XV-EV51
73
5
6
7
8
5
6
7
8
C
D
F
A
B
E
6.1.2 Playback and Recording section
NCT-111 (3 kHz)
VR2701 (DECK ASSY)
(Refer to Fig. 6-3)
No.
Mode
Input Signal/Test Tape
Adjustment Points
Measurement Points
Adjustment Value
Remarks
PLAY
1
P1 R (CN2507)
(DECK ASSY)
3000 Hz Hz
(1) Tape Speed Confirmation
(1) Recording Bias Adjustment
¶
After the adjustment, caution should be exercised so as not to become under bias by checking the distortion rate.
NCT-110 test
tape
(Playback: 10 kHz, –20 dB)
Head azimuth
adjustment Screw
(Refer to Fig. 6-3)
Remarks
PLAY
1
P3 L (CN2507)
P1 R (CN2507)
(DECK ASSY)
Max. Playback
signal level
(2) Head Azimuth Adjustment
¶
This unit is equipped with auto tape selector.
¶
Do not switch between forward and reverse operation with the screwdriver inserted.
+10
–10
Playback Section
After adjustment, apply silicon
bond to the head azimuth
adjustment screw.
VR2301
PLAY
1
(3) Playback Level Adjustment
¶
Since this adjustment determines playback DolbyNR level, Perform it carefully.
L ch
R ch
VR2302
P3 L (CN2507)
P1 R (CN2507)
(DECK ASSY)
Recording Section
VR2801
REC/
PAUSE
1
Input a 315Hz signal to the LINE -
IN terminal.
∗
L ch
R ch
VR2802
P3 L (CN2507)
P1 R (CN2507)
(DECK ASSY)
–3.7 dBV
Input signal level
–23.7 dBV
REC
=
PLAY
2
Load the STD–633 test tape and
record/playback the 315Hz and
10kHz signals. (see the Note below)
Repeat adjustment until playback level of
the 10kHz signal is within 0dBV
±
0.5dB
from that of the 315Hz signal.
(2) Recording Level Adjustment
VR2401
REC/
PAUSE
1
L ch
R ch
VR2402
P3 L (CN2507)
P1 R (CN2507)
(DECK ASSY)
Input signal level
–7.7 dBV
REC
=
PLAY
2
STD–633 test tape and record/
playback the 315Hz signal.
Repeat recording, playback and
adjustment until playback level of the
315Hz signal becomes –7.7dBV
±
0.5dB.
Note: Set the 10kHz input signal level to the same value as the 315Hz input signal level of step 1.
Input a 315Hz signal to the LINE-
IN terminal.
∗
No.
Mode
Input Signal/Test Tape
Adjustment Points
Measurement
Points
Adjustment
Value
Remarks
No.
Mode
Input Signal/Test Tape
Adjustment Points
Measurement
Points
Adjustment
Value
NCT-112 test
tape
(Playback: 315 Hz, 4 dB)
Remarks
No.
Mode
Input Signal/Test Tape
Adjustment Points
Measurement
Points
Adjustment
Value
Remarks
No.
Mode
Input Signal/Test Tape
Adjustment Points
Measurement
Points
Adjustment
Value
FWD adjustment
REV Confirmation
( 3000 Hz Hz )
+40
–40
7
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