Teac A-6010GSL - Measurement and Adjustment - Mechanical-; Pinch Roller Pressure Measurement; Flutter & Tape Speed Measurement

1B
PINCH ROLLER PRESSURE MEASUREMENT
FLUTTER
6. MEASUREMENT AND ADJUSTMENT
-MECHANICAL-
NOTE: The TEAC GSL series tape deck uses a highly reliable three
motor drive solenoid operated system and should require a minimum
of mechanical maintenance or adjustment. These adjustments are
made at the factory, Readjustment should only be required after
many hours of operation or component replacement.
capstan
NOTE: Pinch roller pressure is supplied FINCHER,
by pinch roller pressure spring only and 4
it is therefore most important that the TOOT ME TOE SPRING SCALE
solenoid plunger has fully bottomed
before taking pressure measurement.
- Block the automatic shut-off arm in
the ON position.
- Attach a suitable spring scale to the
pinch roller shaft.
- Place the unit in the play mode ( pm )
and holding the scale as illustrated,
slowly draw it away from the pinch
roller stops rotating.
- The spring scale should indicate
- If adjustment is necessary, adjust the
double nuts on the capstan solenoid
plunger.
L_Fig. 6-2 Pressure Adjustment
& TAPE SPEED MEASUREMENT
Flutter and tape speed should be measured in playback mode using a TEAC
flutter free tape YIT-2003-2002. Connect test equipment to unit
as shown in the figure. Measurement of flutter should be made in
accordance with NAB standards. Values obtained with different standards
or equipment cannot be compared.
Flutter should not exceed.
7-1/2ips : 0.06%
3-3/4ips : 0.09%
The tape speed should be measured using TEAC
flutter free tape, model YTTI-2003:2002.
These tapes contain a highly accurate 3 kHz
tone. The indicated frequency should be 2985
3015 kHz for all speeds, both directions. a Or
These figures apply to any tape position and
direction (such as full take-up reel, full
supply reel or about mid point). Fig. 6-3 Equipment Set-up -—-