Philips FPF42C128135UA-52 Service Manual page 25

Service Modes, Error Codes, and Fault Finding
NO Fault contents
9 Horizontal bar Bar width of 1/8 or multiples of
1/8 of the screen height, is
displayed.
Abnormal (screen does not
light)
10 Bar width of 1/2 of the screen
height.
Abnormal display
(screen does not light)
11 Image sticking Fixed display contents are
(Image
always displayed.
retention)
12 Twinkle The entire screen momentarily
becomes brighter or darker.
13 Flicker The entire screen flickers
continuously.
14 Luminance is Screen is too dark or too bright.
abnormal (Out of specifications)
15 Chrominance Colors cannot be displayed
is abnormal correctly.
16 Sync is
disturbed
17 Picture
distorted
18 Steps of Luminance linearity is poor.
gradation are
skipped
19 Abnormal
sound
20 Control on Contrast, color temperature
adjustment and ϒ cannot be
external
communication changed.
is abnormal
Fault status
Figure 5-16 Fault symptom overview (2/2)
FHP PDP
Suspected Analysis procedure
fault and measure
location
Panel chassis Replace panel
chassis
Panel chassis Refer to
Y-SUS "Horizontal bar"
X-SUS
Above boards
are connected.
Panel chassis Perform all white heat
run. After judgement,
replace panel chassis
Poor connector
contact
Poor connector Connector / cable
contact re-connection or
(CN2,3,21,31) cable exchange
Replace Logic
LOGIC board
board, following the
"Logic Board
Exchange" procedure
PSU Locate cause of
X-SUS abnormality from
listening and viewing.
Y-SUS
(Core is broken, Replace the cause of
or transformer problem.
is abnormal.)
LOGIC board Replace Logic
board, following the
"Logic Board
Exchange" procedure
G_16400_024.eps
5. EN 25
190706