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Operating voltage +145V:
1) Set contrast and brightness to minimum (minimum beam current!).
2) Check point: cathode of diode D 226 against secondary ground (GND).
3) Adjust R 202 until the measured voltage is +145V (±0.5V).
Alignment AGC voltage:
1) Feed in a B/G-PAL-test pattern without sound carrier on channel 60. Antenna input level of 63 dBµV at
75Ω.
2) At tuner pin1 (AGC) and pin3 (GND) connect a voltmeter and adjust the voltage by changing the value
of the AGC-parameter. Set voltage to:
Tuner UV 1316-SIG-3
G2 adjustment:
1) Prior to the G2 adjustment the TV-set should run for approx. 30 minutes.
2) Input signal: greyscale
3) Measure cathode-voltages by using a oscilloscope with 100:1 probe. Adjust the G2 controller until the
measured value of the cathode with the highest value is 145 V.
Focus adjustment:
Single-focus tube:
1) Feed in a practical test pattern
2) Set colour, brightness and contrast to nominal value
3) Adjust focus controller until picture is sharp
Bi-focus tubes (option):
1) Feed in a practical test pattern
2) Set colour, brightness and contrast to nominal value
3) Adjust focus of horizontal lines with controller "FOC-L"
4) Adjust focus of vertical lines with controller "FOC-H". The adjustment has to be repeated re-
ciprocally.
Black-white balance (Cut off / White Drive):
Cut off:
1) The NVM default values for cut off are 48.
2) Set the three NVM cut off values until the dark grey areas turn achromatic.
3) The value of the cathode with the highest gain has to remain unchanged, increase the val-
ues of the two other cathodes.
white drive:
1) The default values for NVM white-drive are 130, except for chassis TV18.4 it´s 120.
2) "NVM white drive blue" must not be changed.
3) Adjust only values of "NVM white drive green" and "NVM white drive red".
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2,5V (± 0,05 V) DC
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