45
PDM-4220
PDM-4220
FAULT SYMPTOM
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 Chapter
4.6.1
2
Entire screen
does not
light.
Screen lights dimly even on the
back screen.
LOGIC Replace LOGIC
board
3
Single vertical line (of different
color)
Panel chassis
LOGIC
Refer to Chapter
4.6.2
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
ABUSL
ABUSR
LOGIC
Above boards
are connected
.
Refer to Chapter
4.6.2
6
Vertical bar
Bar width of 3/7 or 4/7 of the
screen width, is displayed.
Abnormal display. (Vertical line of
different color)
ABUSL
ABUSR
LOGIC
Above boards
are connected.
Refer to Chapter
4.6.2
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
Replace panel
chassis
8
Horizontal
line
Every other line(No light)
Entire screen
X-SUS
Y-SUS
ABUSL
ABUSR
Replace
X-SUS
Y-SUS
Board
Summary of Contents for PDM-4220
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