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The signal fed from the Dolby P.W. Board (P600) comes to JL04 and is rectified through
HLO6G. The rectified output at JLO6 is led to the meter MO04.
7. DOLBY
SWITCH
This switch sets the Dolby noise-reduction circuit for record or playback and also switches
the Meter Mode from AM or FM SIGNAL STRENGTH
to DOLBY
CAL LEVEL, or vice-versa.
With
the DOLBY
Switch
placed
in "OFF"
position, the Meter will be used as a SIGNAL-
STRENGTH
meter; in all other positions as a DOLBY CAL LEVEL meter.
7.1
Dolby FM
This position is used for listening to Dolbyized FM broadcasts. The Dolby FM level has been
pre-adjusted at the factory.
7.2
Play
This position is used to play back a Dolbyized source (except FM).
7.3
Off
With this position, the Dolby circuit is by-passed and the input signals are directly applied to
both TAPE MONITOR OUT jacks and amplifiers.
7.4
Record |
For making a Dolbyzied recording from an in-coming ''flat'' (non-Dolbyized) signal. When
the MONITOR switch is in the SOURCE (out) position, the 'flat' signal will be heard. When the
MONITOR switch is in the TAPE (in) position, the Dolbyzied signal from the tape will be heard.
7.5
Record II
For making
a "'flat''
(non-Dolbyized)
recording
from
an in-coming
Dolbyized
signal.
Regardless of the position of the MONITOR switch, a "flat'' signal will be heard.
8.
RECORD LEVEL (L) (R)
These knobs control the record level of the signals to be recorded through the Dolby unit.
9. PLAY CAL. (L) (R)
These knobs adjust the playback outputs from a tape deck to the proper Dolby level.
10.
DOLBY FM PRESET LEVEL CONTROLS
These factory-adjusted controls govern FM output level to the Dolby circuit. These control
are for the use of a qualified technician only.
11.
400Hz TONE SWITCH
This is used for calibration of the record input level of the tape deck. When the switch is
12.
FM DE-EMPHASIS SWTICH
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