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 10 (click to view)
ADJUSTMENTS
4-3. FM ADJUSTMENT METHOD
STEP
SUBJECT
FEED SIGNAL FROM TO
MEASURE OUTPUT
ADJUST POINT
ADJUSTMENT
1
IF adjust
98.1 MHz, ANT input 60dBu, 1kHz ANT jack (30% MOD) FM and GND SSG
The voltage between CW03
FM DET
Adjust for 0V 0.05V
2
MPX IC Separation Control
98.1 MHz, ANT input 40dBu, 1kHz ANT jack L or R CH SP. output wire (L+R=45% and GND VTVM and Scope L-R=45% PILOT=10% MOD)