Teac X-3 Service Manual

X-3
1 SPECIFICATIONS AND SERVICE DATA
SPECIFICATIONS
Track System 4-Track Two-Channel Stereo
Head System 3 heads: erase, record, playback
Reel Size 7” and 5”
Tape Speed 19 cm/s (7-1/2 ips) and 9.5 cm/s (4-3/4 ips)
Inputs (level and impedance)
MIC: Specified input level: -60 dB (0.775 mV)/10 kohms
Min. input level: —70 dB (245 nV)
LINE IN: Specified input level: —12 dB (195 mV)/100 kohms
Min. input level: —22 dB (61.5 mV)
Outputs (level and impedance)
OUTPUT: Specified output level: —5 dB (436 mV)/10 kohms
Max. OUTPUT level: +1 dB (0.869 V)
PHONES: Specified OUTPUT level: —24 dB (48.9 mV)/8 ohms
Playback Equalization
19 cm/s: 3,180 us + 50 us (NAB)
9.5 cm/s: 3,180 us + 90 us (NAB)
Motors
1 DC Servo Capstan Motor
2 induction Reel Motor
Bias Frequency 100 kHz
Operating Position Vertical, horizontal
Power Requirements
100/117/220/240 V AC, 50/60 Hz, 85 W
(General Export Model)
117 V AC, 60 Hz, 70 W (USA/Canada Model)
220 V AC, 50 Hz, 85 W (Europe Model)
240 V AC, 50 Hz, 85 W (UK/AUS Model)
Weight 14 kg (30-14/16 Ibs) net
9-1/8" (231mm)
14°(355 mm)
12-7/8" (326mm)
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16-1/8" (410mm)
Fig. 1-1 Dimensions
SERVICE DATA
MECHANICAL
Tape Speed Deviation
Tape Speed Drift
Wow and Flutter
3,000 Hz +30 Hz
20 Hz
Playback: 0.06% (WRMS), 0.12%(RMS) at 19 cm/s
0.10% (WRMS), 0.15% (RMS) at 9.5 cm/s
Record/Playback: 0.08% (WRMS) at 19 cm/s
0.15% (WRMS) at 9.5 cm/s
Pinch
Roller
Pressure
1.8
~
2.2
kg
(3.97
~
4,85
(Ibs)
Reel Torque (Play mode)
Take-up 330 ~ 470 g-cm (4.58 ~ 6.53 oz-inch)
Back tension 220 ~ 280 9-cm (3.06 ~ 3.89 02-inch)
Brake Torque
Forward direction: 1000 ~ 1300 g-cm (13.9 ~ 18.1 oz-inch)
Reverse direction: 500 ~ 700 9-cm (6.94 ~9.72 oz-inch)
Left/right deviation: 200 g-cm (2.78 oz-inch)
Fast Winding Time 140 seconds or less for 550 m (1800 feet)
ELECTRICAL
Frequency Response
Playback:
19 cm/s 40 Hz +3,-3dB 9.5cm/s 40 Hz +3,-3dB
400 Hz OdB (Ref.) 400 Hz OdB (Ref.’
20 kHz +3, —3 dB 14kHz +3,-3dB
Overall: (BIAS sw: 1, EQ sw: 1)
19cm/s 40 Hz +3,—3dB
400 Hz 0 dB (Ref.)
16 kHz +3, -3dB
20kHz +3,—4dB
Signal to Noise Ratio
Playback: 49 dB min. at 19 cm/s
47 dB min. at 9.5 cm/s
47 dB min. at 19 cm/s
45 dB min. at 9.5 cm/s
Erase efficiency 70 dB min. at 1 kHz (measured with input
10 dB higher than the specified input level)
Channel Separation 50 dB min. at 1 kHz
Adjacent Track Crosstalk 40 dB min. at 125 Hz
Total Harmonic Distortion 1.5% or less at 1 kHz
Overall:
NOTES:
e Improvements may result in SPECIFICATIONS AND SERVICE
DATA changes.
e Value of “dB” in the data refers to 0 dB (0.775 V), except where
specified.
CAUTION
Z\ Parts marked with this sign are safety critical components. They
must always be replaced with identical components — refer to the
TEAC parts list and ensure exact replacement.
9.5cm/s 40 Hz +3,—-3dB
400 Hz OdB (Ref.
10 kHz +3,—-3 dB
14 kHz +3,-4dB
7

Teac X-3 Specifications

General

Brand	Teac
Model	X-3
Category	Tape Deck
Language	English