Creative Engineering ROCK-A-FIRE EXPLOSION - Page 227

***************** A. Audio Problems **********************
Symptom: No Sound
Procedure Results
1. Check to be sure power
is on to all equipment in
Audio Rack, see drawing
on page 5-016.
2. Start Tape Deck at
controller buttons.
Check channels 1 & 2 VU
meters for movement.
3. Check meters on amps.
4. Check fuses on speaker
panel.
5. Check impedance on speakers.
6. Pull out cables from
channels 1 & 2 of the
DBX box output and plug
them into channels 1 & 2
of the Tape Deck output.
7. Check gain on equal-
izer.
8. Take a reading on the
output of the equalizer
from channels 1 & 2,
with your O'scope.
9. Check fuses on rear of
amplifier.
10. Check cable connections
and wiring.
Symptom: One channel out
See power up procedures
in Mech. Part I, page 1-003
and pages 5-002 and 5-003 in
Electronics.
If meters do not move, Deck
or Tape may be at fault, see
Tape Deck Manual, or replace
tape.
If no movement - go to step 7.
If fuses are blown - replace.
See pages 5-003 and 5-015.
Replace speakers if necessary
If sound comes out - DBX is
bad - replace it or see
sections on DBX - pages 5-003
and 5-024.
See pages 5-002 and 5-016.
If no output is seen on the
O'scope - equalizer is bad
replace it, see pages 5-002
and 5-017 or 5-018.
Replace any blown fuses and if
there is still no output,
replace amplifier.
See pages 5-002 and 5-015.
Procedure Result
1. With the tape running,
look at the meters on
the front of the Deck,
for channels 1 & 2.
4-003
If meters in question do not
move, see Manual on Tape Deck.