Sharp 21J-FG1RU, Service Manual

Page: 27 / 75

21J-FG1RU
3 – 24
No. Adjustment point Adjustment procedure/conditions Waveform and others
COLOUR
SYSTEM 9
10 SURROUND
TREBLE 11
1) Receive the "PAL COLOUR BAR" signal, press
MENU, choose CH-SETTING to select COLOR
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 "SECAM COLOUR BAR" signal, press
MENU, choose CH-SETTING to select COLOR
modes except SECAM, check the COLOUR is not
working properly. Then, select the "SECAM" mode.
Check again its colour so that it is working properly.
3) Receive "NTSC 4.43" signal, press MENU, choose
CH-SETTING to select COLOR modes except
N443, check the COLOUR is not working properly.
Then, select the N443 mode. Check again its col-
our so that it is working properly.
4) Receive "NTSC 3.58" signal thru AV, press MENU,
choose CH-SETTING to select COLOR modes ex-
cept N358, check the COLOUR is not working
properly. Then, select the N358 mode. Check again
its colour so that it is working properly.
1) Receive "music" sound signal.
2) Set MENU, then go into SOUND MENU to select
SURROUND.
3) Press VOLUME UP/DOWN key to check SUR-
ROUND I, II and OFF effect.
1) Receive "music" sound signal.
2) Set MENU, then go into SOUND MENU to select
TREBLE.
3) Press VOLUME UP/DOWN key to check whether
the TREBLE effect is OK or not.
BASS 12
1) Receive "music" sound signal.
2) Set MENU, then go into SOUND MENU to select
BASS.
3) Press VOLUME UP/DOWN key to check whether
the BASS effect is OK or not.
BALANCE 13
1) Receive mono-tone signal.
2) Set MENU, then go into SOUND MENU to select
BALANCE.
3) Press VOLUME UP/DOWN key to check whether
the left to right BALANCE effect is OK or not.
NOISE MUTE
CHECKING 14
1) Receive "PAL COLOUR BAR" signal.
2) Turn up the volume control to maximum, make sure
the sound is heard from the speakers. Then put the
unit in no signal state.
4) Finally turn sound level of CTV to minimum.
3) Check the sound mute is effective.