Circuit Descriptions - Pioneer VSX-4000 Service Manual

15.1 CIRCUIT DESCRIPTIONS
Mi ENHANCER CIRCUIT
When the enhancer volume is set to the sharp position, the
rising edge of the waveform becomes steep as shown in
Fig. &) - @ and the contour of the TV screen picture
becomes precise and sharp. When the enhancer volume is
set to the soft position, the rising edge of the waveform
becomes smooth as shown in Fig. (X) -@ and the contour
of the TV screen picture becomes soft.
The original signal passed through the buffer amplifier
and the signal to which enhancer has been applied are
mixed with each other in the MIXER circuit and output
to the respective output terminals (See Fig. &) ).
46
e Frequency characteristics
®
J
ou -58MHz
;
3.58MHz
J
850kHz
Sharp side
@|@
Soft side
®
SOOkHz 2MHz 3.58MHz
an