Yamaha PDM-4210 Service Manual page 42

PDM-4210
12.3 Fault Symptom
NO Fault
contents
1 Entire screen
does not
light.
2
3 Vertical line
4
5 Vertical bar
6
7 Horizontal
line
8
42
Fault status
After momentarily going on, the
screen becomes black
immediately or after a few
seconds. (Main power is turned
off.)
Screen lights dimly even on the
back screen.
Single vertical line (of different
color)
Vertical line from the middle of
effective scan area (Vertical line
of different color)
Bar width of 1/7 of horizontal size
or in multiples of 1/7, is displayed.
Abnormal display.
Bar width of 3/7 or 4/7 of the
screen width, is displayed.
Abnormal display. (Vertical line of
different color)
Single horizontal line (No light) or
single horizontal line does not
light among the effective scanning
area.
Single horizontal line does not
light.
Every other line(No light)
Entire screen
Suspected
fault location
X-SUS
Y-SUS
PSU
Panel chassis
LOGIC
ABUSL
ABUSR
LOGIC
Panel chassis
LOGIC
Panel chassis
Panel chassis
ABUSL
ABUSR
LOGIC
Above boards
are connected
.
ABUSL
ABUSR
LOGIC
Above boards
are connected.
Panel chassis
X-SUS
Y-SUS