Sharp LC-20B4U-B, Service Manual

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36
LC-20B4U-S
LC-20B4U-B
Specifications of Sound Only Mode Function
1
"
OFF
"
is should be added during operation of remote control BRIGHT button.
BRIGHTNESS [Bright]
⇒
BRIGHTNESS [Normal]
⇒
BRIGHTNESS [Dark]
⇒
BRIGHTNESS [OFF]
⇒
BRIGHTNESS [Bright]
2
When
"
OFF
"
mode is selected, the screen is muted, the following message appears and time is counted.
(Sound only mode entry process)
At this time, the display of time
"
After 5 seconds
"
in the message changes every second as the time is counted.
After 5 seconds
⇒
After 4 seconds
⇒
After 3 seconds
⇒
After 2 seconds
⇒
After 1 second
When 5 seconds elapse, the backlight abnormality detecting function becomes effective to turn OFF the
backlight and reset the message. (Sound only mode process)
In temporary recovery, time is not counted but the following message appears. (When 5 seconds elapse, the
backlight abnormality detecting function becomes effective to turn OFF the backlight and reset the message,
which is same as above.)
3
As for the operations which will be performed by acceptance of keys in change-to-sound only process and
sound only process.
Screen Mute
Screen Mute
BRIGHTNESS[OFF] TURNS OFF IN 5 SECS
BRIGHTNESS[OFF] PRESS BRIGHT TO CANCEL
Refer to the
"
Table of Key Allocation in Sound Only Mode
"
and
"
Table of Key Operations in Sound Only Mode
"
.
4
Display of cautions in backlight-OFF
∫
"
Display of Remaining Time in OFF-timer
"
are recovered temporarily, cautions are displayed and when the
display ends or 3 seconds elapse, operation changes again to sound only mode entry process.
At this time, screen mute is not reset.
5
When turning OFF the power by the power key, SLEEP TIMER, AUTO POWER OFF, end the sound only
mode, change the brightness to BRIGHT [Bright], and then turn OFF the power.
6
In the case of power-ON and BRIGHT [OFF], the brightness changes to BRIGHT [Bright] and operation
starts.
7
When the brightness is set to BRIGHT [OFF] during mute, mute is continued during change-to-sound only
process (while cautions are displayed), and when the sound only mode is entered, mute is reset (as soon as
the backlight is turned OFF). The sound volume after mute resetting should be same as the level which has
been set before mute setting.
8
When operating V-CHIP block, operation is recovered temporarily and display of cautions is continued until the
block is reset. However, the screen should be in black and mute but not in blue.
9
Ignore CLOSED CAPTION. (Including temporary recovery)