Technics RS-TR474 Service Manual

Reverse function
The reverse function on this unit has three modes (<—* ,C™,
&xD). Read the descriptions below and select the mode as
desired.
Tape Wave
Only one side of the tape (either the forward side
or the reverse side) will be played, and operation
will automatically stop when playback has been
completed.
Both sides of the tape will be played repeatedly
eight times, and then operation will automatically
stop. '
(If playback is begun from the reverse side, the for-
ward side will be played seven times.)
When there is a tape in only one of the decks
Both sides of the tape wil! be played once, and
then operation will automaticaity stop.
(if playback is begun from the reverse side, the for-
ward side will not be played.)
When there is a tape In each of the decks
The forward and reverse sides of the tape in Deck
1 will be played, followed by the forward and
reverse sides of the tape in Deck 2, and after this
operation is repeated eight times, operation will
automatically stop.
(If playback is begun from Deck 2, the tape in
Deck 1 will be played seven times.)
To listen through headphones
Connect the headphones (not included) to the
headphones jack.
Plug type: 1/4 inch phone plug, stereo type.
Headphones
(not included)
Avoid listening for prolonged periods of time to prevent hearing
damage.
About the automatic-tape-select
function
This unit is equipped with the automatic-tape-select feature: it
automatically detects the type of tape being used, and then
makes the suitable adjustments of the bias and equalization ac-
cordingly.
| RS-TR4
About the remote control function
When connecting a Technics amplifier with the remote control
transmitter to this unit, you can operate this unit using a remote
control transmitter of the amplifier.
(See the operating instructions of the amplifier.)
During operation from the remote control, the “R.C." indicator
‘will light up.
Deck 1R.C." Deck 2 “R.C."
indication indication
About the Dolby noise-reduction
system
The Dolby noise-reduction system is designed to effectively redu-
ce the annoying high-frequency “hissing” noise typical of
cassette tapes. During recording, the system functions to in-
crease the high-frequency sound level, the sound, and then, dur-
ing playback, that same portion is weakened to bring it back to
the previous level. ,
This unit includes two types of Dolby noise-reduction systems,
the Dolby B NR-type and C NR-type.
Dolby B-type noise-reduction
Noise is reduced to about one-third.
Use this system when playing back tapes recorded by the Dolby-
B noise-reduction system, such as prerecorded music tapes, etc.
Dolby C-type noise-reduction
Noise is reduced to about one-tenth.
Use this system for the recording and playback of sound sources
that have a wide dynamic range and good tone quality, such as
FM broadcasts of live performances, etc., and for playing back
such tapes.
About the Dolby HX-Pro headroom
extension system
By functioning to improve the maximum output level of the tape’s
high-frequency range, this system permits recordings without a
reduction in the level of the sound source’s high-frequency
range. in addition, by using the system in parallel with this unit’s
noise-reduction system, recording and playback with a greatly ex-
tended dynamic range is possible.
Dolby noise reduction and HX Pro headroom extension
manufactured under license from Dolby Laboratories Licens-
ing Corporation. HX Pro originated by Bang & Olufsen.
“DOLBY”, the double-D symbol [1 and “HX PRO” are
trademarks of Dolby Laboratories Licensing Corporation.

Technics RS-TR474 Specifications

General

Track System	4-track, 2-channel stereo
Tape Speed	4.8 cm/s
Frequency Response	20Hz to 17kHz (Metal tape)
Type	Cassette Deck
Heads	1 x Record/Playback, 1 x Erase
Motor	DC motor
Output	400mV (Line)
Dimensions	430 x 125 x 290mm
Power Supply	220-240V AC, 50Hz