By-Pass Switch "In"; By-Pass And Monitor Switches "In"; Meter Switch "In"; Led Meter Indicates Signal At Output Jack When Meter Switch Is "In" - ADC Sound Shaper Three Service Manual

Figure 8
WHEN BY-PASS SWITCH IS "IN", LED METERS INDICATE AT 0 dB POINTS ONLY, REGARD-
LESS OF OUTPUT SIGNAL.
NOTE: RIGHT CHANNEL LED METER INDICATES OUTPUT OF SOUND LEVEL METER
WHEN CONNECTED TO SLM JACK. (METER SWITCH IN EITHER POSITION)
- 11 -
BY-PASS SWITCH "IN"
MON
24 23
BY-PASS
8 7
BY-PASS
10 11
MON
18 17
INPUT
L1NE·REC
IN OUT
EQUALIZATION/SIGNAL
GAIN CONTROL CIRCUIT
Figure 5
BY-PASS and MONITOR SWITCHES "IN" MON
MON BY-PASS BY-PASS L1NE-REC
22 23 8 7 10 11 15 14
INPUT OUTPUT
LINE-REC
IN OUT
EQUALIZATION/SIGNAL
GAIN CONTROL CIRCUIT
Figure 6
METER SWITCH "IN"
BY-PASS/EO SWITCH TO "BY-PASS"
OUTPUT
27
26 BY-
PASS
-B line (-5.6 V)
Figure 7
BY- 29
PASS 30
R145
(R146)
Comparator
LED METER INDICATES SIGNAL AT OUTPUT JACK WHEN METER SWITCH IS "IN".
METER ::
LED METER
METER SWITCH "IN"
BY-PASS/EO SWITCH TO "EO"
OUTPUT
HALF-WAVE
RECTIFIER
AND
COMPARATOR
CIRCUIT