Matsushita CF-74ECBAXBM manual Troubleshooting

Page 13

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.

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Contents CF-74ECBAXBM Page Laser Safety Information Page Page Contents Jack, 3.5 DIA, Impedance 32 Ω, Output Power 4 mW × Bluetooth*12 Version 2.0+EDRModel No High-Speed CD-RW 4X/10XOnly for model with wireless LAN Maximum resolution depends on the specificationsOnly for model with Bluetooth Operation has been tested and confirmed using PanasonicNames and Functions of Parts Right side Block Diagram Page Troubleshooting Table of errors classified by beep sounds Error Diagnosis by Checking Beep Signal SoundDiagnosis Beep signal sound Error message Outline of PostStuck key 02D0 System cache error Cache disabled Self Diagnosis Test Operation of PC-Diagnostic Utility Content of the setup is returned to the setting of the user PC-Diagnostic utility End methodSelection of tested device Record area frequently accessed All record area is tested Content of standard test Content of enhancing testTest item Stanard Ty of breakdownExpress Card Connector Content of Standard Test Content of Extend TestWiring between Super I/O Test ItemWiring Connection Diagram Preparation Battery PackRemoving the HDD HDD UnitRemoving the Keyboard Removing the Dimm Memory CardRemoving the Speaker and the LED PCB Removing the Main PCB Removing the Bottom CaseRemoving the FAN Motor and SD PCB Removing the PC Card Ejector and Lithium BatteryRemoving the DC-IN PCB and I/O Removing the Display unit Removing the USB PCBRemoving the LCD Front Cabinet Removing the LCD and the InverterRemoving the Finger PCB Removing the Touch PAD and PAD PCBPreparation Setting the LCD Unit Inverter Setting the Finger PCBPreparing and setting the Finger Sensor Base Attaching the LCD Damper C and LCD Damper D Arranging the W-LAN L and R CableAttaching the Cloth Arranging the LCD/TS CableSetting the Inverter and Arranging the Inverter Cable Arranging the TP Power Cable and Attaching the TP/LCD SheetLCD Rear Cabinet Setting the Display unit Setting the LCD Front CabinetFixing of the LCD Front Cabinet Ensure all the 23 Hooks are securely setSafety Working MP Slide Sheet Setting the USB PCBArranging the USB Cable USB Cable TapeApplying Grease on the Heat Sink Setting the SD PCB, Heat Sink and FAN MotorFan Dust Sheet Pipe SheetArranging the DC-IN Cable Setting the DC-IN PCB and I/O PCBFAN Cable Sheet DC-IN Cable ~3mm INV. CableSetting the Main PCB Setting the PC Card Ejector and Lithium BatteryArranging the Lithium Battery Safety Working Lithium BatteryFAN Cable Connector CN28 No.1 LAN Cable No.8 TP Power CableArranging the FAN Cable FAN Motor Main PCB TapeArranging the Modem Cable Setting the Wireless Module and MDC ModuleGood example Bad exampleSetting the Handle Assy Setting the Bottom CaseSoldering the Speaker Cable and Setting the Speaker Rubber Setting the Speaker and the LED PCBSpeaker Red LineCenter Cover Hooks KBD Angle L Keyboard KBD Angle R Setting the KeyboardSetting the HDD Setting the Dimm Memory Card and Dimm CoverSet the DVD-ROM Driver Unit Set the HDD Pack Exploded View 10-2 10-3 10-4 Replacement Parts List Comparison Table

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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