Panasonic PT52LCX66 Service Manual - Page 31

Tips for determining defective circuit in the case of picture problem - problems

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

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Tips for determining defective circuit in the case of picture problem
PROJECTION UNIT
PROJECTION UNIT
IC5000
VIDEO
SIGNAL
PROCESS
IC5700
IC6001
LVDS
TRANS.
MAIN MICRO-
CONTROLLER
IC2504
LVDS
REC.
IC2003,2004
S/H
LCD (R)
LCD (G)
LCD (B)
IC2002,2005
S/H
IC2001,2006
S/H
IC2503
COLOR
CORRECTION
IC5001
DIGITAL
VIDEO
SIGNAL
PROCESS
BASE P.C.B.
DIGITAL TUNER P.C.B.
CARD P.C.B.
FRONT JACK
/OPERATION P.C.B.
IC3101
VIDEO
SW
IC8211, IC8240, ETC
DTV SIGNAL PROCESS
/SD CARD
SIGNAL PROCESS
SD
CARD
CN3103
CN2001
CN2002
CN2003
DT12
DT10
P9005
P9003
CN6003
CN3000
CN3102
CN2502
CN5700
CN3901
TUNER
MAIN P.C.B.
LCD DRIVE P.C.B.
PC-IN
HDMI-IN(1, 2)
COMPONENT IN (1,2)
VIDEO IN (1,2)
S-VIDEO IN (1,2)
VIDEO IN 3
S-VIDEO IN 3
Picture adjust menu
Circuit shown in gray
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 menu
Picture adjust menu
PT-52LCX66 / PT-56LCX66 / PT-61LCX66 / PT-52LCX16 / PT-56LCX16
31