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2-7. 0% Setup Adjustment
Note:The following adjustment menus are under the BK
BOARD menu of the MAINTENANCE menu.
R SETUP
G SETUP
B SETUP
1.
Input only the Y signal of the color bar signal (Turn off the
R-Y signal and B-Y signal.).
2. Connect the oscilloscope to TPI04.
3. As shown in Fig. 2-11, adjust the R SETUP data so that the
black level and setup signal level becomes equal.
4. Connect the oscilloscope to TB304.
5. As shown in Fig. 2-11, adjust the G SETUP data so that the
black signal level and setup signal level become equal.
6. Connect the oscilloscope to TP504.
7. As shown in Fig. 2-11, adjust the B SETUP data so that the
black signal level and setup signal level become equal.
When SETUP 0% signal is input
When SETUP 7.5% signal is input
Fig. 2-11.
4-22
2-8. 100 IRE Adjustment
Note:The following adjustment menus are under the BK
BOARD menu of the MAINTENANCE menu.
R 100 IRE
G 100 IRE
B 100 IRE
I. Input only the Y signal of the color bar signal (Turn off the
R-Y signal and B-Y signal.).
2. Connect the oscilloscope to TPI04.
3. As shown in Fig. 2-12, adjust the R 100 IRE data so that the
100 IRE level and 100 IRE pulse level of the signal become
equal.
4. Connect the oscilloscope to TB304.
5. As shown in Fig. 2-12, adjust the G 100 IRE data so that the
100 IRE level and 100 IRE pulse level of the signal become
equal.
6. Connect the oscilloscope to TB504.
7. As shown in Fig. 2-12, adjust the B 100 IRE data so that the
100 IRE level and 100 IRE pulse level of the signal become
equal.
Minimize the level difference.
±
2 mV
L
-t
~
100 IRE pulse
Fig. 2-12.
2-9. BIAS REF Adjustment
Note:The following
adjustment
menu is under the BK
BOARD menu of the MAINTENANCE menu.
BIAS REF
I. Input the 20 IRE all-white signal.
2. Connect the oscilloscope to TP506.
3. As shown in Fig. 2-13, adjust the BIAS REF data so th,t the
all white peak level and BIAS REF pulse level of the signal
become equal.
(Oscilloscope is V period)
Minimize the level difference.
±
5 mV
i
_--'t'------
--,..-
~
--
-\
BIAS REF pulse
Fig. 2-13.
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