Pioneer CT-W208R - Dual Cassette Deck Manual de serviço - Página 29
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(2) Recording Bias Adjustment
• After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
No.
Mode
Input Signal/Test Tape
REC/
Input a 315Hz (–26 dBV) signal to
1
PAUSE
the LINE INPUT.
Load the STD–632 test tape and
REC =
2
record/playback the 315Hz and
PLAY
10kHz signals. (see the Note below)
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
(3) Recording Level Adjustment
No.
Mode
Input Signal/Test Tape
REC/
Input a 315Hz signal to the LINE
1
PAUSE
INPUT.
• STD–632 test tape and record/
REC =
2
playback the 315Hz signal.
PLAY
• DOLBY NR : OFF
(4) Recording Frequency Characteristics Confirmation
No.
Mode
Input Signal/Test Tape
• STD–632, STD-622 test tape
REC =
• Record with –26.0 dBV
1
PLAY
• DOLBY NR : ON/OFF
Adjustment Points
VR401
L ch
VR402
R ch
Adjustment Points
Input signal level
VR301
L ch
VR302
R ch
Measurement
Adjustment Points
Points
LINE OUT
(L, R ch)
Measurement
Adjustment
Points
Value
–26 dBV
LINE OUT
(L, R ch)
Repeat adjustment until playback level of
the 10kHz signal is within 0dB ± 0.5dB
from that of the 315Hz signal.
Measurement
Adjustment
Points
Value
–11.2 dBV
TP 1 (L ch)
TP 2 (R ch)
Repeat recording, playback and
(MAIN UNIT)
adjustment until playback level of the
315Hz signal becomes –10dBV ± 0.5dB.
Adjustment
Value
Check that the frequency
characteristic is within the
range of Fig. 6-4.
CT-W208R
Remarks
Remarks
Remarks
29