Sharp SX68JF100, Service Manual

Page: 11 / 56

11
SX68JF100
11-1 11-2
NO. Adjustment part Adjusting procedure and conditions Waveform and others
A/V INPUT/OUTPUT CHECK
1 Video output
check
Audio output
check
1
Receive E-12CH colour bar (colour bar audio
400Hz 100% MOD of 100% white).
2
The video output must be within the specified
range of 1.0Vp-p ± 3dB at the 75 ter minator.
3
The audio output must be within the specified
range of 1.76Vp-p ± 3dB at the 10k ter mina-
tor.
2 Video input
check
Audio input
check
S-terminal input
check
1
The mode must be switched in the cycle of TV
→
AV1
→
AV2
→
AV3
→
DVD
→
TV with TV/
AV key of R/C, and the picture and sound which
correspond to each input/output terminals must
be properly output.
* Here, DVD is applied for the input alone.
2
When the connector is inserted into the S-video
input terminal on AV1, it must be switched from
AV to S-video and must be properly operated.
Moreover,
check “AV1-S” of OSD.
3
When the connector is inserted into the S-video
input terminal on AV3, it must be switched from
AV to S-video and must be properly operated.
Moreover,
check “AV3-S” of OSD.
3 AV3 automatic
discrimination
check
1
Receive TV with R/C.
2
When the signal is input to the video input ter-
minal of AV3, it is automatically switched to
AV3.
3
When the signal is input to the S-video input
terminal of AV3, it is automatically switched to
AV3-S.
* Setting: Auto select in the feature menu — ON
NO. Adjustment part Adjusting procedure and conditions Waveform and others
FUNCTION OPERATION CHECK (1) (VIDEO AND AUDIO)
1 CONTRAST
1
Receive E-5CH.
2
Select CONTRAST by picture menu.
3
The contrast must be varied with UP/DOWN.
2 COLOUR
1
Receive J-13CH.
2
Select COLOUR by picture menu.
3
The colouring must be varied with UP/DOWN.
(Any colour must not remain in MIN.)
3 BRIGHTNESS
1
Receive E-5CH.
2
Select BRIGHT by picture menu.
3
The black level must be varied with UP/DOWN.
4 TINT
1
Receive J-13CH. (NTSC colour bar)
2
Select TINT by picture menu.
3
With UP/DOWN, the tint must be varied toward
green for UP, and toward red for DOWN.
5 NORMAL
1
If NORMAL key is pressed when the mode is
displayed in P/S-mode, the displayed content
alone must be set to be normal. (At standard
mode.)
CONTRAST
: 50
COLOUR : CENTER
BRIGHTNESS : CENTER
TINT : CENTER
SHARPNESS : CENTER
* If it is not displayed,
CONTRAST, COLOUR, BRIGHT,
TINT and SHARPNESS must be
all set to be normal.
6 SHARPNESS
1
Receive E-5CH.
2
Select SHARPNESS by picture mode.
1
The screen quality must be varied with UP/
DOWN.
7 CH sign display
colour
1
All CH (0 thru 99) sign must be displayed in
green. * If the TV is factory setting.
8 TREBLE
1
Receive E-5CH.
2
Select TREBLE by sound menu.
3
The high band must be varied with UP/DOWN.
9 BASS
1
Receive E-5CH.
2
Select BASS by sound menu.
3
The low band must be varied with UP/DOWN.
10 BALANCE
1
Receive E-5CH.
2
Select BALANCE by sound menu.
3
Verify that the left/right balance must be var-
ied with UP/DOWN.