Panasonic PT52LCX66 Service Manual - Page 29

How To Determine Which P.c.b. Is Defective - tv no picture

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PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16 HOW TO DETERMINE WHICH P.C.B. IS DEFECTIVE No picture or abnormal picture ABNORMAL PICTURE: No Picture Color (Black and White picture) Abnormal Picture Color Unsynchronized Picture Dark Picture (Only Video1 OR 2 input is NG.) Replace the TV Unit (Base P.C.B.). (Only Video3 input is NG.) Replace the TV Unit (Front Jack/ Operation P.C.B. or Base P.C.B.). (Only tuner Analog CH input is NG.) Replace the Digital Tuner P.C.B. or the TV Unit (Base P.C.B.). (Only PC input is NG.) Replace the TV Unit (Main P.C.B.). (Only Component 1 OR 2 input is NG.) Replace the TV Unit (Base P.C.B.). (Analog Tuner, Component AND Video input are NG.) Replace the TV Unit (Base P.C.B.). In the case that one or some inputs are NG, it can be judged that the Optical Block Unit is OK. (Digital Tuner/SD Card input is NG.) (Only HDMI is NG.) Replace the Digital Tuner P.C.B. or TV Unit (Main P.C.B. ). Replace the TV Unit (Main P.C.B. ). (All inputs are NG.) Replace the Digital Tuner P.C.B., or TV Unit (Main P.C.B.) or Projection Unit (LCD Drive P.C.B.) 29

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No picture or abnormal picture
(Only Video1 OR 2 input is NG.)
(Analog Tuner, Component AND Video input are NG.)
Replace the TV Unit (Base P.C.B.).
Replace the TV Unit (Base P.C.B.).
Replace the TV Unit (Base P.C.B.).
(Only tuner Analog CH input is NG.)
Replace the Digital Tuner P.C.B.
or the TV Unit (Base P.C.B.).
In the case that one
or some inputs are NG,
it can be judged that the
Optical Block Unit is OK.
(Only Component 1 OR 2 input is NG.)
(Only Video3 input is NG.)
Replace the TV Unit (Front Jack/
Operation P.C.B. or Base P.C.B.).
(Only PC input is NG.)
Replace the TV Unit (Main P.C.B.).
(Digital Tuner/SD Card input is NG.)
(All inputs are NG.)
Replace the Digital Tuner P.C.B.
or TV Unit (Main P.C.B. ).
ABNORMAL PICTURE:
No Picture Color (Black and White picture)
Abnormal Picture Color
Unsynchronized Picture
Dark Picture
HOW TO DETERMINE WHICH P.C.B. IS DEFECTIVE
(Only HDMI is NG.)
Replace the TV Unit (Main P.C.B. ).
Replace the Digital Tuner P.C.B.,
or TV Unit (Main P.C.B.)
or Projection Unit (LCD Drive P.C.B.)
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
29