Waveforms - Sylvania SRT2232X Service Manual

WF1 ~ WF16 = Waveforms to be observed at
Waveform check points.
(Shown in Schematic Diagram.)
GND
WF1
1DIV: 0.5V 20µsec
IC 33 Pin 3
WF2 1DIV: 0.5V 20µsec
IC 333 Pin 14
GND
1DIV: 2V 20µsec
WF3
Q 1511 Base
GND
WF4 1DIV: 2V 20µsec
Q 1521 Base
8-1
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WAVEFORMS

GND
WF5 1DIV: 2V 20µsec
Q 1531 Base
WF6 1DIV: 0.2V 20msec
IC 801 Pin 5
GND
WF7 1DIV: 10V 20µsec
Q 572 Collector
WF8 1DIV: 5V 20µsec
Q 571 Base
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%)
GND
WF9 1DIV: 200V 20µsec
CN 571 Pin 1
GND
WF10 1DIV: 5V 20µsec
WH501A Pin 3
WF11 1DIV: 2V 5msec
IC 551 Pin 7
10 V 5 ms
WF12 1DIV: 10V 5msec
CN 571 Pin 4
8-2
WF13 1DIV: 20V 20µsec
Q 1531 Collector
WF14 1DIV: 20V 20µsec
Q 1521 Collector
WF15 1DIV: 20V 20µsec
Q 1511 Collector
WF16 1DIV: 0.2V 20µsec
TU 1 Pin 8
L6650WF