4.2. Troubleshooting

Please take note of the following two points with regard to troubleshooting:

1.Know-how of diagnosis upon occurrence of heavy troubles, e.g. ‘Set cannot be turned ON’, ‘Set fails to start’, ‘No display on screen’, etc.

2.Explanation of each trouble, mainly symptom of trouble in operation.

●Flow Chart

START

Pay attention to the following points when in pursuit of the cause of a troubleshooting.

1.Peripheral apparatus connected with the set should all be removed before operation check.

2.Make sure that cables, boards, etc. are not coming off, and recheck the contact condition.

Set cannot be supplied with current. Power lamp fails to light up.

Dark display on screen.

Screen fails to display.

Failure in starting

ACNG Adaptor/Battery

Output voltage

 

OK

 

 

 

Power lamp

 

NO

check

YES

 

Inverter board

 

NG

 

OK

 

 

 

LCD back

 

NO

light lighting

 

 

 

 

YES

NG

LCD unit

 

check

 

 

 

 

OK

 

 

 

BIOS operation

 

NO

check

 

 

 

 

YES

Result of

NG

 

POST

OK

 

 

 

 

 

 

 

Replace AC Adaptor/Battery

Check contact condition of power input terminal. Replace if defective.

Check Power SW. Replace if defective.

Replace inverter board.

Check inverter cable continuity. Replace if defective

Replace LCD back light.

Replace LCD unit.

Replace main board (Check fuse at power source).

Refer to POST

 

 

 

Replace main board.

error code table.

 

 

 

 

 

Not displayed properly on screen.

 

 

 

NG

 

 

 

 

 

 

 

Set-up utility

 

 

 

Heavy trouble e.g.,

 

Replace main board.

 

 

 

 

starting

 

 

 

 

 

 

 

‘Set cannot be turned

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OK

 

 

 

 

 

 

 

 

ON’, ‘Set fails to start’,

 

 

 

 

 

 

 

 

 

 

‘No display on

 

 

Return set-up utility setpoint to the state of ‘delivery from factory’.

 

screen’, etc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

NO

Check HDD cable connection and continuity.

 

 

 

 

 

HDD access

Replace if defective.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace HDD & Reinstall.

 

 

 

 

 

YES

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace main board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Main board

NG

 

 

 

 

 

 

 

 

Replace main board

 

 

 

 

 

 

 

check

 

 

 

 

 

 

 

 

 

 

 

Some or all keys cannot be input.

OK

Make sure of contact of K/B connector in use. Replace keyboard or main board.

Each kind of trouble in operation.

DVD/CD CALL not practicable.

*Clean DVD-ROM drive with an applicator.

Starts but operates unstably.

TroubleNO symptoms on some

of DVD or CD

YES

Replace DVD drive.

Replace main board.

Reinstall HDD.

Replace main board.

STARTEND

Check if there are any flaws on DVD or CD media. Since flaws may appear on specific media, DVD or CD media can be defective.

4-2

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Matsushita CF-74ECBAXBM manual Troubleshooting
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CF-74ECBAXBM specifications

The Matsushita CF-74ECBAXBM is a powerful and versatile Panasonic Toughbook model that caters to professionals who require durability and reliable performance in challenging environments. This rugged laptop is designed to handle extreme conditions, making it an ideal choice for industries such as law enforcement, military, field service, and emergency response.

One of the standout features of the CF-74ECBAXBM is its rugged construction. The chassis is built to withstand drops, shocks, and vibrations, allowing it to function effectively in demanding conditions. The tough magnesium alloy casing, reinforced with rubber bumpers, provides added protection against accidental impacts. Additionally, the laptop is compliant with military specifications (MIL-STD-810G), ensuring it can endure high temperatures, humidity, and dust.

Equipped with a 14-inch display, the CF-74ECBAXBM boasts an impressive screen with excellent visibility, even in direct sunlight. The high-brightness LED backlit screen provides vibrant colors and sharp images, making it easy for users to work outdoors without straining their eyes. The touchscreen functionality enhances usability, allowing for quick and efficient navigation through applications and documents.

Under the hood, this Toughbook is powered by robust Intel processors, providing the necessary speed and performance for demanding applications. Whether running complex data analysis or high-definition multimedia applications, the CF-74ECBAXBM can handle it all with ease. Coupled with ample RAM and storage options, users can enjoy seamless multitasking and quick file access.

Another key aspect of the CF-74ECBAXBM is its extensive connectivity options. Equipped with multiple USB ports, HDMI, and serial ports, users have the flexibility to connect various peripherals and instruments necessary for their work. The laptop also features robust wireless capabilities, including Wi-Fi and optional 4G LTE, enabling users to stay connected while on the go.

Battery life is a critical feature of any mobile computing device, and the CF-74ECBAXBM does not disappoint. With an extended battery option available, users can enjoy long hours of operation without the need for frequent recharging, making it perfect for fieldwork.

In conclusion, the Matsushita CF-74ECBAXBM is a reliable and rugged laptop engineered for the toughest conditions. Its durable design, powerful performance, and versatile connectivity ensure that professionals in demanding fields can perform their tasks effectively, no matter where they are. With features that prioritize durability and functionality, the CF-74ECBAXBM stands out as an excellent choice for those who need a dependable mobile workstation.
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