14Gt15 - Sharp 14GT15 Service Manual

14GT15

14GT20
FUNCTION OPERATION CHECKING (VIDEO AND AUDIO)
No. Adjusting point
9 COLOUR
SYSTEM
10 SOUND
SYSTEM
11 NOISE MUTE
CHECKING
12 OSD LAN-
GUAGE
QUANTITY
CHECK
HEADPHONE JACK CHECKING (FOR B & C MODELS ONLY)
No. Adjusting point
1 HEADPHONE
OUTPUT
CHECKING
(Continued)
Adjusting procedure/conditions
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.
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.
Check OSD LANGUAGE quantity and type as be-
low:
ENGLISH, THAI.
Adjusting procedure/conditions
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.
18
Waveform and others
Waveform and others