Matsushita CF-18JHU80TW service manual Power-On Self Test Boot Check

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2 Power-On Self Test (Boot Check)

Outline of POST

The set has a boot check function called POST (Power-On Self Test) in it. The condition of the main body is diagnosed by checking beep sound or error code.

zStart .............Test begins automatically when power switch is set to ON.

zNormal finish .....After memory checking, a beep sound is issued once and the set is placed into automatic stop. Note: If no error occurs, nothing is displayed. (No display of OK, etc.)

Error Diagnosis by Checking Beep Signal Sound

The beep sound is as follows:

(1 (long sound) -2-3-4) (Length of bar shows length of sound.)

= long sound (about 0.4 sec.),

 

= short sound (about 0.2 sec.), Length between sounds is about 0.1 sec.

 

zTable of errors classified by beep sounds

Diagnosis

Beep signal sound

Error message

Main board

1(long sound)-2

BIOS ROM error

 

1-2-2-3

BIOS ROM error

 

1-3-1-1

RAM error

 

1-3-1-3

Keyboard controller error

 

1-3-4-1

RAM error

 

1-3-4-3

RAM error

 

1-4-1-1

RAM error

 

2-1-2-3

BIOS ROM error

 

2-2-3-1

Occurrence of unexpected offering

(Note) A beep sound is also issued in case of other I/O trouble.

2-1

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Contents CF-18 Page Page Page Contents Page Power-On Self Test Boot Check Stuck key 02D0 System cache error Cache disabled Preparation EquipmentSelf Diagnosis Test Outline of Self Diagnostic TestsAutomatic Test Peripheral Test LAN Test Modem Test Wireless LAN TestTest Selection End of test Test classification Screen display test items Contents Error Messages and TroubleshootingCN7 CN3 CN9CN6 CN5KBD HDD FPCRemoving the Rear Cabinet Removing the SpeakerRemoving the DU Lid Unit Removing the Audio PCB Removing Main PCB Removing the Wireless Module Port PCB and Modem PCBRemoving PAD PCB and I/O LED PCB Removing LED PCB and SwitchTS PS2 PCB Removing the LCD HingeLCD HDD LID Assy Removing Each CoverPcmcia LID Assy Exploded View BT1 2 + 0.02N m + 0.2kgf cm 2 + 0.02N m + 0.2kgf cm 12 + 0.01N m + 0.1kgf cm K210 K200-30 K211 K200-30-4 K200-30-35 K200-30-35-1 18 + 0.02N m + 0.2kgf cm Screw tightening torque DL3U4B482AAA PCB, Port RTL DL3UPB237HAA PCB, Bluetooth RTLWireless LAN Module Description QTYDL3UPB281HBA PCB, RF-BT RTL DL3U5B482AAA PCB, TS PS2 RTLDL3UP1282AAA PCB, Antenna RTL DFJS877YA CABLE, AntennaKBD Plate L DFHR3551YA Coin Battery SheetPower SW Knob LCD Hinge CoverDFHR6045ZA DU LID Bottom Case AssyDFHM0277YA DU LID Angle DFHR3441ZA DU LID Waterproof SheetTouch Screen Panel KIT DFHR6051ZE PEN HolderDFHE0805ZA Magnet DFHP7149ZA Magnet TapeDRSB2+5FKL Screw DFHE5058ZB SCREW, DsubDRQT2+D2FKL Screw DXQT3+D4FKNL ScrewMain PCB QTY RTC BatteryEEFCD0D151ER Page Page Page Page EEFCD0D101ER EEFCX0D331REEFCX0D221R EEFUD0J151ER EEFCX0G151R EEFCX0J101RThermistor ConnectorEEFCD0G101ER EEFCD0J470ERFUSE, 2A IC, USB Power ControlDEDRB081L20 Diode FUSE, 5AIC, Flash Memory IC, Gate Logic DA2205IDBLET IC, Bipolar LogicIC, Logic IC, Gate LogicPoly SW DDAZS100MT3T InductorTransistor Transistor ERJ2GEJ681X DETA144EETL TransistorERJ2GEJ151X ERJ2RKF27R4XERJ2RKF54R9X ERJ2RKF39R2XPage ERJ2GEJ103X RESISTOR, 1/16W ERJ2RKF80R6X RESISTOR, 1/16WResistor Array ERJ2RKF1501X ERJ2GEJ222XERJ2GEJ101X ERJ2RKF1002X RESISTOR, 1/16W, 10KΩResistor Array ERJ2GEJ201XERJ2GEJ220X ERJ2GEJ330X ERJ2GEJ102X RESISTOR, 1/16W, 1KΩERJ2GEJ2R2X ERJ2RKF49R9XERJ2GEJ1R0X RESISTOR, 1/16W, 1Ω ERJ2RKF4750XERJ2GEJ104X RESISTOR, 1/16W, 10KΩ ERJ2GEJ203X RESISTOR, 1/16W, 20KΩ ERJ2RKF22R6XDEARA8AJ103M Resistor Array ERJ2GEJ472XEXBV8V750JV Resistor Array ERJ2GEJ471XERJ2GEJ334X ERJ2RHD562XERJ2GEJ225X ERJ2RKF3002X RESISTOR, 1/16W, 30KΩERJ2RHD102X RESISTOR, 1/16W, 1KΩ ERJ2GEJ684XIC, Audio AMP IC, AC97 CodecERJ2GEJ104X ERJ2GEJ103X RESISTOR, 1/16W, 10KΩERJ2GEJ273X RESISTOR, 1/16W, 27KΩ ERJ2GEJ683X RESISTOR, 1/16W, 68KΩB1GKCFJN0004 Transistor Connector DFJS830YAERJ2RKF75R0X IC, Flat PAD ControllerDDB5Z031J-L Inductor LEDERJ6GEYJ101V ERJ2GEJ303X RESISTOR, 1/16W, 30KΩERJ2GEJ103X RESISTOR, 1/16W, 1KΩ