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PLAYBACK SECTION
1.
Head Azimuth Adjustment
¢ Turn VR103, VR104 to mechanical center positions.
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Play the 10 kHz/— 20 dB
Head azimuth adjustment
LINE OUT
section of STD-331B test
screw.
tape.
{See Fig. 8-2)
Maximum
playback
signa! level.
Lock the screw with screw lock after completing adjustment.
2.
Playback Equalizer Adjustment
Input signal & test tape
Adjustment location
Measuring location
Play the 315 Hz and
VR101
(Lch)
LINE OUT
6.3 kHz/— 20 dB portion
VR102 (Reh)
of the STD-331B test
tape.
3.
Playback level Adjustment
* This adjustment determines the DOLBY NR level, and must be performed with great care.
[No | Mode |
Input signal & test tape
Adjustment location
Measuring location
Adjustment value
Remarks
Adjust the 10 kHz level
to 0.5 dB +0.5 dB in
respect to the 315 Hz
playback level.
Adjustment value
Remarks
1. | PLAY
Play the 315 Hz/O dB
VR103 (Leh)
TP. 3 (Leh)
section of the STD-331B
VR104 (Rech)
TP. 4 (Rch)
test tape.
— 15.2 dBv
a
VR604
VR605
>
TP11
V R601
(inex?
OO
VR602
Fig. 8-4. Adjustment locations
A137]
[Jpr28
pars
TP2
TPI
+s.
rey
REC.DOL.L—
z
REC.DOL.R
VR103_
-VR104
VR108
ie)
®
vnio7 (2)
(2)
TPB
R103
VR101
vR109@]
roa
(9
VR110
ied
VR102
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