The purchased manual is an scan of the original Panasonic paper-based Service Manual. Unfortunately the contrast is not perfect, but I am satisfied anyway!
The purchased manual is an high-quality scan of the original JVC paper-based Service Manual. The Service Manual includes the Owner´s Manual, so you do not have to buy both of them.
Complete manual with clear schematic diagrams and printed circuit board layouts of two variants of the headset and the transmitter an old and a new version.
Also shows how the headset and the transmitter is opened and how transmitter and receivers can be adjusted and where to measure.
I had no problems to repair the headset using this service manual.
Text excerpt from page 19 (click to view)
Procedure: FM Stereo signal generator output channel L-CH. R-CH R-CH L-CH.
L-CH. Stereo separation: ¨� - ¨� R-CH Stereo separation: ¨� - ¨� ¡� IF BAND Switch NORMAL: Adjust VR 201 NARROW: Adjust VR 202 The separation of both channels should be equal.
AM SECTION
AM VT Adjustment 1. Set to AM 522 kHz and adjust L502 so that voltage of TP401 becomes 1.25V ± 0.1V 2. Set to AM 1611 kHz and adjust CT 502 so that voltage of TP 401 becomes 8.5 ± 0.1V 3. Repeat the above adjustments 1 and 2.
