Sharp CX48K4 Service Manual page 10

FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
NO. Adjustment part Adjusting procedure and conditions
1 CONTRAST 1. Receive "Monoscope Pattern" signal.
key 2. Set P-Mode to select CONTRAST.
3. Press Volume Up/Down key to check whether
the CONTRAST effect is OK or not.
2 COLOUR key 1. Receive "Colour Bar" signal.
2. Set P-Mode to select COLOUR.
3. Press Volume Up/Down key to check whether
the COLOUR effect is OK or not.
3 BRIGHTNESS 1. Receive "Monoscope Pattern" signal.
key 2. Set P-Mode to select BRIGHTNESS.
3. Press Volume Up/Down key to check whether
the BRIGHTNESS effect is OK or not
4 TINT key 1. Receive the "NTSC Colour Bar" signal thru AV
in.
2. Set P-Mode to select TINT.
3. Press Volume Up/Down key to check TINT, UP
for GREEN direction and DOWN for PURPLE
direction whether is OK or not.
5 SHARPNESS 1. Receive "Monoscope Pattern" signal.
Key 2. Set P-mode to select SHARPNESS.
3. Press Volume Up/Down key to check whether
the SHARPNESS effect is OK or not.
6 CH DISPLAY 1. All Ch (1~99) will have an OSD display of the
COLOUR channel number in green colour under AFT ON
condition.
7 NORMAL Key 1. Once in PICTURE Mode, and the NORMAL
key is pressed, all the settings will be present
to normal setting.
(Normal setting value for every mode).
» CONTRAST
: MAX
» COLOUR
: CENTER
» BRIGHTNESS : CENTER
» TINT
: CENTER
» SHARPNESS
: CENTER
8 White Temp 1. Receive "Monoscope Pattern" signal.
2. Set FUNCTION to select WHITE TEMP.
3. Press Volume Up/Down key to check WHITE
TEMP Option, STANDARD:
NORMAL SETTING, WARM for more
REDDISH direction changing, COOL for more
BLUISH direction changing.
Waveform and others
Note: If nothing is display mean
contrast, colour, bright,
tint or sharpness are all in
normal setting.
10-1
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
(Continued)
NO. Adjustment part Adjusting procedure and conditions
9 Colour 1. Receive the "PAL COLOUR BAR" signal, press
system the COLOUR SYSTEM key to select modes
except PAL, check the COLOUR is not working
properly. Then, select the "PAL" mode. Check
again its colour so that it is working properly.
2. Receive "NTSC 4.43" signal, press COLOUR
SYSTEM key to select modes except NTSC
4.43, check the COLOUR is not working
properly. Then, select the "NTSC 4.43" mode.
Check again its colour so that it is working
properly.
3. Receive "NTSC 4.43/3.58 COLOUR BAR" sig-
nal thru AV, press COLOUR SYSTEM key to
select modes except N4.43/3.58, check the
COLOUR is not working properly. Then, select
the "NTSC 4.43/3.58" mode. Check again its
colour so that it is working properly.
10 NOISE MUTE 1. Receive "PAL COLOUR BAR" signal.
2. Turn up the volume control to maximum, make
CHECKING
sure the sound is heard from the speakers.
Then put the unit in no signal state.
3. Check the sound mute is effective.
4. Finally turn sound level of CTV to minimum.
11 OSD Check OSD LANGUAGE quantity and type as
LANGUAGE English, Russian, Chinese, French, Arabic and
QUANTITY Malay.
CHECK
Waveform and others
10-2