S E R V I C E & M A I N T E N A N C E
Mic Module
6.6
‘A’ input
mic preamp
SSM2019
‘B’ input
mic preamp
SSM2019
Start Relay
Stop Relay
2N3904
relay drivers
A/B Logic
CD4049
Pgm/Aud Logic
CD4049
Utl/CueLogic
CD4049
A/B analog
switch
CD4052
A/B sum amp
NE5532
Fader amp
NE5532
Channel
On-off
Logic
CD4049
Cue bus
assign switch
CD4053
Pgm/Aud/Utl bus
assign switch
CD4053
Pgm/Aud/Utl bus
assign switch
CD4053
On-Off Tally Logic
2N3904
The MARC-15 console is designed for modular replace-
ment rather than component level field repair. The con-
sole is modular and modules can be replaced for imme-
diate repair. The power supply is external and plug in.
ICs are plug in. The rotary faders are plug in.
For board level part replacement, this page displays a
physical board layout with descriptions of the functions
of each IC. For repair, simply replace the ICs associated
with the function that has failed on the module.