This Toshiba Satellite Pro A300 service maintenance manual describes how to perform hardware service maintenance for the Toshiba Personal Computer Satellite Pro A300, referred to as Toshiba Satellite Pro A300 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. 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” indicates the existence of a hazard that could result in death or serious bodily injury, if the safety instruction is not observed. “Warning” indicates the existence of a hazard that could result in bodily injury, if the safety instruction is not observed. “Caution” indicates the existence of a hazard that could result in property damage, if the safety instruction is not observed. “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, RTC battery or backup 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.
The manual is divided into the following parts: Chapter 1 Hardware Overview describes the Toshiba Satellite Pro A300 Service Manual 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 the 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 Assignments, Keyboard scan/character codes, Key layout, BIOS Rewrite Procedures, EC/KBC Rewrite Procedures.
This Toshiba Satellite Pro A300 Service 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.
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