Service manual

Monitor Schematic 5/21/2007Rev A
ARC Console
Arrakis Systems
+
5532
U1A
1
2
3
_
22K
10pF
L
R
CR
Monitor
Output
(-10dBu)
CD4053
U4C
13
12
14
11
X/Y
ctrl
X
Y
6
inh
Vdd
5VDC
+
OUTPUTS
PL
PR
AL
AR
+
5532
U1A
1
2
3
_
22K
47pF
6.8K
+
CD4052
U1
16
7
15
2
3
L IO
9
B
Vee
8
Vss
Vdd
L1 IO
R1 IO
6
inh
14
5
L2 IO
R2 IO
10
A
12
1
13
R IO
L3 IO
R3 IO
11
4
L4 IO
R4 IO
(-)5VDC
(+)5VDC
msb
lsb
+
5532
U1A
1
2
3
_
47pF
+
10uF
+
5532
U1A
1
2
3
_
47pF
+
10uF
+
5532
U1A
7
6
5
_
22K
47pF
6.8K
+
+
10uF
+
+
+
+
+
5532
U1A
1
2
3
_
47pF
+
10uF
+
+
5532
U1A
7
6
6
_
10pF
+
47uF
+
LM386
U1
6
4
5
2
3
_
+
1
8
+
+
47uF
+
330uF
+
LM386
U1
6
4
5
2
3
_
+
1
8
+
+
47uF
+
330uF
+
5532
U1A
7
6
5
_
22K
10pF
CD4053
U4B
3
5
4
9
X/Y
ctrl
X
Y
6
inh
+
10uF
CD4053
U4A
1
2
15
10
X/Y
ctrl
X
Y
6
inh
(-)5VDC
+
10uF
Cue
Speaker
L
R
Headphone
jack
CR Mute
Logic
Bus
Cue
Audio
Bus
Air Mon
Input
L
R
74AC08
U3A
14
7
3
1
+
2
74AHC74
U1B
14
+
8
9
12
D
13
RD
SD
Q
Q
11
CP
10
+
74AC08
U3B
14
7
6
4
+
5
74AHC74
U2A
6
5
2
D
1
RD
SD
Q
Q
3
CP
4
+
74AC08
U3D
14
7
11
12
+
13
74AHC74
U2B
14
+
7
8
9
12
D
13
RD
SD
Q
Q
11
CP
10
+
Ext
Pgm
Aud
+
Vee
Vss
74AC08
U3C
8
9
10
Unused
7
NA
16
7
8
10= air
01= pgm
00= aud
(0 = X, 1 = Y input)
CD4053
U9C
13
12
14
11
X/Y
ctrl
X
Y
6
inh
Vdd
5VDC
+
CD4053
U9B
3
5
4
9
X/Y
ctrl
X
Y
6
inh
+
(-)5VDC
Vee
16
7
Vss
8
(0 = X, 1 = Y input)
10K
10K
10K
10K
10K
10K
10uF
10uF
10uF
10K
10K
10K
10K
10uF
470
470
470
2.2K
32.4K
50K
50K
Av = (-)8dB to +10dB
(-2dBu)
(-12 to +6dBu)
(-2dBu)
(-2dBu)
(-2dBu)
(-14dBu)
10K
10K
10K
10K
100K
10K
(Av= +7dB)
10K
6.81K
10
.047uF
2 ohm
1/2W
2 ohm
1/2W
10
.047uF
+
LM386
U1
6
4
5
2
3
_
+
1
8
+
+
330uF
10
.047uF
2 ohm
1/2W
22.1k
2N3904
100 ohm
1/2W
(Av = 26dB)
(Av = 26dB)
(+5V PtoP = +7dBu)
4.7K
50K
+
5532
U1A
1
2
3
_
10pF
+
47uF
2.2K
32.4K
4.7K
50K
(0VU on meter = 2.9VPtoP = 2.6dBu)
(Av = 4.8dB)
(-2dBu = 1.7VPtoP)
(-10dBu = 0.7VPtoP)
200K
200K
100K
100K
100K
Mute = +12VDC
10K
10K
+
4.7K
10K
2.2K
10uF
2 ohm
+12VDC
DB15
Pin 14
+12VDC
DB15
Pin 1
CR Mute
Logic for
On Air
Light
DB15 Pin 10 Studio Monitor Left Audio output
DB15 Pin 11 Studio Monitor Right Audio output
from
Output
Section
DB15
Pin 2
Autocue
Logic In
DB15
Pin 15
Talkback
in to Cue
Autocue
bus
NOTE #1: The meter circuits on the 10 channel
PC board are used for the ARC-10 only. The
ARC-15 has VU meter driver boards located on
the VU Meters themselves in the VU housing.
VU
right
VU
left
1.28