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KV-28WF1
SYSTEM B/G, D/K, I & L I.F ADJUSTMENT
DEFLECTION SYSTEM ADJUSTMENT
1. Input an off air signal of between 60-100dBuV / 75 ohm terminated, via the tuner socket. 2. Enter into the I.F adjustment service mode (i.e. " TT 59 " ) to fix the I.F frequency to 38.9 MHz. 3. Enter into the service mode and select "Current TVStatus". 4. Adjust the I.F coil (LV01) until the "AFT Status" indicates a " Window " condition.
SYSTEM L BAND 1 I.F ADJUSTMENT
1. Enter into the Geometry Adjustment Service Menu. 2. Select and adjust each item in order to obtain the optimum image.
GEOMETRY ADJUSTMENT V Size V Position S Correction V Linearity H Size H Position Pin Amp Pin Phase AFC Bow AFC Angle EHT V EHT H Corner Pin Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj Adj
1. Input an off air signal of between 60-100dBuV / 75 ohm terminated, via the tuner socket. 2. Enter into the I.F adjustment service mode (i.e. " TT 59 " ) to fix the I.F frequency to 34.2 MHz. 3. Enter into the service mode and select "Current TVStatus". 4. Adjust the RV02 until the "AFT Status" indicates a " Window " condition.
TUNER AGC ADJUSTMENT
1. Receive a signal of 63dBuV / 75 ohm terminated via the tuner socket. 2. Measure the voltage at test point 1 (A board). 3. Adjust RV01 to obtain a voltage of 3.0V ± 0.3V.
V SIZE
RV01 RV02 LV01
V LIN
S CORRECTION
A
TUNER / IF
TP1
V CENTRE
H SHIFT
H SIZE
- A Board component side -
PIN AMP
TILT
CORNER PIN
V ANGLE
� 30 �
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