Teac A-3340 - PLAYBACK PERFORMANCE AND AZIMUTH ADJUSTMENT; PLAYBACK HEAD AZIMUTH ADJUSTMENT

62
FWD wt Rune 82 y
fe)
~
PLAYBACK HEAD AZIMUTH ADJUSTMENT
PLAYBACK PERFORMANCE
arf4e—w—[ >]
Q307/308
Qioi/i04 Quo306 yo
2iv
va
MONITOR
Q202/;
23V 7 Q201/204
Fig. 7-2 Simplified Diagram -Playback-
Coarse Adjustment
PWN E
Connect a level meter to either OUTPUT jack.
Thread a TEAC test tape YIT-1003 on the unit.
. Play the 15 kHz test tone in section 2 of the test tape.
Slowly rotate the azimuth screw until maximum indication is obtain
on the level meter.
NOTE
If during playback, a slight pressure on the heads results in
a vise of the reading of the level meter, head alignment ad-
justments should be accomplished.
Fine Adjustment
CAUTION
After coarse adjustment, do not make large corrections, turn
Azimuth screw 1/4 turn or less.
It is absolutely essential to accomplish the coarse adjustment
before using this method to avoid phase errors larger than 45°
Connect the test equipment as shown in Fig. 7-8.
Play a 10 kHz signal and adjust the azimuth screw until the oscil-
loscope shows that the signals are less than 45° in phase.
Secure the screw with a drop of LOCTITE.