When
the input
button on the
remote or the receiver
is pressed, Is the on
screen display
normal?
NO
YES
Using the
power distribution
diagram, are the
voltages normal at
CN90?
NO
Suspect the
Low B PCB.
YES
Suspect the
Seine (Digital)
PCB.
Using
the power
distribution diagram,
are the voltages normal
at P811A and
P811B?
Suspect
The tuning AV PCB.
This can be confirmed by
using the wiring
interconnect diagram
and checking the
Y, Pb, Pr signals at
plug CN71A. They
will be Missing or
distorted.
YES
Suspect the
Low B PCB.
NO
No or distorted
video
Does
the back light function
normally when the unit
is turned on?
YES
NO
Use the
backlight
troubleshooting
flowchart on
next page.
Does
the screen display
streaks, negative
picture, lines, or
dark areas?
NO
Suspect the
Charis module,
or the LCD
display panel.
***
YES
Examples of
Defective
Display Panel
Typical Charis problems:
Image only on part of
screen
Black Image
Dotted vertical lines
*** Warranty Concession
required for LCD panel
replacement. Digital
photo may be requested.
Contact Technical
Support.
11
