Symphonic WFT20M4 Service Manual page 35

WF1 ~ WF16 = Waveforms to be observed at
Waveform check points.
(Shown in Schematic Diagram.)
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%)
WF9 1DIV: 200V 20µs
CN 571 Pin 1
WF10 1DIV: 5V 20µs
WH501A Pin 3
WF11 1DIV: 1V 5ms
IC 551 Pin 7
WF12 1DIV: 10V 5ms
CN 571 Pin 4
GND
WF13
GND
WF14
GND
WF15
WF16
8-2
1DIV: 20V 20µs
Q 1531 Collector
1DIV: 20V 20µs
Q 1521 Collector
1DIV: 20V 20µs
Q 1511 Collector
1DIV: 0.2V 20µs
TU 11 Pin 8
L2403WF