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3.
Phase check
By the means
of 6. Tape Path check on page 9
confirm that phase difference is proper.
4,
After the adjustment, lock the adjustment
screw
with locking compaund.
Adjustment
Location :
adjustment
screw
Tape Speed/WOW Check
Procedure:
test tape
WS-48S
frequency counter
{2 kHz, 0 dB)
& WOW meter
47 kQ
LINE
OUT
Lor R-CH
1. Measure the output frequency and the WOW value
while playing back the tape top of the test tape.
2.
Turn
over
the
test
tape, measure
the
output
frequency
and
the
WOW
value, and
check
the
difference from the values of the step 1.
Adjustment
Limits :
TAPE SPEED deviation:
within 2,990 to
3,010 Hz
within 2,990 to
3,010 Hz
0.04%
or less
TAPE SPEED fluctuating width:
WOW (WRMS):
| TC-K222ESG/K850ES
Playback Level Adjustment
Procedure:
Mode: playback
test tape
P-4-1300
(315 Hz, 0dB)
VTVM
jC
47 kK2
LINE
OUT
Adjust RV101
(L-CH) and RV201
(R-CH) to ob-
tain the specified LINE OUT level.
Adjustment
Limits :
LINE OUT level: 0.41 to 0.46 V
(—5.5 to —4.5 dB)
Level difference between channels:
less than 0.5 dB
Check that the LINE OUT level does not change in
playback
mode
while
changing
the mode
from
playback to stop several times.
PB DOLBY NR Check
Procedure:
1. Mode: playback
test tape
P-4-100
(10 kHz, ~10 dB)
47 kQ
—om
set
4
3
|
LINE
OUT
2. Make sure that the output levels are different in
DOLBY NR OFF, B, and C.
Adjustment
Limits :
OFF
>B
level difference
B
>C_
level difference
-1
to -3 dB
1 to 3 dB
Meter
Level Check
1.
Apply 315 Hz 0.245V (-10dB) signal to LINE IN
and adjust REC VOL
so that LINE OUT level is
0.4386V (-5dB), and then confirm
that 0 VU
segments
in level meter light or flicker. |
2.
Adjust REC VOL to obtain 2.19V (9dB) output at
LINE OUT and confirm that all segments in level
meter
light clearly.
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