Sharp SX68JF100 Service Manual page 11

A/V INPUT/OUTPUT CHECK
NO. Adjustment part Adjusting procedure and conditions
1 Receive E-12CH colour bar (colour bar audio
1 Video output
check 400Hz 100% MOD of 100% white).
2 The video output must be within the specified
Audio output
check 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.
1 The mode must be switched in the cycle of TV
2 Video input
→ AV1 → AV2 → AV3 → DVD → TV with TV/
check
Audio input AV key of R/C, and the picture and sound which
check correspond to each input/output terminals must
S-terminal input be properly output.
check * 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.
1 Receive TV with R/C.
3 AV3 automatic
2 When the signal is input to the video input ter-
discrimination
check 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
Waveform and others
11-1
FUNCTION OPERATION CHECK (1) (VIDEO AND AUDIO)
NO. Adjustment part Adjusting procedure and conditions
1 Receive E-5CH.
1 CONTRAST
2 Select CONTRAST by picture menu.
3 The contrast must be varied with UP/DOWN.
1 Receive J-13CH.
2 COLOUR
2 Select COLOUR by picture menu.
3 The colouring must be varied with UP/DOWN.
(Any colour must not remain in MIN.)
1 Receive E-5CH.
3 BRIGHTNESS
2 Select BRIGHT by picture menu.
3 The black level must be varied with UP/DOWN.
1 Receive J-13CH. (NTSC colour bar)
4 TINT
2 Select TINT by picture menu.
3 With UP/DOWN, the tint must be varied toward
green for UP, and toward red for DOWN.
1 If NORMAL key is pressed when the mode is
5 NORMAL
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
1 Receive E-5CH.
6 SHARPNESS
2 Select SHARPNESS by picture mode.
1 The screen quality must be varied with UP/
DOWN.
1 All CH (0 thru 99) sign must be displayed in
7 CH sign display
colour green.
1 Receive E-5CH.
8 TREBLE
2 Select TREBLE by sound menu.
3 The high band must be varied with UP/DOWN.
1 Receive E-5CH.
9 BASS
2 Select BASS by sound menu.
3 The low band must be varied with UP/DOWN.
1 Receive E-5CH.
10 BALANCE
2 Select BALANCE by sound menu.
3 Verify that the left/right balance must be var-
ied with UP/DOWN.
Waveform and others
* If it is not displayed,
CONTRAST, COLOUR, BRIGHT,
TINT and SHARPNESS must be
all set to be normal.
* If the TV is factory setting.
11-2