Limited Warranty And Repair Policy - MTI Matrix System Series Manual

Appendix
Troubleshooting Signal and Power Problems, Continued
PROBLEM
Missing front or rear channels
using high-level components
Missing front or rear channels
using low-level components
Hum
132
CAUSES
High-level wires making poor
contact at component or Switching
Module connection
Signal not bypassing Amplifier
Chain
Defective component
RCAs making poor contact at
component or Switching Module
connection
Signal not bypassing Passive EQ
Chain
Defective RCA
Defective component
Missing RCA ground
Defective RCA
RCA ground shorted to power
supply ground
Defective component
SOLUTIONS
Check all connections (include
interconnecting wires) or use test
Speaker to confirm that signal is
passing to & from each Switching
Module
Confirm connection at first (0)
Position of first (-1) Module of
Amplifier Chain; Check DIP Switch
setting – should be set to all on
Replace component
Check all connections (include
cables) or use test Speaker to
confirm that signal is passing to &
from each Switching Module
Confirm connection at first
Position of first Module of PEQ
Chain; check DIP Switch setting –
should be all on
Check continuity of RCA cables or
replace
Replace component
Check continuity of RCA cables at
component connection & at
Switching Module connections
Same as above
Same as above &/or use volt
meter to check voltage from RCA
to power supply ground
Replace component