Fault Symptom - Sony FPF55C17196UA Service Manual

4.5 FAULT SYMPTOM

NO Fault
contents
1 Entire screen After momentarily going on, the
does not light. screen becomes black
immediately or after a few
seconds. (Main power is turned
off.)
2 Screen lights dimly even on the
back screen.
3 Vertical line Single vertical line (of different
color
screen
4 Single vertical line (of different
color
center of screen
5 Single full vertical line (of different
color
6 Vertical bar Bar width of 1/33 of horizontal
size or abnormal display in
multiples of 1/33.
7 Abnormal display at bar width of
1/11
multiples of 1/11
.
8 Abnormal display at bar width of
1/11 of horizontal size (Vertical
bar of different color)
9 Abnormal display at bar width of
2/11 of horizontal size (Vertical
bar of different color)
10 Abnormal display at bar width of
2/11 of horizontal size (Vertical
bar of different color)
11 Abnormal display at upper side
or lower side of horizontal size
(Vertical bar of different color)
Fault status
)
start point at center of
)
start point exclude at
)
of horizontal size or
-22-
Suspected Analysis
fault location procedure
and
measure
X-SUS,Y-SUS Refer to
PSU, Panel Chapter
chassis, Logic 4.6.1
ABUSL or R
Logic Replace
Logic
board
Panel chassis Refer to
Logic, ABUS, Chapter
ADM 4.6.2
Panel chassis Replace
Panel
chassis
Logic Replace
Logic
board
Refer to
Panel chassis
Chapter
(ADM)
4.6.2
Panel chassis
ABUS
Connection of
above boards.
Refer to
Connection of
Chapter
ADM,
4.6.2
ABUS
Connection of
ABUS
Connection of
ABUS
Connection of
ABUS and
Logic or
X-SUS and
ABUS