Atc Function; To Cancel The Atc Settings After They Have Been Made; To Cancel The Atc Function While The Settings Are In Progress - Technics RS-TR979 Service Manual

- RS.TR979
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.ABOUT THE ATC FUNCTION
ATC(auto tape calibration) is the function which identifies the quali-
ty of the tape (concerning bias, level, equalizer) automatically and
sets the most desirable recording condition. It takes about 1
minute to complete the setting.
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ATC will begin when the ATC button on the deck
in which the cassette for recording is inserted is
pressed.
Perform ATC while the other deck is in the stop (or rewind/fast-for-
ward) mode.
Because the ATC function records a test signal onto the tape, any
previously recorded material will be erased, so be careful not to ac-
cidently erase material which you wish to save.
Although ATC can also be performed for a tape which is partly
wound, it is not possible at the end of the tape. Although the tape
will be wound back to its original position after ATC has been com-
pleted, the position may be slightly different from the exact original
position. Therefore, perform ATC 2 seconds or more after the end
of the previous track.
Be sure to set the bias adjustment control to O.
The display changes as follows while the ATC setting is taking
place.
Example: Performing ATC on tape deck 2.
CD Press theATC button.
,-,,-,,-,,-,
U U.U U
I' -30-2& "20-"-U-" -, -, -, -".O" .. .. ..
t>
R
""""""""""""""""""""""""""""........
@ Bias setting in progress.
,-, ,-, ,-,,-,
- -.- -
II II II II
t>
1'"ill,ill"II"l1"II"II"-,'""'",-,',,,,WIo1" ..
.~.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'
ATC
ATC
L[Q
DECK'
1-1-1>1l!f"
Bias adjustment control
"~" indicator
flashes.
,-,,-,,-,,-,
E-::=:;:::;:=:~ .',
j
E-. . .,." .""-,~ u u .U u
t>
=:::
B I 1'-' C
f --,--~- ' --'--:' J '"
1'-' _I
E-.\..'.,i.\,,'.-Ju
",
"AY~
=:::
Equalizer setting in progress.
CID
,-,,-,,-,,-,
U U.U
t>
@ Level setting in progress.
,-, ,-, ,-,,-,
UU.UU
t>
Q]
ATC completed.
CID
,-,,-,,-,,-,
U U.U
t>'
If the leader tape (attached to each end of recording tape) is reach-
ed during the above setting operations, the "
rapidly flash on and off to indicate that ATC is not possible. Wind
the tape to a position from which ATC can be performed and press
the ATC button once again.
To cancel the ATC function while the settings are
in progress:
Press the stop button.
To cancel the ATC settings after they have been
made:
Press the ATC button. (The settings cannot be cancelled during
recording.)
Notes:
ATC may not be possible on an old tape or on some special types of
tapes.
The settings will be cancelled if the open/close button is pressed,
so do not remove the tape cassette until recording has been com-
pleted.
Unless the ATC settings are cancelled, they will be stored in
memory even after the power has been switched to the standby
condition (or the AC power supply cord has been disconnected
from the AC outlet).
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1'",II,ill"II"II,ill"II",'""'""',,,,W'o,I" .. .. " "AY~
.~.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'.'
E- --;-~---;--;--;- -J'" I ,- II 1- I
E.,...".",.JuLCVCL ".
1'"iII,ill"fl,ill,iH"II",'""'""',,,,W1o1" .. .. .. "AY~
R"""""""""""""""""""""'"
................................................................
,-,,-,,-,,-,
~-:-:::-.~:-.-:::-:-j m u U.U U
U
.. -30 -2& -20 -" -u -" -, -, -, -".~.. .. .. ..
.. .~ ,................
"~" indicator illuminates.
C'-'
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=:::
t>
=:::
~
" indicator will