Panasonic BT-M1950Y Service Manual page 108

BT-M1950Y
C561, C504 and C562 are respectively selected during fast, normal and slow. The horizontal sync signal is sent
through AFC, oscillator and drive circuits of IC501 to produce the horizontal drive pulse output from pin 15.
$KEW1
Fig. 1-2 AFC time constant selection
AFC
IC~Ot
®
2. Horizontal output circuit
The drive pulse from IC501 pin 15 is sent via 0501 (horizontal drive) and T502 (drive transformer) to 0502 (horizontal
output) to produce the output pulse.
A diode modulator circuit is used in the horizontal output section. The parabolic waveform from IC00l is amplified by
0510, 0504 and 0511, and side pincushion distortion corrected.
The center point DC of the diode modulator is controlled for controlling the horizontal size. C518 and C519 are used for
S correction.
JUL
DY
~DIODE MODULATOR1
IL 502
UH.
LIN
~S-CORRECTION.
ICO(?~,,____ __ __.~PARABORA
0510, 0511
~-, ~A_M_P. __ __, 0504
~
PARABORA
Fig. 2-1 Horizontal output circuit
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