Service manual

ARC-10 Parts Layout
+12V
led
-12V
led
-5V
led
+5V
led
Mic 1 amp
(SSM2019)
Mic 2 amp
(SSM2019)
Mic 1
In
Mic 2
In
48V
phntm
power
CH 3
In
CH4
In
CH 5
In
CH 6
In
CH7
In
CH 8
In
USB
PGM
Out (L)
PGM
Out (R)
Phone
In
Phone
Out
Phone
Logic
PGM
Out
AUD
Out
Mono
Out
Mon
Out
Air
In
CH 9
In
Cue
In
DC
Power
Mute
FET Sw
(CD4053)
Monitor
Select
FET Sw
(CD4052)
Headphone
Autocue
FET Sw
(CD4053)
Phone
Talkback
FET Sw
(CD4053)
Meter
Housing
Cable
Conn
Volume
Control
Cable
Conn
Cue
Speaker
Amp
(LM386)
Headphone
Amp
Left
(LM386)
Headphone
Amp
Right
(LM386)
Summing amps
Pgm
Aud
Cue
Mic
Talkback
Remote Logic Cable
Mon Sel Lgc
Quad ‘AND’ gate
(74AC08)
Mon Sel Lgc
Dual ‘D’ flip flop
(74AC74)
AIR In amp &
trimpots
PGM
unbal
Out
AUD
unbal
Out
Mono
Mix
Out
Monitor
Out
VU
meter
drivers
RS232 Cable
RS232 Logic
Transistors
PGM
L out
PGM
R out
Phone
Out
Phone Logic
Reed relays
& Transistors
USB Codec
(PCM2900)
12MHz
Xstal
Codec
Record
Filter
Phone
In
Codec
Output
Filter
CH 3
In
CH 4
In
CH 5
In
CH 6
In
CH 7
In
CH 8
In
Channel Input Preamps
CH 1
fader
makeup
gain
amp
CH 2
fader
makeup
gain
amp
CH 3
fader
makeup
gain
amp
CH 4
fader
makeup
gain
amp
CH 5
fader
makeup
gain
amp
CH 6
fader
makeup
gain
amp
CH 7
fader
makeup
gain
amp
CH 8
fader
makeup
gain
amp
CH 9
fader
makeup
gain
amp
CH 10
fader
makeup
gain
amp
CH 1
On Lgc
(CD4049)
CH 2
On Lgc
(CD4049)
CH 3
On Lgc
(CD4049)
CH 4
On Lgc
(CD4049)
CH 5
On Lgc
(CD4049)
CH 6
On Lgc
(CD4049)
CH 7
On Lgc
(CD4049)
CH 8
On Lgc
(CD4049)
CH 9
On Lgc
(CD4049)
CH 10
On Lgc
(CD4049)
CH 1 FET Sw
P-A-Q
(CD4053)
CH 2 FET Sw
P-A-Q
(CD4053)
CH 3 FET Sw
P-A-Q
(CD4053)
CH 4 FET Sw
P-A-Q
(CD4053)
CH 5 FET Sw
P-A-Q
(CD4053)
CH 6 FET Sw
P-A-Q
(CD4053)
CH 7 FET Sw
P-A-Q
(CD4053)
CH 8 FET Sw
P-A-Q
(CD4053)
CH 9 FET Sw
P-A-Q
(CD4053)
CH 10 FET Sw
P-A-Q
(CD4053)
CH 1
P-A-Q Lgc
(CD4049)
CH 2
P-A-Q Lgc
(CD4049)
CH 3
P-A-Q Lgc
(CD4049)
CH 4
P-A-Q Lgc
(CD4049)
CH 5
P-A-Q Lgc
(CD4049)
CH 6
P-A-Q Lgc
(CD4049)
CH 7
P-A-Q Lgc
(CD4049)
CH 8
P-A-Q Lgc
(CD4049)
CH 9
P-A-Q Lgc
(CD4049)
CH 10
P-A-Q Lgc
(CD4049)
Monitor
SW amp
Phone
SW amp
PGM
mix
amp
AUD
mix
amp
Mix the Phone
channel
with the Main
Output buses
Talk
Air
Pgm
Aud
Note
All unmarked ICs
are NE5532 op amps
CH 3CH 4CH 5CH 6CH 7CH 8
Trimpots: ARC-10BP only
Mute
Ch 2 Ch 1
Ch 9 In
Unbal/USB
L L R R
USB
REC IN
A P A P
A
/
Q
P
A
/
Q
P
CN10
CN11
CN14
CN15
CN12
CN13
1.14