Teac V-8030S - Troubleshooting; Specifications

Maintenance (Fig. 6)
The heads and tape path should be cleaned
and demagnetized periodically.
Cleaning the Tape Path
Apply head cleaning fluid* to special
cotton swabs or a soft cloth, and lightly
rub the heads, capstans and all metal
parts in the tape path.
Also clean the pinch rollers using rubber
cleaning fluid*
* Both are available as TEAC HC-2 and RC-
2 in the U.S.A. or in the TEAC 12-261
Tape Recorder Cleaning Kit in other areas.
Demagnetizing Heads
Be sure that the power is off, then demagne-
tize the heads using a TEAC E-3 demagne-
tizer or equivalent. For details of its use,
read its instructions.
DOLBY S-TYPE RECORDING SYSTEM
The Dolby S-type System is a newly
developed recording system, and its features
include the following:
*Dolby S-type is based on the same
operating principles as Dolby SR, the
professional Spectrum Recording system,
and enhances the quality of audio
recordings.
* The system boosts low-level signals during
recording and cuts them during playback,
providing noise reduction of 10 dB at low
frequencies and a 24 dB at the higher
frequencies.
High Level Stage
Troubleshooting
Basic troubleshooting of a cassette tape
deck is similar to troubleshooting any other
electrical or electronic equipment. Always
check the most obvious possible causes
first. To give you a few ideas of what to
look for, check the following:
© No power: Is the power cord connected?
¢ Tape begins running when power is turned
on. Is the TIMER function switched on?
No audio output: Have all connections
been done correctly?
«Degraded sound quality: Are the heads
dirty or magnetized? Are you using good
quality tape? Is the NR selector in the
Correct position?
Unable to select the record mode: Are
the record protection tabs of the tape
in place?
*To prevent side effects such as noise
modulation, Dolby S-type operates with
what is called the principle of least
treatment and applies constant gain
wherever there are no high-level signals,
even if such signals exist somewhere else
inside the spectrum.
* A fixed band NR at low frequencies and a
combination of fixed and sliding band NR at
high frequencies operate to complement
each other in a technique known as action
substitution and gives less overall noise
modulation.
+ Antisaturation provides a wide headroom
both at low and high frequencies and less
distortion.
Low Level Stage
High Freq,
High Freq
>) Sliding
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Fixed
Bang
Low
|
|
Fixed >
Band
[Low Freq. | | {High Level
D—> ‘Spectral Anti- ->
Signal Skewing | | saturation
Input sour
68
Eine
tow Level
Anti-
1st Stage Adder
+ Sliding
Band
a se a s
—
igh Fra
Mca
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Band
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S-TYPE ENCODER BLOCK DIAGRAM
==
Specifications
ee
Track System: 4-track, 2-channel stereo
Heads: 3: 1 erase, 1 record and 1 playback
(combination)
Type of Tape: Cassette tape C-60 and C-90
(Philips type)
Tape Speed: 4.8 cm/sec. (1-7/8 ips)
Motors: 4
V-8030S
1 brushless quartz locked PLL servo
DC motor (for capstan drive)
1 DC motor (for reel drive)
1 DC motor (for mechanism drive)
1 DC motor (for power loading)
V-6030S
1 DC servo motor (for capstan drive)
1 DC motor (for reel drive)
1 DC motor (for mechanism drive)
1 DC motor (for power loading)
Wow and Flutter (WRMS):
0.022 %(V-8030S), 0.027 % (V-6030S)
Frequency Response (Overall): -20 dB
15 — 21,000 Hz +3 dB metal tape
15 — 20,000 Hz +3 dB CrO2 tape
15 — 18,000 Hz +3 dB normal tape
Signal-to-Noise Ratio (Overall):
60 dB (NR OFF, 3% THD level,
weighted)
70 dB (Dolby B in, over 5 kHz)
80 dB (Dolby C in, over 1 KHz)
84 dB (Dolby S in, over 1kHz)
Fast Winding Time: Approximately 85
seconds for C-60
Inputs: Line: 100 mV, 50k ohms
CD Direct: 180 mV, 50k ohms
Outputs: Line: 410 mV for load impedance
of 50k ohms or more
Headphones: 2 mW (max.) 8 ohms
Power Requirements: 120/230V
AC, 50-60 Hz (general export
models)
120 V AC, 60 Hz (U.S.A./Canada)
230 V AC, 50 Hz (Europe)
240 V AC, 50 Hz (U.K./Australia)
Power Consumption: 21 W (V-8030S),
20 W (V-6030S)
Dimensions (W x H x D):
442 x 149 x 352 mm
(17-3/8' x 5-7/8" x 13-7/8")
Weight: 9.5 kg (20-15/16 Ibs.) (V-8030S)
8.5 kg (18-12/16 Ibs.) (V-6030S)
Standard Accessories:
Wireless Remote Control Unit
(RC-557; for Gold-finish version
or RC-558; for Black-finish version)
x1, Battery (SUM-3, "AA", "R6"
type) x 2, RCA pin-plug cord x 2.
© Specifications were determined using metal
tape except where noted.
lmprovements may result in specifications
or features changing without notice.
Photos and illustrations may differ slightly
from production models.