Sony KP-46WT510 - 46" 16:9 Hi-scan Projection Television, Service Manual

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KP-46WT510
SELF-DIAGNOSTIC FUNCTION
The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number
of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the
instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the Remote Commander can be used to review
the failure occurrence data stored in memory to reveal past problems and how often these problems occur.
Diagnostic Test Indicators
When an error occurs, the STANDBY/TIMER LED will fl ash a set number of times to indicate the possible cause of the problem. If there is more than
one error, the LED will identify the fi rst of the problem areas.
Results for all of the following diagnostic items are displayed on screen. If the screen displays a “0”, no error has occurred.
Diagnostic Item
No. of times
STAND BY /
TIMER
lamp flashes
Probable Cause Location Detected Symptoms
Power does not turn on Does not light
•
Power cord is not plugged in.
•
Fuse is burned out (F6001). (G Board)
•
Power does not come on.
•
No power is supplied to the TV.
•
AC Power supply is faulty.
+B overcurrent (OCP)* 2 times
•
H.OUT (Q8024) is shorted. (D Board)
•
+B PWM (Q8035, Q8038) is shorted.
(D Board)
•
Power does not come on.
•
Load on power line shorted.
+B overvoltage (OVP) 3 times
•
IC501 is faulty. (G Board)
•
IC5002 is faulty. (G Board)
•
Has entered standby mode.
Vertical deflection stopped 4 times
•
±
15V is not supplied. (D Board)
•
IC8003 is faulty. (A Board)
•
Has entered standby state after
horizontal raster.
•
Vertical deflection pulse is
stopped.
•
Power line is shorted, or
power supply is stopped.
White Balance Failure
(Not Balanced) 5 times
•
Video OUT (IC7101, IC7201, IC7301)
is faulty. (CR, CG, CB Board
s
)
•
CRT drive (IC309) is faulty. (A Board)
•
Screen (G2) is improperly adjusted. **
•
No raster is generated.
•
CRT Cathode current detection
reference pulse output is small.
Low B OCP/OVP
(Overcurrent/Overvoltage) *** 6 times
•
+5 line is overloaded. (A, B Boards)
•
+5 line is shorted. (A, B Boards)
•
No picture
Horizontal deflection stopped 7 times
•
Q8035, Q8038 is shorted. (D Board)
High-voltage error 8 times
•
T8005 is faulty. (D Board)
Audio error 9 times
• ±
19V line is shorted. (A, B Boards)
•
IC708 is faulty. (A Board)
•
PS701 or PS702 is opened.
(A Board)
•
No sound
* If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously. The symptom that is diagnosed
first by the microcontroller is displayed on the screen.
** Refer to Screen (G2) Adjustments in Section 2-
2
of this manual
*** If TIMER or STAND BY indicator blinks six (6) times, unplug the unit and wait 10 minutes before performing the adjustment.
Self Diagnosis
Supported model