When an error occurs, the STANDBY/TIMER LED will flash a set of number of times to indicate the possible cause of the problem. If there is more than one error, the LED will identify the first of the problem areas
Result for all of the following diagnostic items are displayed on screen. If the screen displays a [0], an error has occur ed.
* If a +B overcurrent is detected, stoppage of vertical deflection is detected simultaneously. The symptom that diagnosed first by the micro-controller is displayed on the screen.
** If the Standby/Stereo LED flashes [6] times, unplug the unit from AC mains wall socket, and wait 15 seconds before performing the adjustment.
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Result for all of the following diagnostic items are displayed on screen. If the screen displays a [0], an error has occur ed.
* If a +B overcurrent is detected, stoppage of vertical deflection is detected simultaneously. The symptom that diagnosed first by the micro-controller is displayed on the screen.
** If the Standby/Stereo LED flashes [6] times, unplug the unit from AC mains wall socket, and wait 15 seconds before performing the adjustment.
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Diagnostic item
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No. of time Standby/timer lamp flashes.
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Display results
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Probable cause location
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Detected symptoms
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Power does not turn ON.
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Does not light
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===========
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# Power cord is not plugged in. # Fuse is burned(F501). [AZ-Board].
|
# Power does not come ON.
# No power is supplied to the TV.
# AC Power supply is faulty.
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+B over current (OCP)
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2 times
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2:0 or 2:1
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# H.Out(Q5030) is shorted [DZ-Board]. # +B PWM(Q5003) is shorted[DZ-Board].
|
# Power does not come ON.
# Load on power line is shorted.
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Low +B over voltage(OVP)
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3 times
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3:0 or 3:1
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IC6505 is faulty [DZ-Board]
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Has entered standby mode.
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Vertical deflection stopped
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4 times
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4:0 or 4:1
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# 15V is not supplied [DZ-Board]. # IC5004 is faulty [DZ-board]
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# Has entered standby mode after Horizontal Raster. # Vertical deflection pulse is
stopped. # Power line is shorted or
power supply is stopped.
|
White balance failure
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5 times
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5:0 or 5:1
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# Video out (IC9001 – IC9003) is faulty [CX-Board]. # CRT Drive (IC2801) is faulty
[BY-Board]. # G2 is improperly adjusted.
|
# No raster is generated.
# CRT Cathode Current detection reference pulse output is small.
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LOW+B OCP/OVP (over current / over voltage)
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6 times
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6:0 or 6:1
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# +5V line is overloaded (AZ,BY,MZ – Boards). # +5V line is shorted (AZ,BY,MZ _
Boards). # IC504 is faulty
(AZ-Board).
|
No picture
|
Horizontal deflection stopped.
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7 times
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7:0 or 7:1
|
========== Through checkup should be done with all boards.
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No picture
|
