Panasonic PT52LCX66 - MULTI MEDIA DISPLAY Service Manual page 29

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