I am so happy found this site as it consists of so many Manuls and easy to aquire. This onei s exactly what I wanted and much more as it has info on not only how to use the tuner but how to repair it as well. I will come here 1st before purchasing else where! Thanks owner-manual.com!
is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
Text excerpt from page 16 (click to view)
2-6. Word Sync Output Waveform Confirmation
2-6. Word Sync Output Waveform Confirmation
Preparation 1. Connect each equipment. (Refer to Fig.1 in Section 21-2.) 2. Extend the AVM-6 board using an extension board. 3. Turn on the power of the main unit (PFV-D20/D50/ D100A/D200A/D300) and warm up for ten minutes. Measurement Equipment Oscilloscope Procedures 1. Confirm that S802 (P-8) is set to NORMAL. 2. Provide the output signal from the WORD SYNC OUT connector to the CH1 of an oscilloscope using a coaxial cable. At that time, terminate the input connector of the oscilloscope using 75 Z feedthrough terminator. 3. Observe a waveform in the DC coupling mode of the oscilloscope and confirm that the waveform below is displayed.
0.50 ±0.03 Vdc 0 Vdc _0.50 ±0.03 Vdc 20.8 µs (48 kHz)
4. Confirm that the waveform below is displayed when S802 is set to HIGH.
2.6 ±0.1 Vdc