JVC HA-W400RF - Print Circuit Board; Measurement Condition

HA-W400RF (EG) /(EK)
14 (No.70245)
5.Print Circuit Board
Surface Back side
shows the B(+) power supply
shows the ground
shows others.
Receiver (Headphones)
CHARGE P. C. BOARD
TOP
4.Measurement Condition
AC IN
Transmitter
Receiver (Headphones)
Distance : 1m (3.28ft)
Reference input signal :1kHz 300mVp-p sine wave
Hedaphone volume control : MAX