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Verfügbare Sprachen
CHROMA
CIRCUIT
ALIGNMENT
Conditions:
checking points K-3 and K-4.
@ Reception of 12 ch. colour bar signal;
@ Parts to be adjusted;
The electrical field intensity must be adjusted to make
R812 .....
1H delay line amplifier
picture on the screen be free from noises: the PIF must
T802 .....
1H delay line phase control
have been completely adjusted to a proper level.
T801
.....
Subcarrier phase control
® Checking points;
:
Make sure there appear (R-Y) and (B-Y) signals at the
STEP
ADJUST POINT
PROCEDURE
1
Set the colour control to the extreme right position, the contrast control to the right extreme
1H delay line Amp.
position and the brightness control to the extreme left position, too.
Using the control R812, adjust the composite colour difference signal in Fig. 10 to attain the best
waveform (white portion) be best.
Using the control T802, adjust the cyan and red portions in Fig. 11 to attain the best waveforms.
1. Using the control T801, adjust the red portion in Fig. 12 to reach the best waveform.
2. Using the control T801, adjust the magenta portion in Fig. 12 to reach the best waveform.
adjustment
3
1H delay phase
adjustment
4
(R-Y) Subcarrier
Phase adjustment
5
Overall adjustment
Figure 10.
As a result of the adjustments 1 to 4, you may have attained the waveforms shown in Fig. 13.
If the waveforms are still insufficient, readjust from the beginning.
This is the waveform
attained .after the
adjustment
3 above,
'
woY
Cy Gr MR. BI Bk
Figure 11.
Figure 12.
Figure 13.
@ Adjustment of the tuning auxiliary control
1. Turn the tuning control to tune in a certain channel.
channel,
2. Adjust the tuning auxiliary control (VH: R244, VL:
3. Tune in another channel, and check if its channel
R245 or UHF: R243) to obtain best picture of that
accordance is normal.
13
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