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KVC-1000
(X14-)
1. Diversity free-run fre-
quency adjustment
VR201
DIVERSITY FREE
|
RUN FREQUENCY
2. Audio detection coil
adjustment
L301
AUDIO DETECTION
3. Diversity video detec-
tion coil adjustment
L303
DIVERSITY VIDEO
DETECTION
(X35-)
1. Free-run frequency
adjustment
VR110 | 15.734KHz
2. Screen display start
position adjustment
VR70
3. Input signal
With no video input, adjust VR110 so that the HYS frequency is
15.734kHz+0.01kHz.
Apply a composite sync signal (10-step signal) to the SYNC input.
ADJUSTMENT
Adjustment Procedure/Value
Condition
1. Connect a frequency counter to TP [IC201 #7].
Apply 5V at TP [IC201 #8].
2.
3. Apply 2.5V (low impedance) at TP [IC201 #2].
4. Adjust VR201 [15kHz] to read 15625Hz+100Hz.
. Input the 70dBu RF signal of the color bar signal of CH9 to the ANT input
terminal.
. Connect a voltmeter to TP [SIF] (across R304) and adjust L301 to read
OV+0.01V.
:
. Input the 70dBu RF signal of the stair-step signal of CH9 to the ANT input
terminal.
. Observe the waveform at TP [VIDEO] (R327 at the emitter of Q306) and
adjust L303 so that the sync tip and pedestal edge become horizontal as
shown below.
\
Adjustment Procedure/Value
* No ANT input signal
«PAL B/G
+ P/S ratio 10dB
- PAL B/G
* Color OFF
Condition
- No input video
« Adjust VR70 so that the phase difference between the negative going of
HSY and positive going of SYNC is 2.1usec. Instead of the above, it is
also acceptable to adjust the monoscope screen so that its left and right
sections are even.
- Monoscope
- To the VIDEO input
of Moth er (X14).
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