I love older radio's and the service manuals that are sometimes hard to find. Was able to find a manual quite easily on this site.
Text excerpt from page 9 (click to view)
2. PLAYBACK Y-SINGAL OUTPUT LEVEL Adj. Location RV396 Checking Point TP396 Measuring Equipment Oscilloscope Mode PB Test Tape DP-1
1) Playback the test tape (Color Bar Signal). 2) Connect the oscilloscope to TP396 and trigger the scope will a composite SYNC signal at TP313. 1) Adjust the scope so that it can display a waveform of approx. 2H. 3) Adjust RV396 to optain 2.0VP¡ 0.2 Vp-p between the SYNC TIP and 100% white level.
2.0¡ 0.2Vp-p
Horizontal 10Â¥s/div Vertical 0.5V/div.
3. SYNC TIP FREQUENCY Adj. Location RV391 Checking Point TP391 Measuring Equipment Oscilloscope Mode REC. Test Tape �¡
1) Set the unit to stop mode without video signal. (Jack of video line input is shorted with ground). 2) Conncet the frequency counter to TP391. 3) Adjust RV391 until the SYNC TIP frequency becomes 3.80 MHz¡ 0.1 MHz.
