Playback And Recording Section - Pioneer XV-EV9 Service Manual

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6.1.2 PLAYBACK and RECORDING SECTION

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Playback Section
A
(1) Tape Speed Confirmation
No. Mode Input Signal/Test Tape
NCT-111 (3kHz)
1 PLAY
STD-301 (3kHz)
(2) Head Azimuth Adjustment
¶ Do not switch between forward and reverse operation with the screwdriver inserted.
No. Mode Input Signal/Test Tape
B
NCT-112 or STD-331E
1 PLAY
(Playback: 10 kHz, –20 dB)
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Recording Section
(1) Recording Bias Adjustment
¶ After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
C
No. Mode Input Signal/Test Tape
REC/ Input a 315Hz signal to the LINE -
1
PAUSE IN terminal.
TE
L 13942296513
Load the STD–630 or 631 test tape
REC =
and record / playback the 315Hz
2
and 10KHz signals.
PLAY
(see the Note below)
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
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E
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Adjustment Points
ADJ. VR on
or CASSETTE MECHA
(Refer to Fig. 6-2)
Adjustment Points
Head azimuth
adjustment Screw
(Refer to Fig. 6-2)
Adjustment Points
∗ Input signal level
L ch
R ch
x ao
y
. i
2
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8
Measurement Points Adjustment Value
LINE OUT R (W420)
(MAIN ASSY)
Measurement
Points
LINE OUT L (W422)
Max. Playback
LINE OUT R (W420)
(MAIN ASSY)
Measurement
Points
LINE OUT L (W422)
Q Q
3 6 7 1 3
LINE OUT R (W420)
VR2801
(MAIN ASSY)
VR2802
u163
.
XV-EV9
3
4
2 9 9 4 2 8
Remarks
FWD adjustment
+10
3000 Hz Hz
–10 REV Confirmation
( 3000 Hz
Adjustment
Remarks
Value
After adjustment, apply silicon
bond to the head azimuth
signal level
adjustment screw.
Adjustment
Remarks
Value
–23.7 dBV
1 5 0 5 8 2 9 9 4
Repeat adjustment until playback level of
the 10kHz signal is within 0dBV ±0.5dB
from that of the 315Hz signal.
m
co
4
9 9
+40
Hz)
–40
2 8 9 9