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5.4.3
VISUAL TEST
Look at wiring
and connections.
Check to be sure that all
transistors
and IC's
are properly fitted into the sockets.
Check
for
resistors which may look burned, indicating trouble
in asso-
ciated circuitry.
TABLE
5-1
.
TROUBLESHOOTING
PROBLEM
POSSIBLE CAUSE
REMEDY
Signal does not pass
through
the
device.
1,
Power supply defective.
2.
Device
in full limiting.
Check supply voltages.
Remove
Q7
.
If
signal
passes, go
to
problem
of
"full limiting".
3.
Loose
or
broken wires
between PC board and
front panel controls.
Isolate
and resolder.
4.
Incorrect hookup.
See Section
II,
Installation.
5.
Bad
amplifier section.
Repair.
No limiting.
1.
Limiting switched
OFF.
Turn Attack control
CW.
2.
Input level
is
below
threshold.
Increase input signal
level
.
3.
"Q"
Bias misad justed.
Adjust
(11
5.3.2).
4.
GR amplifier defective.
Repair.
5.
Shorted GR bus.
Check wiring.
Always
in full
limiting
1.
"Q" Bias
misad justed.
Adjust
(11
5.3.2).
2.
Contaminated
PC board.
Clean
(11
5.5).
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Troubleshooting
