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A-SSORX
5-3
PLAYBACK PERFORMANCE
|
Deck settings:
EQ sw. — METAL
NR SYSTEM sw. — OUT
TEAC test tapes:
MTT-150:
MTT-316:
MTT-216:
For Dolby level calibration
For playback frequency
response check for METAL, Co (CrO2).
For playback frequency
response check for NORMAL
DECK
under TEST
Fig. 5-3
Azimuth
MODE/
SIGNAL
ADJUST
CEM
CONNECTION
INSTRUCTION
SOURCE
(or CHECK)
ReTEnT.
BENAGES
OUTPUT cont. — conve-
Phase: within 45°
1.
REC/PLAY
Fig. 5-3
nient level position
MTT-150
Check
on'scope(Fig.5—5)
:
P A V
[Lucene eceeeeteses [io strre cliente
eg aes Tok slink AN
eh
IR
en ae EIN
ee
Soe eee
Rt
eer nE [th hg 8 Ate
a
head azirauth
MTT-316(12.5)
Azimuth adj. nut
| Max. output on
"
"
kHz/—20dB)
of head (Fig. 5-4) | VTVM
VTVM
between
TP1/TP2 (on R/P
AMPL.
PCB) and
NR SYSTEM
—
OO
MTT-150
R12/R22
580 mV
(—2.5dB)
GND
VTVM between
TPIL/TPIR {on
DBX PCB) and
NR SYSTEM — OUT
'
VR101/VR201
;
GND
fe et
eet Arse
eres ae ts et NE ia an rahe Ea do
Ne 2
een rental a ee
at ase
nie
es PI
ae
hee
i
—2.5 dB t2 dB (461
Max. output
Fig, 5-2
OUTPUT
cont. — Max.
Check
mV
~ 731 mV)
level
2:
<Outputleval'
[fe
ee
ee
et
Ee
a
eS
@ Spec. output
level
@ Set OUTPUT cont. for
© seen Pe con:
°
—5dB output of ch.
"
OUTPUT cont.
—5 dB (436 mV)
IMPORTANT:
with lower reading
After finishing,
do not move
OUTPUT cont.
during any later
PR SS SRS
or
re RS ee Se SS Sere Sees ee
nn
pen
een
nn ee
nnn men en ee nan ------4
process.
'
@ Adjust for ch. with
oe
i
higher reading
R13 or R23
3. Peak level
.
'
ion
Fig. 5-2
Spec. PB cond.
MTT3150
R15/R25
Ce ee
—-—+-
——__-—
st
EQ-METAL
@ Adjust for
'
i 40Hz
~ 6.3kHz +2 dB
'
Fig. 5-2
ADEE tO.
RE T-GI6
R11/R21
10kHz +2, —3 aB| Reference:
Spec
be the same
|
14kHz +2, —4 dB
315 Hz
4.
Frequency
PB
tevel as ref.
:
response
cond.
signal
EQ
"
10 kHz output should
"
NORMAL
(10 kH2/
Check
| raise about 5 dB than
—20 dB)
above actual one
Spec. PB cond.
Ratio of spec.
Bs: Stanal te:
Fig. 5-2
Ee NOR Or
MTT-501
Check
48 dB min. ratio
output —5 dB
noise ratio
@ Use fully erased tape
t6-noisé
(Use bulk tape eraser)
i
@ At phone
6. Headphone
:
2
—15 dB +2 dB (109
tack
output level
Rig: 8-6
Spree Fe cond:
eee
ens
mV
~ 173 mV)
e 80 load
REC/PLAY
HEAD
OSCILLOSCOPE
Fixed
adjusting nut
Fig. 5-4
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