Teac A-5500 - Page 37

a
A-5300
ADJUSTMENT SEQUENCE
PLAYBACK HEAD |_, |SPECIFIED OUTPUT VU METER FREQUENCY PHONES
—_ —_ —e
AZIMUTH ADJ LEVEL SETTING LEVEL SET RESPONSE OUTPUT
RECORD HEAD] __| BIAS BIAS TRAP] ___|SPECIFIED INPUT MINIMUM INPUT
AZIMUTH ADJ ADJ ADJ LEVEL SET LEVEL SETTING
RECORD LEVEL|_. {OVERALL MONOPHONIC ERASE _,| SIGNAL-TO-
SET FREQ. RESPONSE RECORDING EFF ICENCY NOISE RATIO
PLAYBACK HEAD AZIMUTH ADJUSTMENT
NOTE: After head replacement or if, during playback,
a slight pressure on the heads results in a rise of
the reading of the Test-Set (M-826A), head azimuth
should be readjusted.
Coarse Adjustment:
1. Connect a Test-Set to either OUTPUT jack.
Remove the Head Housing.
2. Thread a TEAC Test Tape YTT-1003 on the unit.
3. Play the 15 kHz Test Tone in Section 2 of the Test Tape.
4. Slowly rotate the azimuth screw until maximum indication
is obtained on the Test-Set.
Fine Adjustment:
NOTE: It is absolutely essential to accomplish the coarse
adjustment before performing the fine adjustment to avoid
phase errors larger than 45°. After coarse adjustment,
do not make large corrections, turn azimuth screw within
1/4 turn or less.
Connect the Test equipment.
Play a 50 Hz 10 kHz signal and adjust the azimuth screw
until the oscilloscope shows that the signals are less
than 45° out of phase.
7. Secure the screw with insulating lock paint.
nw