AV-N48P74
AV-N56P74
SECTION 4
TROUBLESHOOTING
4.1 SELF CHECK FUNCTIONS
? This model has self-check functions that inform of the failure of the TV by detecting abnormality.
? Operational state is always monitored and the identified is memorized on the record.
4.1.1 HOW TO ENTER THE SELF-CHECK MODE
(1) Set the <SLEEP TIMER 30MIN> with [SLEEP TIMER] key.
(Fig.1)
(2) During the <SLEEP TIMER 30MIN> display, pressSLEEP TIMER
[DISPLAY] key and [VIDEO STATUS] key at the same30MIN
time.
(3) Then <TEST MODE> screen is displayed. (Fig.2)
(4) Press [ 4 ] key then <SELF-CHECK> screen is appear.
(Fig.3)
4.1.2 HOW TO EXIT FROM THE SELF-CHECK MODE
(1) By using the remote control unit, turn the power off. At this
time, the failure record is cleared.
(2) Take off the AC plug from the wall outlet. At this time, theFig.1
failure record is not cleared.
4.1.3 SELF-CHECK DISPLAY
The self-check results are shown on the following display.TEST MODE
Method of indication when the raster is not displayed (Fig.3).1. I2C STOP
2. STATUS DISP.
Each failure is shown by turning POWER LED on and off at
specified intervals.
4. SELF-CHK
ItemPOWER LED ON / OFF intervals5. CONVER OFF
X-ray protectionTurning on and off 0.1-second intervals
B1 over-current Turning on and off 1-second intervalsROM CORRECTION : ACT
protectionROM VERSION :
Fig.2Low B short protection Turning on and off 2-second intervals
4.1.4 EXPLANATION FOR ACTIVATION OF SELF-CHECK
FUNCTIONS
? For X-ray protection, B1 over-current protection and low BITEMRESULT COUNT
short protection, the power of the TV is turned off if NG is
detected.
Immediately after the power is turned off, POWER LED will be
turning on and off.
When the power is turned off, you cannot turn the power onXRAYNG2OCPNG2
again until the AC plug is taken out and put in again.LOBOKTIMOK
? The latest failure is stored on the record at the end.SYNCM:OKS:OKHD:NG
The failure record for each check item is counted to theMEMOKAVSWOK
VCDNG2BSOK
number of 9 at the maximum, When more than 9 failures areAIOOKYCOK
stored on the record, the counter remains stopped at 9.TUNOKGCROK
? SYNC is neither counted nor stored in memory.
? Because of the timing of Vcc start-up and shut-down of the ICPPNG4IPOK
connecting to the I2C bus during which the power is turned on
and off, the operation may be interpreted as an error.
In order to avoid the misinterpretation, the self-check functionsFig.3 SELF-CHECK SCREEN
should be started at about 3 seconds after the power is turned
on.
1-64 (No.52127) |