[ Tilt Circuit ]; [ Horizontal Size Modulation Circuit ]; H-Size And East-West Pwm Generator - Mitsubishi Electric Diamond View 1995SL Service Manual

Crt monitor

1995SL CRT Monitor Service Guide

Chapter 2 Circuit Operation Theory

[ Tilt Circuit ]

Q204 generates a 12V PWM and the buffer (Q205 and Q206) outputs 0~11VDC to get positive and negative coil

current for tilt.

< H-size and East-west PWM generator >

Q207 and Q208 constitute a saw-toothed waveform (IC203 pin2)generator. It takes the PWM from HDRV via

the driver transistor Q301. Q210 acts as a thermal compensation. VR201 preset H-size to assure over-scan at

every preset mode. IC203 pin3 consists of HSIZE (via R257) and East-west waveform (via R203, from IC201

pin11). Then the comparator IC203 takes signals of pin2 and pin3 to generate a control-size PWM.

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