Teac A-5500 - Tape Speed Adjustment

TAPE SPEED ADJUSTMENT
The tape speed should be measured using TEAC flutter free tape,
Model YIT-2003 (19 cm+7-1/2), 2002 (9.3.cm+3-3/4).
These tapes contain a highly accurate 3000 Hz tone. Connect
a digital frequency counter to either line OUTPUT jack.
The indicated frequency should be 3000 Hz (+30 Hz or less) for
both speeds. If necessary, adjust "adjustable resistors" on
the SERVO AMPL see Fig 9-8. .
SLOWER (ey FASTER
(ma
Adjustments
directton
Use
to
check
TEST
UNIT
Tape
Speed
FLUTTER FREE TAPE
Fig. 9-9 Test Equipment Set-up
for 9.5 cm/s
-for 19 em/s
Fig. 9-8 Adjustment Locations
FLUTTER
Flutter should be measured in Playback mode using a TEAC flutter
free tape YIT-2003 (7-1/2ips), 2002 (3-3/4ips) and Meguro model
MK665B flutter meter. Measurement of flutter should be made in
accordance with NAB standards. Values obtained with different
standards of equipment cannot be compared.
Flutter
should
not
exceed.
7-1/2
ips:
0.18%
(RMS)
0.08%
(W-RMS)
3-3/4
ips:
0.20%
(RMS)
0.10%
(W-RMS)
These figures apply to any tape position and direction (such as
full take-up reel, full supply reel or about mid-point).
If there is excessive wow and flutter, examine. the pinch roller,
belt, motors, capstan shaft, and reel rest for "grease", "oil",
"dirt'' and/or "wear". Also examine the tape counter assy for even-
ness of operation.