Teac A-2300SR - Tape Speed, Wow, Flutter, and Voltage Adjustments; Tape Speed Check Procedure; Wow and Flutter Check; Voltage and Frequency Conversion

7-5 TAPE SPEED CHECK
The tape speed should be measured using TEAC flutter free
tape, Model YTT-2003 (7-1/2 ips) and YTT-2002 (3-3/4
ips). These tapes contain a highly accurate 3,000 Hz tone.
Connect a digital frequency counter to either line OUTPUT
jack. See Fig. 7-5. The indicated frequency should be 3,000
Hz (+30 Hz) for all speeds during playback of the tape.
7-6 WOW AND FLUTTER CHECK
NOTE: Before performing this measurement, clean the
heads and Tape run guides, also check pinch roller
pressure, etc.
Use new Test Tape if possible for following checks.
Values obtained with different standards of equip-
ment cannot be compared.
PLAYBACK
1. Connect Test equipment to the deck as shown Fig. 7-5.
(Except oscillator).
2. Load TEAC YTT-2003 (for 7-1/2 ips) or YTT-2002 (for
3-3/4 ips) and playback tape.
3. Read the indication on the Wow and Flutter meter.
4. The Wow and Flutter should be:
0.18% (RMS) or less for 7-1/2 ips
0.20% (RMS) or less for 3-3/4 ips
OVERALL
1. Connect Test equipment to the deck as shown Fig. 7-5.
2. Load TEAC YTT-8013 (blank tape) Test Tape on the
deck and Record a 3,000 Hz input signal.
3. Rewind and playback the recorded signal.
4. The reading on the Meter should be
0.20% (RMS) or less for 7-1/2 ips
0.25% (RMS) or less for 3-3/4 ips
NOTE: These figures apply to any tape position (such as
full take-up reel, full supply reel or about mid-
point). Also examine the tape counter ass’y for
evenness of operation.
FREQUENCY COUNTER
OSCILLATOR
WOW & FLUTTER METER
DECK
under TEST
LINE IN
wm
Fig. 7-5 Test Connections for Wow/Flutter and Tape Speed Test
7-7 VOLTAGE AND FREQUENCY
CONVERSION (only General Export model)
This deck is adjusted to operate on an electric power source
of the voltage and frequency specified on the reel tag and
packing carton. If it is necessary to change the frequency or
voltage requirements of this deck to match your area, use
the following procedures.
Always disconnect Power Line Cord before making these
changes.
Frequency Conversion:
1. Remove the right side wood panel (4 screws), then the
rear/top metal panel (6 screws).
2. Set the power frequency selector slide switch (located
next to the capstan motor) to the 50 or 60 position to
match the power line frequency in your area.
3. Rotate the center (capstan) motor clockwise with your
hand and re-position the belt onto the correct pulley as
shown in the motor pulley illustration below.
The pulley can be seen by looking through the opening
in the side panel. Continue to rotate the motor by hand
approximately 10 revolutions to verify belt placement
before replacing ‘the side and rear covers.
Capstan
Flywheel
Pulley
Rotate motor clockwise ey
while changing belt 50_Hz 60
position.
Selector Slide Switch
Fig. 7-6 Frequency Conversion
Voltage Conversion:
The deck may be set for 100, 117, 220 or 240 volts. To
change the voltage unscrew the fuse in the center of the
voltage selector plug. Pull out the plug and reinsert it so the
desired voltage shows in the cutout. Reinstall the fuse speci-
fied on the label on the rear of the deck.
Fig. 7-7 Voltage Conversion