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Service Modes, Error Codes, and Fault Finding
EN 24 FHP PDP5.
Figure 5-15 Fault symptom overview (1/2)
NO Fault
contents
Fault status Suspected
fault location
Analysis procedure
and measure
1 After momentarily going on, the
screen becomes black
immediately or after a few
seconds (main power is turned
off.)
X-SUS
Y-SUS
PSU
Panel chassis
LOGIC
ABUSL
ABUSR
Refer to
“Entire screen
does not light”
2
Entire screen
does not
light.
Screen lights dimly even on the
back screen.
LOGIC Replace the LOGIC
board, following the
“Logic Board
Exchange” procedure
3 Single vertical line (of different
color)
Panel chassis
LOGIC
Refer to
“Vertical line/bar”
4
Vertical line
Vertical line from the middle of
effective scan area (vertical line
of different color)
Panel chassis Replace panel
chassis
5 Bar width of 1/7 of horizontal size
or in multiples of 1/7, is displayed.
Abnormal display
Panel chassis
ABUS-L
ABUS-R
LOGIC
Above boards
are connected
.
6
Vertical bar
Bar width of 3/7 or 4/7 of the
screen width, is displayed.
Abnormal display (vertical line of
different color)
ABUS-L
ABUS-R
LOGIC
Above boards
are connected.
7 Single horizontal line (no light) or
single horizontal line does not
light among the effective scanning
area.
Single horizontal line does not
light.
Panel chassis
X-SUS
Y-SUS
ABUS-L
ABUS-R
Replace panel
chassis
8
Horizontal
line
Every other line (no light) in entire
screen
X-SUS
Y-SUS
ABUS-L
ABUS-R
Replace
X-SUS, Y-SUS
Refer to
“Vertical line/bar”
G_16400_023.eps
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