JVC TD-W717TN - Compu-Calibration Procedure; F.CAL Mode Setup; Calibration Adjustment Items

TD
-
W
717
TNC
/
J
TD
-
W
718
BKA
/
B
/
E
/
EN
/
G
/
U
/
UT
Compu
-
Calibration
for
F
.
CAL
mode
(
automatically adjustment
)
F
.
CAL
mode
setting
procedure
1
.
Short
the
F
.
TUNING
TP
and
GND
on
mecha
control board
ass
’
y
.
2
.
Before
set
the
F
.
CAL
mode
,
press
the
Counter
Reset
key
while
pressing
the
STOP
key
of
deck
B
by
reason
of
cancellation
the
factory
setting
level
.
3
.
Press
the
POWER
key
while
pressing
the
FF
[
]
key
of
deck
A
under the
power
standby
mode
.
At
the
same
time
,
[
F
.
CAL
]
mode is
displayed
on
the deck
B
counter
of
FL
indicator
.
NOTE
:
When
Compu
-
Calibration
is
finished
normally
,
[
COMPU
-
CAL
]
LED
light
up
and result number
of
calibration is dis
-
played
on
the
counter
of
FL
indicator
.
If
Compu
-
Calibration
is
finished
abnormally
,
[
COMPU
-
CAL
]
LED
blinks and
error
number
of
calibration is
displayed
on
the
counter
of
FL
indicator
.
Then
correct
the
error
message
and
readjust
the
Compu
-
Calibration
.
Item
Condition
Adjustment
Level
meter
sensitivity
adjustment
Mode
:
R
EC / PAUSE
at
deck
B
Test
siganl
level
:
400
Hz
or
1
kHz
,
-
4
dBs
lnput
:
LINE
IN
(
L
and
R
)
1
.
Supply
a
400
Hz
or
1
kHz
signal
to
both
L
and
R
of
LINE IN
terminals
at
-
4
dBs
.
2
.
Press the
[
COMPU
-
CAL
]
key
of
deck
B
,
adjust
the level
meter
sensitivity
automatically
.
3
.
Confirm
that
difference
level between
left
and
righkt
within
0.3
dB
.
Playback
level
adjustment
at
decks
A
and
B
Direction
:
FWD
(
decks
A
and
B
)
NR
:
OFF
Test
tape
:
VTT
-
727
1
.
Load
the
VTT
-
727
test
tapes
to
both decks
A
and
B
.
2
.
Press the
[
PLAY
]
key
of
deck
A
and
playing
back the
tape
.
3
.
Press the
[
COMPU
-
CAL
]
key
of
deck
A
and
adjust
the
playback
levels
of
both decks
A
and
B
automatically
.
Recording
charactor
adjustment
(
Bias and
REC /
PB
sensitivity
)
at
decks
A
and
B
Direction
:
FWD
(
decks
A
and
B
)
Recrding
tape
:
AC
-
224
(
normal
)
AC
-
513
(
Cr
02
)
AC
-
712
(
metal
)
NR
:
OFF
1
.
Load the
AC
-
224
tapes
to
both decks
A
and
B
.
2
.
Press the
[
COMPU
-
CAL
]
key
of
deck
A
,
start
the
recording
charactor
adjustment
of
deck
A
and then deck
B
automatically
.
After
while
about
50
seconds
,
adjustment
is
completed
automatically
.
While
adjusting
,
confirm
that all
segment
is
displayed
on
FL
indicator
.
3
.
Load the
AC
-
513
tapes
to
both decks
A
and
B
and
adjusting
as
the
same manner
above
step
2
.
Afer
while about
40
seconds
,
adjustment
is
completed
automatically
.
4
.
Load the
AC
-
712
tapes
to
both decks
A
and
B
and
adjusting
as
the
same manner
above
step
2
.
After
while about
40
seconds
,
adjusting
is
completed
automatically
.
NOTE
;
When
recording
the
each
tapes
,
do
not
use
while about
3
minutes
range
of
tape
start
and
end
winding
positions
.
(
No
.
4358
)
18
-
1