever they go, enhancing its appeal for mobile professionals.

The Tecra M2 is also designed with user comfort in mind. The keyboard is well-spaced and provides a satisfying tactile feedback, making typing efficient for extended periods. Its ergonomic design helps reduce strain on the hands, which is crucial for those who spend long hours working on their laptops.

In summary, the Toshiba Tecra M2 stands out for its combination of portability, performance, and durability. With its solid construction, respectable specifications, and a range of connectivity options, it addresses the needs of business users looking for a trustworthy computing solution during the early 2000s.