Panasonic service repair handbook Manuales De Servicio

trouble shooting

Defect phenomenon and parts

trouble shooting

Defect phenomenon and parts

case ( 2 )

( summarize chart )

case ( 2 )

( how to detect problem by test pattern )

model

1. When phenomenon has no image ( no show on screen either ), " whole white

phenomenon

pattern " indicate and diagnostic the problem also find to close problem PCB.

thin

Plasma Panel

Vertical line

thick

D. C ( Plasma Panel )

[ Method ]

equal space

D. DG

a. Turn off the main power SW.

as noise

D, SC, SD

b. PX600/PX60 series : disconnect DG5 connector of DG PCB.

upper

SU,D, SC ( Plasma Panel )

c. After that, turn on the main power SW, it will show white pattern.

Horizontal

lower

SU,D, SC ( Plasma Panel )

line

middle/ lower

all

[ diagnostic point ]

Color

one color

D, DG

1. white pattern show on screen : Tuner circuit or DG PCB problem.

purity

D, DG

2. white pattern does not show : Plasma panel or D PCB problem

V synchro

D, DG

( it may happened on SC PCB )

H synchro

D, DG

Synchro

V synchro shift

D, DG

V Amp small

D, DG

see duplication

D, DG

upper

SU, D ( Plasma Panel )

Screen

lower

SD, D ( Plasma Panel )

half

Left

damage

Right

discharge

radiation problem

SC, D ( Plasma Panel )

1. when receive service request for screen image, utilize above chart,

trouble shooting guide or defect picture explanation following pages.

2. These chart or explanation of cause of problem is just possibility case.

Tuner circuit block

Panel circuit block

and major demand . However other cause of problem will be found

in rare case.

also utilize service mode function which has test pattern program in order to

3. To refer " diagnostic point " for understand to which area or PCB

detect problem easily.

has problem or not.

Panel

BA PCB

Digital
control

H PCB
U/V in
ext in

DG PCB

input Sw
video signal
OSD mix
HDMI input

D PCB

sub field

discharge

TEST
pattern

SC, SS

scan

C PCB

data

driver

PX50
Series

PX500
Series

37/42
PX60

50
PX60

37/42
PX600

50
PX600

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