Sharp 14GT15, Service Manual

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14GT15
14GT20
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
(Continued)
No. Adjusting point Adjusting procedure/conditions Waveform and others
COLOUR
SYSTEM 1. Receive the "PAL COLOUR BAR" signal, press
the COLOUR SYSTEM key to select modes ex-
cept PAL, check the COLOUR is not working prop-
erly. Then, select the "PAL" mode. Check again
its colour so that it is working properly.
2. Receive "NTSC 4.43/3.58 COLOUR BAR" signal
through AV, press COLOUR SYSTEM key to se-
lect modes except N4.43/3.58, check the COL-
OUR is not working properly. Then, select the
"NTSC 4.43/3.58" mode. Check again its colour
so that it is working properly.
9
SOUND
SYSTEM 10 1. Receive "PAL-B/G" signal, and check the sound
output is working properly or not.
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.
3. Check the sound mute is effective.
4. Finally turn sound level of CTV to minimum.
NOISE MUTE
CHECKING 11
OSD LAN-
GUAGE
QUANTITY
CHECK Check OSD LANGUAGE quantity and type as be-
low:
ENGLISH, THAI. 12
HEADPHONE JACK CHECKING (FOR B & C MODELS ONLY)
No. Adjusting point Adjusting procedure/conditions Waveform and others
HEADPHONE
OUTPUT
CHECKING 1. Receive PAL COLOUR PAR with SOUND 400Hz,
100% MODULATION (
±
50kHz Dev).
2. Maximum volume, and check the headphone
output with 400Hz sound and no sound out from
speaker.
1