Waveforms – Emerson 20" Color Television 6420FE User Manual

Page 36

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background image

WAVEFORMS

L2701WF

8-1

1DIV: 0.5V 20

µs

IC 111 Pin 26

WF1

GND

1DIV: 0.5V 20

µs

IC 111 Pin 14

WF2

1DIV: 2V 20

µs

Q1511 Base

WF3

GND

1DIV: 2V 20

µs

Q 1521 Base

WF4

GND

Input:

NTSC Color Bar Signal (with 1kHz Audio Signal)

INITIAL POSITION: Unplug unit from AC outlet for at least 5 minutes.
reconnect to AC outlet and then turn power on.
(Brightness---Center Color---Center Tint --- Center Contrast---Approx 70%)

1DIV: 0.2V 20ms
IC 801 Pin 3

WF6

1DIV: 2V 20

µs

Q 1531 Base

WF5

GND

1DIV: 10V 20

µs

Q 572 Collector

WF7

GND

1DIV: 5V 20

µs

Q 571 Base

WF8

WF1 ~ WF16 = Waveforms to be observed at
Waveform

check

points.

(Shown in Schematic Diagram.)

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