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6.
Colour Output
Outline
In order to avoid damage caused by long cathode lines and thereby trim the
frequency response, the RGB output stage is mounted on the CRT board. The RGB
signals fed to the colour output stage are fed from IC601 (located on the A-Board) from
pins 56 (R), 57 (G), 58 (B). Here the signal is then fed to IC351 pin 1 (R), pin 2 (G), pin
3 (B) to the inverting input of an operation amplifier. The signals are output via pin 9 (R),
pin 8 (G) and pin 7 (B) to drive the CRT cathodes.
R-IN
G-IN
B-IN
210V
BLK
GND
8V
Fig 6.1
24
R-OUT
G-OUT
B-OUT
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