Panasonic TH-80BF1U Operating Instruction page 99

Symptoms
The RS-232C is uncontrollable *
The LAN is uncontrollable *
There is no picture displayed or sound output from
the DIGITAL LINK terminal. *
Sending e-mail fails. *
Power indicator is blinking in orange.
This LCD Display uses special image processing. Hence a slight time lag may occur between image and audio, depending on the
type of input signal. However, this is not a malfunction.
* For the network, DIGITAL LINK and E-mail setup, please refer to the
LCD Display panel
Symptoms
The screen darkens slightly
when bright pictures with
minimal movements are
shown.
It takes a while for the picture
to appear.
The edges of the images
flicker.
There may be red spots, blue
spots, green spots and black
spots on the screen.
Image retention appears
Check whether the connection has been made properly. (see page 23)
To control with SERIAL terminal of the display, check that "Network control"
is "Off", and "DIGITAL LINK mode" is set to the item other than "DIGITAL
LINK(RS-232C)".
To control with RS-232C terminal of the DIGITAL LINK device, check that "Network
control" is "On", and "DIGITAL LINK mode" is "DIGITAL LINK(RS-232C)".
Check whether the connection has been made properly.
Check whether "Network control" is "On" when controlling with the WEB
browser control or the command control.
Check whether "LAN Setup" has been configured properly.
When connecting to a device of AMX, Crestron Electronics, Inc., or Extron, set
"AMX D.D.", "Crestron Connected™", or "Extron XTP" according to the device
to use.
See the "Signal quality" information of "DIGITAL LINK status" to check the LAN
cable status such as whether the LAN cable is disconnected or the cable is
not shielded.
Check whether the connection has been made properly between the video
(output) equipment and twisted pair cable transmitter and between the twisted
pair cable transmitter and this product.
Check that "DIGITAL LINK mode" is not set to "LAN".
Check whether the e-mail setting of Web browser is correct.
There is possibility of malfunction. Please contact an Authorized Service
Center.
The screen will darken slightly when photos, still images of a computer or other pictures with
minimal movements are shown for an extended period. This is done to reduce image retention
on the screen and the shortening of the screen's service life: It is normal and not indicative of
malfunctioning.
The unit digitally processes the various signals in order to reproduce esthetically pleasing images.
As such, it sometimes takes a few moments for the picture to appear when the power has been
turned on, when the input has been switched.
Due to the characteristics of the system used to drive the panel, the edges may appear to flicker in
the fast-moving parts of the images: This is normal and not indicative of malfunctioning.
This is a characteristic of liquid crystal panels and is not a problem. The liquid crystal panel is built
with very high precision technology giving you fine picture details. Occasionally, a few non-active
pixels may appear on the screen as fixed points of red, blue, green, or black. Please note this does
not affect the performance of your LCD.
Image retention may occur. If you display a still picture for an extended period, the image
might remain on the screen. However, it will disappear after a while. This is not considered as
malfunction.
Checks
" "
Network Operations of the Operating Instructions.
Check
Troubleshooting
97