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KDP-51WS550/57WS550/65WS550
Self-Diagnosis Function Operation
+B overcurrent (OCP)
Occurs when excessive current flows through R6812. The increase in voltage across Q6803 causes it to turn on which sends a high signal to the
micro.
+B overvoltage (OVP)
IC6801 dB OVP condition and turns on Q6802. This sends a high signal to the micro and also shuts down the AC relay.
V-STOP
Occurs when an absence of the vertical deflection pulse is detected by pin 56 of IC0401 (MA Board). Power supply will shut down when waveform
interval exceeds 2 seconds.
White Balance Failure
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC0401. TV will stay on, but there will be
no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
Low B OCP/OVP
Occurs when set 5V is out.
Horizontal Deflection Stopped
Occurs when either:
1) a +B overcurrent is detected (Q6803), or
2) IC0401 (MA Board) is damaged.
Self-Diagnosis Block Diagram
3
1
2
R5104
R5105
R5125
Q5018
RY600
Q6102
Q6105
Q6108
D6122
D6803
D6505
D6121
R6812
D6805
R6803
IC6801
Q6802
1K-PROT2
+B OCP
+BVOP
5V
+B OCP
2
1
3
4
IC5007
VDY-
CRT
IC0401
Y/C JUNGLE
SCL
SDA
AKB
VPROT
HPROT
IC0001
MAIN MICRO
MA
CLKO
DATO
AC RLY
LOW B ERR
OVP
OCP
STR
STBY-LED
STBY-LED
P_SW(-)
IC6201
5V
+B
+B
+B
BM
MA
D
D
A
2
14
57
56
58
53
52
28
31
69
43
44
45
48
O
I
O
Содержание KDP-51WS550 - 51" High Definition Projection Tv
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Страница 29: ... 29 KDP 51WS550 57WS550 65WS550 2 11 1 ID MAP TABLE ...
Страница 44: ... 44 KDP 51WS550 57WS550 65WS550 5 3 BLOCK DIAGRAMS VIDEO SIGNAL FLOW BLOCK DIAGRAM ...
Страница 98: ... 98 KDP 51WS550 57WS550 65WS550 5 5 SEMICONDUCTORS ...
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