Service manual

At the end of the slope, the SCAVEM-current decays to zero, and the spot is at the
original position. An overshoot occurs which improves the impression of sharpness. At
the negative slope, the SCAVEM-current counteracts the deflection.
During the first half of the slope, the spot is delayed and the slope becomes steeper.
During the second half the spot accelerates, the SCAVEM-current is zero at the end of
the slope.
The Y-scavem signal comes from diagram B4 and is the input-signal for the scavem-
circuitry on the CRT-panel. (Y-scavem enters the CRT-panel on pin 5 of 0340).
The Y-scavem circuitry has or a RGB 2fh-input via AV4-input, or Yttp-input (= cvbs) for
the other signal sources
Via TS7300 this signal is fed to emitter follower TS7304.The signal is conveyed to the
differentiator C2303, R3309, and R3318. Only the high frequencies are differentiated
(small RC-time).
The positive and negative pulses of this signal drive respectively TS7303 and TS7302
into conductivity. The DC setting of the output stage is set by R3304, R3308, R3316,
and R3319. The working voltage of the transistors is settled at half the supply voltage.
At the positive section of the pulse, the current flows through R3318, C2307, the
SCAVEM-coil, and TS7303. At the negative section of the pulse, the current flows
through R3318, C2304, the SCAVEM-coil, and TS7302.
Picture In Picture (PIP)
Introduction:
The PIP panel provides the option for viewer to see two pictures or programs on the
displayed area of a TV screen. The size and position of the 'second' picture can also be
selective by the viewer.
The PIP panel execution is only applicable to NAFTA only.