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CT-W103
PLAYBACK SECTION
1. Head Azimuth Adjustment
¢ Tum VR101, 102 (Deck Il) or VR103, 104 ee
|) to mechanical center positions.
[_Adlosment
ication
[Measuring lento
Play the 10 kHz/-20 dB
Head azimuth adjustment
PLAY
section of STD-331E test | screw.
LINE OUT
arora playback signal
(See Fig. 7-5)
ve
= | Sor
| STOP
Lock the screw with screw lock after completing adjustment.
2. Playback Level Adjustment
¢ This adjustment determines the DOLBY NR level, and must be performed with great care.
[No.| Mode | Inputsignal &testtape | Adjustment location | Measuring location | Adjustmentvalue | Remarks
RECORDING SECTION
VR 103 (Lch)
an
-10.7 dBV
1. Recording Bias Adjustment
VR 101 (Lch)
VR 102 (Rech)
ner] Wado [puna ot ae
ae STOP
| Set the TAPE SELECTOR switch to the NORM position.
2. Recording Level Adjustment
No.
Mode —
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Apply a 315 Hz signal to
the line input terminals,
Volume of the output fevel of
-11.2 dBV
load the STD-631 or
the oscillator
:
STD-632 test tape.
Record the above signal
Repeatedly record, playback
onto the STD-631 or
and adjust so that the
STD-632 test tape, and
playback signal level
playback.
becomes --11.2 dBV.
Play the 315 Hz/0 dB
section of the STD-331E
test tape.
FP. 1 (Lch)
TP. 2 (Reh)
Repeatedly record, playback
and adjust so that the
plyaback level of 6.3 ktiz
signal becomes +0.5 dB +
0.5 dB when compared with
the 315 Hz signal.
Load the STD-631 test tape.
Record the 315 Hz and
6.3 kHz signals at -20 dBV
input level and playback.
VR401 (Lch)
VR402 (Reh)
VR301 (Lch)
VR302 (Rech)
TP. 1 (Lch)
TP. 2 (Rich)
Record the above signal
onto the STD-621 test
tape, and playback.
-11.2 dBV + 1.5 dB
3. Level Meter Check
|No,] Mode |
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Check that the level meters
Volume of the output level of | TP. 1 (Lch)
"0 dB" light up within
the oscillator.
TP. 2 (Rech)
~11.2 dBV + 2 dB of the
signal output levei.
Apply a 315 Hz/-6 dBV
(0.5V) signal to the Line
Input terminals.
22
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