Teac A-4300SX - Page 15

MONITOR PERFORMANCE
8-10 MONITOR LEVEL SETTING
OUTPUT SW SOURCE
1. Turn LINE controls fully clockwise.
2. Apply a 400 Hz —18 dB (97 mV) signal from AF oscil-
lator to LINE IN jacks.
3. Adjust VR-301/VR-304 for —8 dB (308 mV) at the
OUTPUT jacks.
OSCILLOSCOPE
DECK
under TEST
1-390-1
Fig, 8-7 Test Connections for Monitor Check
8-11 SPECIFIED LINE CONTROLS SETTING
4
. Apply a 400 Hz —8 dB (308 mV) signal from AF oscil-
lator to LINE IN jacks.
5. Adjust LINE controls for —8 dB (308 mV) at OUTPUT
jacks.
NOTE: At this point both the line controls and OUTPUT
controls are at the “Specified setting”. Do not
move these controls unless instructed in this proce-
dure to do so.
The accuracy of many of the following adjust-
ments and readings depends on these controls
being at the “Specified setting”’.
8-12 VU METER LEVEL SET
6
7
. Check VU Meters for 0 VU indication.
. Adjust VR-302/VR-305 for 0 VU, if necessary.
8
-13. MIC INPUT LEVEL CHECK
This is check only. No adjustment is to be made.
i,
2.
3.
7
Decrease
LINE
controls
to
minimum
position.
Set
MIC
controls
fully
clockwise.
Apply
a
400
Hz
signal
at
—70
dB
(0.244
mV)
to
the
MIC
input jacks.
. Check for —8 dB (308 mV) level at OUTPUT jacks.
. With —8 dB (308 mV) at OUTPUT jacks, MIC input
level should be —70 dB +2 dB (0.194 mV ~ 0.308 mV).
.
Return
MIC
controls
fully
counter
clockwise
to
prevent
noise insertion during following steps.
. Reset the LINE controls, to the “Specified setting”.