Panasonic PT52LCX66 - MULTI MEDIA DISPLAY Service Manual page 31

Tips for determining defective circuit in the case of picture problem
PROJECTION UNIT
BASE P.C.B.
IC3101
COMPONENT IN (1,2)
VIDEO IN (1,2)
S-VIDEO IN (1,2)
VIDEO
SW
FRONT JACK
/OPERATION P.C.B.
CN3901 CN3102
VIDEO IN 3
S-VIDEO IN 3
DIGITAL TUNER P.C.B.
TUNER
IC8211, IC8240, ETC
DTV SIGNAL PROCESS
/SD CARD
SIGNAL PROCESS
CARD P.C.B.
P9005 P9003 DT10
SD
CARD
Main menu
1) Input the signal and display it.
[Input picture is not displayed normally.]
2) Press MENU key to display the Main menu.
3) Press OK key to select Picture adjust menu.
4) If the Picture adjust menu is displayed normally, the circuit shown in gray is judged OK.
If the Picture adjust menu is not displayed normally, something is wrong with the circuit shown in gray.
(Most possibly: Projection Unit)
MAIN P.C.B.
IC5000 IC5001
PC-IN
VIDEO
SIGNAL
PROCESS
CN3103 CN3000
DIGITAL
VIDEO
SIGNAL
HDMI-IN(1, 2)
PROCESS
DT12 CN6003
Picture adjust menu
Main menu
Picture adjust menu
31
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
PROJECTION UNIT
LCD DRIVE P.C.B.
IC5700 IC2504 IC2503
CN5700 CN2502
LVDS LVDS
TRANS. REC.
COLOR
CORRECTION
Circuit shown in gray
IC6001
MAIN MICRO-
CONTROLLER
IC2003,2004
CN2001
S/H LCD (R)
IC2002,2005
CN2002
S/H LCD (G)
IC2001,2006
CN2003
S/H LCD (B)