Panasonic AJ-SDC915 Operating Instructions Manual page 96

Recording
Procedures from adjusting the white balance and black balance to
stopping recording
Turn on the power, insert a cassette, and then set the various switches as follows.
AUDIO SELECT CH1/CH2: AUTO
TCG: F-RUN or R-RUN
OUTPUT: CAM/AUTO KNEE ON
GAIN: Normally, set to 0 dB. When it is too dark,
it is set to the appropriate gain.
Iris: AUTO
– 96 –