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ADJUSTMENTS
GENERAL REMARKS
®
Before adjustment, wipe the tape contacting surfaces clean
as well as the contacting surfaces of the driving parts with a
soft cloth soaked in alcohol.
|
Trouble may occur because of oil and grease stains.
®
Carefully handle the belt because grease easily attaches to
it. Then, check the used rubber parts. lf the rubber has
deteriorated or is scratched, replace the parts with new ones.
EQUIPMENT REQUIRED
e
VTVM
e
Frequency Counter
@
Dummy Load (82)
e
Test Tapes
* 3kHz Test Tape (Example: TEAC MTT-111) for Tape
Speed Adjustment
* 8kHz Test Tape (Example: TEAC MTT-113C) for Head
Azimuth Adjustment
e
DC Constant-voltage Regulator
e
Alignment Tool
NOTE:
Supply
6V
DC
to
the
Ext.
Power
Jack
from
the
constant-voltage regulator at the adjustment.
TAPE SPEED ADJUSTMENT
1.
Remove
the
battery
compartment
lid and
connect
a
frequency counter to the earphone jack as illustrated.
Then, insert a 3kHz test tape (Example: TEAC MTT-111) into
the cassette compartment.
Frequency Counter
3KHz
ea 3%]
Potentiometer (P101)
for Tape Speed Adjustment
2. While playing back the test tape, adjust the tape speed by
turning the potentiometer (P101) on the P.C.Board until the
frequency counter reads 3kHz (+3%).
HEAD AZIMUTH ADJUSTMENT
1.
Connect a VTVM
to the earphone jack as illustrated and
insert a 8kHz test tape (Example: TEAC MTT-113C) into the
cassette compartment.
VTVM (Max.)
Dummy Load 80,
Adjustment
R/P Head
Adjusting Screw
2. While playing back the test tape, slowly turn the azimuth
adjusting screw until the VT VM reads the maximum.
3.
After the adjustment, secure the adjusting screw with paint
or glue.
sc ae
Se
ested
ac
ten
arnt
le
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