Sharp 29WF200, Service Manual

Page: 13 / 68

13
13-1
13-2
29WF200
29WF500
OFF SET OFF SET
No.
Adjusting point
Adjusting condition/procedure
W
aveform or others
SECAM BLACK LEVEL R-Y/B-Y I
2
C BUS
AD-
JUSTMENT
1.
Receive (SECAM colour bar).
2
.
Select SECAM black level adjustment R-Y
mode.
3
.
Connect the oscilloscope to pin(20) of IC201(R out).
»
Range
: 10mV/Div
.
»
Sweep time
:
20
µ
sec/Div
.(Probe 10:1 is used)
4
.
V
ary R-Y
data to minimize the of
fset between the
non-signal line and signal line as shown in Fig.10- 1(b)
5
.
Select SECAM black level adjustment B-Y
mode.
6.
Reconnect the oscilloscope to 22pin of IC800 (B Out) The conditions are the same as in Item 3.
7.
V
ary B-Y
data to minimize the offset between the
non-signal line and signal (TP47RB) line as shown in Fig.10-2(b)
1
Fig. 10-1(a)
SECAM CHROMA
ADJUSTMENT(29WF500 only)
Fig. 10-1(b) Fig. 10-2(a) Fig. 10-2(b)
FUNCTION OPERA
TION CHECKING (VIDEO
AND
AUDIO)
No.
Adjusting point
Adjusting condition/procedure
W
aveform or others
CONTRAST key
1.
Receive "Monoscope Pattern" signal.
2.
Press to MENU mode, then Select Picture Mode and set to select CONTRAST
.
3
.
Press V
olume Up/Down key to check whether the
CONTRAST
ef
fect is OK or not.
1
1.
Receive "Colour Bar" signal.
2.
Press to MENU mode, then Select Picture Mode and set to select COLOUR.
3
.
Press V
olume Up/Down key to check whether the
COLOUR ef
fect is OK or not.
2
COLOUR key BRIGHTNESS key
1.
Receive "Monoscope Pattern" signal.
2.
Press to MENU mode, then Select Picture Mode and set to select BRIGHTNESS.
3
.
Press V
olume Up/Down key to check whether the
BRIGHTNESS ef
fect is OK or not.
3
TINT key
1
.
Receive the "NTSC Colour Bar" signal thru
A
V
in.
2.
Press to MENU mode, then Select Picture Mode and set to selectTINT
.
3
.
Press V
olume Up/Down key to check
TINT
, UP
for GREEN direction and DOWN for RED direc- tion whether is OK or not.
4
SHARPNESS Key
1.
Receive "Monoscope Pattern" signal.
2.
Press to MENU mode, then Select Picture Mode and set to select SHARPNESS.
3
.
Press V
olume Up/Down key to check whether the
SHARPNESS ef
fect is OK or not.
5
WHITE TEMP
1.
Receive "Monoscope Pattern" signal.
2.
Set FUNCTION to select WHITE
TEMP
.
3
.
Press V
olume Up/Down key to check WHITE
TEMP
Option, ST
ANDARD:
NORMAL
SETTING, W
ARM for more REDDISH
direction changing, COOL
for more BLUISH di-
rection changing.
8
NORMAL
Key
7
1.
Once in PICTURE Mode, and the NORMAL
key
is pressed, all the settings will be present to nor- mal setting. (Normal setting value for every mode, refer table on page8-1.)
Notes:If nothing is display
mean contrast, colour
, bright,
tint, sharpness are all in nor- mal setting.
CH DISPLA
Y
COLOUR
1
.
All Ch (1~99) will have an OSD display of the channel number in green colour under
AFT
ON
condition.
6