Specifications And Service Data - Teac C-3RX Service Manual

G3RX
1 SPECIFICATIONS AND SERVICE DATA
NOTES:
1. Improvements may result in changes in specifications and service
data.
2. 0 dB is referenced to 0.775 V in this manual.
SPECIFICATIONS
Track System 4-track, 2-channel stereo
Heads 3: Erase, record and playback
Type of Tape Cassette tape, C-60 and C-90 (Philips type)
Tape Speed 4.75 cm/s (1-7/8 ips)
Input (level and impedance) :
MIC: Specified input level: —57 dB (1.09 mV)/10k ohms
Minimum input level: —67 dB (346 uV)
LINE IN: Specified input levei: —9 dB (275 mV)/50k ohms
Minimum input level: —19 dB (86.9 mV)
Output (level and impedance)
OUTPUT: Maximum output level: —2.5 dB (581 mV)/50k ohms
Specified output level: —5 dB (436 mV)
PHONES: Specified output level: —15.8 dB (126 mV)/8 ohms
Equalization
METAL: 3180 us+ 70 us
CO (Cr0,): 3180 us + 70 us
NORMAL: 3180 us + 120 us
Head Configuration
1/2-track, 1-channel erase head
1/4-track, 2-channel record head and playback head in a single
housing
Motors 1 FG servo capstan DC motor
1 DC reel motor
Bias Frequency 100 kHz +5 kHz
Operation Position Horizontal
Power Requirements
100/120/220/240 V AC, 50/60 Hz, 41 W (General export)
120 V AC, 60 Hz, 41 W (U.S.A./Canada)
220 V AC, 50 Hz, 41 W (EUR)
240 V AC, 50 Hz, 41 W (U.K./Australia)
Weight 9.5 kg (20-15/16 Ibs.) net
Dimensions See Fig. 3-2
* Dolby Noise Reduction System manufactured under Jicense
from Dolby Laboratories Licensing Corporation.
'Dolby' and the double-D symbol are trademarks of Dolby
Laboratories Licensing Corporation.
** dbx Noise Reduction System made under license from dbx,
Incorporated. The name dbx and the dbx symbol are trade-
marks of dbx, Incorporated.
SERVICE DATA
MECHANICAL
Tape Speed Deviation 3,000 Hz +45 Hz
Tape Speed Drift 30 Hz
Wow and Flutter
Playback: 0.08% (WRMS)
Record/playback: 0.25% (RMS)
Pinch Roller Pressure 390 g to 490 g (13.8 02 to 17.3 02.)
Reel Torque
Takep-up: 45 to 65 g-cm (0.62 to 0.90 oz-inch)
Supply: 3 to 8 g-cm (0.042 to 0.11 02-inch)
F.F.& REW: 90 to 160 g-cm (1.25 to 2.22 oz-inch)
Fast Winding Time
90 seconds for MTT-501 (C-60)
ELECTRICAL
Frequency Response
See Figs. 5-5, 5-7 and 5-8
Signal-to-noise Ratio
Playback: METAL, Co (CrO,): 52 dB min.
NORMAL: 48 dB min.
Overall: METAL, Co (CrO,): 48 dB min.
NORMAL: 45 dB min.
S/N is improved by 5 dB at 1 kHz and 10 dB above 5 kHz when
Dolby* NR is used.
Erase Efficiency 65 dB min. at 1 kHz (measured with input 10 dB
higher than the specified input level)
Channel Separation 35 dB min. (NR - QUT), 50 dB min. (NR - dbx**)
at 1 kHz.
Adjacent Track Crosstalk 40 dB min. at 125 Hz
Total Harmonic Distortion 2.0% or less (NR - OUT), 1.5% or less
(NR - dbx) with NORMAL, Co (Cr0.)
and METAL tapes
CAUTION
A 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.