18
VERTICAL DEFLECTION
On the 50Hz D8 the vertical drive pulse come from pin 61 (VA OUT) of I200 and on the 100Hz A8 it comes from pin 31 of UQ01.
This is fed via K65 and RV02 to pin 23 of IE02. The vertical sawtooth waveforms are output from pins 1 and 2 of IE02 and fed to
pins 11 and 12 of I601 via RV04 and RV03. I601 (TDA8354) is the vertical output amplifier, it requires 2 supply voltages,
approximately 14V to pins 4 and 10 to operate the IC and approximately
48V to pin 7 for the flyback pulse generator. The outputs
are from pins 2 and 9 with the gain setting feedback resistors R602 and R603 connected to pin 5.
Pin 1 is the vertical guard which is connected to pin 9 of IE02 if a vertical failure is detected the vertical part of the sandcastle pulse
is removed and IE02 blanks the picture to prevent damage to the tube. Z615 samples the flyback pulse which is then clamped by
Z606 this generates the frame pulse used by the micro I001.
EAST WEST CORRECTION
The east west parabola is output from pin 3 of IE02 and fed to the gate of Q700 via RH04. The drain of Q700 is connected to the
centre of the diode modulator D706 and D707 via the east west injection coil L751.
HIGH END FEATURE BOX
LOW END FEATURE BOX
Содержание C28W40TN
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