Matsushita CF-30CTQAZBM service 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

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

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.

AC

NG

 

Adaptor/Battery

 

Replace AC Adaptor/Battery

Output voltage

 

 

OK

Dark display on screen. Screen fails to display.

Power lamp

NO

check

YES

 

Inverter board

NG

 

 

OK

LCD back

NO

 

light lighting

 

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.

Failure in starting

YES

NG

LCD unit

 

 

 

check

OK

 

 

 

BIOS operation

NO

 

check

YES

 

Result of

 

NG

 

 

POST

OK

 

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.

CD CALL not practicable.

Starts but operates unstably.

TroubleNO symptoms on some

of CD

YES

Replace main board.

Reinstall HDD.

Replace main board.

STARTEND

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

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Contents
Model No. CF-30CTQAZBM For U.K This apparatus must be earthed for your safety How to replace the fuseLaser Safety Information Page Page Contents Model No SpecificationsOnly for model with wireless LAN Age*20, Recover ProTM 6*20Only for model with Bluetooth You need to install to use the feature Names and Functions of Part E F G Diagram Diagnosis Procedure Troubleshooting Beep signal sound Error message Error Diagnosis by Checking Beep Signal SoundOutline of Post Stuck key 02F0 CPU ID 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 Pack Removing the Battery Pack and HDDBoard Removing the GPS PCB and Blue- tooth PCB Removing the KB Cable Cover and LCD Cable CoverRemoving the USB PCB and Antenna Removing the Dimm Cover and Bot- tom CoverRemoving the PAD PCB Removing the FPC HDD BATRemoving the Main PCB MP PCB PCB Remove the 4 Screws. N14Removing the Handle and Power SW Hinge L and R Removing the Display Unit Removing the LCD Rear CabinetRemoving the Antenna PCB L and R Removing the Inverter PCB, TS PCB and LCD UnitScrews N2 DRHM5054XA Arranging the Antenna L and R Cables Setting the Antenna PCB L and RPreparation of Inverter Setting the Inverter PCB, TS PCB and LCD UnitAssembly of LCD Unit Setting the LCD Rear Cabinet, Hinge L and RSetting the Handle and Power SW Setting the Display UnitFix the SW LED PCB using the Screw. N5 Attach the Power LED Packing Sheet to the LED SpacerFix the Palm Top Cover using the 5 Screws. N4 No1 to Set the SW LED PCBAssembly of Palm Top Cover Assembly of Power SWSetting the I/O PCB Setting the SD PCB, Express Card Connect the 2 Cables to the 2 Connectors. CN17,CN27 Setting the Main PCBFix the Screw. N7 Attach the TOP Screws Assembly of Main PCB Assembly of LAN, Modem and MDCAssembly of PAD PCB Setting the PAD PCBPreparation of HDD FPC Assy Setting the FPC HDD BATDirection C View Tighten Setting the USB PCB and Antenna PCB Assembly of USB PCB and Antenna PCB Setting the Dimm Cover and Bottom Cover Preparation of Dimm Cover Screws N11 DFHE5025XA Screws N12 DXQT2+F3FNL Setting the GPS PCB and Bluetooth PCBArranging the Keyboard Setting the KB Cable Cover, Keyboard and LCD Cable CoverScrews N2 DRHM5054XA Screws N5 DRQT26+D4FKL Setting the HDDHDD FPC Ass’y Preparation oh HDD AssyPush and bend HDD Thermal Plate SEC Page Set the HDD Pack Set the Battery Pack Setting the Battery Pack and HDD Pack18 + 0.22 N.m + 0.2 kgf.cm 2 + 0.02 N.m 10-1 Xploded View10-2 CF-30CTQAZBM216 + 0.0196 N.m 19 + 0.02 N.m314 + 0.0196 N.m 441 + 0.049 N.m10-4 10-5 45 + 0.50 N.m10-6 10-7 Replacement Parts List Comparison Table
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